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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1673649 | .vimrc action onclose | 11 | 2009-11-04 13:08:07 | <p>is it possible to use something like an "vim-close/exit"-Event to execute some last commands before vim quits?</p>
<p>I use this lines in my config, to let vim set my screen-title:</p>
<blockquote>
<p>if $TERM=='xterm-color'</p>
<pre><code> exe "set title titlestring=vim:%t"
exe "set title t_ts=\<ESC>k t... | 2,607 | 62,824 | 2014-05-15 03:16:31 | 1,673,687 | 12 | 2009-11-04 13:18:39 | 128,661 | 2009-11-04 13:28:48 | https://stackoverflow.com/q/1673649 | https://stackoverflow.com/a/1673687 | <p>Yes, there is a "close-event" -- actually two of them.<br>
To quote vim's <strong>:help {event}</strong>: </p>
<pre><code> Startup and exit
|VimEnter| after doing all the startup stuff
|GUIEnter| after starting the GUI successfully
|TermResponse| after the terminal response ... | <p>Yes, there is a "close-event" -- actually two of them.<br> To quote vim's <strong>:help {event}</strong>: </p> <pre><code> Startup and exit |VimEnter| after doing all the startup stuff |GUIEnter| after starting the GUI successfully |TermResponse| after the terminal response ... | 370, 387 | bash, vim | <h1>.vimrc action onclose</h1>
<p>is it possible to use something like an "vim-close/exit"-Event to execute some last commands before vim quits?</p>
<p>I use this lines in my config, to let vim set my screen-title:</p>
<blockquote>
<p>if $TERM=='xterm-color'</p>
<pre><code> exe "set title titlestring=vim:%t"
exe ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,772 | bash | # .vimrc action onclose
is it possible to use something like an "vim-close/exit"-Event to execute some last commands before vim quits?
I use this lines in my config, to let vim set my screen-title:
> if $TERM=='xterm-color'
>
> ```
> exe "set title titlestring=vim:%t"
> exe "set title t_ts=\<ESC>k t_fs=\<ESC>\\"
>... | Yes, there is a "close-event" -- actually two of them.
To quote vim's **:help {event}**:
```
Startup and exit
|VimEnter| after doing all the startup stuff
|GUIEnter| after starting the GUI successfully
|TermResponse| after the terminal response to |t_RV| is received
|VimLeav... |
65126606 | How to remove all pipenv virtualenvs when the directory was deleted? | 10 | 2020-12-03 13:08:14 | <p>I have a directory <code>A/</code> containing a Pipfile and a Pipfile.lock obtained by running <code>pipenv install</code>. So this directory has a corresponding virtualenv at <code>/home/username/.local/share/virtualenvs/A-...</code>.</p>
<p>Then I delete this <code>A/</code> directory. <strong>Is there a way to ch... | 6,111 | 9,962,824 | 2022-04-02 18:41:27 | 67,209,898 | 12 | 2021-04-22 08:50:40 | 2,455,457 | 2022-04-02 18:41:27 | https://stackoverflow.com/q/65126606 | https://stackoverflow.com/a/67209898 | <p><code>pipenv</code> has no special option for it. But you can use these bash scripts (I made them using the venvs directory <code>~/.local/share/virtualenvs/</code> so you should change it if your venvs folder is different)</p>
<h1>PRINT useless venvs:</h1>
<pre><code>for f in $(find ~/.local/share/virtualenvs/*/.pr... | <p><code>pipenv</code> has no special option for it. But you can use these bash scripts (I made them using the venvs directory <code>~/.local/share/virtualenvs/</code> so you should change it if your venvs folder is different)</p> <h1>PRINT useless venvs:</h1> <pre><code>for f in $(find ~/.local/share/virtualenvs/*/.pr... | 387, 14529, 128625 | bash, pipenv, virtualenv | <h1>How to remove all pipenv virtualenvs when the directory was deleted?</h1>
<p>I have a directory <code>A/</code> containing a Pipfile and a Pipfile.lock obtained by running <code>pipenv install</code>. So this directory has a corresponding virtualenv at <code>/home/username/.local/share/virtualenvs/A-...</code>.</p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,773 | bash | # How to remove all pipenv virtualenvs when the directory was deleted?
I have a directory `A/` containing a Pipfile and a Pipfile.lock obtained by running `pipenv install`. So this directory has a corresponding virtualenv at `/home/username/.local/share/virtualenvs/A-...`.
Then I delete this `A/` directory. **Is ther... | `pipenv` has no special option for it. But you can use these bash scripts (I made them using the venvs directory `~/.local/share/virtualenvs/` so you should change it if your venvs folder is different)
# PRINT useless venvs:
```
for f in $(find ~/.local/share/virtualenvs/*/.project -type f); do proj_path="$(cat $f)" ... |
56374777 | How do I set an environment variable in the shebang (#!) of a script that will be run by Bash? | 10 | 2019-05-30 08:49:29 | <p>Or, why doesn't this work, assuming you correctly set the file as executable? (On my system it just hangs, but can be killed with ^C.)</p>
<pre><code>#!/usr/bin/env TEST=TEST python
print('hello')
</code></pre>
<p>While this does:</p>
<pre><code>#!/usr/bin/env python
print('hello')
</code></pre>
<p>As does this:... | 4,926 | 1,901,658 | 2020-05-10 10:02:00 | 61,709,728 | 12 | 2020-05-10 09:24:50 | 13,510,460 | 2020-05-10 10:02:00 | https://stackoverflow.com/q/56374777 | https://stackoverflow.com/a/61709728 | <p>Since version 8.30 env has the option -S, which make things
work also in linux:</p>
<p>Use</p>
<pre><code>#!/usr/bin/env -S TEST=TEST python
</code></pre>
| <p>Since version 8.30 env has the option -S, which make things work also in linux:</p> <p>Use</p> <pre><code>#!/usr/bin/env -S TEST=TEST python </code></pre> | 34, 387 | bash, unix | <h1>How do I set an environment variable in the shebang (#!) of a script that will be run by Bash?</h1>
<p>Or, why doesn't this work, assuming you correctly set the file as executable? (On my system it just hangs, but can be killed with ^C.)</p>
<pre><code>#!/usr/bin/env TEST=TEST python
print('hello')
</code></pre>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,774 | bash | # How do I set an environment variable in the shebang (#!) of a script that will be run by Bash?
Or, why doesn't this work, assuming you correctly set the file as executable? (On my system it just hangs, but can be killed with ^C.)
```
#!/usr/bin/env TEST=TEST python
print('hello')
```
While this does:
```
#!/usr/b... | Since version 8.30 env has the option -S, which make things
work also in linux:
Use
```
#!/usr/bin/env -S TEST=TEST python
``` |
61376154 | How to install Microsoft Windows Terminal in Windows 10 version 1909 | 10 | 2020-04-22 22:28:02 | <p><strong>[Note]</strong> <em>this is a historic problem that is specific to Windows 10 version 1909, which does not satisfy the Windows Terminal requirement by then. It would no longer be a problem for most nowadays systems.</em></p>
<p>Alright, this should be a fairly simple question, but failing every possibilities... | 31,927 | 2,125,837 | 2021-09-23 00:50:51 | 61,623,625 | 12 | 2020-05-05 21:45:44 | 6,654,942 | 2020-11-16 17:50:02 | https://stackoverflow.com/q/61376154 | https://stackoverflow.com/a/61623625 | <p>Installing it straight from the Microsoft Store didn't work for me either. In Windows 10 1909, I did (it's an msix). Note that the appx commands are <em>gone</em> in powershell 7.1.</p>
<pre><code>Add-AppxPackage Microsoft.WindowsTerminal_0.11.1191.0_8wekyb3d8bbwe.msixbundle
</code></pre>
<p>and it installed ok.</... | <p>Installing it straight from the Microsoft Store didn't work for me either. In Windows 10 1909, I did (it's an msix). Note that the appx commands are <em>gone</em> in powershell 7.1.</p> <pre><code>Add-AppxPackage Microsoft.WindowsTerminal_0.11.1191.0_8wekyb3d8bbwe.msixbundle </code></pre> <p>and it installed ok.</... | 64, 526, 80758, 138178 | chocolatey, powershell, windows, windows-terminal | <h1>How to install Microsoft Windows Terminal in Windows 10 version 1909</h1>
<p><strong>[Note]</strong> <em>this is a historic problem that is specific to Windows 10 version 1909, which does not satisfy the Windows Terminal requirement by then. It would no longer be a problem for most nowadays systems.</em></p>
<p>Alr... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,775 | bash | # How to install Microsoft Windows Terminal in Windows 10 version 1909
**[Note]** *this is a historic problem that is specific to Windows 10 version 1909, which does not satisfy the Windows Terminal requirement by then. It would no longer be a problem for most nowadays systems.*
Alright, this should be a fairly simpl... | Installing it straight from the Microsoft Store didn't work for me either. In Windows 10 1909, I did (it's an msix). Note that the appx commands are *gone* in powershell 7.1.
```
Add-AppxPackage Microsoft.WindowsTerminal_0.11.1191.0_8wekyb3d8bbwe.msixbundle
```
and it installed ok.
```
get-appxpackage microsoft.wind... |
57517345 | How to check jq result is null or not? | 10 | 2019-08-15 23:29:41 | <p>I'm using jq to parse some JSON. I want to check whether a property exists or not. If it exists I always want to get the first element in the array. Based on this I want to use <code>if then ... else</code>.</p>
<p>My code looks like this:</p>
<pre><code>JSON_INPUT='{"var1":[{"foo":"bar"}],"var2":[{"fooooo":"baaaa... | 17,857 | 2,757,155 | 2020-07-11 16:31:59 | 57,517,465 | 12 | 2019-08-15 23:48:43 | 3,776,858 | 2020-07-11 16:31:59 | https://stackoverflow.com/q/57517345 | https://stackoverflow.com/a/57517465 | <blockquote>
<p>Where is the error?</p>
</blockquote>
<p>Replace</p>
<pre><code>[ -z "${VAR2}" ]
</code></pre>
<p>with</p>
<pre><code>[ "${VAR2}" = "null" ]
</code></pre>
<p>because <code>jq</code> returns string <code>null</code> if <code>var2</code> is not found in JSON file.</p>
<hr />
... | <blockquote> <p>Where is the error?</p> </blockquote> <p>Replace</p> <pre><code>[ -z "${VAR2}" ] </code></pre> <p>with</p> <pre><code>[ "${VAR2}" = "null" ] </code></pre> <p>because <code>jq</code> returns string <code>null</code> if <code>var2</code> is not found in JSON file.</p> <hr /> ... | 387, 390, 694, 1508, 105170 | bash, jq, json, null, shell | <h1>How to check jq result is null or not?</h1>
<p>I'm using jq to parse some JSON. I want to check whether a property exists or not. If it exists I always want to get the first element in the array. Based on this I want to use <code>if then ... else</code>.</p>
<p>My code looks like this:</p>
<pre><code>JSON_INPUT='... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,776 | bash | # How to check jq result is null or not?
I'm using jq to parse some JSON. I want to check whether a property exists or not. If it exists I always want to get the first element in the array. Based on this I want to use `if then ... else`.
My code looks like this:
```
JSON_INPUT='{"var1":[{"foo":"bar"}],"var2":[{"fooo... | > Where is the error?
Replace
```
[ -z "${VAR2}" ]
```
with
```
[ "${VAR2}" = "null" ]
```
because `jq` returns string `null` if `var2` is not found in JSON file.
---
Or use `--exit-status`:
```
if echo "$JSON_INPUT" | jq --exit-status '.var2' >/dev/null; then
echo "exists"
else
echo "does not exist"
fi
``... |
57056770 | Vulnerability assessment enablement on Azure SQL server through ARM template | 10 | 2019-07-16 11:59:39 | <p>I have created my Azure SQL server through ARM templates. To enable the vulnerability assessment I need to enable Advanced data security.
I use the following code in my ARM template inside the resource bracket of the SQL server resource to enable this.</p>
<pre><code> {
"name": "vu... | 9,724 | 6,351,302 | 2021-03-10 11:47:19 | 57,408,182 | 12 | 2019-08-08 08:19:51 | 11,900,669 | 2019-08-08 08:19:51 | https://stackoverflow.com/q/57056770 | https://stackoverflow.com/a/57408182 | <p>The issue you are having is caused by deploying an ARM template with Vulnerability Assessment, but without enabling Advanced Data Security first.</p>
<p>You will have to deploy Advanced Data Security in the ARM template and add a dependency in the Vulnerability Assessment block, so it will only be deployed after Ad... | <p>The issue you are having is caused by deploying an ARM template with Vulnerability Assessment, but without enabling Advanced Data Security first.</p> <p>You will have to deploy Advanced Data Security in the ARM template and add a dependency in the Vulnerability Assessment block, so it will only be deployed after Ad... | 526, 14158, 118486, 118726 | azure, azure-rm-template, azure-sql-server, powershell | <h1>Vulnerability assessment enablement on Azure SQL server through ARM template</h1>
<p>I have created my Azure SQL server through ARM templates. To enable the vulnerability assessment I need to enable Advanced data security.
I use the following code in my ARM template inside the resource bracket of the SQL server res... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,777 | bash | # Vulnerability assessment enablement on Azure SQL server through ARM template
I have created my Azure SQL server through ARM templates. To enable the vulnerability assessment I need to enable Advanced data security.
I use the following code in my ARM template inside the resource bracket of the SQL server resource to ... | The issue you are having is caused by deploying an ARM template with Vulnerability Assessment, but without enabling Advanced Data Security first.
You will have to deploy Advanced Data Security in the ARM template and add a dependency in the Vulnerability Assessment block, so it will only be deployed after Advanced Dat... |
54964666 | bash shell reworking variable replace dots by underscore | 10 | 2019-03-03 01:12:10 | <p>I can't see to get it working :</p>
<pre><code>echo $VERSIONNUMBER
</code></pre>
<p>i get : v0.9.3-beta</p>
<pre><code>VERSIONNUMBERNAME=${VERSIONNUMBER:1}
echo $VERSIONNUMBERNAME
</code></pre>
<p>I get : 0.9.3-beta</p>
<pre><code>VERSION=${VERSIONNUMBERNAME/./_}
echo $VERSION
</code></pre>
<p>I get : 0_9.3-be... | 9,312 | 4,770,754 | 2022-05-10 12:45:43 | 54,972,920 | 12 | 2019-03-03 19:40:52 | 2,584,475 | 2019-03-03 19:40:52 | https://stackoverflow.com/q/54964666 | https://stackoverflow.com/a/54972920 | <p>You can combine pattern substitution with <code>tr</code>:</p>
<pre><code>VERSION=$( echo ${VERSIONNUMBER:1} | tr '.' '_' )
</code></pre>
| <p>You can combine pattern substitution with <code>tr</code>:</p> <pre><code>VERSION=$( echo ${VERSIONNUMBER:1} | tr '.' '_' ) </code></pre> | 387, 390, 531 | bash, scripting, shell | <h1>bash shell reworking variable replace dots by underscore</h1>
<p>I can't see to get it working :</p>
<pre><code>echo $VERSIONNUMBER
</code></pre>
<p>i get : v0.9.3-beta</p>
<pre><code>VERSIONNUMBERNAME=${VERSIONNUMBER:1}
echo $VERSIONNUMBERNAME
</code></pre>
<p>I get : 0.9.3-beta</p>
<pre><code>VERSION=${VERSI... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,778 | bash | # bash shell reworking variable replace dots by underscore
I can't see to get it working :
```
echo $VERSIONNUMBER
```
i get : v0.9.3-beta
```
VERSIONNUMBERNAME=${VERSIONNUMBER:1}
echo $VERSIONNUMBERNAME
```
I get : 0.9.3-beta
```
VERSION=${VERSIONNUMBERNAME/./_}
echo $VERSION
```
I get : 0_9.3-beta
I want to h... | You can combine pattern substitution with `tr`:
```
VERSION=$( echo ${VERSIONNUMBER:1} | tr '.' '_' )
``` |
48522415 | Are the cmdlets in a pipeline executing in parallel? | 10 | 2018-01-30 13:17:51 | <p>I spotted an interesting statement in "PowerShell Notes for professionals" whitepaper - <strong>"In a pipeline series each function runs parallel to the others, like parallel threads"</strong>:</p>
<p><a href="https://i.sstatic.net/7S8Oo.png" rel="noreferrer"><img src="https://i.sstatic.net/7S8Oo.png" alt="enter im... | 2,383 | 1,022,219 | 2019-09-24 21:07:17 | 48,523,475 | 12 | 2018-01-30 14:12:38 | 712,649 | 2019-09-24 21:07:17 | https://stackoverflow.com/q/48522415 | https://stackoverflow.com/a/48523475 | <h1>It's kinda true, but not really at all.</h1>
<p>What do I mean with that? First, let's get your documentation question out of the way. The following is from paragraph §3.13 of the <a href="https://www.microsoft.com/en-us/download/details.aspx?id=36389" rel="nofollow noreferrer">PowerShell version 3.0 Language Spec... | <h1>It's kinda true, but not really at all.</h1> <p>What do I mean with that? First, let's get your documentation question out of the way. The following is from paragraph §3.13 of the <a href="https://www.microsoft.com/en-us/download/details.aspx?id=36389" rel="nofollow noreferrer">PowerShell version 3.0 Language Spec... | 353, 526, 2844 | parallel-processing, pipeline, powershell | <h1>Are the cmdlets in a pipeline executing in parallel?</h1>
<p>I spotted an interesting statement in "PowerShell Notes for professionals" whitepaper - <strong>"In a pipeline series each function runs parallel to the others, like parallel threads"</strong>:</p>
<p><a href="https://i.sstatic.net/7S8Oo.png" rel="norefe... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,779 | bash | # Are the cmdlets in a pipeline executing in parallel?
I spotted an interesting statement in "PowerShell Notes for professionals" whitepaper - **"In a pipeline series each function runs parallel to the others, like parallel threads"**:
[](https://i.sstat... | # It's kinda true, but not really at all.
What do I mean with that? First, let's get your documentation question out of the way. The following is from paragraph §3.13 of the [PowerShell version 3.0 Language Specification](https://www.microsoft.com/en-us/download/details.aspx?id=36389):
> If a command writes a single ... |
47443380 | Does "argument list too long" restriction apply to shell builtins? | 10 | 2017-11-22 20:28:07 | <p>I have browsed through many <a href="https://stackoverflow.com/questions/11289551/argument-list-too-long-error-for-rm-cp-mv-commands">posts</a> on Stack Overflow as well as a few related communities regarding the <code>argument list too long</code> topic and I don't seem to clearly figure if the length restriction a... | 4,051 | 6,862,601 | 2018-03-24 05:26:09 | 47,443,446 | 12 | 2017-11-22 20:33:03 | 14,122 | 2017-11-22 20:38:11 | https://stackoverflow.com/q/47443380 | https://stackoverflow.com/a/47443446 | <p>In bash, the OS-enforced limitation on command-line length which causes the error <code>argument list too long</code> is not applied to shell builtins.</p>
<p>This error is triggered when the <code>execve()</code> syscall returns the error code <code>E2BIG</code>. There is no <code>execve()</code> call involved whe... | <p>In bash, the OS-enforced limitation on command-line length which causes the error <code>argument list too long</code> is not applied to shell builtins.</p> <p>This error is triggered when the <code>execve()</code> syscall returns the error code <code>E2BIG</code>. There is no <code>execve()</code> call involved whe... | 34, 58, 387, 390, 31134 | bash, command-line-arguments, linux, shell, unix | <h1>Does "argument list too long" restriction apply to shell builtins?</h1>
<p>I have browsed through many <a href="https://stackoverflow.com/questions/11289551/argument-list-too-long-error-for-rm-cp-mv-commands">posts</a> on Stack Overflow as well as a few related communities regarding the <code>argument list too long... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,780 | bash | # Does "argument list too long" restriction apply to shell builtins?
I have browsed through many [posts](https://stackoverflow.com/questions/11289551/argument-list-too-long-error-for-rm-cp-mv-commands) on Stack Overflow as well as a few related communities regarding the `argument list too long` topic and I don't seem ... | In bash, the OS-enforced limitation on command-line length which causes the error `argument list too long` is not applied to shell builtins.
This error is triggered when the `execve()` syscall returns the error code `E2BIG`. There is no `execve()` call involved when invoking a builtin, so the error cannot take place.
... |
45489008 | Vim Opening File E325 Attention Error | 10 | 2017-08-03 15:47:20 | <p>On Git bash windows, I was editing .bash_profile file and then I decided not to save and closed the bash console. Now when I try to open the .bash_profile using vim, I get E325: Attention error. What should I do to fix this?</p>
| 23,925 | 1,546,003 | 2023-11-24 04:08:13 | 45,489,595 | 12 | 2017-08-03 16:15:08 | 813,602 | 2017-08-03 16:15:08 | https://stackoverflow.com/q/45489008 | https://stackoverflow.com/a/45489595 | <p>By closing the console without exiting Vim first, the Vim process got killed, and Vim didn't have a chance to properly shut down. Vim uses <em>swap files</em> to store the last unpersisted changes to a buffer to avoid data loss in case of a crash; you can read the whole story at <code>:help E325</code>.</p>
<p>In y... | <p>By closing the console without exiting Vim first, the Vim process got killed, and Vim didn't have a chance to properly shut down. Vim uses <em>swap files</em> to store the last unpersisted changes to a buffer to avoid data loss in case of a crash; you can read the whole story at <code>:help E325</code>.</p> <p>In y... | 370, 61874 | git-bash, vim | <h1>Vim Opening File E325 Attention Error</h1>
<p>On Git bash windows, I was editing .bash_profile file and then I decided not to save and closed the bash console. Now when I try to open the .bash_profile using vim, I get E325: Attention error. What should I do to fix this?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,781 | bash | # Vim Opening File E325 Attention Error
On Git bash windows, I was editing .bash_profile file and then I decided not to save and closed the bash console. Now when I try to open the .bash_profile using vim, I get E325: Attention error. What should I do to fix this? | By closing the console without exiting Vim first, the Vim process got killed, and Vim didn't have a chance to properly shut down. Vim uses *swap files* to store the last unpersisted changes to a buffer to avoid data loss in case of a crash; you can read the whole story at `:help E325`.
In your case, as you've consciou... |
43565409 | bash script - unable to set variable with double quotes in value | 10 | 2017-04-22 22:41:53 | <p>Need help in fixing this bash script to set a variable with a value including double quotes. Somehow I am defining this incorrectly as my values <code>foo</code> and <code>bar</code> are not enclosed in double quotes as needed.</p>
<p>My script thus far:</p>
<pre><code>#!/usr/local/bin/bash
set -e
set -x
host='12... | 25,389 | 2,045,872 | 2021-11-12 18:16:59 | 43,565,503 | 12 | 2017-04-22 22:55:47 | 6,281,755 | 2017-04-22 23:00:45 | https://stackoverflow.com/q/43565409 | https://stackoverflow.com/a/43565503 | <p>In bash (and other POSIX shells), the following 2 states are equivalent:</p>
<pre><code>_account=foo
_account="foo"
</code></pre>
<p>What you want to do is to preserve the quotations, therefore you can do the following:</p>
<pre><code>_account='"foo"'
</code></pre>
| <p>In bash (and other POSIX shells), the following 2 states are equivalent:</p> <pre><code>_account=foo _account="foo" </code></pre> <p>What you want to do is to preserve the quotations, therefore you can do the following:</p> <pre><code>_account='"foo"' </code></pre> | 34, 387, 390, 4804, 10804 | bash, escaping, quoting, shell, unix | <h1>bash script - unable to set variable with double quotes in value</h1>
<p>Need help in fixing this bash script to set a variable with a value including double quotes. Somehow I am defining this incorrectly as my values <code>foo</code> and <code>bar</code> are not enclosed in double quotes as needed.</p>
<p>My scri... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,782 | bash | # bash script - unable to set variable with double quotes in value
Need help in fixing this bash script to set a variable with a value including double quotes. Somehow I am defining this incorrectly as my values `foo` and `bar` are not enclosed in double quotes as needed.
My script thus far:
```
#!/usr/local/bin/bas... | In bash (and other POSIX shells), the following 2 states are equivalent:
```
_account=foo
_account="foo"
```
What you want to do is to preserve the quotations, therefore you can do the following:
```
_account='"foo"'
``` |
40599282 | How to run PowerShell with admin privileges from current folder? | 10 | 2016-11-14 22:58:02 | <p>How can I run PowerShell from Context menu (holding the shift key) in current folder with admin privileges? Is there a simpler way than type in any code to windows registry?</p>
| 13,698 | 5,468,913 | 2024-04-04 01:39:55 | 40,599,283 | 12 | 2016-11-14 22:58:02 | 5,468,913 | 2024-04-04 01:39:55 | https://stackoverflow.com/q/40599282 | https://stackoverflow.com/a/40599283 | <p>The script below can be pasted into any file with reg extension and run. After that, you will be able to run powershell with admin privileges from current open folder. To do this, you have to hold shift and then right click on empty space in the folder.</p>
<p>Code:</p>
<pre><code>Windows Registry Editor Version 5.0... | <p>The script below can be pasted into any file with reg extension and run. After that, you will be able to run powershell with admin privileges from current open folder. To do this, you have to hold shift and then right click on empty space in the folder.</p> <p>Code:</p> <pre><code>Windows Registry Editor Version 5.0... | 64, 526, 5623 | administrator, powershell, windows | <h1>How to run PowerShell with admin privileges from current folder?</h1>
<p>How can I run PowerShell from Context menu (holding the shift key) in current folder with admin privileges? Is there a simpler way than type in any code to windows registry?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,783 | bash | # How to run PowerShell with admin privileges from current folder?
How can I run PowerShell from Context menu (holding the shift key) in current folder with admin privileges? Is there a simpler way than type in any code to windows registry? | The script below can be pasted into any file with reg extension and run. After that, you will be able to run powershell with admin privileges from current open folder. To do this, you have to hold shift and then right click on empty space in the folder.
Code:
```
Windows Registry Editor Version 5.00
[HKEY_CLASSES_RO... |
40370854 | How does the Get-ChildItem -Exclude Parameter work? | 10 | 2016-11-02 00:52:18 | <p>How does the Get-ChildItem -Exclude parameter work? What rules does it follow?</p>
<p>The Get-Help for Get-ChildItem isn't detailed at all:</p>
<blockquote>
<p>Omits the specified items. The value of this parameter qualifies the
Path parameter. Enter a path element or pattern, such as "*.txt".
Wildcards are... | 7,413 | 216,440 | 2017-04-09 06:28:21 | 40,373,837 | 12 | 2016-11-02 06:40:10 | 5,233,410 | 2016-11-02 06:57:55 | https://stackoverflow.com/q/40370854 | https://stackoverflow.com/a/40373837 | <p><code>Exclude</code> omits child objects based on the <a href="https://msdn.microsoft.com/en-us/library/system.io.filesysteminfo.name(v=vs.110).aspx" rel="noreferrer">Name</a>, </p>
<blockquote>
<p>For files, gets the name of the file. For directories, gets the name
of the last directory in the hierarchy if a h... | <p><code>Exclude</code> omits child objects based on the <a href="https://msdn.microsoft.com/en-us/library/system.io.filesysteminfo.name(v=vs.110).aspx" rel="noreferrer">Name</a>, </p> <blockquote> <p>For files, gets the name of the file. For directories, gets the name of the last directory in the hierarchy if a h... | 526 | powershell | <h1>How does the Get-ChildItem -Exclude Parameter work?</h1>
<p>How does the Get-ChildItem -Exclude parameter work? What rules does it follow?</p>
<p>The Get-Help for Get-ChildItem isn't detailed at all:</p>
<blockquote>
<p>Omits the specified items. The value of this parameter qualifies the
Path parameter. Ente... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,784 | bash | # How does the Get-ChildItem -Exclude Parameter work?
How does the Get-ChildItem -Exclude parameter work? What rules does it follow?
The Get-Help for Get-ChildItem isn't detailed at all:
> Omits the specified items. The value of this parameter qualifies the
> Path parameter. Enter a path element or pattern, such as ... | `Exclude` omits child objects based on the [Name](https://msdn.microsoft.com/en-us/library/system.io.filesysteminfo.name(v=vs.110).aspx),
> For files, gets the name of the file. For directories, gets the name
> of the last directory in the hierarchy if a hierarchy exists.
> Otherwise, the Name property gets the name o... |
40032420 | Using Get-ChildItem to retrieve folder,name,fullname | 10 | 2016-10-13 23:04:38 | <p>I'm currently using this script to pull the Name,Folder,Foldername from a given path:</p>
<pre><code> Get-ChildItem "C:\user\desktop" | Select Name, `
@{ n = 'Folder'; e = { Convert-Path $_.PSParentPath } }, `
@{ n = 'Foldername'; e = { ($_.PSPath -split '[\\]')[-2] } } ,
@{ n = 'Fullname'; e = { Convert-P... | 110,056 | 6,917,873 | 2023-09-15 12:19:31 | 40,033,010 | 12 | 2016-10-14 00:14:13 | 45,375 | 2023-09-15 12:19:31 | https://stackoverflow.com/q/40032420 | https://stackoverflow.com/a/40033010 |
<p>You mistakenly referenced <code>PSParentPath</code> when you meant <code>PSPath</code> to get the full name (full filesystem path):</p>
<pre class="lang-bash prettyprint-override"><code>Get-ChildItem "C:\user\desktop" | Select Name, `
@{ n = 'Folder'; e = { Convert-Path $_.PSParentPath } }, `
@{ n = '... | <p>You mistakenly referenced <code>PSParentPath</code> when you meant <code>PSPath</code> to get the full name (full filesystem path):</p> <pre class="lang-bash prettyprint-override"><code>Get-ChildItem "C:\user\desktop" | Select Name, ` @{ n = 'Folder'; e = { Convert-Path $_.PSParentPath } }, ` @{ n = '... | 526 | powershell | <h1>Using Get-ChildItem to retrieve folder,name,fullname</h1>
<p>I'm currently using this script to pull the Name,Folder,Foldername from a given path:</p>
<pre><code> Get-ChildItem "C:\user\desktop" | Select Name, `
@{ n = 'Folder'; e = { Convert-Path $_.PSParentPath } }, `
@{ n = 'Foldername'; e = { ($_.PSPath... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,785 | bash | # Using Get-ChildItem to retrieve folder,name,fullname
I'm currently using this script to pull the Name,Folder,Foldername from a given path:
```
Get-ChildItem "C:\user\desktop" | Select Name, `
@{ n = 'Folder'; e = { Convert-Path $_.PSParentPath } }, `
@{ n = 'Foldername'; e = { ($_.PSPath -split '[\\]')[-2] ... | You mistakenly referenced `PSParentPath` when you meant `PSPath` to get the full name (full filesystem path):
```
Get-ChildItem "C:\user\desktop" | Select Name, `
@{ n = 'Folder'; e = { Convert-Path $_.PSParentPath } }, `
@{ n = 'Foldername'; e = { ($_.PSPath -split '[\\]')[-2] } } ,
@{ n = 'Fullname'; e = { Con... |
39001517 | Features obligatory for TERM=dumb terminal | 10 | 2016-08-17 16:09:27 | <p>I am looking to implement a remote client in <a href="/questions/tagged/golang" class="post-tag" title="show questions tagged 'golang'" rel="tag">golang</a> which connects to Linux through <code>nc</code> and starts <code>bash</code>. So I need to tell <code>bash</code> what features I can parse from the <co... | 16,917 | 239,247 | 2023-08-14 08:05:39 | 39,005,551 | 12 | 2016-08-17 20:18:07 | 4,518,274 | 2016-08-17 20:24:06 | https://stackoverflow.com/q/39001517 | https://stackoverflow.com/a/39005551 | <p>Going to the source can help. The terminal database has comments. Here is a <a href="http://invisible-island.net/ncurses/terminfo.src.html#tic-dumb" rel="noreferrer">slice from that</a>:</p>
<pre><code>#### Specials
#
# Special "terminals". These are used to label tty lines when you don't
# know what ki... | <p>Going to the source can help. The terminal database has comments. Here is a <a href="http://invisible-island.net/ncurses/terminfo.src.html#tic-dumb" rel="noreferrer">slice from that</a>:</p> <pre><code>#### Specials # # Special "terminals". These are used to label tty lines when you don't # know what ki... | 58, 390, 391, 15627, 31089 | go, linux, shell, terminal, terminfo | <h1>Features obligatory for TERM=dumb terminal</h1>
<p>I am looking to implement a remote client in <a href="/questions/tagged/golang" class="post-tag" title="show questions tagged 'golang'" rel="tag">golang</a> which connects to Linux through <code>nc</code> and starts <code>bash</code>. So I need to tell <cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,786 | bash | # Features obligatory for TERM=dumb terminal
I am looking to implement a remote client in [golang](/questions/tagged/golang "show questions tagged 'golang'") which connects to Linux through `nc` and starts `bash`. So I need to tell `bash` what features I can parse from the `stdout` that it sends to me, and how I am go... | Going to the source can help. The terminal database has comments. Here is a [slice from that](http://invisible-island.net/ncurses/terminfo.src.html#tic-dumb):
```
#### Specials
#
# Special "terminals". These are used to label tty lines when you don't
# know what kind of terminal is on it. The characteristics of an u... |
34144681 | Conditionally omit a command line option in bash | 10 | 2015-12-07 22:39:42 | <p>I have a long command which I want to modify in a certain case to either include an option or not.</p>
<p>E.g. </p>
<pre><code>java -jar compiler.jar --externs "$externs"
--foo "another" --bar "more"
</code></pre>
<p>where I want the <code>--externs "$externs"</code> to be omitted completely if <code>$externs... | 1,799 | 2,407,870 | 2019-04-19 02:40:51 | 34,144,799 | 12 | 2015-12-07 22:48:58 | 14,122 | 2015-12-07 23:06:11 | https://stackoverflow.com/q/34144681 | https://stackoverflow.com/a/34144799 | <p>This is what the <code>${key:+WORDS}</code> expansion is for:</p>
<pre><code>java ... ${externs:+--externs "$externs"}
</code></pre>
<hr>
<p>It's also a common idiom to use an array for the purpose:</p>
<pre><code>args=( )
if [[ $externs ]]; then
args+=( --externs "$externs" )
fi
java ... "${args[@]}"
</code>... | <p>This is what the <code>${key:+WORDS}</code> expansion is for:</p> <pre><code>java ... ${externs:+--externs "$externs"} </code></pre> <hr> <p>It's also a common idiom to use an array for the purpose:</p> <pre><code>args=( ) if [[ $externs ]]; then args+=( --externs "$externs" ) fi java ... "${args[@]}" </code>... | 387, 31134 | bash, command-line-arguments | <h1>Conditionally omit a command line option in bash</h1>
<p>I have a long command which I want to modify in a certain case to either include an option or not.</p>
<p>E.g. </p>
<pre><code>java -jar compiler.jar --externs "$externs"
--foo "another" --bar "more"
</code></pre>
<p>where I want the <code>--externs "$... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,787 | bash | # Conditionally omit a command line option in bash
I have a long command which I want to modify in a certain case to either include an option or not.
E.g.
```
java -jar compiler.jar --externs "$externs"
--foo "another" --bar "more"
```
where I want the `--externs "$externs"` to be omitted completely if `$extern... | This is what the `${key:+WORDS}` expansion is for:
```
java ... ${externs:+--externs "$externs"}
```
---
It's also a common idiom to use an array for the purpose:
```
args=( )
if [[ $externs ]]; then
args+=( --externs "$externs" )
fi
java ... "${args[@]}"
``` |
32143894 | In Powershell, how can i get a Base64encoded memorystream of a local zip file? | 10 | 2015-08-21 15:15:10 | <p>i've been trying to use the AWS Update-LMFunctionCode to deploy my file to an existing lambda function in AWS. </p>
<p>Differing from the Publish-LMFunction where I can provide just a path to the zipFile (-FunctionZip), the Update-LMFunction wants a memorystream for its -Zipfile argument.</p>
<p>is there an exampl... | 8,136 | 13,100 | 2015-08-21 17:45:33 | 32,146,403 | 12 | 2015-08-21 17:45:33 | 3,587,167 | 2015-08-21 17:45:33 | https://stackoverflow.com/q/32143894 | https://stackoverflow.com/a/32146403 | <p>Try using the <code>CopyTo</code> method to copy from one stream to another:</p>
<pre><code>try {
$zipFilePath = "index.zip"
$zipFileItem = Get-Item -Path $zipFilePath
$fileStream = $zipFileItem.OpenRead()
$memoryStream = New-Object System.IO.MemoryStream
$fileStream.CopyTo($memoryStream)
U... | <p>Try using the <code>CopyTo</code> method to copy from one stream to another:</p> <pre><code>try { $zipFilePath = "index.zip" $zipFileItem = Get-Item -Path $zipFilePath $fileStream = $zipFileItem.OpenRead() $memoryStream = New-Object System.IO.MemoryStream $fileStream.CopyTo($memoryStream) U... | 526, 33388, 100823, 108737 | amazon-web-services, aws-lambda, aws-powershell, powershell | <h1>In Powershell, how can i get a Base64encoded memorystream of a local zip file?</h1>
<p>i've been trying to use the AWS Update-LMFunctionCode to deploy my file to an existing lambda function in AWS. </p>
<p>Differing from the Publish-LMFunction where I can provide just a path to the zipFile (-FunctionZip), the Upda... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,788 | bash | # In Powershell, how can i get a Base64encoded memorystream of a local zip file?
i've been trying to use the AWS Update-LMFunctionCode to deploy my file to an existing lambda function in AWS.
Differing from the Publish-LMFunction where I can provide just a path to the zipFile (-FunctionZip), the Update-LMFunction wan... | Try using the `CopyTo` method to copy from one stream to another:
```
try {
$zipFilePath = "index.zip"
$zipFileItem = Get-Item -Path $zipFilePath
$fileStream = $zipFileItem.OpenRead()
$memoryStream = New-Object System.IO.MemoryStream
$fileStream.CopyTo($memoryStream)
Update-LMFunctionCode -Fun... |
2097904 | How to prevent from closing out-gridview when a script finishes | 10 | 2010-01-19 23:05:36 | <p>I have a script that presents results using <code>out-gridview</code>. Here is a simple example:</p>
<pre><code>"hello world" | out-gridview
</code></pre>
<p>When I run the script using <em>Run with PowerShell</em>, it will open gridview and close it immediately after it is opened. (I think this is because gridvie... | 14,350 | 121,968 | 2021-12-23 03:50:37 | 32,140,269 | 12 | 2015-08-21 12:23:28 | 5,251,896 | 2015-08-21 14:52:06 | https://stackoverflow.com/q/2097904 | https://stackoverflow.com/a/32140269 | <p>How about:</p>
<pre><code>"hello world" | out-gridview -wait
</code></pre>
<p>According to <a href="https://technet.microsoft.com/en-us/library/hh849920.aspx" rel="noreferrer">the documentation of <code>Out-GridView</code></a>, the option <code>-Wait</code> prevents Windows PowerShell from closing until the Out-Gr... | <p>How about:</p> <pre><code>"hello world" | out-gridview -wait </code></pre> <p>According to <a href="https://technet.microsoft.com/en-us/library/hh849920.aspx" rel="noreferrer">the documentation of <code>Out-GridView</code></a>, the option <code>-Wait</code> prevents Windows PowerShell from closing until the Out-Gr... | 526, 1655 | gridview, powershell | <h1>How to prevent from closing out-gridview when a script finishes</h1>
<p>I have a script that presents results using <code>out-gridview</code>. Here is a simple example:</p>
<pre><code>"hello world" | out-gridview
</code></pre>
<p>When I run the script using <em>Run with PowerShell</em>, it will open gridview and ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,789 | bash | # How to prevent from closing out-gridview when a script finishes
I have a script that presents results using `out-gridview`. Here is a simple example:
```
"hello world" | out-gridview
```
When I run the script using *Run with PowerShell*, it will open gridview and close it immediately after it is opened. (I think t... | How about:
```
"hello world" | out-gridview -wait
```
According to [the documentation of `Out-GridView`](https://technet.microsoft.com/en-us/library/hh849920.aspx), the option `-Wait` prevents Windows PowerShell from closing until the Out-GridView window is closed.
It is available in Windows PowerShell 3.0. |
31949541 | Print Local Group Members in PowerShell 5.0 | 10 | 2015-08-11 18:39:46 | <p>I use the following code to determine members of the local Administrators group:</p>
<pre><code>$obj_group = [ADSI]"WinNT://localhost/Administrators,group"
$members=@($obj_group.Invoke("Members"))|foreach{$_.GetType().InvokeMember("Name","GetProperty",$null,$_,$null)}
Write-Output "Current local Administrators: $me... | 6,213 | 21,962 | 2024-07-05 11:27:51 | 32,121,238 | 12 | 2015-08-20 14:40:09 | 2,001,273 | 2015-08-20 14:40:09 | https://stackoverflow.com/q/31949541 | https://stackoverflow.com/a/32121238 | <p>Ran into this issue myself and figured out a workaround (tested in windows 10 and 8.1)</p>
<pre><code>$obj_group = [ADSI]"WinNT://localhost/Administrators,group"
$members= @($obj_group.psbase.Invoke("Members")) | foreach{([ADSI]$_).InvokeGet("Name")}
Write-Output "Current local Administrators: $members"
</code></pr... | <p>Ran into this issue myself and figured out a workaround (tested in windows 10 and 8.1)</p> <pre><code>$obj_group = [ADSI]"WinNT://localhost/Administrators,group" $members= @($obj_group.psbase.Invoke("Members")) | foreach{([ADSI]$_).InvokeGet("Name")} Write-Output "Current local Administrators: $members" </code></pr... | 526, 6282, 10401, 107329, 108010 | active-directory, adsi, powershell, powershell-5.0, windows-10 | <h1>Print Local Group Members in PowerShell 5.0</h1>
<p>I use the following code to determine members of the local Administrators group:</p>
<pre><code>$obj_group = [ADSI]"WinNT://localhost/Administrators,group"
$members=@($obj_group.Invoke("Members"))|foreach{$_.GetType().InvokeMember("Name","GetProperty",$null,$_,$n... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,790 | bash | # Print Local Group Members in PowerShell 5.0
I use the following code to determine members of the local Administrators group:
```
$obj_group = [ADSI]"WinNT://localhost/Administrators,group"
$members=@($obj_group.Invoke("Members"))|foreach{$_.GetType().InvokeMember("Name","GetProperty",$null,$_,$null)}
Write-Output "... | Ran into this issue myself and figured out a workaround (tested in windows 10 and 8.1)
```
$obj_group = [ADSI]"WinNT://localhost/Administrators,group"
$members= @($obj_group.psbase.Invoke("Members")) | foreach{([ADSI]$_).InvokeGet("Name")}
Write-Output "Current local Administrators: $members"
``` |
13995715 | Bash while loop wait until task has completed | 10 | 2012-12-21 19:01:49 | <p>I have a bash script that I created to process videos from within a folder and it's subfolders:</p>
<pre><code>find . -type f -name '*.mkv' | while read file;
do
ffmpeg -i $file ...
done
</code></pre>
<p>The problem: Instead of the while loop waiting ffmpeg to complete, it continues iterate through the loop. The... | 7,250 | 246,795 | 2015-07-30 20:42:08 | 31,733,643 | 12 | 2015-07-30 20:42:08 | 246,795 | 2015-07-30 20:42:08 | https://stackoverflow.com/q/13995715 | https://stackoverflow.com/a/31733643 | <p>I realize I posted this a while ago but I found the solution. Thanks for all of the responses. Providing the -nostdin param to ffmpeg will do the trick. It will process only the current file before moving onto the next file for processing.</p>
<p>ffmpeg's -nostdin option avoids attempting to read user input from st... | <p>I realize I posted this a while ago but I found the solution. Thanks for all of the responses. Providing the -nostdin param to ffmpeg will do the trick. It will process only the current file before moving onto the next file for processing.</p> <p>ffmpeg's -nostdin option avoids attempting to read user input from st... | 387, 3847, 17310 | bash, ffmpeg, while-loop | <h1>Bash while loop wait until task has completed</h1>
<p>I have a bash script that I created to process videos from within a folder and it's subfolders:</p>
<pre><code>find . -type f -name '*.mkv' | while read file;
do
ffmpeg -i $file ...
done
</code></pre>
<p>The problem: Instead of the while loop waiting ffmpeg ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,791 | bash | # Bash while loop wait until task has completed
I have a bash script that I created to process videos from within a folder and it's subfolders:
```
find . -type f -name '*.mkv' | while read file;
do
ffmpeg -i $file ...
done
```
The problem: Instead of the while loop waiting ffmpeg to complete, it continues iterate... | I realize I posted this a while ago but I found the solution. Thanks for all of the responses. Providing the -nostdin param to ffmpeg will do the trick. It will process only the current file before moving onto the next file for processing.
ffmpeg's -nostdin option avoids attempting to read user input from stdin otherw... |
31293635 | How to store output from printf with formatting in a variable? | 10 | 2015-07-08 13:06:51 | <p>I would like to store the output of <code>printf</code> with formatting in a variable, but it strips off the formatting for some reason.</p>
<p>This is the correct output</p>
<pre><code>$ printf "%-40s %8s %9s %7s" "File system" "Free" "Refquota" "Free %"
File system Free Refquot... | 12,383 | 3,293,148 | 2015-07-08 13:19:58 | 31,293,735 | 12 | 2015-07-08 13:10:56 | 130,641 | 2015-07-08 13:10:56 | https://stackoverflow.com/q/31293635 | https://stackoverflow.com/a/31293735 | <p><code>echo</code> will print each of it's arguments in order, separated by one space. You are passing a bunch of different arguments to <code>echo</code>.</p>
<p>The simple solution is to quote <code>$A</code>:</p>
<pre><code>A=$(printf "%-40s %8s %9s %7s" "File system" "Free" "Refquota" "Free %")
echo "$A"
</co... | <p><code>echo</code> will print each of it's arguments in order, separated by one space. You are passing a bunch of different arguments to <code>echo</code>.</p> <p>The simple solution is to quote <code>$A</code>:</p> <pre><code>A=$(printf "%-40s %8s %9s %7s" "File system" "Free" "Refquota" "Free %") echo "$A" </co... | 58, 387, 1156, 13824 | bash, echo, linux, printf | <h1>How to store output from printf with formatting in a variable?</h1>
<p>I would like to store the output of <code>printf</code> with formatting in a variable, but it strips off the formatting for some reason.</p>
<p>This is the correct output</p>
<pre><code>$ printf "%-40s %8s %9s %7s" "File system" "Free" "Refqu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,792 | bash | # How to store output from printf with formatting in a variable?
I would like to store the output of `printf` with formatting in a variable, but it strips off the formatting for some reason.
This is the correct output
```
$ printf "%-40s %8s %9s %7s" "File system" "Free" "Refquota" "Free %"
File system ... | `echo` will print each of it's arguments in order, separated by one space. You are passing a bunch of different arguments to `echo`.
The simple solution is to quote `$A`:
```
A=$(printf "%-40s %8s %9s %7s" "File system" "Free" "Refquota" "Free %")
echo "$A"
``` |
30792435 | Implement the subcommand pattern in PowerShell | 10 | 2015-06-11 22:21:31 | <p>Is it possible to implement the subcommand pattern in PowerShell? Something like:</p>
<pre><code>command [subcommand] [options] [files]
</code></pre>
<p>Examples: Git, svn, Homebrew</p>
<p>What would be the general architecture? A single function that delegates the actual work to script blocks? Each subcommand... | 6,897 | 134,367 | 2024-02-16 04:33:08 | 30,795,074 | 12 | 2015-06-12 03:58:26 | 323,582 | 2024-02-16 04:33:08 | https://stackoverflow.com/q/30792435 | https://stackoverflow.com/a/30795074 | <p>I thought of this pattern and found two ways of doing this. I did not find
real applications in my practice, so the research is rather academic. But
the scripts below work fine.</p>
<p>An existing tool which implements this pattern (in its own way) is
<a href="https://github.com/lukesampson/scoop" rel="nofollow nore... | <p>I thought of this pattern and found two ways of doing this. I did not find real applications in my practice, so the research is rather academic. But the scripts below work fine.</p> <p>An existing tool which implements this pattern (in its own way) is <a href="https://github.com/lukesampson/scoop" rel="nofollow nore... | 526, 73157 | powershell, powershell-3.0 | <h1>Implement the subcommand pattern in PowerShell</h1>
<p>Is it possible to implement the subcommand pattern in PowerShell? Something like:</p>
<pre><code>command [subcommand] [options] [files]
</code></pre>
<p>Examples: Git, svn, Homebrew</p>
<p>What would be the general architecture? A single function that dele... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,793 | bash | # Implement the subcommand pattern in PowerShell
Is it possible to implement the subcommand pattern in PowerShell? Something like:
```
command [subcommand] [options] [files]
```
Examples: Git, svn, Homebrew
What would be the general architecture? A single function that delegates the actual work to script blocks? Ea... | I thought of this pattern and found two ways of doing this. I did not find
real applications in my practice, so the research is rather academic. But
the scripts below work fine.
An existing tool which implements this pattern (in its own way) is
[scoop](https://github.com/lukesampson/scoop).
---
The pattern *subcomma... |
29628635 | Why is `source /home/vagrant/.bashrc` not working in a Vagrant shell provisioning script? | 10 | 2015-04-14 13:28:17 | <p>I'm <a href="https://stackoverflow.com/questions/29569573/updating-bashrc-and-environment-variables-during-vagrant-provisioning">having problems</a> with a shell provisioning script used by Vagrant, as it's not executing <code>source /home/vagrant/.bashrc</code>. I've reduced the problem down to this...</p>
<p>With... | 2,658 | 250,962 | 2015-04-14 13:51:11 | 29,629,200 | 12 | 2015-04-14 13:51:11 | 144,913 | 2015-04-14 13:51:11 | https://stackoverflow.com/q/29628635 | https://stackoverflow.com/a/29629200 | <p>You need to remove the “exit if not running interactively” bit (e.g. <code>[ -z "$PS1" ] && return</code>) from the top of your <code>.bashrc</code>.</p>
| <p>You need to remove the “exit if not running interactively” bit (e.g. <code>[ -z "$PS1" ] && return</code>) from the top of your <code>.bashrc</code>.</p> | 390, 66981 | shell, vagrant | <h1>Why is `source /home/vagrant/.bashrc` not working in a Vagrant shell provisioning script?</h1>
<p>I'm <a href="https://stackoverflow.com/questions/29569573/updating-bashrc-and-environment-variables-during-vagrant-provisioning">having problems</a> with a shell provisioning script used by Vagrant, as it's not executi... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,794 | bash | # Why is `source /home/vagrant/.bashrc` not working in a Vagrant shell provisioning script?
I'm [having problems](https://stackoverflow.com/questions/29569573/updating-bashrc-and-environment-variables-during-vagrant-provisioning) with a shell provisioning script used by Vagrant, as it's not executing `source /home/vag... | You need to remove the “exit if not running interactively” bit (e.g. `[ -z "$PS1" ] && return`) from the top of your `.bashrc`. |
29321171 | How to send custom signal to bash daemon process? | 10 | 2015-03-22 21:10:40 | <p>I have simple bash daemon running (with root privileges ) in background which suppose to do <code>action1</code> or/and <code>action2</code> when notified.</p>
<p>How do I notify it/send some kind of signal on which it will react?</p>
<p>I've tried scenarios with checking file change every 1 sec or more often, but... | 9,620 | 1,770,582 | 2015-03-28 18:47:18 | 29,321,172 | 12 | 2015-03-22 21:16:01 | 3,476,849 | 2015-03-22 21:16:01 | https://stackoverflow.com/q/29321171 | https://stackoverflow.com/a/29321172 | <p>You can send signals to a process using the <code>kill</code> command. There is a range of standard signals as well as two user defined signals, which you can let your script handle whichever way you prefer. Here is how this could look in a script</p>
<pre><code>#!/bin/bash
handler(){
echo "Handler was called"... | <p>You can send signals to a process using the <code>kill</code> command. There is a range of standard signals as well as two user defined signals, which you can let your script handle whichever way you prefer. Here is how this could look in a script</p> <pre><code>#!/bin/bash handler(){ echo "Handler was called"... | 387, 2481, 2510 | bash, daemon, signals | <h1>How to send custom signal to bash daemon process?</h1>
<p>I have simple bash daemon running (with root privileges ) in background which suppose to do <code>action1</code> or/and <code>action2</code> when notified.</p>
<p>How do I notify it/send some kind of signal on which it will react?</p>
<p>I've tried scenari... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,795 | bash | # How to send custom signal to bash daemon process?
I have simple bash daemon running (with root privileges ) in background which suppose to do `action1` or/and `action2` when notified.
How do I notify it/send some kind of signal on which it will react?
I've tried scenarios with checking file change every 1 sec or m... | You can send signals to a process using the `kill` command. There is a range of standard signals as well as two user defined signals, which you can let your script handle whichever way you prefer. Here is how this could look in a script
```
#!/bin/bash
handler(){
echo "Handler was called"
}
trap handler USR1
wh... |
26078533 | How to pass SQL query to psql as a argument containing double quotes | 10 | 2014-09-27 19:46:43 | <p>I am trying to:</p>
<pre><code>psql -c "COPY ( SELECT * FROM "Users" LIMIT 10 ) TO STDOUT WITH CSV HEADER" > out.csv
</code></pre>
<p>However double quotes inside query (<code>"Users"</code>) are removed and psql returns error that <code>Relation users does not exist</code>. I tried to escape quotes like this <... | 5,988 | 606,521 | 2014-09-27 21:10:53 | 26,078,903 | 12 | 2014-09-27 20:26:35 | 606,521 | 2014-09-27 21:10:53 | https://stackoverflow.com/q/26078533 | https://stackoverflow.com/a/26078903 | <p>And here is the right answer (it works for me):</p>
<pre><code>echo 'COPY ( SELECT * FROM "Users" LIMIT 10 ) TO STDOUT WITH CSV HEADER' | psql > out.csv
</code></pre>
<p>And even better (it allows to use single and double quotes without any escaping):</p>
<pre><code>psql > out.csv <<EOT
COPY
(SELECT i... | <p>And here is the right answer (it works for me):</p> <pre><code>echo 'COPY ( SELECT * FROM "Users" LIMIT 10 ) TO STDOUT WITH CSV HEADER' | psql > out.csv </code></pre> <p>And even better (it allows to use single and double quotes without any escaping):</p> <pre><code>psql > out.csv <<EOT COPY (SELECT i... | 256, 369, 387, 82549 | bash, macos, postgresql, psql | <h1>How to pass SQL query to psql as a argument containing double quotes</h1>
<p>I am trying to:</p>
<pre><code>psql -c "COPY ( SELECT * FROM "Users" LIMIT 10 ) TO STDOUT WITH CSV HEADER" > out.csv
</code></pre>
<p>However double quotes inside query (<code>"Users"</code>) are removed and psql returns error that <c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,796 | bash | # How to pass SQL query to psql as a argument containing double quotes
I am trying to:
```
psql -c "COPY ( SELECT * FROM "Users" LIMIT 10 ) TO STDOUT WITH CSV HEADER" > out.csv
```
However double quotes inside query (`"Users"`) are removed and psql returns error that `Relation users does not exist`. I tried to escap... | And here is the right answer (it works for me):
```
echo 'COPY ( SELECT * FROM "Users" LIMIT 10 ) TO STDOUT WITH CSV HEADER' | psql > out.csv
```
And even better (it allows to use single and double quotes without any escaping):
```
psql > out.csv <<EOT
COPY
(SELECT id, email, "displayName", "firstName", "lastName", ... |
25656667 | mongodb debugging - ReferenceError: console is not defined | 10 | 2014-09-04 03:05:04 | <p>I got <code>js</code> file to run within <code>mongodb</code> where I got <code>console.log</code> expression for debugging:</p>
<pre><code>use test;
db.city.find().snapshot().forEach(function(city){
var Pos = city.Pos;
if (Pos)
{
longLat = Pos.split(" ");
console.log("longLat"); // f... | 6,612 | 1,024,794 | 2018-06-12 19:50:06 | 25,656,873 | 12 | 2014-09-04 03:34:37 | 2,313,887 | 2014-09-04 03:34:37 | https://stackoverflow.com/q/25656667 | https://stackoverflow.com/a/25656873 |
<p>Use the <code>print</code> or <code>printjson</code> methods instead. These are used to emit just like console.log() within the shell:</p>
<pre class="lang-js prettyprint-override"><code> if (Pos)
{
longLat = Pos.split(" ");
print("longLat"); // for debugging ---------------------------- ... | <p>Use the <code>print</code> or <code>printjson</code> methods instead. These are used to emit just like console.log() within the shell:</p> <pre class="lang-js prettyprint-override"><code> if (Pos) { longLat = Pos.split(" "); print("longLat"); // for debugging ---------------------------- ... | 3, 30073, 79553 | javascript, mongodb, mongodb-shell | <h1>mongodb debugging - ReferenceError: console is not defined</h1>
<p>I got <code>js</code> file to run within <code>mongodb</code> where I got <code>console.log</code> expression for debugging:</p>
<pre><code>use test;
db.city.find().snapshot().forEach(function(city){
var Pos = city.Pos;
if (Pos)
{
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,797 | bash | # mongodb debugging - ReferenceError: console is not defined
I got `js` file to run within `mongodb` where I got `console.log` expression for debugging:
```
use test;
db.city.find().snapshot().forEach(function(city){
var Pos = city.Pos;
if (Pos)
{
longLat = Pos.split(" ");
console.log("l... | Use the `print` or `printjson` methods instead. These are used to emit just like console.log() within the shell:
```
if (Pos)
{
longLat = Pos.split(" ");
print("longLat"); // for debugging ----------------------------
printjson(longLat);
``` |
24524505 | How to build-run vNext application from Windows Powershell? | 10 | 2014-07-02 06:44:14 | <p>I'm trying to build a console application in .NET vNext from Windows PowerShell. So far I have upgraded the package by </p>
<blockquote>
<p>kvm upgrade</p>
</blockquote>
<p>from which I got package version "KRE-svr50-x86.1.0.0-alpha3-10070" and also checked the "alias" to conform the version.</p>
<p>Now, I wrot... | 1,236 | 2,587,755 | 2015-02-10 05:41:12 | 24,558,383 | 12 | 2014-07-03 15:56:49 | 3,796,568 | 2014-07-03 15:56:49 | https://stackoverflow.com/q/24524505 | https://stackoverflow.com/a/24558383 | <p>Your problem is related to nuget configuration.</p>
<p>To see the way it works go to your project.json folder and do a "kpm restore". you will see:</p>
<blockquote>
<p>Unable to locate System.Console >= 4.0.0.0</p>
</blockquote>
<p>This happends because the kpm uses a different nugget repository namely: <a href... | <p>Your problem is related to nuget configuration.</p> <p>To see the way it works go to your project.json folder and do a "kpm restore". you will see:</p> <blockquote> <p>Unable to locate System.Console >= 4.0.0.0</p> </blockquote> <p>This happends because the kpm uses a different nugget repository namely: <a href... | 9, 526, 117274 | asp.net-core, c#, powershell | <h1>How to build-run vNext application from Windows Powershell?</h1>
<p>I'm trying to build a console application in .NET vNext from Windows PowerShell. So far I have upgraded the package by </p>
<blockquote>
<p>kvm upgrade</p>
</blockquote>
<p>from which I got package version "KRE-svr50-x86.1.0.0-alpha3-10070" and... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,798 | bash | # How to build-run vNext application from Windows Powershell?
I'm trying to build a console application in .NET vNext from Windows PowerShell. So far I have upgraded the package by
> kvm upgrade
from which I got package version "KRE-svr50-x86.1.0.0-alpha3-10070" and also checked the "alias" to conform the version.
... | Your problem is related to nuget configuration.
To see the way it works go to your project.json folder and do a "kpm restore". you will see:
> Unable to locate System.Console >= 4.0.0.0
This happends because the kpm uses a different nugget repository namely: <https://www.myget.org/F/aspnetvnext/>
That repository ha... |
19962645 | bash function grep --exclude-dir not working | 10 | 2013-11-13 19:28:11 | <p>I have the following function defined in my .bashrc, but for some reason the --exclude-dir option is not excluding the .git directory. Can anyone see what I've done wrong? I'm using Ubuntu 13.10 if that helps.</p>
<pre><code>function fif # find in files
{
pattern=${1?" Usage: fif <word_pattern> [files pa... | 11,975 | 448,749 | 2017-09-22 00:58:13 | 19,965,417 | 12 | 2013-11-13 22:08:49 | 368,630 | 2013-11-13 22:08:49 | https://stackoverflow.com/q/19962645 | https://stackoverflow.com/a/19965417 | <p>Do a <code>man grep</code> on your system, and see what version you have. Your version of grep may not be able to use <code>--exclude-dirs</code>.</p>
<p>You're really better off using <code>find</code> to find the files you want, then use <code>grep</code> to parse them:</p>
<pre><code>$ find . -name '.git' -type... | <p>Do a <code>man grep</code> on your system, and see what version you have. Your version of grep may not be able to use <code>--exclude-dirs</code>.</p> <p>You're really better off using <code>find</code> to find the files you want, then use <code>grep</code> to parse them:</p> <pre><code>$ find . -name '.git' -type... | 387, 1271, 10193 | bash, find, grep | <h1>bash function grep --exclude-dir not working</h1>
<p>I have the following function defined in my .bashrc, but for some reason the --exclude-dir option is not excluding the .git directory. Can anyone see what I've done wrong? I'm using Ubuntu 13.10 if that helps.</p>
<pre><code>function fif # find in files
{
pa... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,799 | bash | # bash function grep --exclude-dir not working
I have the following function defined in my .bashrc, but for some reason the --exclude-dir option is not excluding the .git directory. Can anyone see what I've done wrong? I'm using Ubuntu 13.10 if that helps.
```
function fif # find in files
{
pattern=${1?" Usage: fi... | Do a `man grep` on your system, and see what version you have. Your version of grep may not be able to use `--exclude-dirs`.
You're really better off using `find` to find the files you want, then use `grep` to parse them:
```
$ find . -name '.git' -type d -prune \
-o -name "*.min.*" -prune \
-o -type f -exe... |
19762365 | sed help: matching and replacing a literal "\n" (not the newline) | 10 | 2013-11-04 05:51:45 | <p>i have a file which contains several instances of <strong>\n</strong>.</p>
<p>i would like to replace them with actual newlines, but sed doesn't recognize the <strong>\n</strong>.</p>
<p>i tried</p>
<pre><code>sed -r -e 's/\n/\n/'
sed -r -e 's/\\n/\n/'
sed -r -e 's/[\n]/\n/'
</code></pre>
<p>and many other ways ... | 9,003 | 2,951,533 | 2021-08-29 07:04:46 | 19,762,404 | 12 | 2013-11-04 05:55:04 | 2,477,215 | 2013-11-04 05:55:04 | https://stackoverflow.com/q/19762365 | https://stackoverflow.com/a/19762404 | <p>Can you please try this</p>
<pre><code>sed -i 's/\\n/\n/g' input_filename
</code></pre>
| <p>Can you please try this</p> <pre><code>sed -i 's/\\n/\n/g' input_filename </code></pre> | 58, 387, 3705, 5282, 12282 | bash, linux, newline, pattern-matching, sed | <h1>sed help: matching and replacing a literal "\n" (not the newline)</h1>
<p>i have a file which contains several instances of <strong>\n</strong>.</p>
<p>i would like to replace them with actual newlines, but sed doesn't recognize the <strong>\n</strong>.</p>
<p>i tried</p>
<pre><code>sed -r -e 's/\n/\n/'
sed -r -... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,800 | bash | # sed help: matching and replacing a literal "\n" (not the newline)
i have a file which contains several instances of **\n**.
i would like to replace them with actual newlines, but sed doesn't recognize the **\n**.
i tried
```
sed -r -e 's/\n/\n/'
sed -r -e 's/\\n/\n/'
sed -r -e 's/[\n]/\n/'
```
and many other way... | Can you please try this
```
sed -i 's/\\n/\n/g' input_filename
``` |
19524723 | Pipe an input to C++ cin from Bash | 10 | 2013-10-22 17:40:30 | <p>I'm trying to write a simple Bash script to compile my C++ code, in this case it's a very simple program that just reads input into a vector and then prints the content of the vector.</p>
<p>C++ code:</p>
<pre><code> #include <string>
#include <iostream>
#include <vector>
using na... | 17,552 | 136,935 | 2013-10-22 18:05:56 | 19,524,936 | 12 | 2013-10-22 17:51:59 | 315,052 | 2013-10-22 17:51:59 | https://stackoverflow.com/q/19524723 | https://stackoverflow.com/a/19524936 | <p>You have to first compile the program to create an executable. Then, you run the executable. Unlike a scripting language's interpreter, <code>g++</code> does not interpret the source file, but compiles the source to create binary images.</p>
<pre><code>#! /bin/bash
g++ main.cpp
./a.out < "input.txt" > "output... | <p>You have to first compile the program to create an executable. Then, you run the executable. Unlike a scripting language's interpreter, <code>g++</code> does not interpret the source file, but compiles the source to create binary images.</p> <pre><code>#! /bin/bash g++ main.cpp ./a.out < "input.txt" > "output... | 10, 387, 5486, 5813, 9754 | bash, c++, cin, input, pipe | <h1>Pipe an input to C++ cin from Bash</h1>
<p>I'm trying to write a simple Bash script to compile my C++ code, in this case it's a very simple program that just reads input into a vector and then prints the content of the vector.</p>
<p>C++ code:</p>
<pre><code> #include <string>
#include <iostream&g... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,801 | bash | # Pipe an input to C++ cin from Bash
I'm trying to write a simple Bash script to compile my C++ code, in this case it's a very simple program that just reads input into a vector and then prints the content of the vector.
C++ code:
```
#include <string>
#include <iostream>
#include <vector>
using nam... | You have to first compile the program to create an executable. Then, you run the executable. Unlike a scripting language's interpreter, `g++` does not interpret the source file, but compiles the source to create binary images.
```
#! /bin/bash
g++ main.cpp
./a.out < "input.txt" > "output.txt"
``` |
19182286 | How to run SQL in shell script | 10 | 2013-10-04 13:21:05 | <p>How do you run a SQL command in a shell script while setting a variable? I had tried this method and it isn't executing the command, it is thinking the command is just a string.</p>
<pre><code>#!/bin/ksh
variable1=`sqlplus -s username/pw@oracle_instance <<EOF
SET PAGESIZE 0 FEEDBACK OFF VERIFY OFF HEADING OF... | 203,692 | 338,387 | 2020-08-04 16:05:32 | 19,182,287 | 12 | 2013-10-04 13:21:05 | 338,387 | 2013-10-04 13:21:05 | https://stackoverflow.com/q/19182286 | https://stackoverflow.com/a/19182287 | <pre><code>#!/bin/ksh
variable1=$(
echo "set feed off
set pages 0
select count(*) from table;
exit
" | sqlplus -s username/password@oracle_instance
)
echo "found count = $variable1"
</code></pre>
| <pre><code>#!/bin/ksh variable1=$( echo "set feed off set pages 0 select count(*) from table; exit " | sqlplus -s username/password@oracle_instance ) echo "found count = $variable1" </code></pre> | 22, 34, 390, 165558 | oracle-database, shell, sql, unix | <h1>How to run SQL in shell script</h1>
<p>How do you run a SQL command in a shell script while setting a variable? I had tried this method and it isn't executing the command, it is thinking the command is just a string.</p>
<pre><code>#!/bin/ksh
variable1=`sqlplus -s username/pw@oracle_instance <<EOF
SET PAGES... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,802 | bash | # How to run SQL in shell script
How do you run a SQL command in a shell script while setting a variable? I had tried this method and it isn't executing the command, it is thinking the command is just a string.
```
#!/bin/ksh
variable1=`sqlplus -s username/pw@oracle_instance <<EOF
SET PAGESIZE 0 FEEDBACK OFF VERIFY O... | ```
#!/bin/ksh
variable1=$(
echo "set feed off
set pages 0
select count(*) from table;
exit
" | sqlplus -s username/password@oracle_instance
)
echo "found count = $variable1"
``` |
16649467 | Parsing/passing command line arguments to a bash script - what is the difference between "$@" and "$*"? | 10 | 2013-05-20 12:23:19 | <p>I am using a bash script to call and execute a <code>.jar</code> file from any location without having to constantly enter its explicit path.</p>
<p>The <code>.jar</code> requires additional variable parameters to be specified at execution, and as these can be anything, they cannot be hard coded into the script.</p... | 13,271 | 2,329,155 | 2024-10-01 17:20:12 | 16,649,550 | 12 | 2013-05-20 12:28:40 | 1,030,675 | 2024-10-01 17:20:12 | https://stackoverflow.com/q/16649467 | https://stackoverflow.com/a/16649550 | <p><code>"$@"</code> corresponds to <code>"$1" "$2" "$3"</code> etc. <code>"$*"</code> corresponds to <code>"$1 $2 $3"</code> which you do not seem to need. (In fact, it's <code>"$1${IFS:0:1}$2${IFS:0:1}$3"</code>, but if you don't change <code>$IFS<... | <p><code>"$@"</code> corresponds to <code>"$1" "$2" "$3"</code> etc. <code>"$*"</code> corresponds to <code>"$1 $2 $3"</code> which you do not seem to need. (In fact, it's <code>"$1${IFS:0:1}$2${IFS:0:1}$3"</code>, but if you don't change <code>$IFS<... | 387, 2313, 18362, 31134 | argument-passing, arguments, bash, command-line-arguments | <h1>Parsing/passing command line arguments to a bash script - what is the difference between "$@" and "$*"?</h1>
<p>I am using a bash script to call and execute a <code>.jar</code> file from any location without having to constantly enter its explicit path.</p>
<p>The <code>.jar</code> requires additional variable par... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,803 | bash | # Parsing/passing command line arguments to a bash script - what is the difference between "$@" and "$*"?
I am using a bash script to call and execute a `.jar` file from any location without having to constantly enter its explicit path.
The `.jar` requires additional variable parameters to be specified at execution, ... | `"$@"` corresponds to `"$1" "$2" "$3"` etc. `"$*"` corresponds to `"$1 $2 $3"` which you do not seem to need. (In fact, it's `"$1${IFS:0:1}$2${IFS:0:1}$3"`, but if you don't change `$IFS`, it exapnds to the same string).
Without quotes, there is no difference, they both correspond to `$1 $2 $3` etc. |
15500204 | Makefile: Passing command line arguments to file inside Makefile | 10 | 2013-03-19 12:58:15 | <p>Inside my Makfile I have the following, </p>
<pre><code>smktestrun: smktest
@../projects/test.sh
</code></pre>
<p>And I call this using: </p>
<pre><code>Make smktestrun
</code></pre>
<p>But sometimes I need to pass an parameter/argument along with this file (test.sh)</p>
<p>So basically I would like: </p>
... | 23,023 | 966,739 | 2013-03-19 17:22:46 | 15,500,301 | 12 | 2013-03-19 13:03:05 | 1,126,841 | 2013-03-19 13:03:05 | https://stackoverflow.com/q/15500204 | https://stackoverflow.com/a/15500301 | <p>Something like</p>
<pre><code>smktestrun: smktest
@../projects/test.sh $(TESTARGS)
</code></pre>
<p>Then call the Makefile with</p>
<pre><code>$ make smktestrun TESTARGS="-abc"
</code></pre>
| <p>Something like</p> <pre><code>smktestrun: smktest @../projects/test.sh $(TESTARGS) </code></pre> <p>Then call the Makefile with</p> <pre><code>$ make smktestrun TESTARGS="-abc" </code></pre> | 390, 4301, 31134 | command-line-arguments, makefile, shell | <h1>Makefile: Passing command line arguments to file inside Makefile</h1>
<p>Inside my Makfile I have the following, </p>
<pre><code>smktestrun: smktest
@../projects/test.sh
</code></pre>
<p>And I call this using: </p>
<pre><code>Make smktestrun
</code></pre>
<p>But sometimes I need to pass an parameter/argumen... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,804 | bash | # Makefile: Passing command line arguments to file inside Makefile
Inside my Makfile I have the following,
```
smktestrun: smktest
@../projects/test.sh
```
And I call this using:
```
Make smktestrun
```
But sometimes I need to pass an parameter/argument along with this file (test.sh)
So basically I would like... | Something like
```
smktestrun: smktest
@../projects/test.sh $(TESTARGS)
```
Then call the Makefile with
```
$ make smktestrun TESTARGS="-abc"
``` |
15382728 | Passing "native" object to background jobs | 10 | 2013-03-13 10:29:37 | <p>Here is what I'd like to achieve in one way or another. </p>
<p>I have a custom assembly defining some objects. In my script, I create a custom object that I'd like to pass to a script block, keeping that object behavior.</p>
<pre><code>Add-Type -AssemblyName MyCustomDLL
$global:object = new-object MyCustomDLL.My... | 5,403 | 311,712 | 2013-03-13 13:43:41 | 15,387,081 | 12 | 2013-03-13 13:43:41 | 323,582 | 2013-03-13 13:43:41 | https://stackoverflow.com/q/15382728 | https://stackoverflow.com/a/15387081 | <p>Instead of background jobs you may use <code>PowerShell</code> with <code>BeginInvoke</code>, <code>EndInvoke</code>. Here is the simple but working example of passing a live object in a "job", changing it there, getting the results:</p>
<pre><code># live object to be passed in a job and changed there
$liveObject =... | <p>Instead of background jobs you may use <code>PowerShell</code> with <code>BeginInvoke</code>, <code>EndInvoke</code>. Here is the simple but working example of passing a live object in a "job", changing it there, getting the results:</p> <pre><code># live object to be passed in a job and changed there $liveObject =... | 526, 2182, 77232 | powershell, psobject, scope | <h1>Passing "native" object to background jobs</h1>
<p>Here is what I'd like to achieve in one way or another. </p>
<p>I have a custom assembly defining some objects. In my script, I create a custom object that I'd like to pass to a script block, keeping that object behavior.</p>
<pre><code>Add-Type -AssemblyName MyC... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,805 | bash | # Passing "native" object to background jobs
Here is what I'd like to achieve in one way or another.
I have a custom assembly defining some objects. In my script, I create a custom object that I'd like to pass to a script block, keeping that object behavior.
```
Add-Type -AssemblyName MyCustomDLL
$global:object = n... | Instead of background jobs you may use `PowerShell` with `BeginInvoke`, `EndInvoke`. Here is the simple but working example of passing a live object in a "job", changing it there, getting the results:
```
# live object to be passed in a job and changed there
$liveObject = @{ data = 42}
# job script
$script = {
pa... |
11987761 | How to find date wise history of commands being fired | 10 | 2012-08-16 13:03:35 | <p>How can I make the history command display the date and time information in addition to the command line?</p>
| 22,071 | 290,535 | 2018-08-17 17:31:34 | 11,987,907 | 12 | 2012-08-16 13:10:49 | 556,072 | 2012-08-16 14:15:32 | https://stackoverflow.com/q/11987761 | https://stackoverflow.com/a/11987907 | <p>The history of executed commands is stored by your shell. Try adding something like this to you <code>~/.bashrc</code></p>
<pre><code>export HISTTIMEFORMAT="%m/%d - %H:%M:%S: "
</code></pre>
<p>It will change the <code>HISTTIMEFORMAT</code> variable and bash will store a timestamp in its history accordingly. Then ... | <p>The history of executed commands is stored by your shell. Try adding something like this to you <code>~/.bashrc</code></p> <pre><code>export HISTTIMEFORMAT="%m/%d - %H:%M:%S: " </code></pre> <p>It will change the <code>HISTTIMEFORMAT</code> variable and bash will store a timestamp in its history accordingly. Then ... | 387, 1318 | bash, history | <h1>How to find date wise history of commands being fired</h1>
<p>How can I make the history command display the date and time information in addition to the command line?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,806 | bash | # How to find date wise history of commands being fired
How can I make the history command display the date and time information in addition to the command line? | The history of executed commands is stored by your shell. Try adding something like this to you `~/.bashrc`
```
export HISTTIMEFORMAT="%m/%d - %H:%M:%S: "
```
It will change the `HISTTIMEFORMAT` variable and bash will store a timestamp in its history accordingly. Then your history will look like this
```
487 08/16 ... |
11976861 | Bash: What's the difference between "rm -d" and "rm -R"? | 10 | 2012-08-15 20:34:58 | <h1>Questions</h1>
<ul>
<li>What is the difference between the <code>rm -d</code> and <code>rm -R</code> commands in Bash?</li>
<li>Which one should I use?</li>
</ul>
<h1>Details</h1>
<p>According to the man page for the <code>rm</code> command:</p>
<ul>
<li><code>rm -d</code> attempts to remove directories as well... | 13,952 | 560,642 | 2016-08-06 10:29:08 | 11,976,889 | 12 | 2012-08-15 20:37:48 | 1,126,841 | 2012-08-15 20:37:48 | https://stackoverflow.com/q/11976861 | https://stackoverflow.com/a/11976889 | <p>Ordinarily, <code>rm</code> will not remove a directory, even if it is empty. <code>rm -d</code> just makes <code>rm</code> act like <code>rmdir</code>. It still refuses to remove the directory if it isn't empty, but will do so if it is empty.</p>
<p><code>rm -R</code> is the full recursive delete, removing the dir... | <p>Ordinarily, <code>rm</code> will not remove a directory, even if it is empty. <code>rm -d</code> just makes <code>rm</code> act like <code>rmdir</code>. It still refuses to remove the directory if it isn't empty, but will do so if it is empty.</p> <p><code>rm -R</code> is the full recursive delete, removing the dir... | 387, 391, 5610 | bash, rm, terminal | <h1>Bash: What's the difference between "rm -d" and "rm -R"?</h1>
<h1>Questions</h1>
<ul>
<li>What is the difference between the <code>rm -d</code> and <code>rm -R</code> commands in Bash?</li>
<li>Which one should I use?</li>
</ul>
<h1>Details</h1>
<p>According to the man page for the <code>rm</code> command:</p>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,807 | bash | # Bash: What's the difference between "rm -d" and "rm -R"?
# Questions
- What is the difference between the `rm -d` and `rm -R` commands in Bash?
- Which one should I use?
# Details
According to the man page for the `rm` command:
- `rm -d` attempts to remove directories as well as other types of
files.
- `rm -R`... | Ordinarily, `rm` will not remove a directory, even if it is empty. `rm -d` just makes `rm` act like `rmdir`. It still refuses to remove the directory if it isn't empty, but will do so if it is empty.
`rm -R` is the full recursive delete, removing the directory and all its contents.
I've never used `-d`, as I didn't k... |
11375426 | How to remove duplicates from a file and write to the same file? | 10 | 2012-07-07 13:31:10 | <p>I know my title is not much self-explanatory but let me try to explain it here.</p>
<p>I have a file name <code>test.txt</code> which has some duplicate lines. Now, what I want to do is remove those duplicate lines and at the same time <code>update test.txt</code> with the new content.</p>
<p><strong>test.txt</str... | 6,820 | 933,999 | 2015-04-20 12:22:38 | 11,375,474 | 12 | 2012-07-07 13:37:33 | 967,492 | 2012-07-07 13:37:33 | https://stackoverflow.com/q/11375426 | https://stackoverflow.com/a/11375474 | <p>This might work for you:</p>
<pre><code>sort -u -o test.txt test.txt
</code></pre>
| <p>This might work for you:</p> <pre><code>sort -u -o test.txt test.txt </code></pre> | 134, 387, 5310, 12147, 12189 | bash, duplicates, file, in-place, sorting | <h1>How to remove duplicates from a file and write to the same file?</h1>
<p>I know my title is not much self-explanatory but let me try to explain it here.</p>
<p>I have a file name <code>test.txt</code> which has some duplicate lines. Now, what I want to do is remove those duplicate lines and at the same time <code>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,808 | bash | # How to remove duplicates from a file and write to the same file?
I know my title is not much self-explanatory but let me try to explain it here.
I have a file name `test.txt` which has some duplicate lines. Now, what I want to do is remove those duplicate lines and at the same time `update test.txt` with the new co... | This might work for you:
```
sort -u -o test.txt test.txt
``` |
10536089 | BASH: When reading user input, Enter brings new line | 10 | 2012-05-10 14:23:16 | <p>I need following sample bash script to behave as follows:</p>
<pre class="lang-sh prettyprint-override"><code>echo -e "Enter name: \c"
read U_IP_NAME
echo -e "You said your name is : $U_IP_NAME"
</code></pre>
<p>This will output to:</p>
<pre><code>Enter name: Alok
You said your name is : Alok
</code></pre>
<p>Bu... | 9,845 | 1,387,333 | 2012-05-10 17:22:15 | 10,536,829 | 12 | 2012-05-10 15:02:12 | 45,249 | 2012-05-10 15:02:12 | https://stackoverflow.com/q/10536089 | https://stackoverflow.com/a/10536829 | <p>You want to move the cursor up one line. This is achieved with <code>tput cuu1</code>:</p>
<pre><code>echo -e "Enter name: \c"
read U_IP_NAME
tput cuu1
echo -e "Your said your name is : $U_IP_NAME"
</code></pre>
<p>More info with <code>man tput</code> and <code>man terminfo</code>.</p>
| <p>You want to move the cursor up one line. This is achieved with <code>tput cuu1</code>:</p> <pre><code>echo -e "Enter name: \c" read U_IP_NAME tput cuu1 echo -e "Your said your name is : $U_IP_NAME" </code></pre> <p>More info with <code>man tput</code> and <code>man terminfo</code>.</p> | 387 | bash | <h1>BASH: When reading user input, Enter brings new line</h1>
<p>I need following sample bash script to behave as follows:</p>
<pre class="lang-sh prettyprint-override"><code>echo -e "Enter name: \c"
read U_IP_NAME
echo -e "You said your name is : $U_IP_NAME"
</code></pre>
<p>This will output to:</p>
<pre><code>Ente... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,809 | bash | # BASH: When reading user input, Enter brings new line
I need following sample bash script to behave as follows:
```
echo -e "Enter name: \c"
read U_IP_NAME
echo -e "You said your name is : $U_IP_NAME"
```
This will output to:
```
Enter name: Alok
You said your name is : Alok
```
But it I want it to be:
```
You s... | You want to move the cursor up one line. This is achieved with `tput cuu1`:
```
echo -e "Enter name: \c"
read U_IP_NAME
tput cuu1
echo -e "Your said your name is : $U_IP_NAME"
```
More info with `man tput` and `man terminfo`. |
10497425 | Is it possible to use $array=() in bash? | 10 | 2012-05-08 11:08:39 | <p>Two things, first this is my first question in this forum and I do apologise if the formating is all over the place. Second I have not written that many bash scripts, and it tend to be quite a long time between the scripts I produce. </p>
<p>That said, here is my question. </p>
<p>Is it possible to do something li... | 24,087 | 1,362,043 | 2019-05-18 18:34:44 | 10,497,539 | 12 | 2012-05-08 11:16:10 | 1,172,428 | 2012-05-08 11:16:10 | https://stackoverflow.com/q/10497425 | https://stackoverflow.com/a/10497539 | <p>Probably the simplest thing to do is just <code>unset</code> them. An unset variable will act identically to an empty array in most contexts, and <code>unset $array</code> ought to work fine.</p>
| <p>Probably the simplest thing to do is just <code>unset</code> them. An unset variable will act identically to an empty array in most contexts, and <code>unset $array</code> ought to work fine.</p> | 114, 387 | arrays, bash | <h1>Is it possible to use $array=() in bash?</h1>
<p>Two things, first this is my first question in this forum and I do apologise if the formating is all over the place. Second I have not written that many bash scripts, and it tend to be quite a long time between the scripts I produce. </p>
<p>That said, here is my qu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,810 | bash | # Is it possible to use $array=() in bash?
Two things, first this is my first question in this forum and I do apologise if the formating is all over the place. Second I have not written that many bash scripts, and it tend to be quite a long time between the scripts I produce.
That said, here is my question.
Is it po... | Probably the simplest thing to do is just `unset` them. An unset variable will act identically to an empty array in most contexts, and `unset $array` ought to work fine. |
9394629 | How to check if file is being used by another process - Powershell | 10 | 2012-02-22 12:21:48 | <p>I am trying to find a solution which will check whether a file is being used by another process. I don't want to read the contents of the file, as on a 7GB document, this could take a while. Currently I am using the function mentioned below, which is not ideal as the script takes about 5 - 10 minutes to retrieve a ... | 45,217 | 983,965 | 2022-04-20 05:16:56 | 9,411,199 | 12 | 2012-02-23 10:29:58 | 983,965 | 2012-02-23 10:29:58 | https://stackoverflow.com/q/9394629 | https://stackoverflow.com/a/9411199 | <p>Created a function which solves the above problem:</p>
<pre><code> function checkFileStatus($filePath)
{
write-host (getDateTime) "[ACTION][FILECHECK] Checking if" $filePath "is locked"
$fileInfo = New-Object System.IO.FileInfo $filePath
try
{
$fileStream = $fileInf... | <p>Created a function which solves the above problem:</p> <pre><code> function checkFileStatus($filePath) { write-host (getDateTime) "[ACTION][FILECHECK] Checking if" $filePath "is locked" $fileInfo = New-Object System.IO.FileInfo $filePath try { $fileStream = $fileInf... | 1, 526, 5310 | .net, file, powershell | <h1>How to check if file is being used by another process - Powershell</h1>
<p>I am trying to find a solution which will check whether a file is being used by another process. I don't want to read the contents of the file, as on a 7GB document, this could take a while. Currently I am using the function mentioned below,... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,811 | bash | # How to check if file is being used by another process - Powershell
I am trying to find a solution which will check whether a file is being used by another process. I don't want to read the contents of the file, as on a 7GB document, this could take a while. Currently I am using the function mentioned below, which is... | Created a function which solves the above problem:
```
function checkFileStatus($filePath)
{
write-host (getDateTime) "[ACTION][FILECHECK] Checking if" $filePath "is locked"
$fileInfo = New-Object System.IO.FileInfo $filePath
try
{
$fileStream = $fileInfo.Open( [Syste... |
8917480 | Bash completion - how to get rid of unneeded tab presses? | 10 | 2012-01-18 21:12:30 | <p>I use </p>
<pre><code>cur="${COMP_WORDS[COMP_CWORD]}"
opts=`sqlite3 test.db "${QUERY[COMP_CWORD]}"`
SAVEIFS="$IFS"
IFS=$'\n'
COMPREPLY=( $(compgen -S"'" -P"'" -W "${opts}" $cur) )
IFS="$SAVEIFS"
</code></pre>
<p>to get possible variants from the database and complete them with <kbd>TAB</kbd>. As long as thes... | 1,918 | 976,641 | 2012-01-18 22:01:26 | 8,918,119 | 12 | 2012-01-18 22:01:26 | 26,428 | 2012-01-18 22:01:26 | https://stackoverflow.com/q/8917480 | https://stackoverflow.com/a/8918119 | <p>You can try:</p>
<pre><code>bind 'set show-all-if-ambiguous on'
</code></pre>
<p>From <code>man bash</code>:</p>
<pre><code> show-all-if-ambiguous (Off)
This alters the default behavior of the completion functions. If set
to on, words which have more than one possible completion cause the ... | <p>You can try:</p> <pre><code>bind 'set show-all-if-ambiguous on' </code></pre> <p>From <code>man bash</code>:</p> <pre><code> show-all-if-ambiguous (Off) This alters the default behavior of the completion functions. If set to on, words which have more than one possible completion cause the ... | 387, 390, 59778 | bash, bash-completion, shell | <h1>Bash completion - how to get rid of unneeded tab presses?</h1>
<p>I use </p>
<pre><code>cur="${COMP_WORDS[COMP_CWORD]}"
opts=`sqlite3 test.db "${QUERY[COMP_CWORD]}"`
SAVEIFS="$IFS"
IFS=$'\n'
COMPREPLY=( $(compgen -S"'" -P"'" -W "${opts}" $cur) )
IFS="$SAVEIFS"
</code></pre>
<p>to get possible variants from ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,812 | bash | # Bash completion - how to get rid of unneeded tab presses?
I use
```
cur="${COMP_WORDS[COMP_CWORD]}"
opts=`sqlite3 test.db "${QUERY[COMP_CWORD]}"`
SAVEIFS="$IFS"
IFS=$'\n'
COMPREPLY=( $(compgen -S"'" -P"'" -W "${opts}" $cur) )
IFS="$SAVEIFS"
```
to get possible variants from the database and complete them wit... | You can try:
```
bind 'set show-all-if-ambiguous on'
```
From `man bash`:
```
show-all-if-ambiguous (Off)
This alters the default behavior of the completion functions. If set
to on, words which have more than one possible completion cause the
matches to be listed immediately inste... |
8736856 | Counting characters, words, length of the words and total length in a sentence | 10 | 2012-01-05 02:21:08 | <p>I have to write a script that takes a sentence and prints the word count, character count (excluding the spaces), length of each word and the length. I know that there exist <code>wc -m</code> to counter number of characters in the word, but how to make use of it in script?</p>
<pre><code>#!/bin/bash
mystring="one... | 77,971 | 1,098,207 | 2018-12-10 13:17:22 | 8,736,953 | 12 | 2012-01-05 02:40:45 | 493,161 | 2012-01-05 02:50:27 | https://stackoverflow.com/q/8736856 | https://stackoverflow.com/a/8736953 | <p>riffing on Jaypal Singh's answer:</p>
<pre><code>jcomeau@intrepid:~$ mystring="one two three four five"
jcomeau@intrepid:~$ echo "string length: ${#mystring}"
string length: 23
jcomeau@intrepid:~$ echo -n "lengths of words: "; i=0; for token in $mystring; do echo -n "${#token} "; i=$((i+1)); done; echo; echo "word ... | <p>riffing on Jaypal Singh's answer:</p> <pre><code>jcomeau@intrepid:~$ mystring="one two three four five" jcomeau@intrepid:~$ echo "string length: ${#mystring}" string length: 23 jcomeau@intrepid:~$ echo -n "lengths of words: "; i=0; for token in $mystring; do echo -n "${#token} "; i=$((i+1)); done; echo; echo "word ... | 390, 39056 | shell, wc | <h1>Counting characters, words, length of the words and total length in a sentence</h1>
<p>I have to write a script that takes a sentence and prints the word count, character count (excluding the spaces), length of each word and the length. I know that there exist <code>wc -m</code> to counter number of characters in t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,813 | bash | # Counting characters, words, length of the words and total length in a sentence
I have to write a script that takes a sentence and prints the word count, character count (excluding the spaces), length of each word and the length. I know that there exist `wc -m` to counter number of characters in the word, but how to ... | riffing on Jaypal Singh's answer:
```
jcomeau@intrepid:~$ mystring="one two three four five"
jcomeau@intrepid:~$ echo "string length: ${#mystring}"
string length: 23
jcomeau@intrepid:~$ echo -n "lengths of words: "; i=0; for token in $mystring; do echo -n "${#token} "; i=$((i+1)); done; echo; echo "word count: $i"
len... |
7988306 | How to use an enum type in powershell when configuring IIS using the powershell snapin | 10 | 2011-11-02 22:52:33 | <p>I am using the IIS Powershell snapin to configure a new web application from scratch. I am new to PS. The following script will not workl as PS is not recognising the ManagedPipelineMode enum. If I change the value to 0 it will work. How can I get PS to understand th enum. I tried the Add-Type cmdlet and also load t... | 5,593 | 11,711 | 2018-02-27 11:33:04 | 7,988,493 | 12 | 2011-11-02 23:16:20 | 526,535 | 2011-11-02 23:46:03 | https://stackoverflow.com/q/7988306 | https://stackoverflow.com/a/7988493 | <p>It is expecting an integer, even though the underlying property is of type <code>ManagaedPipelineMode</code>. You can do below however:</p>
<pre><code>$AppPool | Set-ItemProperty -Name "managedPipelineMode" -Value ([int] [Microsoft.Web.Administration.ManagedPipelineMode]::Classic)
</code></pre>
<p>PS: </p>
<p>Ins... | <p>It is expecting an integer, even though the underlying property is of type <code>ManagaedPipelineMode</code>. You can do below however:</p> <pre><code>$AppPool | Set-ItemProperty -Name "managedPipelineMode" -Value ([int] [Microsoft.Web.Administration.ManagedPipelineMode]::Classic) </code></pre> <p>PS: </p> <p>Ins... | 526, 1301 | iis-7, powershell | <h1>How to use an enum type in powershell when configuring IIS using the powershell snapin</h1>
<p>I am using the IIS Powershell snapin to configure a new web application from scratch. I am new to PS. The following script will not workl as PS is not recognising the ManagedPipelineMode enum. If I change the value to 0 i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,814 | bash | # How to use an enum type in powershell when configuring IIS using the powershell snapin
I am using the IIS Powershell snapin to configure a new web application from scratch. I am new to PS. The following script will not workl as PS is not recognising the ManagedPipelineMode enum. If I change the value to 0 it will wo... | It is expecting an integer, even though the underlying property is of type `ManagaedPipelineMode`. You can do below however:
```
$AppPool | Set-ItemProperty -Name "managedPipelineMode" -Value ([int] [Microsoft.Web.Administration.ManagedPipelineMode]::Classic)
```
PS:
Instead of
```
$AppPool = Get-ChildItem iis:\app... |
6762531 | How to build and run a shell command based on the contents of several lines in Vim? | 10 | 2011-07-20 13:12:35 | <p>A frequently used feature of Vim for me is filtering a file (or a selection of text) through an external command and replace the selection with the result, e.g.:</p>
<pre><code>:'<,>'!sort
</code></pre>
<p>so</p>
<pre><code>c
b
a
</code></pre>
<p>will be sorted and will result in</p>
<pre><code>a
b
c
</code></... | 6,062 | 139,990 | 2021-01-26 05:59:36 | 6,763,730 | 12 | 2011-07-20 14:43:35 | 438,329 | 2011-07-20 16:23:26 | https://stackoverflow.com/q/6762531 | https://stackoverflow.com/a/6763730 | <p>I suggest you use <code>xargs -L1</code></p>
<p>Example:</p>
<pre><code>:%!xargs -L1 wc -l
</code></pre>
<p>Basically <code>xargs [cmd]</code> will run the following <code>[cmd]</code> with multiple parameters from multiple lines. But with the <code>-L1</code> argument the <code>[cmd]</code> will be executed comm... | <p>I suggest you use <code>xargs -L1</code></p> <p>Example:</p> <pre><code>:%!xargs -L1 wc -l </code></pre> <p>Basically <code>xargs [cmd]</code> will run the following <code>[cmd]</code> with multiple parameters from multiple lines. But with the <code>-L1</code> argument the <code>[cmd]</code> will be executed comm... | 370, 390, 531 | scripting, shell, vim | <h1>How to build and run a shell command based on the contents of several lines in Vim?</h1>
<p>A frequently used feature of Vim for me is filtering a file (or a selection of text) through an external command and replace the selection with the result, e.g.:</p>
<pre><code>:'<,>'!sort
</code></pre>
<p>so</p>
<pre>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,815 | bash | # How to build and run a shell command based on the contents of several lines in Vim?
A frequently used feature of Vim for me is filtering a file (or a selection of text) through an external command and replace the selection with the result, e.g.:
```
:'<,>'!sort
```
so
```
c
b
a
```
will be sorted and will result... | I suggest you use `xargs -L1`
Example:
```
:%!xargs -L1 wc -l
```
Basically `xargs [cmd]` will run the following `[cmd]` with multiple parameters from multiple lines. But with the `-L1` argument the `[cmd]` will be executed command for each line.
If you need to supply a certain order to the arguments for your comma... |
6149238 | Bash script for converting IP Addr string to Hexadecimal format | 10 | 2011-05-27 07:37:19 | <p><code>
IP_ADDR=192.168.1.128</p>
<p>printf '%02X' ${IP_ADDR//./ }; echo
</code></p>
<p>Can some one explain how this simple oneliner converts IP_ADDR to hexadecimal format? I am banging my head trying to find some documentation about this behavior.</p>
| 13,585 | 462,228 | 2018-01-17 17:01:24 | 6,149,254 | 12 | 2011-05-27 07:40:23 | 20,862 | 2011-05-27 07:40:23 | https://stackoverflow.com/q/6149238 | https://stackoverflow.com/a/6149254 | <p><a href="http://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html" rel="noreferrer">Shell Parameter Expansion</a></p>
<pre><code>$ IP_ADDR=192.168.1.128
$ echo ${IP_ADDR//./ }
192 168 1 128
$ printf '%02X' 192 168 1 128 ; echo
C0A80180
</code></pre>
| <p><a href="http://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html" rel="noreferrer">Shell Parameter Expansion</a></p> <pre><code>$ IP_ADDR=192.168.1.128 $ echo ${IP_ADDR//./ } 192 168 1 128 $ printf '%02X' 192 168 1 128 ; echo C0A80180 </code></pre> | 387 | bash | <h1>Bash script for converting IP Addr string to Hexadecimal format</h1>
<p><code>
IP_ADDR=192.168.1.128</p>
<p>printf '%02X' ${IP_ADDR//./ }; echo
</code></p>
<p>Can some one explain how this simple oneliner converts IP_ADDR to hexadecimal format? I am banging my head trying to find some documentation about this beh... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,816 | bash | # Bash script for converting IP Addr string to Hexadecimal format
`IP_ADDR=192.168.1.128`
printf '%02X' ${IP_ADDR//./ }; echo
Can some one explain how this simple oneliner converts IP_ADDR to hexadecimal format? I am banging my head trying to find some documentation about this behavior. | [Shell Parameter Expansion](http://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html)
```
$ IP_ADDR=192.168.1.128
$ echo ${IP_ADDR//./ }
192 168 1 128
$ printf '%02X' 192 168 1 128 ; echo
C0A80180
``` |
5123423 | Error restoring database backup to new database with smo and powershell | 10 | 2011-02-25 22:30:54 | <p>Taking a database backup from another server I'm trying to restore to sqlexpress on the localhost. This restore will work via the gui but I'm having issues restoring it with powershell. I get the following error message:</p>
<pre><code>Exception calling "SqlRestore" with "1" argument(s): "Restore failed for Serve... | 11,362 | 104,783 | 2015-02-02 23:26:19 | 5,125,109 | 12 | 2011-02-26 04:39:16 | 368,847 | 2011-02-26 04:39:16 | https://stackoverflow.com/q/5123423 | https://stackoverflow.com/a/5125109 | <p>I have a very similar script to yours, with a few noteworthy differences:</p>
<ul>
<li>Before calling <code>SqlRestore</code>, I make a call to <code>$server.KillAllProcesses($databaseName)</code>.</li>
<li>I have <code>$smoRestore.NoRecovery = $false</code>, instead of <code>$true</code></li>
<li>I have <code>$smo... | <p>I have a very similar script to yours, with a few noteworthy differences:</p> <ul> <li>Before calling <code>SqlRestore</code>, I make a call to <code>$server.KillAllProcesses($databaseName)</code>.</li> <li>I have <code>$smoRestore.NoRecovery = $false</code>, instead of <code>$true</code></li> <li>I have <code>$smo... | 22, 72, 526, 3123, 5377 | powershell, restore, smo, sql, sql-server | <h1>Error restoring database backup to new database with smo and powershell</h1>
<p>Taking a database backup from another server I'm trying to restore to sqlexpress on the localhost. This restore will work via the gui but I'm having issues restoring it with powershell. I get the following error message:</p>
<pre><co... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,817 | bash | # Error restoring database backup to new database with smo and powershell
Taking a database backup from another server I'm trying to restore to sqlexpress on the localhost. This restore will work via the gui but I'm having issues restoring it with powershell. I get the following error message:
```
Exception calling "... | I have a very similar script to yours, with a few noteworthy differences:
- Before calling `SqlRestore`, I make a call to `$server.KillAllProcesses($databaseName)`.
- I have `$smoRestore.NoRecovery = $false`, instead of `$true`
- I have `$smoRestore.FileNumber = 1`, which you don't have at all. I think this correspond... |
5012958 | What is the advantage of pathmunge over grep? | 10 | 2011-02-16 05:50:52 | <p>Currently working on Solaris 10 in the bash shell.
While looking at a script, I noticed the pathmunge procedure set up to avoid duplication of folder paths in the PATH (it also seems to have the feature to add the necessary folder at the beginning or the end of the PATH).</p>
<p>Apart from the ability to append/pre... | 8,214 | 502,914 | 2019-06-11 14:17:55 | 5,013,051 | 12 | 2011-02-16 06:06:17 | 582,542 | 2019-06-11 14:17:55 | https://stackoverflow.com/q/5012958 | https://stackoverflow.com/a/5013051 | <p>Until 2012, pathmunge used to use grep itself. (Well, egrep, to be precise.)</p>
<p>In Red Hat, CentOS, etc. pathmunge is defined in <code>/etc/profile</code>:</p>
<pre><code>pathmunge () {
if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then
if [ "$2" = "after" ] ; then
PATH=$PAT... | <p>Until 2012, pathmunge used to use grep itself. (Well, egrep, to be precise.)</p> <p>In Red Hat, CentOS, etc. pathmunge is defined in <code>/etc/profile</code>:</p> <pre><code>pathmunge () { if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then if [ "$2" = "after" ] ; then PATH=$PAT... | 387, 12147 | bash, duplicates | <h1>What is the advantage of pathmunge over grep?</h1>
<p>Currently working on Solaris 10 in the bash shell.
While looking at a script, I noticed the pathmunge procedure set up to avoid duplication of folder paths in the PATH (it also seems to have the feature to add the necessary folder at the beginning or the end of ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,818 | bash | # What is the advantage of pathmunge over grep?
Currently working on Solaris 10 in the bash shell.
While looking at a script, I noticed the pathmunge procedure set up to avoid duplication of folder paths in the PATH (it also seems to have the feature to add the necessary folder at the beginning or the end of the PATH)... | Until 2012, pathmunge used to use grep itself. (Well, egrep, to be precise.)
In Red Hat, CentOS, etc. pathmunge is defined in `/etc/profile`:
```
pathmunge () {
if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
... |
4497817 | Save stdout, stderr and stdout+stderr synchronously | 10 | 2010-12-21 09:29:46 | <p>For testing purposes, I would like to save stdout and stderr <em>separately</em> for inspection by subsequent code. For example, a test run with erroneous input should result in output to stderr, but nothing on stdout, while a test run with correct input should result in output to stdout, but nothing to stderr. The ... | 6,243 | 96,588 | 2011-05-11 18:11:52 | 4,498,456 | 12 | 2010-12-21 10:48:37 | 26,428 | 2010-12-21 10:48:37 | https://stackoverflow.com/q/4497817 | https://stackoverflow.com/a/4498456 | <p>Please see <a href="http://mywiki.wooledge.org/BashFAQ/106" rel="noreferrer">BashFAQ/106</a>. It's not easy to have your cake and eat it, too.</p>
<p>From that page:</p>
<blockquote>
<p>But some people won't accept either the loss of separation between stdout and stderr, or the desynchronization of lines. They a... | <p>Please see <a href="http://mywiki.wooledge.org/BashFAQ/106" rel="noreferrer">BashFAQ/106</a>. It's not easy to have your cake and eat it, too.</p> <p>From that page:</p> <blockquote> <p>But some people won't accept either the loss of separation between stdout and stderr, or the desynchronization of lines. They a... | 387, 31901 | bash, http-redirect | <h1>Save stdout, stderr and stdout+stderr synchronously</h1>
<p>For testing purposes, I would like to save stdout and stderr <em>separately</em> for inspection by subsequent code. For example, a test run with erroneous input should result in output to stderr, but nothing on stdout, while a test run with correct input s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,819 | bash | # Save stdout, stderr and stdout+stderr synchronously
For testing purposes, I would like to save stdout and stderr *separately* for inspection by subsequent code. For example, a test run with erroneous input should result in output to stderr, but nothing on stdout, while a test run with correct input should result in ... | Please see [BashFAQ/106](http://mywiki.wooledge.org/BashFAQ/106). It's not easy to have your cake and eat it, too.
From that page:
> But some people won't accept either the loss of separation between stdout and stderr, or the desynchronization of lines. They are purists, and so they ask for the most difficult form of... |
2511496 | How to use file contents as command-line arguments? | 10 | 2010-03-24 21:20:38 | <p>I'd like to use arguments from file as command-line arguments for some commands like gcc or ls.</p>
<p>For example <code>gcc -o output -Wall -Werro</code></p>
<p>as file consist of:</p>
<blockquote>
<p>-o output -Wall -Werro</p>
</blockquote>
<p>Used for gcc command-line call.</p>
| 10,001 | 301,210 | 2012-03-22 02:50:14 | 2,511,528 | 12 | 2010-03-24 21:26:12 | 116,908 | 2010-03-24 23:59:49 | https://stackoverflow.com/q/2511496 | https://stackoverflow.com/a/2511528 | <p>You can use <code>xargs</code>:</p>
<pre><code>cat optionsfile | xargs gcc
</code></pre>
<p>Edit: I've been downvoted because Laurent doesn't know how <code>xargs</code> works, so here's the proof:</p>
<pre><code>$ echo "-o output -Wall -Werro" > optionsfile
$ cat optionsfile | xargs -t gcc
gcc -o output -Wal... | <p>You can use <code>xargs</code>:</p> <pre><code>cat optionsfile | xargs gcc </code></pre> <p>Edit: I've been downvoted because Laurent doesn't know how <code>xargs</code> works, so here's the proof:</p> <pre><code>$ echo "-o output -Wall -Werro" > optionsfile $ cat optionsfile | xargs -t gcc gcc -o output -Wal... | 58, 387 | bash, linux | <h1>How to use file contents as command-line arguments?</h1>
<p>I'd like to use arguments from file as command-line arguments for some commands like gcc or ls.</p>
<p>For example <code>gcc -o output -Wall -Werro</code></p>
<p>as file consist of:</p>
<blockquote>
<p>-o output -Wall -Werro</p>
</blockquote>
<p>Used... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,820 | bash | # How to use file contents as command-line arguments?
I'd like to use arguments from file as command-line arguments for some commands like gcc or ls.
For example `gcc -o output -Wall -Werro`
as file consist of:
> -o output -Wall -Werro
Used for gcc command-line call. | You can use `xargs`:
```
cat optionsfile | xargs gcc
```
Edit: I've been downvoted because Laurent doesn't know how `xargs` works, so here's the proof:
```
$ echo "-o output -Wall -Werro" > optionsfile
$ cat optionsfile | xargs -t gcc
gcc -o output -Wall -Werro
i686-apple-darwin10-gcc-4.2.1: no input files
```
The ... |
683811 | Does PowerShell support OOP? | 10 | 2009-03-25 22:40:57 | <p>What is about such concepts as Class, Interface, Mixin in PowerShell? Does it support OOP? If so, where can I read about this?</p>
| 10,328 | 62,192 | 2018-02-18 22:19:53 | 683,829 | 12 | 2009-03-25 22:49:31 | 5,314 | 2009-03-25 22:49:31 | https://stackoverflow.com/q/683811 | https://stackoverflow.com/a/683829 | <p>You can define new types in PowerShell v2.0 using the <code>Add-Type</code> cmdlet:</p>
<blockquote>
<p><strong>DETAILED DESCRIPTION</strong></p>
<p>The Add-Type cmdlet lets you define a .NET class in your Windows PowerShell session. You can then instantiate objects (by using the New-Object cmdlet) and use t... | <p>You can define new types in PowerShell v2.0 using the <code>Add-Type</code> cmdlet:</p> <blockquote> <p><strong>DETAILED DESCRIPTION</strong></p> <p>The Add-Type cmdlet lets you define a .NET class in your Windows PowerShell session. You can then instantiate objects (by using the New-Object cmdlet) and use t... | 137, 526 | oop, powershell | <h1>Does PowerShell support OOP?</h1>
<p>What is about such concepts as Class, Interface, Mixin in PowerShell? Does it support OOP? If so, where can I read about this?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,821 | bash | # Does PowerShell support OOP?
What is about such concepts as Class, Interface, Mixin in PowerShell? Does it support OOP? If so, where can I read about this? | You can define new types in PowerShell v2.0 using the `Add-Type` cmdlet:
> **DETAILED DESCRIPTION**
>
> The Add-Type cmdlet lets you define a .NET class in your Windows PowerShell session. You can then instantiate objects (by using the New-Object cmdlet) and use the objects, just as you would use any .NET ob
> ject. I... |
75235592 | How to view entire array in MongoDB shell without truncation? | 9 | 2023-01-25 14:42:02 | <p>I am trying to find out the distinct values of a field using the <code>db.collections.distinct(<field>)</code>command.</p>
<p>The above command retrieves all the distinct values of the given field inside an array. But as I have 12k documents all the values are not getting displayed in my console.</p>
<p>This i... | 1,894 | 18,017,663 | 2024-04-04 15:26:45 | 75,235,976 | 12 | 2023-01-25 15:11:26 | 3,027,266 | 2023-01-25 15:11:26 | https://stackoverflow.com/q/75235592 | https://stackoverflow.com/a/75235976 | <p>The <code>mongosh</code> is a Node.js environment. There are several solutions, e.g. <code>JSON.stringify</code> the array or use <a href="https://nodejs.org/api/util.html#utilinspectobject-options" rel="noreferrer">util.inspect</a>.</p>
<pre><code>JSON.stringify(db.collections.distinct(<field>))
util.inspect... | <p>The <code>mongosh</code> is a Node.js environment. There are several solutions, e.g. <code>JSON.stringify</code> the array or use <a href="https://nodejs.org/api/util.html#utilinspectobject-options" rel="noreferrer">util.inspect</a>.</p> <pre><code>JSON.stringify(db.collections.distinct(<field>)) util.inspect... | 30073, 69521 | mongodb, mongo-shell | <h1>How to view entire array in MongoDB shell without truncation?</h1>
<p>I am trying to find out the distinct values of a field using the <code>db.collections.distinct(<field>)</code>command.</p>
<p>The above command retrieves all the distinct values of the given field inside an array. But as I have 12k document... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,822 | bash | # How to view entire array in MongoDB shell without truncation?
I am trying to find out the distinct values of a field using the `db.collections.distinct(<field>)`command.
The above command retrieves all the distinct values of the given field inside an array. But as I have 12k documents all the values are not getting... | The `mongosh` is a Node.js environment. There are several solutions, e.g. `JSON.stringify` the array or use [util.inspect](https://nodejs.org/api/util.html#utilinspectobject-options).
```
JSON.stringify(db.collections.distinct(<field>))
util.inspect(db.collections.distinct(<field>), { maxArrayLength: null })
``` |
73734301 | Toggle Dark/Light Mode in Windows 10 automatically by time of day (without modifying or changing theme!) | 9 | 2022-09-15 16:05:12 | <p>Nowadays most devices allow for an automatic toggle of Dark/Light mode, however Windows 10 doesn't seem to have such a feature. Is there a way to accomplish this? Using the Task Scheduler for example?</p>
<p>There seem to be many examples on how to change the windows "theme" programmatically, but not the l... | 8,152 | 1,605,873 | 2023-06-16 06:00:27 | 73,734,302 | 12 | 2022-09-15 16:05:12 | 1,605,873 | 2022-11-21 14:43:37 | https://stackoverflow.com/q/73734301 | https://stackoverflow.com/a/73734302 | <p>Yes, there is!</p>
<p>It can be a bit tricky to pull off seamesly, but it can be done with the following steps:</p>
<p>Open Task Scheduler and create a new task with the following settings:</p>
<p><em>General</em></p>
<p><a href="https://i.sstatic.net/mrw8h.png" rel="noreferrer"><img src="https://i.sstatic.net/mrw8h... | <p>Yes, there is!</p> <p>It can be a bit tricky to pull off seamesly, but it can be done with the following steps:</p> <p>Open Task Scheduler and create a new task with the following settings:</p> <p><em>General</em></p> <p><a href="https://i.sstatic.net/mrw8h.png" rel="noreferrer"><img src="https://i.sstatic.net/mrw8h... | 526, 7672, 9299, 107329, 146293 | darkmode, powershell, scheduled-tasks, scheduler, windows-10 | <h1>Toggle Dark/Light Mode in Windows 10 automatically by time of day (without modifying or changing theme!)</h1>
<p>Nowadays most devices allow for an automatic toggle of Dark/Light mode, however Windows 10 doesn't seem to have such a feature. Is there a way to accomplish this? Using the Task Scheduler for example?</p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,823 | bash | # Toggle Dark/Light Mode in Windows 10 automatically by time of day (without modifying or changing theme!)
Nowadays most devices allow for an automatic toggle of Dark/Light mode, however Windows 10 doesn't seem to have such a feature. Is there a way to accomplish this? Using the Task Scheduler for example?
There seem... | Yes, there is!
It can be a bit tricky to pull off seamesly, but it can be done with the following steps:
Open Task Scheduler and create a new task with the following settings:
*General*
[](https://i.sstatic.net/mrw8h.png)
- "Run whether user is logged in or ... |
68958466 | PowerShell: Import-Module or Add-Type for .NET assemblies? | 9 | 2021-08-27 19:25:37 | <p>I'm using PowerShell 5.1, Windows 10 x64.</p>
<p>Which of these 2 cmdlets should I use to load .NET assemblies (in particular .NET Framework 4+ assemblies) into PowerShell? What's the core difference between them? I want to load assemblies for accessing types, creating objects, calling methods, etc.</p>
<p>I haven't... | 11,673 | 16,759,994 | 2021-08-27 20:53:01 | 68,959,247 | 12 | 2021-08-27 20:53:01 | 7,411,885 | 2021-08-27 20:53:01 | https://stackoverflow.com/q/68958466 | https://stackoverflow.com/a/68959247 | <p>Powershell has three main ways to import classes, not counting .net methods like <code>reflection.assembly</code>. In general, all of them will do what you need just fine, but have extra features:</p>
<h2>Import-Module</h2>
<p>has by far the most flexibility, and can import basic Modules (usually .psd1 or .psm1 file... | <p>Powershell has three main ways to import classes, not counting .net methods like <code>reflection.assembly</code>. In general, all of them will do what you need just fine, but have extra features:</p> <h2>Import-Module</h2> <p>has by far the most flexibility, and can import basic Modules (usually .psd1 or .psm1 file... | 1, 9, 526, 9650, 149764 | .net, .net-4.0, c#, powershell, powershell-5.1 | <h1>PowerShell: Import-Module or Add-Type for .NET assemblies?</h1>
<p>I'm using PowerShell 5.1, Windows 10 x64.</p>
<p>Which of these 2 cmdlets should I use to load .NET assemblies (in particular .NET Framework 4+ assemblies) into PowerShell? What's the core difference between them? I want to load assemblies for acces... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,825 | bash | # PowerShell: Import-Module or Add-Type for .NET assemblies?
I'm using PowerShell 5.1, Windows 10 x64.
Which of these 2 cmdlets should I use to load .NET assemblies (in particular .NET Framework 4+ assemblies) into PowerShell? What's the core difference between them? I want to load assemblies for accessing types, cre... | Powershell has three main ways to import classes, not counting .net methods like `reflection.assembly`. In general, all of them will do what you need just fine, but have extra features:
## Import-Module
has by far the most flexibility, and can import basic Modules (usually .psd1 or .psm1 files) and their required ass... |
64034156 | Troubleshooting ssh login failure for AWS EC2 using powershell | 9 | 2020-09-23 18:26:24 | <p><em><strong>Short problem description:</strong></em> I had created two new AWS EC2 server instances on Redhat Linux and Ubuntu operating system. I was trying to login to it through SSH via Putty but was getting errors(detailed errors further in question). This is just a short description.</p>
<p><em><strong>Detailed... | 1,706 | 5,866,580 | 2020-09-24 07:33:02 | 64,034,157 | 12 | 2020-09-23 18:26:24 | 5,866,580 | 2020-09-24 00:14:10 | https://stackoverflow.com/q/64034156 | https://stackoverflow.com/a/64034157 | <p><em><strong>Initial troubleshooting:</strong></em></p>
<ol>
<li>My very initial thought was that it could be control M characters in .pem file OR in private key. But when checked key looked fine.</li>
<li>Then I thought it could be inbound rule issue, that we are NOT allowed to do ssh to aws server but NO I was wron... | <p><em><strong>Initial troubleshooting:</strong></em></p> <ol> <li>My very initial thought was that it could be control M characters in .pem file OR in private key. But when checked key looked fine.</li> <li>Then I thought it could be inbound rule issue, that we are NOT allowed to do ssh to aws server but NO I was wron... | 386, 390, 526, 12375, 33388 | amazon-ec2, amazon-web-services, powershell, shell, ssh | <h1>Troubleshooting ssh login failure for AWS EC2 using powershell</h1>
<p><em><strong>Short problem description:</strong></em> I had created two new AWS EC2 server instances on Redhat Linux and Ubuntu operating system. I was trying to login to it through SSH via Putty but was getting errors(detailed errors further in ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,826 | bash | # Troubleshooting ssh login failure for AWS EC2 using powershell
***Short problem description:*** I had created two new AWS EC2 server instances on Redhat Linux and Ubuntu operating system. I was trying to login to it through SSH via Putty but was getting errors(detailed errors further in question). This is just a sho... | ***Initial troubleshooting:***
1. My very initial thought was that it could be control M characters in .pem file OR in private key. But when checked key looked fine.
2. Then I thought it could be inbound rule issue, that we are NOT allowed to do ssh to aws server but NO I was wrong when I checked configuration of serv... |
57116144 | dash '-' after #!/bin/sh - | 9 | 2019-07-19 16:09:07 | <p>I have been working on a few scripts on CentOS 7 and sometimes I see:</p>
<pre><code>#!/bin/sh -
</code></pre>
<p>on the first line. Looking at the man page for <code>sh</code> I see the following under the <code>Special Parameters</code></p>
<pre><code> - Expands to the current option flags as specified... | 2,540 | 158,787 | 2019-07-19 19:10:06 | 57,116,674 | 12 | 2019-07-19 16:49:33 | 147,356 | 2019-07-19 16:56:11 | https://stackoverflow.com/q/57116144 | https://stackoverflow.com/a/57116674 | <p>The documentation you are reading has nothing to do with the command line you're looking at: it's referring to special variables. In this case, if you run <code>echo $-</code> you will see "the current option flags as specified upon invocation...".</p>
<p>If you take a look at the <code>OPTIONS</code> part of t... | <p>The documentation you are reading has nothing to do with the command line you're looking at: it's referring to special variables. In this case, if you run <code>echo $-</code> you will see "the current option flags as specified upon invocation...".</p> <p>If you take a look at the <code>OPTIONS</code> part of t... | 390, 4956, 10327 | centos, sh, shell | <h1>dash '-' after #!/bin/sh -</h1>
<p>I have been working on a few scripts on CentOS 7 and sometimes I see:</p>
<pre><code>#!/bin/sh -
</code></pre>
<p>on the first line. Looking at the man page for <code>sh</code> I see the following under the <code>Special Parameters</code></p>
<pre><code> - Expands to th... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,827 | bash | # dash '-' after #!/bin/sh -
I have been working on a few scripts on CentOS 7 and sometimes I see:
```
#!/bin/sh -
```
on the first line. Looking at the man page for `sh` I see the following under the `Special Parameters`
```
- Expands to the current option flags as specified upon invocation,
b... | The documentation you are reading has nothing to do with the command line you're looking at: it's referring to special variables. In this case, if you run `echo $-` you will see "the current option flags as specified upon invocation...".
If you take a look at the `OPTIONS` part of the `bash` man page, you will find:
... |
54036380 | How to get variables from config file in powershell | 9 | 2019-01-04 09:42:26 | <p>How can i get variables from a config file in XML ?</p>
<p>I am actualy doing this using a .txt config file.</p>
<p>There is my actual code : </p>
<p>Config.txt</p>
<pre><code>[Repertoire de SPO (generalement C:\SPO)]
destinationn="C:\SPO"
[Nom du sous repertoire de SPO (generalement : SPO1)]
sous_destination="... | 22,772 | 8,761,070 | 2020-03-27 03:10:42 | 54,036,821 | 12 | 2019-01-04 10:09:27 | 6,579,295 | 2019-01-04 10:09:27 | https://stackoverflow.com/q/54036380 | https://stackoverflow.com/a/54036821 | <p>Xml is much easier to parse with PowerShell. See following example with comments:</p>
<pre><code>#Translated XML config
@'
<root>
<destinationn>C:\SPO</destinationn>
<sous_destination>SPO1</sous_destination>
<version>1812.4</version>
<applicationPoolName>SPO_A... | <p>Xml is much easier to parse with PowerShell. See following example with comments:</p> <pre><code>#Translated XML config @' <root> <destinationn>C:\SPO</destinationn> <sous_destination>SPO1</sous_destination> <version>1812.4</version> <applicationPoolName>SPO_A... | 360, 526, 3574 | config, parameters, powershell | <h1>How to get variables from config file in powershell</h1>
<p>How can i get variables from a config file in XML ?</p>
<p>I am actualy doing this using a .txt config file.</p>
<p>There is my actual code : </p>
<p>Config.txt</p>
<pre><code>[Repertoire de SPO (generalement C:\SPO)]
destinationn="C:\SPO"
[Nom du sou... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,828 | bash | # How to get variables from config file in powershell
How can i get variables from a config file in XML ?
I am actualy doing this using a .txt config file.
There is my actual code :
Config.txt
```
[Repertoire de SPO (generalement C:\SPO)]
destinationn="C:\SPO"
[Nom du sous repertoire de SPO (generalement : SPO1)]... | Xml is much easier to parse with PowerShell. See following example with comments:
```
#Translated XML config
@'
<root>
<destinationn>C:\SPO</destinationn>
<sous_destination>SPO1</sous_destination>
<version>1812.4</version>
<applicationPoolName>SPO_ADV</applicationPoolName>
<livraisonn>\\path\to\somewhere</li... |
50067877 | Delete a specific line from a 12GB file | 9 | 2018-04-27 17:58:22 | <p>I'm trying to delete a specific line from a 12GB text file.</p>
<p>I do not have the <code>sed -i</code> option available on HP-UX, and other options like saving to a temporary file aren't working because I have only 20GB space available with 12 GB already used by the text file.</p>
<p>Considering the space requir... | 394 | 435,559 | 2018-04-28 21:12:07 | 50,068,760 | 12 | 2018-04-27 19:01:55 | 589,924 | 2018-04-28 21:12:07 | https://stackoverflow.com/q/50067877 | https://stackoverflow.com/a/50068760 | <p>Tie::File is never the answer.</p>
<ul>
<li>It's <em>insanely</em> slow.</li>
<li>It can use up more memory than just slurping the entire file into memory, even if you limit the size of its buffer.</li>
</ul>
<p>You are encountering both of those problems. You encounter every line of the file, so Tie::File will re... | <p>Tie::File is never the answer.</p> <ul> <li>It's <em>insanely</em> slow.</li> <li>It can use up more memory than just slurping the entire file into memory, even if you limit the size of its buffer.</li> </ul> <p>You are encountering both of those problems. You encounter every line of the file, so Tie::File will re... | 34, 387, 580, 5310 | bash, file, perl, unix | <h1>Delete a specific line from a 12GB file</h1>
<p>I'm trying to delete a specific line from a 12GB text file.</p>
<p>I do not have the <code>sed -i</code> option available on HP-UX, and other options like saving to a temporary file aren't working because I have only 20GB space available with 12 GB already used by th... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,829 | bash | # Delete a specific line from a 12GB file
I'm trying to delete a specific line from a 12GB text file.
I do not have the `sed -i` option available on HP-UX, and other options like saving to a temporary file aren't working because I have only 20GB space available with 12 GB already used by the text file.
Considering t... | Tie::File is never the answer.
- It's *insanely* slow.
- It can use up more memory than just slurping the entire file into memory, even if you limit the size of its buffer.
You are encountering both of those problems. You encounter every line of the file, so Tie::File will read the entire file and store the index of ... |
48960190 | Powershell Set-MpPreference -DisableRealtimeMonitoring $true not working correctly | 9 | 2018-02-24 06:53:38 | <p>I must warn you I don't use powershell much. I am trying to turn off windows defender real time protection via powershell I found the command <code>Set-MpPreference -DisableRealtimeMonitoring $true</code> and tried it in admin privileges only to get this</p>
<blockquote>
<p>Set-MpPreference : Operation failed wit... | 61,988 | 9,381,567 | 2025-10-04 19:16:11 | 48,976,055 | 12 | 2018-02-25 16:56:52 | 45,375 | 2023-10-25 02:14:08 | https://stackoverflow.com/q/48960190 | https://stackoverflow.com/a/48976055 | <p>The problem is that the <strong>Windows Defender antivirus services seem to be <em>persistently disabled</em> on your machine</strong>.</p>
<p>It's unfortunate that the <code>Set-MpPreference</code> cmdlet reports this in such an obscure fashion.</p>
<p>To fix this problem, <strong><em>re-enable</em> the Windows Def... | <p>The problem is that the <strong>Windows Defender antivirus services seem to be <em>persistently disabled</em> on your machine</strong>.</p> <p>It's unfortunate that the <code>Set-MpPreference</code> cmdlet reports this in such an obscure fashion.</p> <p>To fix this problem, <strong><em>re-enable</em> the Windows Def... | 136, 526, 2631, 119343 | cmd, powershell, security, windows-defender | <h1>Powershell Set-MpPreference -DisableRealtimeMonitoring $true not working correctly</h1>
<p>I must warn you I don't use powershell much. I am trying to turn off windows defender real time protection via powershell I found the command <code>Set-MpPreference -DisableRealtimeMonitoring $true</code> and tried it in admi... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,830 | bash | # Powershell Set-MpPreference -DisableRealtimeMonitoring $true not working correctly
I must warn you I don't use powershell much. I am trying to turn off windows defender real time protection via powershell I found the command `Set-MpPreference -DisableRealtimeMonitoring $true` and tried it in admin privileges only to... | The problem is that the **Windows Defender antivirus services seem to be *persistently disabled* on your machine**.
It's unfortunate that the `Set-MpPreference` cmdlet reports this in such an obscure fashion.
To fix this problem, ***re-enable* the Windows Defender antivirus services**:
The easiest way to do this is ... |
48967892 | Find command regextype difference between 'posix-extended' and 'posix-egrep' | 9 | 2018-02-24 21:39:14 | <p>The title really says it all. Can anyone point me to where I could find descriptions of the different regex types available to the find command. I'm able to find a list of them but no explanations or comparisons. In particular, what could the difference be between 'posix-egrep' and 'posix-extended,' since egrep is a... | 4,469 | 4,403,787 | 2018-11-27 17:24:35 | 48,967,991 | 12 | 2018-02-24 21:51:15 | 3,040,064 | 2018-02-24 21:51:15 | https://stackoverflow.com/q/48967892 | https://stackoverflow.com/a/48967991 | <p>Let me guide through you how you should use linux's documentation to self-answer questions like this by showing you how exactly I locate information.</p>
<ol>
<li>I run <code>man find</code> to see some basic information of regular expression type by searching the keyword, <code>regular</code>, then I see this:</li... | <p>Let me guide through you how you should use linux's documentation to self-answer questions like this by showing you how exactly I locate information.</p> <ol> <li>I run <code>man find</code> to see some basic information of regular expression type by searching the keyword, <code>regular</code>, then I see this:</li... | 18, 390, 1271, 10327 | grep, regex, sh, shell | <h1>Find command regextype difference between 'posix-extended' and 'posix-egrep'</h1>
<p>The title really says it all. Can anyone point me to where I could find descriptions of the different regex types available to the find command. I'm able to find a list of them but no explanations or comparisons. In particular, wha... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,831 | bash | # Find command regextype difference between 'posix-extended' and 'posix-egrep'
The title really says it all. Can anyone point me to where I could find descriptions of the different regex types available to the find command. I'm able to find a list of them but no explanations or comparisons. In particular, what could t... | Let me guide through you how you should use linux's documentation to self-answer questions like this by showing you how exactly I locate information.
1. I run `man find` to see some basic information of regular expression type by searching the keyword, `regular`, then I see this:
> -regextype type
>
> Changes the reg... |
47639770 | Is there a relatively straightforward way to finalize a CD or DVD in C# or PowerShell? | 9 | 2017-12-04 18:34:10 | <p>First, some clarification of terms. By <strong>finalize,</strong> I don't mean closing a session; I mean writing a lead-out to a CD or DVD in such a way that information can no longer be added to it via the usual means (Roxio, Nero, Windows Explorer, etc.)</p>
<p>I've done a fair amount of research on this. There ... | 6,711 | 102,937 | 2021-02-17 01:22:12 | 48,198,360 | 12 | 2018-01-11 00:51:37 | 5,209,322 | 2018-01-11 05:36:04 | https://stackoverflow.com/q/47639770 | https://stackoverflow.com/a/48198360 | <p>The <code>ForceMediaToBeClosed</code> property of <code>IDiscFormat2Data</code> <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa364886.aspx" rel="noreferrer">controls whether the IMAPI finalizes the disc</a> after the <em>next</em> write: </p>
<blockquote>
<p>Set to VARIANT_TRUE to mark the di... | <p>The <code>ForceMediaToBeClosed</code> property of <code>IDiscFormat2Data</code> <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa364886.aspx" rel="noreferrer">controls whether the IMAPI finalizes the disc</a> after the <em>next</em> write: </p> <blockquote> <p>Set to VARIANT_TRUE to mark the di... | 9, 526, 31319 | c#, imapi, powershell | <h1>Is there a relatively straightforward way to finalize a CD or DVD in C# or PowerShell?</h1>
<p>First, some clarification of terms. By <strong>finalize,</strong> I don't mean closing a session; I mean writing a lead-out to a CD or DVD in such a way that information can no longer be added to it via the usual means (... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,832 | bash | # Is there a relatively straightforward way to finalize a CD or DVD in C# or PowerShell?
First, some clarification of terms. By **finalize,** I don't mean closing a session; I mean writing a lead-out to a CD or DVD in such a way that information can no longer be added to it via the usual means (Roxio, Nero, Windows Ex... | The `ForceMediaToBeClosed` property of `IDiscFormat2Data` [controls whether the IMAPI finalizes the disc](https://msdn.microsoft.com/en-us/library/windows/desktop/aa364886.aspx) after the *next* write:
> Set to VARIANT_TRUE to mark the disc as closed to prohibit additional writes when the next write session ends.
The... |
47212149 | Getting error: bash: parse_git_branch: command not found | 9 | 2017-11-09 21:49:16 | <p>I am running the command:</p>
<pre><code>sudo bash
</code></pre>
<p>But I keep getting an error on my terminal that says, </p>
<pre><code>bash: parse_git_branch: command not found
</code></pre>
<p>Here is my <code>.bash_profile</code> file</p>
<pre><code>parse_git_branch() {
git branch 2> /dev/null | sed... | 9,667 | 8,141,672 | 2023-12-04 04:25:27 | 47,212,660 | 12 | 2017-11-09 22:27:37 | 1,126,841 | 2017-11-09 22:27:37 | https://stackoverflow.com/q/47212149 | https://stackoverflow.com/a/47212660 | <p>The problem is that <code>parse_git_branch</code> is defined in <code>.bash_profile</code>, but not exported. When you run <code>sudo bash</code>, it starts an <em>nonlogin</em> shell that sources <code>.bashrc</code> instead of <code>.bash_profile</code>. <code>PS1</code> was exported and so is defined in the new s... | <p>The problem is that <code>parse_git_branch</code> is defined in <code>.bash_profile</code>, but not exported. When you run <code>sudo bash</code>, it starts an <em>nonlogin</em> shell that sources <code>.bashrc</code> instead of <code>.bash_profile</code>. <code>PS1</code> was exported and so is defined in the new s... | 369, 387, 1674, 61874 | bash, git-bash, macos, sudo | <h1>Getting error: bash: parse_git_branch: command not found</h1>
<p>I am running the command:</p>
<pre><code>sudo bash
</code></pre>
<p>But I keep getting an error on my terminal that says, </p>
<pre><code>bash: parse_git_branch: command not found
</code></pre>
<p>Here is my <code>.bash_profile</code> file</p>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,833 | bash | # Getting error: bash: parse_git_branch: command not found
I am running the command:
```
sudo bash
```
But I keep getting an error on my terminal that says,
```
bash: parse_git_branch: command not found
```
Here is my `.bash_profile` file
```
parse_git_branch() {
git branch 2> /dev/null | sed -e '/^[^*]/d' -e... | The problem is that `parse_git_branch` is defined in `.bash_profile`, but not exported. When you run `sudo bash`, it starts an *nonlogin* shell that sources `.bashrc` instead of `.bash_profile`. `PS1` was exported and so is defined in the new shell, but `parse_git_branch` is not.
Typically, you would define both `PS1`... |
45104509 | Powershell Finally block skipped with Ctrl-C | 9 | 2017-07-14 13:41:14 | <p>I'm writing a monitoring script in Powershell using a Try/Finally to log a message should the script end. The script is intended to run indefinitely, so I want a way to track unintended exiting.</p>
<p>Every other StackOverflow post and <a href="https://msdn.microsoft.com/powershell/reference/5.1/Microsoft.PowerShe... | 8,149 | 4,739,755 | 2024-06-11 21:05:15 | 45,105,609 | 12 | 2017-07-14 14:36:22 | 1,627,055 | 2017-11-24 16:08:39 | https://stackoverflow.com/q/45104509 | https://stackoverflow.com/a/45105609 | <p>The proper answer is that <kbd>Ctrl</kbd>+<kbd>C</kbd> breaks pipeline, as is also stated in that link, and <code>echo</code> uses the pipeline to process its output. Therefore, once you <kbd>Ctrl</kbd>+<kbd>C</kbd>, writing to the pipeline causes the script block to err, and to not process any further commands. The... | <p>The proper answer is that <kbd>Ctrl</kbd>+<kbd>C</kbd> breaks pipeline, as is also stated in that link, and <code>echo</code> uses the pipeline to process its output. Therefore, once you <kbd>Ctrl</kbd>+<kbd>C</kbd>, writing to the pipeline causes the script block to err, and to not process any further commands. The... | 526, 50963, 73157 | powershell, powershell-3.0, try-finally | <h1>Powershell Finally block skipped with Ctrl-C</h1>
<p>I'm writing a monitoring script in Powershell using a Try/Finally to log a message should the script end. The script is intended to run indefinitely, so I want a way to track unintended exiting.</p>
<p>Every other StackOverflow post and <a href="https://msdn.mic... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,834 | bash | # Powershell Finally block skipped with Ctrl-C
I'm writing a monitoring script in Powershell using a Try/Finally to log a message should the script end. The script is intended to run indefinitely, so I want a way to track unintended exiting.
Every other StackOverflow post and [Help page](https://msdn.microsoft.com/po... | The proper answer is that `Ctrl`+`C` breaks pipeline, as is also stated in that link, and `echo` uses the pipeline to process its output. Therefore, once you `Ctrl`+`C`, writing to the pipeline causes the script block to err, and to not process any further commands. Therefore, do not use commands that send output to st... |
44779000 | Powershell Connection to Oracle Database | 9 | 2017-06-27 11:20:46 | <p>I'm having trouble connecting to an Oracle database from Powershell using the <code>Oracle.ManagedDataAccess.dll</code>.</p>
<p>I followed <a href="https://blogs.technet.microsoft.com/heyscriptingguy/2012/12/04/use-oracle-odp-net-and-powershell-to-simplify-data-access/" rel="noreferrer">this</a> tutorial on Technet... | 81,381 | 6,485,881 | 2024-05-09 11:13:14 | 44,804,696 | 12 | 2017-06-28 14:00:43 | 6,485,881 | 2017-06-28 14:00:43 | https://stackoverflow.com/q/44779000 | https://stackoverflow.com/a/44804696 | <p><em>Im not sure if this is technically a solution - I'd classify it more as a workaround, but it worked for me.</em></p>
<hr>
<p>After doing some more research I found a suitable alternative to the <code>Oracle.ManagedDataAccess.dll</code>. I found the <a href="https://msdn.microsoft.com/en-US/library/system.data.... | <p><em>Im not sure if this is technically a solution - I'd classify it more as a workaround, but it worked for me.</em></p> <hr> <p>After doing some more research I found a suitable alternative to the <code>Oracle.ManagedDataAccess.dll</code>. I found the <a href="https://msdn.microsoft.com/en-US/library/system.data.... | 526, 165558 | oracle-database, powershell | <h1>Powershell Connection to Oracle Database</h1>
<p>I'm having trouble connecting to an Oracle database from Powershell using the <code>Oracle.ManagedDataAccess.dll</code>.</p>
<p>I followed <a href="https://blogs.technet.microsoft.com/heyscriptingguy/2012/12/04/use-oracle-odp-net-and-powershell-to-simplify-data-acce... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,835 | bash | # Powershell Connection to Oracle Database
I'm having trouble connecting to an Oracle database from Powershell using the `Oracle.ManagedDataAccess.dll`.
I followed [this](https://blogs.technet.microsoft.com/heyscriptingguy/2012/12/04/use-oracle-odp-net-and-powershell-to-simplify-data-access/) tutorial on Technet and ... | *Im not sure if this is technically a solution - I'd classify it more as a workaround, but it worked for me.*
---
After doing some more research I found a suitable alternative to the `Oracle.ManagedDataAccess.dll`. I found the [System.Data.OracleClient](https://msdn.microsoft.com/en-US/library/system.data.oracleclien... |
44207548 | How to filter files in llvm-cov code coverage report? | 9 | 2017-05-26 17:54:06 | <p>From the <a href="http://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-show" rel="noreferrer">llvm-cov docs</a>:</p>
<blockquote>
<p><code>
llvm-cov show [options] -instr-profile PROFILE BIN [-object BIN,...] [[-object BIN]] [SOURCES]
</code></p>
<p>The llvm-cov show command shows line by line covera... | 8,622 | 438,063 | 2022-11-24 03:32:38 | 44,657,938 | 12 | 2017-06-20 16:03:06 | 265,521 | 2017-06-21 10:15:14 | https://stackoverflow.com/q/44207548 | https://stackoverflow.com/a/44657938 | <p>It's badly worded but <code>SOURCES</code> is actually a list of file names, not the name of a file containing a list of filenames.</p>
<p>They need to be the paths to the actual source files on disk. It doesn't support wildcards or regex unfortunately.</p>
<p>Edit: By reading the source I have discovered that you... | <p>It's badly worded but <code>SOURCES</code> is actually a list of file names, not the name of a file containing a list of filenames.</p> <p>They need to be the paths to the actual source files on disk. It doesn't support wildcards or regex unfortunately.</p> <p>Edit: By reading the source I have discovered that you... | 387, 908, 3315, 112928 | bash, code-coverage, llvm-cov, xcode | <h1>How to filter files in llvm-cov code coverage report?</h1>
<p>From the <a href="http://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-show" rel="noreferrer">llvm-cov docs</a>:</p>
<blockquote>
<p><code>
llvm-cov show [options] -instr-profile PROFILE BIN [-object BIN,...] [[-object BIN]] [SOURCES]
</code><... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,836 | bash | # How to filter files in llvm-cov code coverage report?
From the [llvm-cov docs](http://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-show):
> `llvm-cov show [options] -instr-profile PROFILE BIN [-object BIN,...] [[-object BIN]] [SOURCES]`
>
> The llvm-cov show command shows line by line coverage of the binaries
... | It's badly worded but `SOURCES` is actually a list of file names, not the name of a file containing a list of filenames.
They need to be the paths to the actual source files on disk. It doesn't support wildcards or regex unfortunately.
Edit: By reading the source I have discovered that you can also list directories a... |
43129163 | Powershell - Invoke-WebRequest to a URL with literal '/' (%2F) in it | 9 | 2017-03-30 22:05:25 | <p>I have been trying to access a URL with a <code>/</code> character in it from powershell, using the following command (it's a query to a gitlab server to retrieve a project called <code>"foo/bar"</code>): </p>
<pre><code>Invoke-WebRequest https://server.com/api/v3/projects/foo%2Fbar -Verbose
</code></pre>
<p>Now,... | 11,738 | 1,731,397 | 2019-07-09 22:05:56 | 43,135,803 | 12 | 2017-03-31 08:17:22 | 7,715,547 | 2017-03-31 08:17:22 | https://stackoverflow.com/q/43129163 | https://stackoverflow.com/a/43135803 | <p>Try the URL through this function</p>
<pre><code>function fixuri($uri){
$UnEscapeDotsAndSlashes = 0x2000000;
$SimpleUserSyntax = 0x20000;
$type = $uri.GetType();
$fieldInfo = $type.GetField("m_Syntax", ([System.Reflection.BindingFlags]::Instance -bor [System.Reflection.BindingFlags]::NonPublic));
$uriPa... | <p>Try the URL through this function</p> <pre><code>function fixuri($uri){ $UnEscapeDotsAndSlashes = 0x2000000; $SimpleUserSyntax = 0x20000; $type = $uri.GetType(); $fieldInfo = $type.GetField("m_Syntax", ([System.Reflection.BindingFlags]::Instance -bor [System.Reflection.BindingFlags]::NonPublic)); $uriPa... | 365, 526, 6443, 8023 | powershell, url, urlencode, webrequest | <h1>Powershell - Invoke-WebRequest to a URL with literal '/' (%2F) in it</h1>
<p>I have been trying to access a URL with a <code>/</code> character in it from powershell, using the following command (it's a query to a gitlab server to retrieve a project called <code>"foo/bar"</code>): </p>
<pre><code>Invoke-WebReques... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,837 | bash | # Powershell - Invoke-WebRequest to a URL with literal '/' (%2F) in it
I have been trying to access a URL with a `/` character in it from powershell, using the following command (it's a query to a gitlab server to retrieve a project called `"foo/bar"`):
```
Invoke-WebRequest https://server.com/api/v3/projects/foo%2Fb... | Try the URL through this function
```
function fixuri($uri){
$UnEscapeDotsAndSlashes = 0x2000000;
$SimpleUserSyntax = 0x20000;
$type = $uri.GetType();
$fieldInfo = $type.GetField("m_Syntax", ([System.Reflection.BindingFlags]::Instance -bor [System.Reflection.BindingFlags]::NonPublic));
$uriParser = $fieldI... |
42257450 | How does Docker run a command without invoking a command shell? | 9 | 2017-02-15 18:34:07 | <p>I'm learning about Docker at the moment, and going through the <a href="https://docs.docker.com/engine/reference/builder/" rel="noreferrer">Dockerfile reference</a>, specifically the <a href="https://docs.docker.com/engine/reference/builder/#/run" rel="noreferrer"><strong><code>RUN</code></strong></a> instruction. T... | 5,492 | 2,317,532 | 2019-05-18 16:47:31 | 42,257,653 | 12 | 2017-02-15 18:44:40 | 1,220,089 | 2019-05-18 16:47:31 | https://stackoverflow.com/q/42257450 | https://stackoverflow.com/a/42257653 | <p>If I understand your question correctly, you're asking how something can be run (specifically in the context of docker) without invoking a command shell.</p>
<p>The way things are run in the linux kernel are usually using <a href="https://linux.die.net/man/3/exec" rel="noreferrer">the <code>exec</code> family of sy... | <p>If I understand your question correctly, you're asking how something can be run (specifically in the context of docker) without invoking a command shell.</p> <p>The way things are run in the linux kernel are usually using <a href="https://linux.die.net/man/3/exec" rel="noreferrer">the <code>exec</code> family of sy... | 390, 90304, 108477 | docker, dockerfile, shell | <h1>How does Docker run a command without invoking a command shell?</h1>
<p>I'm learning about Docker at the moment, and going through the <a href="https://docs.docker.com/engine/reference/builder/" rel="noreferrer">Dockerfile reference</a>, specifically the <a href="https://docs.docker.com/engine/reference/builder/#/r... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,838 | bash | # How does Docker run a command without invoking a command shell?
I'm learning about Docker at the moment, and going through the [Dockerfile reference](https://docs.docker.com/engine/reference/builder/), specifically the [**`RUN`**](https://docs.docker.com/engine/reference/builder/#/run) instruction. There are two for... | If I understand your question correctly, you're asking how something can be run (specifically in the context of docker) without invoking a command shell.
The way things are run in the linux kernel are usually using [the `exec` family of system calls.](https://linux.die.net/man/3/exec)
You pass it the path to the exec... |
42108296 | How to supply argument to value of New-Alias command? | 9 | 2017-02-08 08:39:28 | <p>I wish <code>Get-ChildItem -force</code> to get executed when I type <code>ll</code> and I have this in my <code>profile.ps1</code>:</p>
<pre><code>New-Alias -Name ll -Value Get-ChildItem -force
</code></pre>
<p>However, when I type <code>ll</code>, I can see that the <code>-force</code> argument is not being used... | 3,732 | 2,448,495 | 2023-06-02 04:44:54 | 42,108,380 | 12 | 2017-02-08 08:44:50 | 73,070 | 2017-02-08 08:50:10 | https://stackoverflow.com/q/42108296 | https://stackoverflow.com/a/42108380 | <p>You cannot do that with aliases. Aliases are really just different names for commands, they cannot include arguments.</p>
<p>What you <em>can</em> do, however, is, write a function instead of using an alias:</p>
<pre><code>function ll {
Get-ChildItem -Force @args
}
</code></pre>
<p>You won't get tab completion ... | <p>You cannot do that with aliases. Aliases are really just different names for commands, they cannot include arguments.</p> <p>What you <em>can</em> do, however, is, write a function instead of using an alias:</p> <pre><code>function ll { Get-ChildItem -Force @args } </code></pre> <p>You won't get tab completion ... | 526 | powershell | <h1>How to supply argument to value of New-Alias command?</h1>
<p>I wish <code>Get-ChildItem -force</code> to get executed when I type <code>ll</code> and I have this in my <code>profile.ps1</code>:</p>
<pre><code>New-Alias -Name ll -Value Get-ChildItem -force
</code></pre>
<p>However, when I type <code>ll</code>, I ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,839 | bash | # How to supply argument to value of New-Alias command?
I wish `Get-ChildItem -force` to get executed when I type `ll` and I have this in my `profile.ps1`:
```
New-Alias -Name ll -Value Get-ChildItem -force
```
However, when I type `ll`, I can see that the `-force` argument is not being used. What am I doing wrong?
... | You cannot do that with aliases. Aliases are really just different names for commands, they cannot include arguments.
What you *can* do, however, is, write a function instead of using an alias:
```
function ll {
Get-ChildItem -Force @args
}
```
You won't get tab completion for arguments in that case, though, as th... |
41307313 | Custom git command autocompletion | 9 | 2016-12-23 20:09:24 | <p>I have implemented a custom git command by writing a shell script located in <code>/usr/local/bin</code>. It works fine, but I would like the script to autocomplete branches in the command line, just like <code>git checkout [TAB][TAB]</code>. How could this be done?</p>
<p>EDIT:
Just adding some context: git allows... | 2,600 | 4,802,825 | 2021-01-18 20:43:53 | 41,307,951 | 12 | 2016-12-23 21:16:48 | 4,802,825 | 2016-12-23 21:16:48 | https://stackoverflow.com/q/41307313 | https://stackoverflow.com/a/41307951 | <p>Figured it out. I needed to download git bash completion (<a href="https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash" rel="noreferrer">here</a>), create a new file in <code>/etc/bash_completion.d</code> with the following contents:</p>
<pre><code>source ~/.git-completion.bash
_... | <p>Figured it out. I needed to download git bash completion (<a href="https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash" rel="noreferrer">here</a>), create a new file in <code>/etc/bash_completion.d</code> with the following contents:</p> <pre><code>source ~/.git-completion.bash _... | 58, 119, 390 | git, linux, shell | <h1>Custom git command autocompletion</h1>
<p>I have implemented a custom git command by writing a shell script located in <code>/usr/local/bin</code>. It works fine, but I would like the script to autocomplete branches in the command line, just like <code>git checkout [TAB][TAB]</code>. How could this be done?</p>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,840 | bash | # Custom git command autocompletion
I have implemented a custom git command by writing a shell script located in `/usr/local/bin`. It works fine, but I would like the script to autocomplete branches in the command line, just like `git checkout [TAB][TAB]`. How could this be done?
EDIT:
Just adding some context: git a... | Figured it out. I needed to download git bash completion ([here](https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash)), create a new file in `/etc/bash_completion.d` with the following contents:
```
source ~/.git-completion.bash
_git_install ()
{
__gitcomp_nl "$(__git_refs)"
}
```... |
41151579 | Why is this Bash function within a git alias executing twice, and why does adding `exit` fix it? | 9 | 2016-12-14 20:27:13 | <p>If I fail to explicitly call <a href="http://pubs.opengroup.org/onlinepubs/009695399/utilities/exit.html" rel="nofollow noreferrer"><code>exit</code></a> for certain function-based Bash scripts then there are additional unexpected executions for some functions. What is causing this? The behavior was first noticed wh... | 836 | 2,446,574 | 2019-08-05 17:00:52 | 41,305,925 | 12 | 2016-12-23 18:01:57 | 1,815,797 | 2016-12-23 18:01:57 | https://stackoverflow.com/q/41151579 | https://stackoverflow.com/a/41305925 | <p>That's because of the way <code>git</code> handles aliases:</p>
<p>Given an alias</p>
<pre>
[alias]
myalias = !<em>string</em>
</pre>
<p>where <code><em>string</em></code> is any string that represents some code, when calling <code>git myalias <em>args</em></code> where <code><em>args</em></code> is a (possib... | <p>That's because of the way <code>git</code> handles aliases:</p> <p>Given an alias</p> <pre> [alias] myalias = !<em>string</em> </pre> <p>where <code><em>string</em></code> is any string that represents some code, when calling <code>git myalias <em>args</em></code> where <code><em>args</em></code> is a (possib... | 119, 387, 390, 1448, 10871 | alias, bash, exit, git, shell | <h1>Why is this Bash function within a git alias executing twice, and why does adding `exit` fix it?</h1>
<p>If I fail to explicitly call <a href="http://pubs.opengroup.org/onlinepubs/009695399/utilities/exit.html" rel="nofollow noreferrer"><code>exit</code></a> for certain function-based Bash scripts then there are ad... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,841 | bash | # Why is this Bash function within a git alias executing twice, and why does adding `exit` fix it?
If I fail to explicitly call [`exit`](http://pubs.opengroup.org/onlinepubs/009695399/utilities/exit.html) for certain function-based Bash scripts then there are additional unexpected executions for some functions. What i... | That's because of the way `git` handles aliases:
Given an alias
```
[alias]
myalias = !string
```
where `string` is any string that represents some code, when calling `git myalias args` where `args` is a (possibly empty) list of arguments, `git` will execute:
```
sh -c 'string "$@"' 'string' args
```
For e... |
39445968 | BASH - getting UID on shell script does not work | 9 | 2016-09-12 08:16:06 | <p>Hi I have a question about bash.</p>
<p>and I'm new to it.</p>
<p>I made a file named "test.sh" and its contents is</p>
<pre><code>#!/bin/bash
set -x
echo $UID
echo "$UID"
echo "$(id -u)"
</code></pre>
<p>and the result is blank!!
nothing shows up</p>
<p>However, when i just type "echo $UID" on terminal
it show... | 23,623 | 4,247,432 | 2016-09-28 16:10:13 | 39,446,268 | 12 | 2016-09-12 08:34:52 | 1,344,961 | 2016-09-28 16:10:13 | https://stackoverflow.com/q/39445968 | https://stackoverflow.com/a/39446268 | <p><code>$UID</code> is a Bash variable that is not set under <code>sh</code>, that may be why it outputs blank lines.</p>
<p>Try <code>bash test.sh</code> or make your script executable with <code>chmod u+x test.sh</code>, the program defined in shebang will then be used (<code>/bin/bash</code>)</p>
| <p><code>$UID</code> is a Bash variable that is not set under <code>sh</code>, that may be why it outputs blank lines.</p> <p>Try <code>bash test.sh</code> or make your script executable with <code>chmod u+x test.sh</code>, the program defined in shebang will then be used (<code>/bin/bash</code>)</p> | 387, 390 | bash, shell | <h1>BASH - getting UID on shell script does not work</h1>
<p>Hi I have a question about bash.</p>
<p>and I'm new to it.</p>
<p>I made a file named "test.sh" and its contents is</p>
<pre><code>#!/bin/bash
set -x
echo $UID
echo "$UID"
echo "$(id -u)"
</code></pre>
<p>and the result is blank!!
nothing shows up</p>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,842 | bash | # BASH - getting UID on shell script does not work
Hi I have a question about bash.
and I'm new to it.
I made a file named "test.sh" and its contents is
```
#!/bin/bash
set -x
echo $UID
echo "$UID"
echo "$(id -u)"
```
and the result is blank!!
nothing shows up
However, when i just type "echo $UID" on terminal
it ... | `$UID` is a Bash variable that is not set under `sh`, that may be why it outputs blank lines.
Try `bash test.sh` or make your script executable with `chmod u+x test.sh`, the program defined in shebang will then be used (`/bin/bash`) |
38307078 | Linux - Shell script run curl command in parallel | 9 | 2016-07-11 12:34:58 | <p>I would like to create linux shell script to run CURL command in parallel </p>
<p>For example: I have three command like </p>
<ol>
<li>curl -s <a href="http://localhost/process.php?id=1" rel="noreferrer">http://localhost/process.php?id=1</a></li>
<li>curl -s <a href="http://localhost/process.php?id=2" rel="norefer... | 15,502 | 4,773,217 | 2016-07-11 12:39:22 | 38,307,180 | 12 | 2016-07-11 12:39:22 | 6,329,633 | 2016-07-11 12:39:22 | https://stackoverflow.com/q/38307078 | https://stackoverflow.com/a/38307180 | <p>I think a bash script like:</p>
<pre><code>#!/bin/bash
curl -s http://localhost/process.php?id=1 &
curl -s http://localhost/process.php?id=2 &
curl -s http://localhost/process.php?id=3 &
</code></pre>
<p>However, this is starting all tasks as background processes.
Don't know how crucial simultaneous s... | <p>I think a bash script like:</p> <pre><code>#!/bin/bash curl -s http://localhost/process.php?id=1 & curl -s http://localhost/process.php?id=2 & curl -s http://localhost/process.php?id=3 & </code></pre> <p>However, this is starting all tasks as background processes. Don't know how crucial simultaneous s... | 58, 390 | linux, shell | <h1>Linux - Shell script run curl command in parallel</h1>
<p>I would like to create linux shell script to run CURL command in parallel </p>
<p>For example: I have three command like </p>
<ol>
<li>curl -s <a href="http://localhost/process.php?id=1" rel="noreferrer">http://localhost/process.php?id=1</a></li>
<li>curl ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,843 | bash | # Linux - Shell script run curl command in parallel
I would like to create linux shell script to run CURL command in parallel
For example: I have three command like
1. curl -s <http://localhost/process.php?id=1>
2. curl -s <http://localhost/process.php?id=2>
3. curl -s <http://localhost/process.php?id=3>
I want to ... | I think a bash script like:
```
#!/bin/bash
curl -s http://localhost/process.php?id=1 &
curl -s http://localhost/process.php?id=2 &
curl -s http://localhost/process.php?id=3 &
```
However, this is starting all tasks as background processes.
Don't know how crucial simultaneous starting of the process is. |
37474439 | Run PHP Artisan Without Change Directory | 9 | 2016-05-27 03:38:39 | <p>How to run command php artisan serve without change to the proect directory?</p>
<p>I try to run this command but nothing happen</p>
<pre><code>php /home/john/Documents/project/ artisan serve --port=1111
</code></pre>
<p>I want to insert this command to alisases at bash aliases so i don't need to insert the port ... | 4,013 | 4,860,664 | 2016-05-27 03:41:41 | 37,474,462 | 12 | 2016-05-27 03:41:41 | 1,227,923 | 2016-05-27 03:41:41 | https://stackoverflow.com/q/37474439 | https://stackoverflow.com/a/37474462 | <p>Try to remove space:</p>
<pre><code>php /home/john/Documents/project/artisan serve --port=1111
</code></pre>
| <p>Try to remove space:</p> <pre><code>php /home/john/Documents/project/artisan serve --port=1111 </code></pre> | 5, 387, 75151, 138708 | bash, laravel, laravel-artisan, php | <h1>Run PHP Artisan Without Change Directory</h1>
<p>How to run command php artisan serve without change to the proect directory?</p>
<p>I try to run this command but nothing happen</p>
<pre><code>php /home/john/Documents/project/ artisan serve --port=1111
</code></pre>
<p>I want to insert this command to alisases a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,844 | bash | # Run PHP Artisan Without Change Directory
How to run command php artisan serve without change to the proect directory?
I try to run this command but nothing happen
```
php /home/john/Documents/project/ artisan serve --port=1111
```
I want to insert this command to alisases at bash aliases so i don't need to insert... | Try to remove space:
```
php /home/john/Documents/project/artisan serve --port=1111
``` |
34427146 | What's the point of eval/bash -c as opposed to just evaluating a variable? | 9 | 2015-12-23 01:22:24 | <p>Suppose you have the following command stored in a variable:</p>
<pre><code>COMMAND='echo hello'
</code></pre>
<p>What's the difference between</p>
<pre><code>$ eval "$COMMAND"
hello
$ bash -c "$COMMAND"
hello
$ $COMMAND
hello
</code></pre>
<p>? Why is the last version almost never used if it is shorter and (a... | 1,008 | 4,077,294 | 2016-10-04 14:50:04 | 34,427,499 | 12 | 2015-12-23 02:06:56 | 14,122 | 2016-10-04 14:50:04 | https://stackoverflow.com/q/34427146 | https://stackoverflow.com/a/34427499 | <p>The third form is not at all like the other two -- but to understand why, we need to go into the order of operations when bash in interpreting a command, and look at which of those are followed when each method is in use.</p>
<h1>Bash Parsing Stages</h1>
<ol>
<li>Quote Processing</li>
<li>Splitting Into Commands</... | <p>The third form is not at all like the other two -- but to understand why, we need to go into the order of operations when bash in interpreting a command, and look at which of those are followed when each method is in use.</p> <h1>Bash Parsing Stages</h1> <ol> <li>Quote Processing</li> <li>Splitting Into Commands</... | 34, 58, 387, 390, 10327 | bash, linux, sh, shell, unix | <h1>What's the point of eval/bash -c as opposed to just evaluating a variable?</h1>
<p>Suppose you have the following command stored in a variable:</p>
<pre><code>COMMAND='echo hello'
</code></pre>
<p>What's the difference between</p>
<pre><code>$ eval "$COMMAND"
hello
$ bash -c "$COMMAND"
hello
$ $COMMAND
hello
<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,845 | bash | # What's the point of eval/bash -c as opposed to just evaluating a variable?
Suppose you have the following command stored in a variable:
```
COMMAND='echo hello'
```
What's the difference between
```
$ eval "$COMMAND"
hello
$ bash -c "$COMMAND"
hello
$ $COMMAND
hello
```
? Why is the last version almost never u... | The third form is not at all like the other two -- but to understand why, we need to go into the order of operations when bash in interpreting a command, and look at which of those are followed when each method is in use.
# Bash Parsing Stages
1. Quote Processing
2. Splitting Into Commands
3. Special Operator Parsing... |
34188411 | how to debug fish script? | 9 | 2015-12-09 20:31:32 | <p>You can <a href="https://stackoverflow.com/a/951352/802365">debug a bash script</a> like this:</p>
<pre><code>bash -x script [arg1 ...]`
</code></pre>
<h3>Question</h3>
<p>What is the <strong><code>fish</code> equivalent?</strong></p>
| 4,600 | 802,365 | 2021-05-27 11:53:36 | 34,188,509 | 12 | 2015-12-09 20:37:40 | 802,365 | 2015-12-09 22:47:58 | https://stackoverflow.com/q/34188411 | https://stackoverflow.com/a/34188509 | <p>Fish use a similar flag system:</p>
<pre><code>fish -d 3 script.fish
</code></pre>
<p>Where <a href="http://fishshell.com/docs/2.2/commands.html#fish-description" rel="noreferrer"><code>d</code> is the debug flag followed by the verbosity level</a>:</p>
<blockquote>
<p>-d or --debug-level=DEBUG_LEVEL specify the ver... | <p>Fish use a similar flag system:</p> <pre><code>fish -d 3 script.fish </code></pre> <p>Where <a href="http://fishshell.com/docs/2.2/commands.html#fish-description" rel="noreferrer"><code>d</code> is the debug flag followed by the verbosity level</a>:</p> <blockquote> <p>-d or --debug-level=DEBUG_LEVEL specify the ver... | 277, 390, 531, 55824 | debugging, fish, scripting, shell | <h1>how to debug fish script?</h1>
<p>You can <a href="https://stackoverflow.com/a/951352/802365">debug a bash script</a> like this:</p>
<pre><code>bash -x script [arg1 ...]`
</code></pre>
<h3>Question</h3>
<p>What is the <strong><code>fish</code> equivalent?</strong></p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,846 | bash | # how to debug fish script?
You can [debug a bash script](https://stackoverflow.com/a/951352/802365) like this:
```
bash -x script [arg1 ...]`
```
### Question
What is the **`fish` equivalent?** | Fish use a similar flag system:
```
fish -d 3 script.fish
```
Where [`d` is the debug flag followed by the verbosity level](http://fishshell.com/docs/2.2/commands.html#fish-description):
> -d or --debug-level=DEBUG_LEVEL specify the verbosity level of fish. A higher number means higher verbosity. The default level i... |
33526823 | Powershell curl double quotes | 9 | 2015-11-04 16:18:36 | <p>I am trying to invoke a curl command in powershell and pass some JSON information. </p>
<p>Here is my command:</p>
<pre><code>curl -X POST -u username:password -H "Content-Type: application/json" -d "{ "fields": { "project": { "key": "key" }, "summary": "summary", "description": "description - here", "type": { "na... | 5,493 | 5,100,278 | 2023-10-13 07:11:07 | 33,527,459 | 12 | 2015-11-04 16:49:48 | 18,771 | 2015-11-04 16:49:48 | https://stackoverflow.com/q/33526823 | https://stackoverflow.com/a/33527459 | <p>Pipe the data into curl.exe, instead of trying to escape it.</p>
<pre><code>$data = @{
fields = @{
project = @{
key = "key"
}
summary = "summary"
description = "description - here"
type = @{
name = "Task"
}
}
}
$data | ConvertTo-Json -... | <p>Pipe the data into curl.exe, instead of trying to escape it.</p> <pre><code>$data = @{ fields = @{ project = @{ key = "key" } summary = "summary" description = "description - here" type = @{ name = "Task" } } } $data | ConvertTo-Json -... | 526, 1508, 1554, 4804, 12658 | character-encoding, curl, escaping, json, powershell | <h1>Powershell curl double quotes</h1>
<p>I am trying to invoke a curl command in powershell and pass some JSON information. </p>
<p>Here is my command:</p>
<pre><code>curl -X POST -u username:password -H "Content-Type: application/json" -d "{ "fields": { "project": { "key": "key" }, "summary": "summary", "descriptio... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,847 | bash | # Powershell curl double quotes
I am trying to invoke a curl command in powershell and pass some JSON information.
Here is my command:
```
curl -X POST -u username:password -H "Content-Type: application/json" -d "{ "fields": { "project": { "key": "key" }, "summary": "summary", "description": "description - here", "t... | Pipe the data into curl.exe, instead of trying to escape it.
```
$data = @{
fields = @{
project = @{
key = "key"
}
summary = "summary"
description = "description - here"
type = @{
name = "Task"
}
}
}
$data | ConvertTo-Json -Compress | cur... |
33291631 | Is there a simple way to get rid of junk values that come when you SSH using Python's Paramiko library and fetch output from CLI of a remote machine? | 9 | 2015-10-22 22:09:58 | <p>I am using Python's Paramiko library to SSH a remote machine and fetch some output from command-line. I see a lot of junk printing along with the actual output. How to get rid of this?</p>
<pre><code>chan1.send("ls\n")
output = chan1.recv(1024).decode("utf-8")
print(output)
[u'Last login: Wed Oct... | 6,070 | 5,066,525 | 2023-08-03 05:41:49 | 33,296,127 | 12 | 2015-10-23 06:31:07 | 850,848 | 2023-08-03 05:41:49 | https://stackoverflow.com/q/33291631 | https://stackoverflow.com/a/33296127 | <p>It's not a junk. These are <a href="https://en.wikipedia.org/wiki/ANSI_escape_code" rel="nofollow noreferrer">ANSI escape codes</a> that are normally interpreted by a terminal client to pretty print the output.</p>
<p>If the server is correctly configured, you get these only, when you use an interactive terminal, in... | <p>It's not a junk. These are <a href="https://en.wikipedia.org/wiki/ANSI_escape_code" rel="nofollow noreferrer">ANSI escape codes</a> that are normally interpreted by a terminal client to pretty print the output.</p> <p>If the server is correctly configured, you get these only, when you use an interactive terminal, in... | 16, 386, 390, 14323, 18589 | ansi-escape, paramiko, python, shell, ssh | <h1>Is there a simple way to get rid of junk values that come when you SSH using Python's Paramiko library and fetch output from CLI of a remote machine?</h1>
<p>I am using Python's Paramiko library to SSH a remote machine and fetch some output from command-line. I see a lot of junk printing along with the actual outpu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,848 | bash | # Is there a simple way to get rid of junk values that come when you SSH using Python's Paramiko library and fetch output from CLI of a remote machine?
I am using Python's Paramiko library to SSH a remote machine and fetch some output from command-line. I see a lot of junk printing along with the actual output. How to... | It's not a junk. These are [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) that are normally interpreted by a terminal client to pretty print the output.
If the server is correctly configured, you get these only, when you use an interactive terminal, in other words, if you requested a [pseudo termi... |
32922557 | Find files modified over 1 hour ago but less than 3 days | 9 | 2015-10-03 12:28:30 | <p>In linux, using bash, what's the easiest way to find files that were modified more than an hour ago but less than 3 days ago?</p>
<p>Surely, there's got to be an easy way to do this. I keep searching and can't find an easy solution.</p>
| 13,902 | 2,229,277 | 2024-06-04 12:51:29 | 32,922,585 | 12 | 2015-10-03 12:31:12 | 3,009,892 | 2024-06-04 12:51:29 | https://stackoverflow.com/q/32922557 | https://stackoverflow.com/a/32922585 | <p>Find has -mtime and -mmin:</p>
<pre><code>find . -mtime -3 -mmin +60
</code></pre>
<p>From the find manual:</p>
<blockquote>
<p>Numeric arguments can be specified as:</p>
<p>+n for greater than n</p>
<p>-n for less than n</p>
<p>n for exactly n</p>
</blockquote>
| <p>Find has -mtime and -mmin:</p> <pre><code>find . -mtime -3 -mmin +60 </code></pre> <p>From the find manual:</p> <blockquote> <p>Numeric arguments can be specified as:</p> <p>+n for greater than n</p> <p>-n for less than n</p> <p>n for exactly n</p> </blockquote> | 58, 387 | bash, linux | <h1>Find files modified over 1 hour ago but less than 3 days</h1>
<p>In linux, using bash, what's the easiest way to find files that were modified more than an hour ago but less than 3 days ago?</p>
<p>Surely, there's got to be an easy way to do this. I keep searching and can't find an easy solution.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,849 | bash | # Find files modified over 1 hour ago but less than 3 days
In linux, using bash, what's the easiest way to find files that were modified more than an hour ago but less than 3 days ago?
Surely, there's got to be an easy way to do this. I keep searching and can't find an easy solution. | Find has -mtime and -mmin:
```
find . -mtime -3 -mmin +60
```
From the find manual:
> Numeric arguments can be specified as:
>
> +n for greater than n
>
> -n for less than n
>
> n for exactly n |
31791324 | Bash: Looping over multiple input sources (nesting "while read" loops?) | 9 | 2015-08-03 15:35:16 | <p>I have a <code>query.sh</code> script which runs <code>dig</code> commands, performing a set of lookups from different DNS servers, which are currently given in a column in the single input file used (<code>sites.txt</code>).</p>
<p>My goal is to modify this script to use a different input file, <code>dns_servers.t... | 8,807 | 2,382,290 | 2015-08-04 16:36:37 | 31,791,521 | 12 | 2015-08-03 15:45:47 | 14,122 | 2015-08-03 21:24:02 | https://stackoverflow.com/q/31791324 | https://stackoverflow.com/a/31791521 | <p>Ignoring any additional column(s) in the <code>sites.txt</code> file, and iterating through the lines of <code>dns_servers.txt</code>, might look like the following:</p>
<pre><code>#!/bin/sh
while read -r site _ <&3; do
while read -r dns_server <&4; do
dig +short -4 "@$dns_server" "$site"; exit=... | <p>Ignoring any additional column(s) in the <code>sites.txt</code> file, and iterating through the lines of <code>dns_servers.txt</code>, might look like the following:</p> <pre><code>#!/bin/sh while read -r site _ <&3; do while read -r dns_server <&4; do dig +short -4 "@$dns_server" "$site"; exit=... | 387 | bash | <h1>Bash: Looping over multiple input sources (nesting "while read" loops?)</h1>
<p>I have a <code>query.sh</code> script which runs <code>dig</code> commands, performing a set of lookups from different DNS servers, which are currently given in a column in the single input file used (<code>sites.txt</code>).</p>
<p>My... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,850 | bash | # Bash: Looping over multiple input sources (nesting "while read" loops?)
I have a `query.sh` script which runs `dig` commands, performing a set of lookups from different DNS servers, which are currently given in a column in the single input file used (`sites.txt`).
My goal is to modify this script to use a different... | Ignoring any additional column(s) in the `sites.txt` file, and iterating through the lines of `dns_servers.txt`, might look like the following:
```
#!/bin/sh
while read -r site _ <&3; do
while read -r dns_server <&4; do
dig +short -4 "@$dns_server" "$site"; exit=$?
sleep 5
echo "Exit status: $exit"
don... |
31546680 | How to pipe grep output to paste input? | 9 | 2015-07-21 18:16:36 | <p>I basically want to take the line that is under the word "LOAD" in filename1, and make it the second column in a new file, where the first column comes from filename2. (This is being done inside a loop, but I think that's irrelevant.)</p>
<p>So if I have</p>
<pre><code>grep -A 1 LOAD filename1 >> temp
paste ... | 15,867 | 4,302,219 | 2021-05-15 02:19:59 | 31,546,711 | 12 | 2015-07-21 18:18:25 | 548,225 | 2015-07-21 18:18:25 | https://stackoverflow.com/q/31546680 | https://stackoverflow.com/a/31546711 | <p>You can use <strong>process substitution</strong> instead of using a temporary file:</p>
<pre><code>paste filename2 <(grep -A 1 LOAD filename1) >> filename3
</code></pre>
| <p>You can use <strong>process substitution</strong> instead of using a temporary file:</p> <pre><code>paste filename2 <(grep -A 1 LOAD filename1) >> filename3 </code></pre> | 387 | bash | <h1>How to pipe grep output to paste input?</h1>
<p>I basically want to take the line that is under the word "LOAD" in filename1, and make it the second column in a new file, where the first column comes from filename2. (This is being done inside a loop, but I think that's irrelevant.)</p>
<p>So if I have</p>
<pre><c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,851 | bash | # How to pipe grep output to paste input?
I basically want to take the line that is under the word "LOAD" in filename1, and make it the second column in a new file, where the first column comes from filename2. (This is being done inside a loop, but I think that's irrelevant.)
So if I have
```
grep -A 1 LOAD filename... | You can use **process substitution** instead of using a temporary file:
```
paste filename2 <(grep -A 1 LOAD filename1) >> filename3
``` |
29881948 | Start-AzureStorageBlobCopy vs AzCopy: which one takes lesser time | 9 | 2015-04-26 18:48:13 | <p>I need to move vhds from one subscription to other. I would like to know which one is better option for the same: <code>Start-AzureStorageBlobCopy</code> or <code>AzCopy</code>?</p>
<p>Which one takes lesser time ?</p>
| 13,627 | 4,657,053 | 2018-06-02 00:01:03 | 29,888,363 | 12 | 2015-04-27 06:09:11 | 188,096 | 2015-04-27 06:09:11 | https://stackoverflow.com/q/29881948 | https://stackoverflow.com/a/29888363 | <p>Both of them would take the same time as all they do is initiate <code>Async Server-Side Blob Copy</code>. They just tell the service to start copying blob from source to destination. The actual copy operation is performed by Azure Blob Storage Service. The time it would take to copy the blob would depend on a numbe... | <p>Both of them would take the same time as all they do is initiate <code>Async Server-Side Blob Copy</code>. They just tell the service to start copying blob from source to destination. The actual copy operation is performed by Azure Blob Storage Service. The time it would take to copy the blob would depend on a numbe... | 14158, 35808, 81879 | azure, azure-powershell, azure-storage | <h1>Start-AzureStorageBlobCopy vs AzCopy: which one takes lesser time</h1>
<p>I need to move vhds from one subscription to other. I would like to know which one is better option for the same: <code>Start-AzureStorageBlobCopy</code> or <code>AzCopy</code>?</p>
<p>Which one takes lesser time ?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,852 | bash | # Start-AzureStorageBlobCopy vs AzCopy: which one takes lesser time
I need to move vhds from one subscription to other. I would like to know which one is better option for the same: `Start-AzureStorageBlobCopy` or `AzCopy`?
Which one takes lesser time ? | Both of them would take the same time as all they do is initiate `Async Server-Side Blob Copy`. They just tell the service to start copying blob from source to destination. The actual copy operation is performed by Azure Blob Storage Service. The time it would take to copy the blob would depend on a number of factors i... |
28755179 | Select node by its text value in xmlstarlet | 9 | 2015-02-27 00:01:24 | <p>I am trying to extract the value of the 'Value' node, where the 'Key' node is 'state' within a bash shell:</p>
<pre><code><FrontendStatus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0" serializerVersion="1.1">
<script/>
<State>
<String>
...
...
</String>... | 12,811 | 4,612,473 | 2015-02-27 16:42:31 | 28,756,693 | 12 | 2015-02-27 02:49:06 | 290,085 | 2015-02-27 16:42:31 | https://stackoverflow.com/q/28755179 | https://stackoverflow.com/a/28756693 | <p>This XPath will select <code>Value</code> of a <code>State</code> based on its <code>Key</code> equalling <code>state</code>:</p>
<pre><code>/FrontendStatus/State/String[Key='state']/Value
</code></pre>
<p>Or, in xmlstarlet:</p>
<pre><code>$ xmlstarlet sel -t -m "/FrontendStatus/State/String[Key='state']" -v Valu... | <p>This XPath will select <code>Value</code> of a <code>State</code> based on its <code>Key</code> equalling <code>state</code>:</p> <pre><code>/FrontendStatus/State/String[Key='state']/Value </code></pre> <p>Or, in xmlstarlet:</p> <pre><code>$ xmlstarlet sel -t -m "/FrontendStatus/State/String[Key='state']" -v Valu... | 19, 387, 41818 | bash, xml, xmlstarlet | <h1>Select node by its text value in xmlstarlet</h1>
<p>I am trying to extract the value of the 'Value' node, where the 'Key' node is 'state' within a bash shell:</p>
<pre><code><FrontendStatus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0" serializerVersion="1.1">
<script/>
<State... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,853 | bash | # Select node by its text value in xmlstarlet
I am trying to extract the value of the 'Value' node, where the 'Key' node is 'state' within a bash shell:
```
<FrontendStatus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0" serializerVersion="1.1">
<script/>
<State>
<String>
...
...
</Stri... | This XPath will select `Value` of a `State` based on its `Key` equalling `state`:
```
/FrontendStatus/State/String[Key='state']/Value
```
Or, in xmlstarlet:
```
$ xmlstarlet sel -t -m "/FrontendStatus/State/String[Key='state']" -v Value <status.xml
```
Will return `WatchingLiveTV` as requested. |
28585171 | How to alter role from command line in postgresql? | 9 | 2015-02-18 13:44:55 | <p>I'm trying to build a setup script to automate the development environments creation, but I'm having trouble both trying to pipe or using the -c modifier for psql.</p>
<p>I've tried:</p>
<pre><code>sudo su postgres psql -c "ALTER ROLE postgres WITH password 'pass'"
</code></pre>
<p>and </p>
<pre><code>sudo su po... | 18,366 | 1,730,172 | 2020-01-24 22:34:02 | 28,585,705 | 12 | 2015-02-18 14:11:53 | 238,814 | 2015-02-18 14:11:53 | https://stackoverflow.com/q/28585171 | https://stackoverflow.com/a/28585705 | <p>What's wrong is the lack of <code>-c</code> or <code>--command</code> for <code>su</code> to indicate that the rest of the line is a command.</p>
<p>But <code>su</code> is not needed anyway, because there's already <code>sudo</code>. Do this instead:</p>
<pre><code>sudo -u postgres psql -c "ALTER ROLE postgres WIT... | <p>What's wrong is the lack of <code>-c</code> or <code>--command</code> for <code>su</code> to indicate that the rest of the line is a command.</p> <p>But <code>su</code> is not needed anyway, because there's already <code>sudo</code>. Do this instead:</p> <pre><code>sudo -u postgres psql -c "ALTER ROLE postgres WIT... | 256, 549, 10327 | postgresql, sh, ubuntu | <h1>How to alter role from command line in postgresql?</h1>
<p>I'm trying to build a setup script to automate the development environments creation, but I'm having trouble both trying to pipe or using the -c modifier for psql.</p>
<p>I've tried:</p>
<pre><code>sudo su postgres psql -c "ALTER ROLE postgres WITH passwo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,854 | bash | # How to alter role from command line in postgresql?
I'm trying to build a setup script to automate the development environments creation, but I'm having trouble both trying to pipe or using the -c modifier for psql.
I've tried:
```
sudo su postgres psql -c "ALTER ROLE postgres WITH password 'pass'"
```
and
```
su... | What's wrong is the lack of `-c` or `--command` for `su` to indicate that the rest of the line is a command.
But `su` is not needed anyway, because there's already `sudo`. Do this instead:
```
sudo -u postgres psql -c "ALTER ROLE postgres WITH password 'pass'"
``` |
27650740 | 'PowerShell' is not recognized as an internal or external command | 9 | 2014-12-25 21:09:17 | <p>I have just installed Chocolatey via PowerShell, I tried running PowerShell both as myself and as administrator, and if I try running choco or cinst I get the following error:</p>
<pre><code>PS C:\> choco /?
'PowerShell' is not recognized as an internal or external command,
operable program or batch file.
</code... | 32,721 | 486,512 | 2018-06-21 19:24:45 | 27,650,809 | 12 | 2014-12-25 21:20:35 | null | 2014-12-25 21:20:35 | https://stackoverflow.com/q/27650740 | https://stackoverflow.com/a/27650809 | <p>This can happen if a program is not on your PATH. Open a PowerShell prompt and
enter</p>
<pre class="lang-sh prettyprint-override"><code>[environment]::setEnvironmentVariable('PATH',
"$env:path;C:\Windows\System32\WindowsPowerShell\v1.0", 'm')
</code></pre>
<p>then restart PowerShell.</p>
| <p>This can happen if a program is not on your PATH. Open a PowerShell prompt and enter</p> <pre class="lang-sh prettyprint-override"><code>[environment]::setEnvironmentVariable('PATH', "$env:path;C:\Windows\System32\WindowsPowerShell\v1.0", 'm') </code></pre> <p>then restart PowerShell.</p> | 526, 80758 | chocolatey, powershell | <h1>'PowerShell' is not recognized as an internal or external command</h1>
<p>I have just installed Chocolatey via PowerShell, I tried running PowerShell both as myself and as administrator, and if I try running choco or cinst I get the following error:</p>
<pre><code>PS C:\> choco /?
'PowerShell' is not recognized... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,855 | bash | # 'PowerShell' is not recognized as an internal or external command
I have just installed Chocolatey via PowerShell, I tried running PowerShell both as myself and as administrator, and if I try running choco or cinst I get the following error:
```
PS C:\> choco /?
'PowerShell' is not recognized as an internal or exte... | This can happen if a program is not on your PATH. Open a PowerShell prompt and
enter
```
[environment]::setEnvironmentVariable('PATH',
"$env:path;C:\Windows\System32\WindowsPowerShell\v1.0", 'm')
```
then restart PowerShell. |
27028486 | How to execute system command in Erlang and get results using os:cmd/1? | 9 | 2014-11-19 22:45:43 | <p>When I try to execute following command that returns error or doesn't exit on Windows - I always get empty list instead of error returned as string so for example: </p>
<p>I get: </p>
<pre><code>[] = os:cmd("blah").
</code></pre>
<p>instead of something like </p>
<pre><code>"command not found" = os:cmd("blah").
... | 8,541 | 3,169,252 | 2020-04-28 16:28:11 | 27,047,529 | 12 | 2014-11-20 19:06:24 | 1,691,583 | 2014-11-20 19:06:24 | https://stackoverflow.com/q/27028486 | https://stackoverflow.com/a/27047529 | <p>I am not familiar with windows at all, but I'm sure, you should look <a href="https://github.com/erlang/otp/blob/maint/lib/kernel/src/os.erl#L188">this</a>. This is implementation <code>os:cmd/1</code> function.</p>
<p>There is problem with <code>os:cmd/1</code>. This function doesn't let you know, was command exe... | <p>I am not familiar with windows at all, but I'm sure, you should look <a href="https://github.com/erlang/otp/blob/maint/lib/kernel/src/os.erl#L188">this</a>. This is implementation <code>os:cmd/1</code> function.</p> <p>There is problem with <code>os:cmd/1</code>. This function doesn't let you know, was command exe... | 538, 51067 | erlang, erlang-shell | <h1>How to execute system command in Erlang and get results using os:cmd/1?</h1>
<p>When I try to execute following command that returns error or doesn't exit on Windows - I always get empty list instead of error returned as string so for example: </p>
<p>I get: </p>
<pre><code>[] = os:cmd("blah").
</code></pre>
<p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,856 | bash | # How to execute system command in Erlang and get results using os:cmd/1?
When I try to execute following command that returns error or doesn't exit on Windows - I always get empty list instead of error returned as string so for example:
I get:
```
[] = os:cmd("blah").
```
instead of something like
```
"command no... | I am not familiar with windows at all, but I'm sure, you should look [this](https://github.com/erlang/otp/blob/maint/lib/kernel/src/os.erl#L188). This is implementation `os:cmd/1` function.
There is problem with `os:cmd/1`. This function doesn't let you know, was command execution successful or not, so you only have t... |
25854447 | Powershell New-ScheduledTaskTrigger recurring task with -RepetitionInterval | 9 | 2014-09-15 18:26:13 | <p>I'm finding the errors related to ScheduledTask cmdles give extremely cryptic errors.
I want to schedule a test task to run every 1 minute and repeat forever.
Here's what I'm trying, but no success: </p>
<pre><code>cls
#$Action = New-ScheduledTaskAction -Execute "e:\Scripts\TestClusteredTask.cmd"
$DurationTimeSpan... | 30,571 | 160,245 | 2017-03-20 10:20:01 | 25,857,004 | 12 | 2014-09-15 21:14:19 | 3,829,407 | 2014-09-17 14:07:49 | https://stackoverflow.com/q/25854447 | https://stackoverflow.com/a/25857004 | <p>According to <a href="http://technet.microsoft.com/en-us/library/jj649821.aspx" rel="noreferrer">tech net</a> this is the dataset you are using</p>
<pre><code>Parameter Set: Daily
New-ScheduledTaskTrigger [-Daily] -At <DateTime> [-DaysInterval <Int32> ] [-RandomDelay <TimeSpan> ] [ <CommonParam... | <p>According to <a href="http://technet.microsoft.com/en-us/library/jj649821.aspx" rel="noreferrer">tech net</a> this is the dataset you are using</p> <pre><code>Parameter Set: Daily New-ScheduledTaskTrigger [-Daily] -At <DateTime> [-DaysInterval <Int32> ] [-RandomDelay <TimeSpan> ] [ <CommonParam... | 526, 9299, 10997 | eventtrigger, powershell, scheduled-tasks | <h1>Powershell New-ScheduledTaskTrigger recurring task with -RepetitionInterval</h1>
<p>I'm finding the errors related to ScheduledTask cmdles give extremely cryptic errors.
I want to schedule a test task to run every 1 minute and repeat forever.
Here's what I'm trying, but no success: </p>
<pre><code>cls
#$Action = ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,857 | bash | # Powershell New-ScheduledTaskTrigger recurring task with -RepetitionInterval
I'm finding the errors related to ScheduledTask cmdles give extremely cryptic errors.
I want to schedule a test task to run every 1 minute and repeat forever.
Here's what I'm trying, but no success:
```
cls
#$Action = New-ScheduledTaskActio... | According to [tech net](http://technet.microsoft.com/en-us/library/jj649821.aspx) this is the dataset you are using
```
Parameter Set: Daily
New-ScheduledTaskTrigger [-Daily] -At <DateTime> [-DaysInterval <Int32> ] [-RandomDelay <TimeSpan> ] [ <CommonParameters>]
```
In your examples you are specifying `-RepetitionIn... |
23418904 | Why does `ls | cat` != `ls`? | 9 | 2014-05-02 00:28:28 | <p>Why is there a difference in output between these two commands:</p>
<pre><code>ls | cat
</code></pre>
<hr>
<pre><code>ls
</code></pre>
<p>The first one seems to separate filenames with a newline.</p>
<p>This also applies to commands suc has <code>ls > outfile</code>, and similar things.</p>
<p>I'm on Mac OS... | 736 | 1,127,635 | 2014-05-02 05:02:44 | 23,419,004 | 12 | 2014-05-02 00:39:29 | 77,567 | 2014-05-02 05:02:44 | https://stackoverflow.com/q/23418904 | https://stackoverflow.com/a/23419004 | <p>The <code>ls</code> command checks the file type of its standard output. If it detects a “tty”, it emits multicolumn output. If it detects any other file type (like a disk file or a pipe), it emits single column output.</p>
<p>Tty is short for teletype. In the old days, you would use an actual teletype to intera... | <p>The <code>ls</code> command checks the file type of its standard output. If it detects a “tty”, it emits multicolumn output. If it detects any other file type (like a disk file or a pipe), it emits single column output.</p> <p>Tty is short for teletype. In the old days, you would use an actual teletype to intera... | 34, 387, 390 | bash, shell, unix | <h1>Why does `ls | cat` != `ls`?</h1>
<p>Why is there a difference in output between these two commands:</p>
<pre><code>ls | cat
</code></pre>
<hr>
<pre><code>ls
</code></pre>
<p>The first one seems to separate filenames with a newline.</p>
<p>This also applies to commands suc has <code>ls > outfile</code>, and... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,858 | bash | # Why does `ls | cat` != `ls`?
Why is there a difference in output between these two commands:
```
ls | cat
```
---
```
ls
```
The first one seems to separate filenames with a newline.
This also applies to commands suc has `ls > outfile`, and similar things.
I'm on Mac OSX, if that makes any difference. | The `ls` command checks the file type of its standard output. If it detects a “tty”, it emits multicolumn output. If it detects any other file type (like a disk file or a pipe), it emits single column output.
Tty is short for teletype. In the old days, you would use an actual teletype to interact with a Unix system. S... |
23119506 | Use Powershell to run Psexec command | 9 | 2014-04-16 20:28:28 | <p>First post so please don't hurt me. I've searched around but can't seem to find a way to do what I want. I've made a script that copies a folder I have to numerous computers at \$computer\c$. In these folders is a batch file that runs an .exe. What I want to do is have Powershell pull from the same computers.txt tha... | 90,873 | 3,542,845 | 2022-10-12 16:55:05 | 23,120,034 | 12 | 2014-04-16 21:00:52 | 3,245,749 | 2014-04-16 21:33:53 | https://stackoverflow.com/q/23119506 | https://stackoverflow.com/a/23120034 | <p>Ok, let's take it from the top then.</p>
<pre><code>$computers = gc "C:\scripts\computers.txt"
</code></pre>
<p>That loads the contents of the "computers.txt" file into the variable <code>$computers</code>. Simple enough, no issues there.</p>
<p>Next we have a ForEach loop. It splits up the contents of <code>$com... | <p>Ok, let's take it from the top then.</p> <pre><code>$computers = gc "C:\scripts\computers.txt" </code></pre> <p>That loads the contents of the "computers.txt" file into the variable <code>$computers</code>. Simple enough, no issues there.</p> <p>Next we have a ForEach loop. It splits up the contents of <code>$com... | 526, 7002, 16067 | batch-file, powershell, psexec | <h1>Use Powershell to run Psexec command</h1>
<p>First post so please don't hurt me. I've searched around but can't seem to find a way to do what I want. I've made a script that copies a folder I have to numerous computers at \$computer\c$. In these folders is a batch file that runs an .exe. What I want to do is have P... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,859 | bash | # Use Powershell to run Psexec command
First post so please don't hurt me. I've searched around but can't seem to find a way to do what I want. I've made a script that copies a folder I have to numerous computers at \$computer\c$. In these folders is a batch file that runs an .exe. What I want to do is have Powershell... | Ok, let's take it from the top then.
```
$computers = gc "C:\scripts\computers.txt"
```
That loads the contents of the "computers.txt" file into the variable `$computers`. Simple enough, no issues there.
Next we have a ForEach loop. It splits up the contents of `$computers` and processes each line (presumably the na... |
21002919 | Running a remote PowerShell script with a Git command in it results in NativeCommandError | 9 | 2014-01-08 17:50:04 | <p>I am getting an error while executing a remote PowerShell script. From my local machine I am running a PowerShell script that uses <code>Invoke-Command</code> to <code>cd</code> into a directory on a remote Amazon Windows Server instance, and a subsequent <code>Invoke-Command</code> to execute script that lives on t... | 11,229 | 3,174,479 | 2014-01-08 19:11:41 | 21,003,410 | 12 | 2014-01-08 18:13:49 | null | 2014-01-08 18:58:14 | https://stackoverflow.com/q/21002919 | https://stackoverflow.com/a/21003410 | <p>Anytime you're calling an external executable from PowerShell, I highly recommend using <code>Start-Process</code>. The <code>Start-Process</code> cmdlet handles command line arguments much better, as compared to calling the executables directly.</p>
<p><strong>Important</strong>: You must also be aware that if you... | <p>Anytime you're calling an external executable from PowerShell, I highly recommend using <code>Start-Process</code>. The <code>Start-Process</code> cmdlet handles command line arguments much better, as compared to calling the executables directly.</p> <p><strong>Important</strong>: You must also be aware that if you... | 64, 119, 526 | git, powershell, windows | <h1>Running a remote PowerShell script with a Git command in it results in NativeCommandError</h1>
<p>I am getting an error while executing a remote PowerShell script. From my local machine I am running a PowerShell script that uses <code>Invoke-Command</code> to <code>cd</code> into a directory on a remote Amazon Wind... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,860 | bash | # Running a remote PowerShell script with a Git command in it results in NativeCommandError
I am getting an error while executing a remote PowerShell script. From my local machine I am running a PowerShell script that uses `Invoke-Command` to `cd` into a directory on a remote Amazon Windows Server instance, and a subs... | Anytime you're calling an external executable from PowerShell, I highly recommend using `Start-Process`. The `Start-Process` cmdlet handles command line arguments much better, as compared to calling the executables directly.
**Important**: You must also be aware that if you run two separate `Invoke-Command` commands (... |
17076342 | bash: run a script with set -e (errexit) | 9 | 2013-06-12 22:17:37 | <p>Is there a way to run a bash script with <code>set -e</code>, i.e., as if <code>set -e</code> were in the first line of the script? I know there is for example <code>bash -x</code> to emulate <code>set -x</code>, but I didn't see anything to emulate <code>set -e</code>.</p>
| 10,272 | 161,801 | 2013-06-12 22:22:03 | 17,076,387 | 12 | 2013-06-12 22:22:03 | 1,126,841 | 2013-06-12 22:22:03 | https://stackoverflow.com/q/17076342 | https://stackoverflow.com/a/17076387 | <p><code>bash</code> can use any of the options that are valid with <code>set</code> as a command line option, so you can simply use</p>
<pre><code>bash -e myScript
</code></pre>
<p>Here's the first sentence from the Options section of the man page (emphasis mine; I know I glossed over this sentence for a long time a... | <p><code>bash</code> can use any of the options that are valid with <code>set</code> as a command line option, so you can simply use</p> <pre><code>bash -e myScript </code></pre> <p>Here's the first sentence from the Options section of the man page (emphasis mine; I know I glossed over this sentence for a long time a... | 387 | bash | <h1>bash: run a script with set -e (errexit)</h1>
<p>Is there a way to run a bash script with <code>set -e</code>, i.e., as if <code>set -e</code> were in the first line of the script? I know there is for example <code>bash -x</code> to emulate <code>set -x</code>, but I didn't see anything to emulate <code>set -e</cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,861 | bash | # bash: run a script with set -e (errexit)
Is there a way to run a bash script with `set -e`, i.e., as if `set -e` were in the first line of the script? I know there is for example `bash -x` to emulate `set -x`, but I didn't see anything to emulate `set -e`. | `bash` can use any of the options that are valid with `set` as a command line option, so you can simply use
```
bash -e myScript
```
Here's the first sentence from the Options section of the man page (emphasis mine; I know I glossed over this sentence for a long time as well):
> In addition to the single-character s... |
16120155 | Bad array subscript | 9 | 2013-04-20 12:06:49 | <p>I'm relatively new to Shell and I've been trying to use arrays in Shell and it's not working well. I'm trying to write a script to suspend OpenVZ containers should they hit a certain bandwidth threshold over a period of time.</p>
<p>My script:</p>
<pre><code>#!/bin/bash
#Thresholds are in bytes per second and coun... | 60,782 | 1,429,555 | 2013-04-20 12:28:58 | 16,120,366 | 12 | 2013-04-20 12:28:58 | 418,413 | 2013-04-20 12:28:58 | https://stackoverflow.com/q/16120155 | https://stackoverflow.com/a/16120366 | <p>So on line 38,</p>
<pre><code>if (( times[$i] > times[$i - 1] + $SECS + 10 ))
</code></pre>
<p>would refer to <code>times[-1]</code> once during the iteration. Negative indices are <a href="https://stackoverflow.com/a/16110069/418413">only very recently part of bash arrays</a>, so that is most likely why you ar... | <p>So on line 38,</p> <pre><code>if (( times[$i] > times[$i - 1] + $SECS + 10 )) </code></pre> <p>would refer to <code>times[-1]</code> once during the iteration. Negative indices are <a href="https://stackoverflow.com/a/16110069/418413">only very recently part of bash arrays</a>, so that is most likely why you ar... | 114, 387, 390 | arrays, bash, shell | <h1>Bad array subscript</h1>
<p>I'm relatively new to Shell and I've been trying to use arrays in Shell and it's not working well. I'm trying to write a script to suspend OpenVZ containers should they hit a certain bandwidth threshold over a period of time.</p>
<p>My script:</p>
<pre><code>#!/bin/bash
#Thresholds are... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,862 | bash | # Bad array subscript
I'm relatively new to Shell and I've been trying to use arrays in Shell and it's not working well. I'm trying to write a script to suspend OpenVZ containers should they hit a certain bandwidth threshold over a period of time.
My script:
```
#!/bin/bash
#Thresholds are in bytes per second and co... | So on line 38,
```
if (( times[$i] > times[$i - 1] + $SECS + 10 ))
```
would refer to `times[-1]` once during the iteration. Negative indices are [only very recently part of bash arrays](https://stackoverflow.com/a/16110069/418413), so that is most likely why you are getting the error.
Likewise with lines 54 and 67 ... |
15815840 | Is it possible to display the progress of a sort in linux? | 9 | 2013-04-04 15:46:28 | <p>My job involves a lot of sorting fields from very large files. I usually do this with the <code>sort</code> command in bash. Unfortunately, when I start a sort I am never really sure how long it is going to take. Should I wait a second for the results to appear, or should I start working on something else while it r... | 3,507 | 446,554 | 2014-08-20 11:10:56 | 15,816,070 | 12 | 2013-04-04 15:59:05 | 166,749 | 2014-08-20 11:10:56 | https://stackoverflow.com/q/15815840 | https://stackoverflow.com/a/15816070 | <p>No, GNU <code>sort</code> does not do progress reporting.</p>
<p>However, if are you using <code>sort</code> just to remove duplicates, and you don't actually care about the ordering, then there's a <a href="http://www.catonmat.net/blog/wp-content/uploads/2008/09/awk1line.txt" rel="noreferrer">more scalable way</a>... | <p>No, GNU <code>sort</code> does not do progress reporting.</p> <p>However, if are you using <code>sort</code> just to remove duplicates, and you don't actually care about the ordering, then there's a <a href="http://www.catonmat.net/blog/wp-content/uploads/2008/09/awk1line.txt" rel="noreferrer">more scalable way</a>... | 58, 134, 387 | bash, linux, sorting | <h1>Is it possible to display the progress of a sort in linux?</h1>
<p>My job involves a lot of sorting fields from very large files. I usually do this with the <code>sort</code> command in bash. Unfortunately, when I start a sort I am never really sure how long it is going to take. Should I wait a second for the resul... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,863 | bash | # Is it possible to display the progress of a sort in linux?
My job involves a lot of sorting fields from very large files. I usually do this with the `sort` command in bash. Unfortunately, when I start a sort I am never really sure how long it is going to take. Should I wait a second for the results to appear, or sho... | No, GNU `sort` does not do progress reporting.
However, if are you using `sort` just to remove duplicates, and you don't actually care about the ordering, then there's a [more scalable way](http://www.catonmat.net/blog/wp-content/uploads/2008/09/awk1line.txt) of doing that:
```
awk '! a[$0]++'
```
This writes out th... |
15182577 | Run parallel Invoke-WebRequest jobs in PowerShell v3 | 9 | 2013-03-03 04:54:56 | <p>Running simultaneous background jobs in PowerShell in pretty straightforward, but I cannot seem to get it working with the new (in v3) cmdlet Invoke-WebRequest.</p>
<p>I have several thousand files I am downloading scriptomagically via PowerShell. Works great, but doing them in series is taking days:</p>
<pre><co... | 17,793 | 2,009,405 | 2013-12-22 19:15:10 | 15,182,694 | 12 | 2013-03-03 05:16:14 | 153,982 | 2013-03-03 05:16:14 | https://stackoverflow.com/q/15182577 | https://stackoverflow.com/a/15182694 | <p>You need to pass in the parameters in such as way that they actually make it into the job. In V3, you can use the $using: syntax to do this:</p>
<pre><code>for($f=0;$f -lt $urlList.Count;$f++)
{
$remote = $urlList[$f] + $fileList[$f]
$local = 'C:\folder\' + $fileList[$f]
Start-Job {Invoke-WebRequest $us... | <p>You need to pass in the parameters in such as way that they actually make it into the job. In V3, you can use the $using: syntax to do this:</p> <pre><code>for($f=0;$f -lt $urlList.Count;$f++) { $remote = $urlList[$f] + $fileList[$f] $local = 'C:\folder\' + $fileList[$f] Start-Job {Invoke-WebRequest $us... | 526, 8109, 15292, 73157, 153947 | background-process, download, powershell, powershell-3.0, powershell-cmdlet | <h1>Run parallel Invoke-WebRequest jobs in PowerShell v3</h1>
<p>Running simultaneous background jobs in PowerShell in pretty straightforward, but I cannot seem to get it working with the new (in v3) cmdlet Invoke-WebRequest.</p>
<p>I have several thousand files I am downloading scriptomagically via PowerShell. Works... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,864 | bash | # Run parallel Invoke-WebRequest jobs in PowerShell v3
Running simultaneous background jobs in PowerShell in pretty straightforward, but I cannot seem to get it working with the new (in v3) cmdlet Invoke-WebRequest.
I have several thousand files I am downloading scriptomagically via PowerShell. Works great, but doing... | You need to pass in the parameters in such as way that they actually make it into the job. In V3, you can use the $using: syntax to do this:
```
for($f=0;$f -lt $urlList.Count;$f++)
{
$remote = $urlList[$f] + $fileList[$f]
$local = 'C:\folder\' + $fileList[$f]
Start-Job {Invoke-WebRequest $using:remote -Me... |
14598583 | find file names that return success on -exec command | 9 | 2013-01-30 07:18:15 | <p>I am using find to find names of databases that return some rows for a query.</p>
<pre><code>$ find . -name 'sqlite.db' -exec sqlite3 "{}" 'SELECT * FROM table WHERE column1="value"' \;
value|a|b|c|d
</code></pre>
<p>But I want the name of the database, so I tried -print which showed all the names</p>
<pre><cod... | 5,164 | 786,691 | 2014-05-02 00:49:26 | 14,611,634 | 12 | 2013-01-30 18:57:38 | 140,750 | 2013-01-30 18:57:38 | https://stackoverflow.com/q/14598583 | https://stackoverflow.com/a/14611634 | <p>You just need to <code>-print</code> after the <code>-exec</code>. It is a short circuiting boolean <code>and</code>, and by putting <code>-print</code> before <code>-exec</code>, the print happens before the exec does. </p>
<pre><code>find . -name sqlite.db -exec ... \; -print
</code></pre>
| <p>You just need to <code>-print</code> after the <code>-exec</code>. It is a short circuiting boolean <code>and</code>, and by putting <code>-print</code> before <code>-exec</code>, the print happens before the exec does. </p> <pre><code>find . -name sqlite.db -exec ... \; -print </code></pre> | 34, 58, 387, 10193 | bash, find, linux, unix | <h1>find file names that return success on -exec command</h1>
<p>I am using find to find names of databases that return some rows for a query.</p>
<pre><code>$ find . -name 'sqlite.db' -exec sqlite3 "{}" 'SELECT * FROM table WHERE column1="value"' \;
value|a|b|c|d
</code></pre>
<p>But I want the name of the databas... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,865 | bash | # find file names that return success on -exec command
I am using find to find names of databases that return some rows for a query.
```
$ find . -name 'sqlite.db' -exec sqlite3 "{}" 'SELECT * FROM table WHERE column1="value"' \;
value|a|b|c|d
```
But I want the name of the database, so I tried -print which showed... | You just need to `-print` after the `-exec`. It is a short circuiting boolean `and`, and by putting `-print` before `-exec`, the print happens before the exec does.
```
find . -name sqlite.db -exec ... \; -print
``` |
14560796 | bash aliases and awk escaping of quotes | 9 | 2013-01-28 11:14:20 | <p>I'm trying to create an alias for a command to see the memory use,</p>
<pre><code>ps -u user -o rss,command | grep -v peruser | awk '{sum+=$1} END {print sum/1024}'
</code></pre>
<p>but, the naive,</p>
<pre><code>#.bash_aliases
alias totalmem='ps -u user -o rss,command | grep -v peruser | awk '{sum+=$1} END {prin... | 7,548 | 218,558 | 2022-09-01 15:13:11 | 14,560,889 | 12 | 2013-01-28 11:20:14 | 1,331,399 | 2016-06-06 15:04:15 | https://stackoverflow.com/q/14560796 | https://stackoverflow.com/a/14560889 | <p>You almost have it, the <code>$</code> will be expanded in double-quotes, so that needs extra escaping:</p>
<pre><code>alias totalmem='ps -u user -o rss,command | grep -v peruser | awk "{sum+=\$1} END {print sum/1024}"'
</code></pre>
<p>Or with the pattern inside <code>awk</code> as suggested by <em>iiSeymour</em>... | <p>You almost have it, the <code>$</code> will be expanded in double-quotes, so that needs extra escaping:</p> <pre><code>alias totalmem='ps -u user -o rss,command | grep -v peruser | awk "{sum+=\$1} END {print sum/1024}"' </code></pre> <p>Or with the pattern inside <code>awk</code> as suggested by <em>iiSeymour</em>... | 387, 990, 1448, 58076 | alias, awk, bash, quote | <h1>bash aliases and awk escaping of quotes</h1>
<p>I'm trying to create an alias for a command to see the memory use,</p>
<pre><code>ps -u user -o rss,command | grep -v peruser | awk '{sum+=$1} END {print sum/1024}'
</code></pre>
<p>but, the naive,</p>
<pre><code>#.bash_aliases
alias totalmem='ps -u user -o rss,com... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,866 | bash | # bash aliases and awk escaping of quotes
I'm trying to create an alias for a command to see the memory use,
```
ps -u user -o rss,command | grep -v peruser | awk '{sum+=$1} END {print sum/1024}'
```
but, the naive,
```
#.bash_aliases
alias totalmem='ps -u user -o rss,command | grep -v peruser | awk '{sum+=$1} END ... | You almost have it, the `$` will be expanded in double-quotes, so that needs extra escaping:
```
alias totalmem='ps -u user -o rss,command | grep -v peruser | awk "{sum+=\$1} END {print sum/1024}"'
```
Or with the pattern inside `awk` as suggested by *iiSeymour*:
```
alias totalmem='ps -u user -o rss,command | awk "... |
13760795 | How to Pass PSCredential object from C# code to Powershell Function | 9 | 2012-12-07 10:00:07 | <p>I have a PSCredential Object in C# and want to pass it as parameter for this PowerShell Script</p>
<p>This is the PSCredential Object</p>
<pre><code> PSCredential Credential = new PSCredential ( "bla" , blasecurestring)
</code></pre>
<p>This is the Script I want to run in C#</p>
<pre><code>powershell.AddScrip... | 16,431 | 1,740,630 | 2012-12-14 09:50:50 | 13,876,081 | 12 | 2012-12-14 09:43:15 | 1,740,630 | 2012-12-14 09:50:50 | https://stackoverflow.com/q/13760795 | https://stackoverflow.com/a/13876081 | <p>I found the solution now. It's so easy when you know what you do...</p>
<pre><code>powershell.AddCommand("Set-Variable");
powershell.AddParameter("Name", "cred");
powershell.AddParameter("Value", Credential);
powershell.AddScript(@"$s = New-PSSession -ComputerName '" + serverName + "' -Credential $cred");
powershe... | <p>I found the solution now. It's so easy when you know what you do...</p> <pre><code>powershell.AddCommand("Set-Variable"); powershell.AddParameter("Name", "cred"); powershell.AddParameter("Value", Credential); powershell.AddScript(@"$s = New-PSSession -ComputerName '" + serverName + "' -Credential $cred"); powershe... | 9, 526 | c#, powershell | <h1>How to Pass PSCredential object from C# code to Powershell Function</h1>
<p>I have a PSCredential Object in C# and want to pass it as parameter for this PowerShell Script</p>
<p>This is the PSCredential Object</p>
<pre><code> PSCredential Credential = new PSCredential ( "bla" , blasecurestring)
</code></pre>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,867 | bash | # How to Pass PSCredential object from C# code to Powershell Function
I have a PSCredential Object in C# and want to pass it as parameter for this PowerShell Script
This is the PSCredential Object
```
PSCredential Credential = new PSCredential ( "bla" , blasecurestring)
```
This is the Script I want to run in C... | I found the solution now. It's so easy when you know what you do...
```
powershell.AddCommand("Set-Variable");
powershell.AddParameter("Name", "cred");
powershell.AddParameter("Value", Credential);
powershell.AddScript(@"$s = New-PSSession -ComputerName '" + serverName + "' -Credential $cred");
powershell.AddScript(@... |
12535766 | Store PostgreSQL query result to Shell or PostgreSQL variable | 9 | 2012-09-21 18:01:40 | <p>For instance, I have a table stores value:</p>
<pre><code>select * from myvalue;
val
-------
12345
(1 row)
</code></pre>
<p>How can I save this <code>12345</code> into a variable in postgresql or shell script?</p>
<p>Here's what I tried in my shell script:</p>
<pre><code>var=$(psql -h host -U user -d db <... | 18,559 | 1,021,602 | 2018-08-02 20:18:46 | 12,535,875 | 12 | 2012-09-21 18:08:13 | 1,673,397 | 2015-08-26 13:47:03 | https://stackoverflow.com/q/12535766 | https://stackoverflow.com/a/12535875 | <p>No, no, no! Use "raw data" switch from psql, like "-t" or "\t" and pipe the query to psql instead of parsing ascii-table, come on :-)</p>
<pre><code>echo 'select * from myvalue;' | psql -t -h host -U user -d db
</code></pre>
<p>If you really need parse psql output, you could also use -H switch ( turns on HTML outp... | <p>No, no, no! Use "raw data" switch from psql, like "-t" or "\t" and pipe the query to psql instead of parsing ascii-table, come on :-)</p> <pre><code>echo 'select * from myvalue;' | psql -t -h host -U user -d db </code></pre> <p>If you really need parse psql output, you could also use -H switch ( turns on HTML outp... | 256, 390 | postgresql, shell | <h1>Store PostgreSQL query result to Shell or PostgreSQL variable</h1>
<p>For instance, I have a table stores value:</p>
<pre><code>select * from myvalue;
val
-------
12345
(1 row)
</code></pre>
<p>How can I save this <code>12345</code> into a variable in postgresql or shell script?</p>
<p>Here's what I tried in... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,868 | bash | # Store PostgreSQL query result to Shell or PostgreSQL variable
For instance, I have a table stores value:
```
select * from myvalue;
val
-------
12345
(1 row)
```
How can I save this `12345` into a variable in postgresql or shell script?
Here's what I tried in my shell script:
```
var=$(psql -h host -U user -... | No, no, no! Use "raw data" switch from psql, like "-t" or "\t" and pipe the query to psql instead of parsing ascii-table, come on :-)
```
echo 'select * from myvalue;' | psql -t -h host -U user -d db
```
If you really need parse psql output, you could also use -H switch ( turns on HTML output ), and parse it with som... |
10542694 | Bash or vim alias/command to use a certain template when creating Python files? | 9 | 2012-05-10 21:53:26 | <p>I was wondering if it is possible to insert something in <code>.bashrc</code> or <code>.vimrc</code> so that whenever I create a new Python file via <code>vim</code> it automatically creates a file with this already inserted before I edit it:</p>
<pre><code>#!/usr/bin/env python
import sys
if __name__ == '__main_... | 692 | 613,973 | 2012-05-11 13:46:37 | 10,542,757 | 12 | 2012-05-10 21:59:02 | 1,282,240 | 2012-05-11 13:46:37 | https://stackoverflow.com/q/10542694 | https://stackoverflow.com/a/10542757 | <p>Or if you want to avoid plugins:</p>
<pre><code>autocmd bufnewfile *.py 0r /path/to/python_default.py
</code></pre>
| <p>Or if you want to avoid plugins:</p> <pre><code>autocmd bufnewfile *.py 0r /path/to/python_default.py </code></pre> | 16, 370, 387 | bash, python, vim | <h1>Bash or vim alias/command to use a certain template when creating Python files?</h1>
<p>I was wondering if it is possible to insert something in <code>.bashrc</code> or <code>.vimrc</code> so that whenever I create a new Python file via <code>vim</code> it automatically creates a file with this already inserted bef... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,869 | bash | # Bash or vim alias/command to use a certain template when creating Python files?
I was wondering if it is possible to insert something in `.bashrc` or `.vimrc` so that whenever I create a new Python file via `vim` it automatically creates a file with this already inserted before I edit it:
```
#!/usr/bin/env python
... | Or if you want to avoid plugins:
```
autocmd bufnewfile *.py 0r /path/to/python_default.py
``` |
10342018 | basic shell programming | 9 | 2012-04-26 21:58:39 | <p>Probably this is a very basic question for shell programmers.
But suppose I have a text file A and B
and B is a subset of A.</p>
<p>I want to create a text file C which contains (A-B) data.</p>
<p>So omit all the common lines .</p>
<p>The line in files are numeric data: like</p>
<pre><code>id , some aspect, othe... | 271 | 902,885 | 2012-11-16 05:14:32 | 10,342,044 | 12 | 2012-04-26 22:00:26 | 836,738 | 2012-04-29 14:40:45 | https://stackoverflow.com/q/10342018 | https://stackoverflow.com/a/10342044 | <p>Use <a href="http://linux.die.net/man/1/sort" rel="nofollow noreferrer"><code>sort</code></a> and <a href="http://ss64.com/bash/uniq.html" rel="nofollow noreferrer"><code>uniq</code></a></p>
<pre><code>sort a b | uniq -u
</code></pre>
<p>If you want the lines that are the same between A and B, you can use <code>un... | <p>Use <a href="http://linux.die.net/man/1/sort" rel="nofollow noreferrer"><code>sort</code></a> and <a href="http://ss64.com/bash/uniq.html" rel="nofollow noreferrer"><code>uniq</code></a></p> <pre><code>sort a b | uniq -u </code></pre> <p>If you want the lines that are the same between A and B, you can use <code>un... | 387, 390, 990 | awk, bash, shell | <h1>basic shell programming</h1>
<p>Probably this is a very basic question for shell programmers.
But suppose I have a text file A and B
and B is a subset of A.</p>
<p>I want to create a text file C which contains (A-B) data.</p>
<p>So omit all the common lines .</p>
<p>The line in files are numeric data: like</p>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,870 | bash | # basic shell programming
Probably this is a very basic question for shell programmers.
But suppose I have a text file A and B
and B is a subset of A.
I want to create a text file C which contains (A-B) data.
So omit all the common lines .
The line in files are numeric data: like
```
id , some aspect, other aspec.... | Use [`sort`](http://linux.die.net/man/1/sort) and [`uniq`](http://ss64.com/bash/uniq.html)
```
sort a b | uniq -u
```
If you want the lines that are the same between A and B, you can use `uniq -d`
```
sort a b | uniq -d
```
This assumes of course that the data in A and B are *exactly* the same. There cannot be any ... |
10230288 | How can I fork two programs to the background using one line of bash and possibly an ampersand? | 9 | 2012-04-19 14:28:17 | <p>I have two programs that run indefinitely. I know I can fork one to the background then run the other by typing this at the command line:</p>
<pre><code>> program1 &
> program2 &
</code></pre>
<p>However, I'm lazy and don't want to hit enter, I just want to run them both immediately. But bash compl... | 2,707 | 446,554 | 2012-04-19 19:39:13 | 10,230,452 | 12 | 2012-04-19 14:36:54 | 620,097 | 2012-04-19 14:36:54 | https://stackoverflow.com/q/10230288 | https://stackoverflow.com/a/10230452 | <p>You leave out the ';' char, i.e.</p>
<pre><code> program1 & program2 &
</code></pre>
<p>I hope this helps.</p>
| <p>You leave out the ';' char, i.e.</p> <pre><code> program1 & program2 & </code></pre> <p>I hope this helps.</p> | 387, 15292 | background-process, bash | <h1>How can I fork two programs to the background using one line of bash and possibly an ampersand?</h1>
<p>I have two programs that run indefinitely. I know I can fork one to the background then run the other by typing this at the command line:</p>
<pre><code>> program1 &
> program2 &
</code></pre>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,871 | bash | # How can I fork two programs to the background using one line of bash and possibly an ampersand?
I have two programs that run indefinitely. I know I can fork one to the background then run the other by typing this at the command line:
```
> program1 &
> program2 &
```
However, I'm lazy and don't want to hit enter, ... | You leave out the ';' char, i.e.
```
program1 & program2 &
```
I hope this helps. |
10070415 | Convert first letter of given file to lower case | 9 | 2012-04-09 07:49:46 | <p>I want to convert the 1st letter of each line to lower case up to the end of the file. How can I do this using shell scripting?</p>
<p>I tried this:</p>
<pre><code>plat=`echo $plat |cut -c1 |tr [:upper:] [:lower:]``echo $plat |cut -c2-`
</code></pre>
<p>but this converts only the first character to lower case.</p... | 9,486 | 278,521 | 2017-09-20 13:44:01 | 10,070,504 | 12 | 2012-04-09 08:01:23 | 635,608 | 2012-04-09 08:01:23 | https://stackoverflow.com/q/10070415 | https://stackoverflow.com/a/10070504 | <p>You can do that with <code>sed</code>:</p>
<pre><code>sed -e 's/./\L&/' Shell.txt
</code></pre>
<p>(Probably safer to do</p>
<pre><code>sed -e 's/^./\L&\E/' Shell.txt
</code></pre>
<p>if you ever want to extend this.)</p>
| <p>You can do that with <code>sed</code>:</p> <pre><code>sed -e 's/./\L&/' Shell.txt </code></pre> <p>(Probably safer to do</p> <pre><code>sed -e 's/^./\L&\E/' Shell.txt </code></pre> <p>if you ever want to extend this.)</p> | 58, 387, 390 | bash, linux, shell | <h1>Convert first letter of given file to lower case</h1>
<p>I want to convert the 1st letter of each line to lower case up to the end of the file. How can I do this using shell scripting?</p>
<p>I tried this:</p>
<pre><code>plat=`echo $plat |cut -c1 |tr [:upper:] [:lower:]``echo $plat |cut -c2-`
</code></pre>
<p>bu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,872 | bash | # Convert first letter of given file to lower case
I want to convert the 1st letter of each line to lower case up to the end of the file. How can I do this using shell scripting?
I tried this:
```
plat=`echo $plat |cut -c1 |tr [:upper:] [:lower:]``echo $plat |cut -c2-`
```
but this converts only the first character... | You can do that with `sed`:
```
sed -e 's/./\L&/' Shell.txt
```
(Probably safer to do
```
sed -e 's/^./\L&\E/' Shell.txt
```
if you ever want to extend this.) |
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