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9961291 | Is this a bug in bash ?(up arrow) | 9 | 2012-04-01 01:49:23 | <p>As we know, press up arrow key can show history commands,but i found that when a command which starting with space will not show in "up arrow"'s history:</p>
<p><code>$ls</code></p>
<p><code>$(press up arrow key)</code></p>
<p>bash will show:</p>
<p><code>$ls</code></p>
<p>however:</p>
<p><code>$ps</code></p>
... | 588 | 1,068,676 | 2012-04-01 01:53:16 | 9,961,313 | 12 | 2012-04-01 01:53:16 | 377,270 | 2012-04-01 01:53:16 | https://stackoverflow.com/q/9961291 | https://stackoverflow.com/a/9961313 | <p>From <code>bash(1)</code>:</p>
<pre><code> HISTCONTROL
A colon-separated list of values controlling how
commands are saved on the history list. If the list
of values includes ignorespace, lines which begin with
a space character are not saved in the history list.
</code></... | <p>From <code>bash(1)</code>:</p> <pre><code> HISTCONTROL A colon-separated list of values controlling how commands are saved on the history list. If the list of values includes ignorespace, lines which begin with a space character are not saved in the history list. </code></... | 58, 387 | bash, linux | <h1>Is this a bug in bash ?(up arrow)</h1>
<p>As we know, press up arrow key can show history commands,but i found that when a command which starting with space will not show in "up arrow"'s history:</p>
<p><code>$ls</code></p>
<p><code>$(press up arrow key)</code></p>
<p>bash will show:</p>
<p><code>$ls</code></p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,873 | bash | # Is this a bug in bash ?(up arrow)
As we know, press up arrow key can show history commands,but i found that when a command which starting with space will not show in "up arrow"'s history:
`$ls`
`$(press up arrow key)`
bash will show:
`$ls`
however:
`$ps`
`$ ls(notice this command starts with a space)`
now i ... | From `bash(1)`:
```
HISTCONTROL
A colon-separated list of values controlling how
commands are saved on the history list. If the list
of values includes ignorespace, lines which begin with
a space character are not saved in the history list.
```
It's an intentional feature t... |
8841195 | How can I script file generation from a template using bash? | 9 | 2012-01-12 19:36:56 | <p>I am trying to automate the set up of site creation for our in-house development server.</p>
<p>Currently, this consists of creating a system user, mysql user, database, and apache config. I know how I can do everything in a single bash file, but I wanted to ask if there was a way to more cleanly generate the apach... | 9,518 | 245,163 | 2020-07-22 17:32:11 | 8,842,048 | 12 | 2012-01-12 20:46:41 | 15,168 | 2012-01-12 21:40:33 | https://stackoverflow.com/q/8841195 | https://stackoverflow.com/a/8842048 | <p>Choose a way of marking parameters. One possibility is <code>:parameter:</code>, but any similar pair of markers that won't be confused with legitimate text for the template file(s) is good.</p>
<p>Write a <code>sed</code> script (in <code>sed</code>, <code>awk</code>, <code>perl</code>, ...) similar to the follow... | <p>Choose a way of marking parameters. One possibility is <code>:parameter:</code>, but any similar pair of markers that won't be confused with legitimate text for the template file(s) is good.</p> <p>Write a <code>sed</code> script (in <code>sed</code>, <code>awk</code>, <code>perl</code>, ...) similar to the follow... | 387, 990, 1156, 5282 | awk, bash, printf, sed | <h1>How can I script file generation from a template using bash?</h1>
<p>I am trying to automate the set up of site creation for our in-house development server.</p>
<p>Currently, this consists of creating a system user, mysql user, database, and apache config. I know how I can do everything in a single bash file, but... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,874 | bash | # How can I script file generation from a template using bash?
I am trying to automate the set up of site creation for our in-house development server.
Currently, this consists of creating a system user, mysql user, database, and apache config. I know how I can do everything in a single bash file, but I wanted to ask... | Choose a way of marking parameters. One possibility is `:parameter:`, but any similar pair of markers that won't be confused with legitimate text for the template file(s) is good.
Write a `sed` script (in `sed`, `awk`, `perl`, ...) similar to the following:
```
sed -e "s/:param1:/$param1/g" \
-e "s/:param2:/$para... |
8672039 | See what process last touched a file | 9 | 2011-12-29 18:48:41 | <p>On a linux box that there is some process regularly changing permissions on directories and files, roughly daily. This is not a process that I set up and I have no idea what it is.</p>
<p>I have root access and I can easily change permissions manually to get access back but it is a bit annoying.</p>
<p>Is there an... | 8,532 | 831,964 | 2011-12-29 19:12:44 | 8,672,155 | 12 | 2011-12-29 18:57:40 | 475,150 | 2011-12-29 19:12:44 | https://stackoverflow.com/q/8672039 | https://stackoverflow.com/a/8672155 | <p>On a Fedora system, you can use:</p>
<pre><code>sudo auditctl -p a -w /some/file # monitor attribute changes to /some/file
</code></pre>
<p>It's in the <code>audit</code> package, if you don't have that installed, then <code>sudo yum install audit</code></p>
<p>The output goes into <code>/var/log/audit/audit.log... | <p>On a Fedora system, you can use:</p> <pre><code>sudo auditctl -p a -w /some/file # monitor attribute changes to /some/file </code></pre> <p>It's in the <code>audit</code> package, if you don't have that installed, then <code>sudo yum install audit</code></p> <p>The output goes into <code>/var/log/audit/audit.log... | 58, 387 | bash, linux | <h1>See what process last touched a file</h1>
<p>On a linux box that there is some process regularly changing permissions on directories and files, roughly daily. This is not a process that I set up and I have no idea what it is.</p>
<p>I have root access and I can easily change permissions manually to get access back... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,875 | bash | # See what process last touched a file
On a linux box that there is some process regularly changing permissions on directories and files, roughly daily. This is not a process that I set up and I have no idea what it is.
I have root access and I can easily change permissions manually to get access back but it is a bit... | On a Fedora system, you can use:
```
sudo auditctl -p a -w /some/file # monitor attribute changes to /some/file
```
It's in the `audit` package, if you don't have that installed, then `sudo yum install audit`
The output goes into `/var/log/audit/audit.log` in the form:
```
type=SYSCALL msg=audit(1325185116.524:1... |
8081297 | sed to change string in a file only once | 9 | 2011-11-10 14:45:41 | <p>suggest I have a file <code>example</code> as follows:</p>
<pre><code>c
a
b
a
b
d
</code></pre>
<p>and I want to change the first occurance of <code>a</code> to <code>e</code>. Then I do this:</p>
<pre><code>sed -i 's/a/e/' example
</code></pre>
<p>and all <code>a</code> changed to <code>e</code>.</p>
<p>So is ... | 6,986 | 543,492 | 2024-03-12 08:33:03 | 8,081,372 | 12 | 2011-11-10 14:51:05 | 1,034,080 | 2011-11-10 14:51:05 | https://stackoverflow.com/q/8081297 | https://stackoverflow.com/a/8081372 | <p>Applying the information from Aziz' duplicate link to your question, I think this will give you the desired result for your case:</p>
<pre><code>sed -i '0,/a/s//e/' example
</code></pre>
| <p>Applying the information from Aziz' duplicate link to your question, I think this will give you the desired result for your case:</p> <pre><code>sed -i '0,/a/s//e/' example </code></pre> | 387, 5282, 11225 | bash, command-line-interface, sed | <h1>sed to change string in a file only once</h1>
<p>suggest I have a file <code>example</code> as follows:</p>
<pre><code>c
a
b
a
b
d
</code></pre>
<p>and I want to change the first occurance of <code>a</code> to <code>e</code>. Then I do this:</p>
<pre><code>sed -i 's/a/e/' example
</code></pre>
<p>and all <code>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,876 | bash | # sed to change string in a file only once
suggest I have a file `example` as follows:
```
c
a
b
a
b
d
```
and I want to change the first occurance of `a` to `e`. Then I do this:
```
sed -i 's/a/e/' example
```
and all `a` changed to `e`.
So is there any way to make sed only replace once within a file?
Thanks. | Applying the information from Aziz' duplicate link to your question, I think this will give you the desired result for your case:
```
sed -i '0,/a/s//e/' example
``` |
6704197 | Why use a Groovy shell script over Bash (when memory footprint is important)? | 9 | 2011-07-15 08:08:09 | <p>I've got a Bash script (50 lines of code) that requires a bit of hacking due to limitations of bash. So someone said: "hey, use a better language than bash for that!"</p>
<p>So, I looked at Groovy (Groovy/Grails is next up on my to-learn list, so maybe this is a good time). I can do more complex shell scripts, so t... | 9,393 | 4,790,871 | 2013-08-24 17:41:19 | 6,704,238 | 12 | 2011-07-15 08:12:39 | 40,342 | 2011-07-15 08:19:40 | https://stackoverflow.com/q/6704197 | https://stackoverflow.com/a/6704238 | <p>If memory is limited like that, then any language running on the JVM will be at a disadvantage. And Groovy is such a language.</p>
<p>Other languages like Python or Perl have a leaner runtime and require less memory for simple scripts (my guess is that Python is still a bit leaner than Perl, but I can't back that u... | <p>If memory is limited like that, then any language running on the JVM will be at a disadvantage. And Groovy is such a language.</p> <p>Other languages like Python or Perl have a leaner runtime and require less memory for simple scripts (my guess is that Python is still a bit leaner than Perl, but I can't back that u... | 58, 387, 849 | bash, groovy, linux | <h1>Why use a Groovy shell script over Bash (when memory footprint is important)?</h1>
<p>I've got a Bash script (50 lines of code) that requires a bit of hacking due to limitations of bash. So someone said: "hey, use a better language than bash for that!"</p>
<p>So, I looked at Groovy (Groovy/Grails is next up on my ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,877 | bash | # Why use a Groovy shell script over Bash (when memory footprint is important)?
I've got a Bash script (50 lines of code) that requires a bit of hacking due to limitations of bash. So someone said: "hey, use a better language than bash for that!"
So, I looked at Groovy (Groovy/Grails is next up on my to-learn list, s... | If memory is limited like that, then any language running on the JVM will be at a disadvantage. And Groovy is such a language.
Other languages like Python or Perl have a leaner runtime and require less memory for simple scripts (my guess is that Python is still a bit leaner than Perl, but I can't back that up with num... |
6239291 | Logging in via a script to a remote server and execute a set of commands | 9 | 2011-06-04 20:45:24 | <p>How can I login to a remote server and execute a set of commands then when done logout and continue my script?</p>
<p>Thanks.</p>
| 23,573 | 504,715 | 2013-06-06 21:01:35 | 6,239,313 | 12 | 2011-06-04 20:49:46 | 174,430 | 2011-06-04 20:49:46 | https://stackoverflow.com/q/6239291 | https://stackoverflow.com/a/6239313 | <p>ssh can be used to execute a command, rather than start a remote interactive login shell. For example:</p>
<pre><code>ssh user@host ls
</code></pre>
<p>Will log into host and execute the <code>ls</code> command.</p>
<p>You can use this inside a bash script as normal:</p>
<pre><code>#!/bin/bash
# do local comman... | <p>ssh can be used to execute a command, rather than start a remote interactive login shell. For example:</p> <pre><code>ssh user@host ls </code></pre> <p>Will log into host and execute the <code>ls</code> command.</p> <p>You can use this inside a bash script as normal:</p> <pre><code>#!/bin/bash # do local comman... | 386, 387, 1231 | bash, command-line, ssh | <h1>Logging in via a script to a remote server and execute a set of commands</h1>
<p>How can I login to a remote server and execute a set of commands then when done logout and continue my script?</p>
<p>Thanks.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,878 | bash | # Logging in via a script to a remote server and execute a set of commands
How can I login to a remote server and execute a set of commands then when done logout and continue my script?
Thanks. | ssh can be used to execute a command, rather than start a remote interactive login shell. For example:
```
ssh user@host ls
```
Will log into host and execute the `ls` command.
You can use this inside a bash script as normal:
```
#!/bin/bash
# do local commands
ssh user@host "ls; grep something file.txt; copy a b... |
4470673 | bash, find, exec and echo | 9 | 2010-12-17 13:02:32 | <pre><code>find . \
-name 'user_prefs' \
-exec echo "whitelist_from basheer@hydrofitgroup.com" >> {} \;'
</code></pre>
<p>I would like to add the line <code>whitelist_from basheer@hydrofitgroup.com</code> to all files that are found by <code>find</code>, but my command does not work.
It just creates the file... | 12,226 | 383,908 | 2016-08-29 12:26:50 | 4,470,706 | 12 | 2010-12-17 13:07:32 | 119,797 | 2010-12-17 13:07:32 | https://stackoverflow.com/q/4470673 | https://stackoverflow.com/a/4470706 | <p>You have to escape the '>>', for example like this:</p>
<pre><code>find . -name 'user_prefs' -exec sh -c 'echo "whitelist_from basheer@hydrofitgroup.com" >> {}' \;
</code></pre>
| <p>You have to escape the '>>', for example like this:</p> <pre><code>find . -name 'user_prefs' -exec sh -c 'echo "whitelist_from basheer@hydrofitgroup.com" >> {}' \; </code></pre> | 387, 1231, 2531, 10193 | bash, command-line, find, for-loop | <h1>bash, find, exec and echo</h1>
<pre><code>find . \
-name 'user_prefs' \
-exec echo "whitelist_from basheer@hydrofitgroup.com" >> {} \;'
</code></pre>
<p>I would like to add the line <code>whitelist_from basheer@hydrofitgroup.com</code> to all files that are found by <code>find</code>, but my command does... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,879 | bash | # bash, find, exec and echo
```
find . \
-name 'user_prefs' \
-exec echo "whitelist_from basheer@hydrofitgroup.com" >> {} \;'
```
I would like to add the line `whitelist_from basheer@hydrofitgroup.com` to all files that are found by `find`, but my command does not work.
It just creates the file '{}'.
Shoud i use... | You have to escape the '>>', for example like this:
```
find . -name 'user_prefs' -exec sh -c 'echo "whitelist_from basheer@hydrofitgroup.com" >> {}' \;
``` |
2957828 | Smart image search via Powershell | 9 | 2010-06-02 12:56:46 | <p>I am interested in file searching by custom properties. For example, I want to find all JPEG-images with certain dimensions. Something looks like</p>
<pre><code>Get-ChildItem -Path C:\ -Filter *.jpg -Recursive | where-object { $_.Dimension -eq '1024x768' }
</code></pre>
<p>I suspect it's about using of System.Draw... | 3,169 | 148,405 | 2010-06-03 09:29:45 | 2,957,875 | 12 | 2010-06-02 13:03:45 | 73,070 | 2010-06-02 14:55:12 | https://stackoverflow.com/q/2957828 | https://stackoverflow.com/a/2957875 | <p>That's actually pretty easy to do and your gut feeling about System.Drawing was in fact correct:</p>
<pre><code>Add-Type -Assembly System.Drawing
$input | ForEach-Object { [Drawing.Image]::FromFile($_) }
</code></pre>
<p>Save that as <code>Get-Image.ps1</code> somewhere in your path and then you can use it.</p>
... | <p>That's actually pretty easy to do and your gut feeling about System.Drawing was in fact correct:</p> <pre><code>Add-Type -Assembly System.Drawing $input | ForEach-Object { [Drawing.Image]::FromFile($_) } </code></pre> <p>Save that as <code>Get-Image.ps1</code> somewhere in your path and then you can use it.</p> ... | 526, 4985, 21909 | file-search, image, powershell | <h1>Smart image search via Powershell</h1>
<p>I am interested in file searching by custom properties. For example, I want to find all JPEG-images with certain dimensions. Something looks like</p>
<pre><code>Get-ChildItem -Path C:\ -Filter *.jpg -Recursive | where-object { $_.Dimension -eq '1024x768' }
</code></pre>
<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,880 | bash | # Smart image search via Powershell
I am interested in file searching by custom properties. For example, I want to find all JPEG-images with certain dimensions. Something looks like
```
Get-ChildItem -Path C:\ -Filter *.jpg -Recursive | where-object { $_.Dimension -eq '1024x768' }
```
I suspect it's about using of S... | That's actually pretty easy to do and your gut feeling about System.Drawing was in fact correct:
```
Add-Type -Assembly System.Drawing
$input | ForEach-Object { [Drawing.Image]::FromFile($_) }
```
Save that as `Get-Image.ps1` somewhere in your path and then you can use it.
Another option would be to add the followi... |
2078059 | Python/Django shell won't start | 9 | 2010-01-16 16:23:44 | <p>One of the great features of Django is that you can open a python interpreter set-up for use with your project. This can be used to analyse objects in a database and allows any python commands to be executed on your project. I find it essential for Django development. It is invoked in the project directory using thi... | 14,765 | 166,210 | 2011-12-07 15:50:20 | 2,078,129 | 12 | 2010-01-16 16:43:08 | 104,349 | 2010-01-16 16:43:08 | https://stackoverflow.com/q/2078059 | https://stackoverflow.com/a/2078129 | <p>It seems like IPython is installed wrongly somehow. Try starting the shell with:</p>
<pre><code>./manage.py shell --plain
</code></pre>
<p>to start the standard Python shell, rather than IPython. If that works, then trying removing IPython completely and reinstalling it.</p>
| <p>It seems like IPython is installed wrongly somehow. Try starting the shell with:</p> <pre><code>./manage.py shell --plain </code></pre> <p>to start the standard Python shell, rather than IPython. If that works, then trying removing IPython completely and reinstalling it.</p> | 16, 243, 390 | django, python, shell | <h1>Python/Django shell won't start</h1>
<p>One of the great features of Django is that you can open a python interpreter set-up for use with your project. This can be used to analyse objects in a database and allows any python commands to be executed on your project. I find it essential for Django development. It is i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,881 | bash | # Python/Django shell won't start
One of the great features of Django is that you can open a python interpreter set-up for use with your project. This can be used to analyse objects in a database and allows any python commands to be executed on your project. I find it essential for Django development. It is invoked in... | It seems like IPython is installed wrongly somehow. Try starting the shell with:
```
./manage.py shell --plain
```
to start the standard Python shell, rather than IPython. If that works, then trying removing IPython completely and reinstalling it. |
1218907 | How do I set a Windows Service to start automatically in PowerShell? | 9 | 2009-08-02 13:34:12 | <p>If I know a service name, and have enough permission, how do I set a Windows Service to be auto-restart in PowerShell?</p>
<p>I am using PowerShell 1.0, and the OS is Windows Server 2003.</p>
| 15,398 | 63,235 | 2019-09-11 14:21:34 | 1,218,931 | 12 | 2009-08-02 13:46:22 | 118,959 | 2017-09-19 18:41:57 | https://stackoverflow.com/q/1218907 | https://stackoverflow.com/a/1218931 | <p>You may be asking for:</p>
<pre><code>Set-Service [service name] -startuptype automatic
</code></pre>
<p>See:</p>
<pre><code>> get-help set-service
NAME
Set-Service
SYNOPSIS
Starts, stops, and suspends a service, and changes its properties.
SYNTAX
Set-Service [-StartupType {Automatic | Manual |... | <p>You may be asking for:</p> <pre><code>Set-Service [service name] -startuptype automatic </code></pre> <p>See:</p> <pre><code>> get-help set-service NAME Set-Service SYNOPSIS Starts, stops, and suspends a service, and changes its properties. SYNTAX Set-Service [-StartupType {Automatic | Manual |... | 526, 2596 | powershell, windows-services | <h1>How do I set a Windows Service to start automatically in PowerShell?</h1>
<p>If I know a service name, and have enough permission, how do I set a Windows Service to be auto-restart in PowerShell?</p>
<p>I am using PowerShell 1.0, and the OS is Windows Server 2003.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,882 | bash | # How do I set a Windows Service to start automatically in PowerShell?
If I know a service name, and have enough permission, how do I set a Windows Service to be auto-restart in PowerShell?
I am using PowerShell 1.0, and the OS is Windows Server 2003. | You may be asking for:
```
Set-Service [service name] -startuptype automatic
```
See:
```
> get-help set-service
NAME
Set-Service
SYNOPSIS
Starts, stops, and suspends a service, and changes its properties.
SYNTAX
Set-Service [-StartupType {Automatic | Manual | Disabled}] [-DisplayName <string>] [-Pas... |
766207 | How can I escape characters in SQLite via bash shell? | 9 | 2009-04-19 22:04:11 | <p>I am trying to send a query to SQLite from the command line using bash. I need to escape both single quotes and double quotes, and escape them so that bash does not misinterpret them. Here is a typical query:</p>
<pre><code>select * from contacts where source = "Nancy's notes";
</code></pre>
<p>How can I send this... | 14,888 | 82,056 | 2020-06-21 21:31:58 | 766,301 | 12 | 2009-04-19 22:53:28 | 15,168 | 2009-04-19 22:53:28 | https://stackoverflow.com/q/766207 | https://stackoverflow.com/a/766301 | <p>The trouble with MarkusQ's solution is knowing which characters are special inside double quotes - there are quite a lot of them, including back-ticks, dollar-open parenthesis, dollar-variable, etc.</p>
<p>I would suggest it is better to enclose the string inside single quotes; then, each single quote inside the st... | <p>The trouble with MarkusQ's solution is knowing which characters are special inside double quotes - there are quite a lot of them, including back-ticks, dollar-open parenthesis, dollar-variable, etc.</p> <p>I would suggest it is better to enclose the string inside single quotes; then, each single quote inside the st... | 121, 387, 390, 1231, 4804 | bash, command-line, escaping, shell, sqlite | <h1>How can I escape characters in SQLite via bash shell?</h1>
<p>I am trying to send a query to SQLite from the command line using bash. I need to escape both single quotes and double quotes, and escape them so that bash does not misinterpret them. Here is a typical query:</p>
<pre><code>select * from contacts where ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,883 | bash | # How can I escape characters in SQLite via bash shell?
I am trying to send a query to SQLite from the command line using bash. I need to escape both single quotes and double quotes, and escape them so that bash does not misinterpret them. Here is a typical query:
```
select * from contacts where source = "Nancy's no... | The trouble with MarkusQ's solution is knowing which characters are special inside double quotes - there are quite a lot of them, including back-ticks, dollar-open parenthesis, dollar-variable, etc.
I would suggest it is better to enclose the string inside single quotes; then, each single quote inside the string needs... |
68752743 | I can't I use my code certificate to sign my .exe file (EKU filter) | 8 | 2021-08-12 06:41:45 | <p>I created a code certificate using:</p>
<pre><code>$cert = New-SelfSignedCertificate -CertStoreLocation "Cert:\CurrentUser\My" -dnsname testcert.test.io
$cert
$secPassword = ConvertTo-SecureString -String 'password1234' -Force -AsPlainText
$certPath = "Cert:\CurrentUser\My\$($cert.Thumbprint)"... | 5,392 | 13,204,735 | 2021-08-13 10:00:42 | 68,758,472 | 12 | 2021-08-12 13:32:50 | 12,679 | 2021-08-13 10:00:42 | https://stackoverflow.com/q/68752743 | https://stackoverflow.com/a/68758472 | <p>You need a<code>Code Signing</code>-Certificate, which means that it has an Extended Key Usage (EKU) with the Code signing Object Identifier (OID).</p>
<pre><code>$ku_codeSigning = "1.3.6.1.5.5.7.3.3";
$codeSignCert = New-SelfSignedCertificate `
-Type "CodeSigningCert" `
-KeyExportPoli... | <p>You need a<code>Code Signing</code>-Certificate, which means that it has an Extended Key Usage (EKU) with the Code signing Object Identifier (OID).</p> <pre><code>$ku_codeSigning = "1.3.6.1.5.5.7.3.3"; $codeSignCert = New-SelfSignedCertificate ` -Type "CodeSigningCert" ` -KeyExportPoli... | 64, 526, 5954, 14423 | certificate, powershell, ssl-certificate, windows | <h1>I can't I use my code certificate to sign my .exe file (EKU filter)</h1>
<p>I created a code certificate using:</p>
<pre><code>$cert = New-SelfSignedCertificate -CertStoreLocation "Cert:\CurrentUser\My" -dnsname testcert.test.io
$cert
$secPassword = ConvertTo-SecureString -String 'password1234' -Force -... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,884 | bash | # I can't I use my code certificate to sign my .exe file (EKU filter)
I created a code certificate using:
```
$cert = New-SelfSignedCertificate -CertStoreLocation "Cert:\CurrentUser\My" -dnsname testcert.test.io
$cert
$secPassword = ConvertTo-SecureString -String 'password1234' -Force -AsPlainText
$certPath = "Cer... | You need a`Code Signing`-Certificate, which means that it has an Extended Key Usage (EKU) with the Code signing Object Identifier (OID).
```
$ku_codeSigning = "1.3.6.1.5.5.7.3.3";
$codeSignCert = New-SelfSignedCertificate `
-Type "CodeSigningCert" `
-KeyExportPolicy "Exportable" `
-Subject "..." `
-... |
64601031 | how to escape single quote in `jq` | 8 | 2020-10-30 00:18:04 | <p>I am trying to format a json string using <code>jq</code> with expected output like this:</p>
<pre><code>[
{
"command": [
"printf 'this is a text'"
]
}
]
</code></pre>
<p>However, I cannot get it to work for the single quotes ('), e.g. <code>$ jq -n '[{"command": [&qu... | 14,839 | 1,234,376 | 2020-10-30 07:37:37 | 64,601,499 | 12 | 2020-10-30 01:23:58 | 997,358 | 2020-10-30 05:58:14 | https://stackoverflow.com/q/64601031 | https://stackoverflow.com/a/64601499 | <p>Here are four alternatives that should work with a bash or bash-like shell. They can be adapted for other shells as well.</p>
<pre><code>jq -n $'[{"command": ["printf \'this is a text\'"]}]'
</code></pre>
<pre><code>cat << EOF | jq .
[{"command": ["printf 'this is a text'&quo... | <p>Here are four alternatives that should work with a bash or bash-like shell. They can be adapted for other shells as well.</p> <pre><code>jq -n $'[{"command": ["printf \'this is a text\'"]}]' </code></pre> <pre><code>cat << EOF | jq . [{"command": ["printf 'this is a text'&quo... | 390, 555, 1508, 31796, 105170 | formatting, jq, json, quotation-marks, shell | <h1>how to escape single quote in `jq`</h1>
<p>I am trying to format a json string using <code>jq</code> with expected output like this:</p>
<pre><code>[
{
"command": [
"printf 'this is a text'"
]
}
]
</code></pre>
<p>However, I cannot get it to work for the single quotes ('), e.g.... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,885 | bash | # how to escape single quote in `jq`
I am trying to format a json string using `jq` with expected output like this:
```
[
{
"command": [
"printf 'this is a text'"
]
}
]
```
However, I cannot get it to work for the single quotes ('), e.g. `$ jq -n '[{"command": ["printf 'this is a text'"]}]'` gives ... | Here are four alternatives that should work with a bash or bash-like shell. They can be adapted for other shells as well.
```
jq -n $'[{"command": ["printf \'this is a text\'"]}]'
```
```
cat << EOF | jq .
[{"command": ["printf 'this is a text'"]}]
EOF
```
```
jq --arg cmd "printf 'this is a text'" -n '[{command: [ ... |
63704503 | How do I remove a git branch whose name starts with a unicode character? | 8 | 2020-09-02 11:24:43 | <p>Using GfW I accidentally created a branch whose name begins with <code><U+0096></code>, which seems to be a unicode control-character.</p>
<pre><code>$ git branch
features/#72_some_branch
* features/#73_another_branch
master
<U+0096>features/#73_another_branch
</code></pre>
<p>Now, in order to corr... | 2,376 | 9,197,527 | 2020-09-02 14:12:48 | 63,704,632 | 12 | 2020-09-02 11:32:33 | 9,197,527 | 2020-09-02 11:49:29 | https://stackoverflow.com/q/63704503 | https://stackoverflow.com/a/63704632 | <p>I have to admit, the answer was quite obvious. Using the built-in <code>echo</code> command of the bash shell, I was able to insert the desired symbol:</p>
<pre><code>git branch -d "$(echo -e '\u0096')features/#73_another_branch"
</code></pre>
| <p>I have to admit, the answer was quite obvious. Using the built-in <code>echo</code> command of the bash shell, I was able to insert the desired symbol:</p> <pre><code>git branch -d "$(echo -e '\u0096')features/#73_another_branch" </code></pre> | 119, 61874, 123373 | git, git-bash, git-for-windows | <h1>How do I remove a git branch whose name starts with a unicode character?</h1>
<p>Using GfW I accidentally created a branch whose name begins with <code><U+0096></code>, which seems to be a unicode control-character.</p>
<pre><code>$ git branch
features/#72_some_branch
* features/#73_another_branch
master
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,886 | bash | # How do I remove a git branch whose name starts with a unicode character?
Using GfW I accidentally created a branch whose name begins with `<U+0096>`, which seems to be a unicode control-character.
```
$ git branch
features/#72_some_branch
* features/#73_another_branch
master
<U+0096>features/#73_another_branc... | I have to admit, the answer was quite obvious. Using the built-in `echo` command of the bash shell, I was able to insert the desired symbol:
```
git branch -d "$(echo -e '\u0096')features/#73_another_branch"
``` |
60637859 | Convert sequence of JSON lines (JSONL) to JSON array | 8 | 2020-03-11 14:02:30 | <p>I have a file where each line is a JSON object. I'd like to convert the file to a JSON array.</p>
<p>The file looks something like this:</p>
<pre><code>{"address":"email1@foo.bar.com", "topic":"Some topic."}
{"address":"email2@foo.bar.com", "topic":"Another topic."}
{"address":"email3@foo.bar.com", "topic":"Yet an... | 8,547 | 1,536,611 | 2025-06-03 07:02:34 | 60,639,286 | 12 | 2020-03-11 15:18:41 | 14,122 | 2020-03-11 15:18:41 | https://stackoverflow.com/q/60637859 | https://stackoverflow.com/a/60639286 | <pre><code>jq -n '[inputs]' <in.jsonl >out.json
</code></pre>
<p>...or, as <a href="https://stackoverflow.com/questions/60637859/convert-sequence-of-json-objects-to-json-array#comment107279792_60637859">suggested by @borrible</a>:</p>
<pre><code>jq --slurp . <in.jsonl >out.json
</code></pre>
| <pre><code>jq -n '[inputs]' <in.jsonl >out.json </code></pre> <p>...or, as <a href="https://stackoverflow.com/questions/60637859/convert-sequence-of-json-objects-to-json-array#comment107279792_60637859">suggested by @borrible</a>:</p> <pre><code>jq --slurp . <in.jsonl >out.json </code></pre> | 387, 1508, 105170, 118374 | bash, jq, json, jsonlines | <h1>Convert sequence of JSON lines (JSONL) to JSON array</h1>
<p>I have a file where each line is a JSON object. I'd like to convert the file to a JSON array.</p>
<p>The file looks something like this:</p>
<pre><code>{"address":"email1@foo.bar.com", "topic":"Some topic."}
{"address":"email2@foo.bar.com", "topic":"Ano... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,887 | bash | # Convert sequence of JSON lines (JSONL) to JSON array
I have a file where each line is a JSON object. I'd like to convert the file to a JSON array.
The file looks something like this:
```
{"address":"email1@foo.bar.com", "topic":"Some topic."}
{"address":"email2@foo.bar.com", "topic":"Another topic."}
{"address":"e... | ```
jq -n '[inputs]' <in.jsonl >out.json
```
...or, as [suggested by @borrible](https://stackoverflow.com/questions/60637859/convert-sequence-of-json-objects-to-json-array#comment107279792_60637859):
```
jq --slurp . <in.jsonl >out.json
``` |
59354806 | 'rm' is not recognized as an internal or external command when trying publish a capacitor plugin | 8 | 2019-12-16 10:33:12 | <p>I am trying to publish a capacitor plugin. According to the error it is not able to recognize <code>rm</code>. I am using Window's Powershell (VC Code)
The following error is being generated in the powershell when npm publish in run</p>
<pre><code>PS C:\Users\xxxxx\Documents\demo-plugin> npm run build
demo-plu... | 19,950 | 10,506,473 | 2023-06-15 08:23:35 | 59,355,825 | 12 | 2019-12-16 11:34:47 | 7,356,355 | 2019-12-16 11:34:47 | https://stackoverflow.com/q/59354806 | https://stackoverflow.com/a/59355825 | <p>In Windows you should use</p>
<pre><code>rd /s /q dist
</code></pre>
<p><code>rm</code> is available in Linux and Mac.</p>
<p>Reference: </p>
<ul>
<li><a href="https://stackoverflow.com/questions/41451884/how-to-run-rm-command-on-windows-10/41452647">How to run rm command on windows 10?</a></li>
</ul>
| <p>In Windows you should use</p> <pre><code>rd /s /q dist </code></pre> <p><code>rm</code> is available in Linux and Mac.</p> <p>Reference: </p> <ul> <li><a href="https://stackoverflow.com/questions/41451884/how-to-run-rm-command-on-windows-10/41452647">How to run rm command on windows 10?</a></li> </ul> | 526, 61387, 100064, 132327 | capacitor, ionic-framework, npm, powershell | <h1>'rm' is not recognized as an internal or external command when trying publish a capacitor plugin</h1>
<p>I am trying to publish a capacitor plugin. According to the error it is not able to recognize <code>rm</code>. I am using Window's Powershell (VC Code)
The following error is being generated in the powershell w... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,888 | bash | # 'rm' is not recognized as an internal or external command when trying publish a capacitor plugin
I am trying to publish a capacitor plugin. According to the error it is not able to recognize `rm`. I am using Window's Powershell (VC Code)
The following error is being generated in the powershell when npm publish in ru... | In Windows you should use
```
rd /s /q dist
```
`rm` is available in Linux and Mac.
Reference:
- [How to run rm command on windows 10?](https://stackoverflow.com/questions/41451884/how-to-run-rm-command-on-windows-10/41452647) |
55729985 | Change Ubuntu terminal to look like Git-bash of Window | 8 | 2019-04-17 14:30:49 | <p>Is there a way to change/replace the default Ubuntu terminal with Git-bash(look and behavior) of Window? Basically, the terminal should display all the necessary information related with current branch/repo, just like it does in Window. </p>
<p>I am using VS Code and had configured Git-Bash with it for <a href="htt... | 5,169 | 7,666,504 | 2019-04-22 09:41:26 | 55,792,362 | 12 | 2019-04-22 09:41:26 | 7,666,504 | 2019-04-22 09:41:26 | https://stackoverflow.com/q/55729985 | https://stackoverflow.com/a/55792362 | <p>After <strong>@kostix</strong> suggestion, I searched the internet with proper key-words and found <a href="https://askubuntu.com/questions/730754/how-do-i-show-the-git-branch-with-colours-in-bash-prompt">this question thread</a> and then finally to <a href="https://coderwall.com/p/fasnya/add-git-branch-name-to-bash... | <p>After <strong>@kostix</strong> suggestion, I searched the internet with proper key-words and found <a href="https://askubuntu.com/questions/730754/how-do-i-show-the-git-branch-with-colours-in-bash-prompt">this question thread</a> and then finally to <a href="https://coderwall.com/p/fasnya/add-git-branch-name-to-bash... | 119, 391, 61874, 132343 | git, git-bash, terminal, ubuntu-18.04 | <h1>Change Ubuntu terminal to look like Git-bash of Window</h1>
<p>Is there a way to change/replace the default Ubuntu terminal with Git-bash(look and behavior) of Window? Basically, the terminal should display all the necessary information related with current branch/repo, just like it does in Window. </p>
<p>I am us... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,890 | bash | # Change Ubuntu terminal to look like Git-bash of Window
Is there a way to change/replace the default Ubuntu terminal with Git-bash(look and behavior) of Window? Basically, the terminal should display all the necessary information related with current branch/repo, just like it does in Window.
I am using VS Code and h... | After **@kostix** suggestion, I searched the internet with proper key-words and found [this question thread](https://askubuntu.com/questions/730754/how-do-i-show-the-git-branch-with-colours-in-bash-prompt) and then finally to [this page](https://coderwall.com/p/fasnya/add-git-branch-name-to-bash-prompt). After trying a... |
37045169 | Powershell Scheduled Task "Delay task for" option | 8 | 2016-05-05 07:42:04 | <p>I need to create Task Schedule with "Delay task for" option for 1 min. I can see PowerShell cmdlet New-ScheduledTaskTrigger has an option -RandomDelay, but I don't think it's valid. I can't see another option in Documentation either (<a href="https://technet.microsoft.com/en-us/library/jj649816(v=wps.630).aspx" rel=... | 20,565 | 6,294,429 | 2022-09-10 19:41:10 | 50,759,453 | 12 | 2018-06-08 11:16:16 | 9,913,725 | 2018-06-08 11:28:18 | https://stackoverflow.com/q/37045169 | https://stackoverflow.com/a/50759453 | <p>Just add this part:</p>
<pre><code>$T.Delay = 'PT1M'
</code></pre>
| <p>Just add this part:</p> <pre><code>$T.Delay = 'PT1M' </code></pre> | 526 | powershell | <h1>Powershell Scheduled Task "Delay task for" option</h1>
<p>I need to create Task Schedule with "Delay task for" option for 1 min. I can see PowerShell cmdlet New-ScheduledTaskTrigger has an option -RandomDelay, but I don't think it's valid. I can't see another option in Documentation either (<a href="https://technet... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,891 | bash | # Powershell Scheduled Task "Delay task for" option
I need to create Task Schedule with "Delay task for" option for 1 min. I can see PowerShell cmdlet New-ScheduledTaskTrigger has an option -RandomDelay, but I don't think it's valid. I can't see another option in Documentation either (<https://technet.microsoft.com/en... | Just add this part:
```
$T.Delay = 'PT1M'
``` |
48998395 | The best way to check that we have require version software in bash script | 8 | 2018-02-26 22:52:00 | <p>Which the best way to check that we have minimum require version software in bash script.
E.g. git 2.16.2</p>
| 3,176 | 8,600,145 | 2022-09-21 17:54:17 | 48,998,537 | 12 | 2018-02-26 23:06:03 | 3,030,305 | 2022-08-23 21:27:14 | https://stackoverflow.com/q/48998395 | https://stackoverflow.com/a/48998537 | <p><code>git</code> provides its version info like this:</p>
<pre><code>$ git --version
git version 2.11.0
</code></pre>
<p>GNU <code>sort</code> understands version numbers and can sort them:</p>
<pre><code>$ (echo min version 2.16.3; git --version) | sort -Vk3
git version 2.11.0
min version 2.16.3
$ (echo min version... | <p><code>git</code> provides its version info like this:</p> <pre><code>$ git --version git version 2.11.0 </code></pre> <p>GNU <code>sort</code> understands version numbers and can sort them:</p> <pre><code>$ (echo min version 2.16.3; git --version) | sort -Vk3 git version 2.11.0 min version 2.16.3 $ (echo min version... | 387 | bash | <h1>The best way to check that we have require version software in bash script</h1>
<p>Which the best way to check that we have minimum require version software in bash script.
E.g. git 2.16.2</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,892 | bash | # The best way to check that we have require version software in bash script
Which the best way to check that we have minimum require version software in bash script.
E.g. git 2.16.2 | `git` provides its version info like this:
```
$ git --version
git version 2.11.0
```
GNU `sort` understands version numbers and can sort them:
```
$ (echo min version 2.16.3; git --version) | sort -Vk3
git version 2.11.0
min version 2.16.3
$ (echo min version 2.9.3; git --version) | sort -Vk3
min version 2.9.3
git ... |
47692263 | How to do a specific action on the first iteration of a while loop in a bash script | 8 | 2017-12-07 09:57:21 | <p>I need to make a script do a specific action on first loop iteration.</p>
<pre><code>for file in /path/to/files/*; do
echo "${file}"
done
</code></pre>
<p>I want this output:</p>
<pre><code>First run: file1
file2
file3
file4
...
</code></pre>
| 5,774 | 9,053,600 | 2024-07-29 09:45:30 | 47,693,363 | 12 | 2017-12-07 10:51:20 | 874,188 | 2024-07-29 09:45:30 | https://stackoverflow.com/q/47692263 | https://stackoverflow.com/a/47693363 | <p>A very common arrangement is to change a variable inside the loop.</p>
<pre><code>noise='First run: '
for file in /path/to/files/*; do
echo "$noise$file"
noise=''
done
</code></pre>
<p>Here's a variation using a <a href="https://www.gnu.org/s/bash/manual/html_node/Shell-Parameter-Expansion.html" re... | <p>A very common arrangement is to change a variable inside the loop.</p> <pre><code>noise='First run: ' for file in /path/to/files/*; do echo "$noise$file" noise='' done </code></pre> <p>Here's a variation using a <a href="https://www.gnu.org/s/bash/manual/html_node/Shell-Parameter-Expansion.html" re... | 58, 387 | bash, linux | <h1>How to do a specific action on the first iteration of a while loop in a bash script</h1>
<p>I need to make a script do a specific action on first loop iteration.</p>
<pre><code>for file in /path/to/files/*; do
echo "${file}"
done
</code></pre>
<p>I want this output:</p>
<pre><code>First run: file1
file2
file... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,893 | bash | # How to do a specific action on the first iteration of a while loop in a bash script
I need to make a script do a specific action on first loop iteration.
```
for file in /path/to/files/*; do
echo "${file}"
done
```
I want this output:
```
First run: file1
file2
file3
file4
...
``` | A very common arrangement is to change a variable inside the loop.
```
noise='First run: '
for file in /path/to/files/*; do
echo "$noise$file"
noise=''
done
```
Here's a variation using a [parameter expansion](https://www.gnu.org/s/bash/manual/html_node/Shell-Parameter-Expansion.html):
```
first="trve"
for f... |
47228304 | How do we get a drive by its label in PowerShell 5.0? | 8 | 2017-11-10 17:36:38 | <p>I have an <code>autorun.inf</code> file with the following contents on my external hard drive:</p>
<pre><code>[Autorun]
Label=MasterSword
</code></pre>
<p>This labels my external hard drive once it's plugged in as, <code>MasterSword</code>. I want to store a few scripts on it and include them in my <code>$profile<... | 16,423 | 3,605,159 | 2020-03-30 22:01:47 | 47,228,643 | 12 | 2017-11-10 18:00:30 | 3,605,159 | 2020-03-30 22:01:47 | https://stackoverflow.com/q/47228304 | https://stackoverflow.com/a/47228643 | <p>I did a little more research and came up with this little snippet:</p>
<p>To answer #1:</p>
<pre><code>$scriptDrive = Get-Volume -FileSystemLabel MasterSword
</code></pre>
<p>To answer #2:</p>
<pre><code>$scriptDriveLetter = $scriptDrive.DriveLetter
</code></pre>
<p>And together, they would be:</p>
<pre><code>... | <p>I did a little more research and came up with this little snippet:</p> <p>To answer #1:</p> <pre><code>$scriptDrive = Get-Volume -FileSystemLabel MasterSword </code></pre> <p>To answer #2:</p> <pre><code>$scriptDriveLetter = $scriptDrive.DriveLetter </code></pre> <p>And together, they would be:</p> <pre><code>... | 64, 526, 108010 | powershell, powershell-5.0, windows | <h1>How do we get a drive by its label in PowerShell 5.0?</h1>
<p>I have an <code>autorun.inf</code> file with the following contents on my external hard drive:</p>
<pre><code>[Autorun]
Label=MasterSword
</code></pre>
<p>This labels my external hard drive once it's plugged in as, <code>MasterSword</code>. I want to s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,894 | bash | # How do we get a drive by its label in PowerShell 5.0?
I have an `autorun.inf` file with the following contents on my external hard drive:
```
[Autorun]
Label=MasterSword
```
This labels my external hard drive once it's plugged in as, `MasterSword`. I want to store a few scripts on it and include them in my `$profi... | I did a little more research and came up with this little snippet:
To answer #1:
```
$scriptDrive = Get-Volume -FileSystemLabel MasterSword
```
To answer #2:
```
$scriptDriveLetter = $scriptDrive.DriveLetter
```
And together, they would be:
```
$scriptDrive = Get-Volume -FileSystemLabel MasterSword
$scriptDriveLe... |
45481962 | Adding to a datetime | 8 | 2017-08-03 10:43:53 | <p>Forgive me if it's already been asked here somewhere, but I couldn't find it, but here goes.</p>
<p>In a log file I have, there's a time at which the values were logged and the time is written in <code>HH:mm:ss</code>.</p>
<p>I need to parse multiple rows of that file, and so far the only way I can do that it adds... | 13,486 | 4,550,628 | 2017-08-03 13:56:24 | 45,482,262 | 12 | 2017-08-03 10:58:59 | 1,630,171 | 2017-08-03 13:56:24 | https://stackoverflow.com/q/45481962 | https://stackoverflow.com/a/45482262 | <p><a href="https://msdn.microsoft.com/en-us/library/system.datetime.aspx" rel="noreferrer"><code>DateTime</code></a> objects have methods to add seconds, minutes, hours, days, etc.</p>
<pre><code>$a.AddMinutes(5)
</code></pre>
<p>The same methods can be used to subtract time from a timestamp by adding a negative val... | <p><a href="https://msdn.microsoft.com/en-us/library/system.datetime.aspx" rel="noreferrer"><code>DateTime</code></a> objects have methods to add seconds, minutes, hours, days, etc.</p> <pre><code>$a.AddMinutes(5) </code></pre> <p>The same methods can be used to subtract time from a timestamp by adding a negative val... | 526, 1263 | datetime, powershell | <h1>Adding to a datetime</h1>
<p>Forgive me if it's already been asked here somewhere, but I couldn't find it, but here goes.</p>
<p>In a log file I have, there's a time at which the values were logged and the time is written in <code>HH:mm:ss</code>.</p>
<p>I need to parse multiple rows of that file, and so far the ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,895 | bash | # Adding to a datetime
Forgive me if it's already been asked here somewhere, but I couldn't find it, but here goes.
In a log file I have, there's a time at which the values were logged and the time is written in `HH:mm:ss`.
I need to parse multiple rows of that file, and so far the only way I can do that it adds a f... | [`DateTime`](https://msdn.microsoft.com/en-us/library/system.datetime.aspx) objects have methods to add seconds, minutes, hours, days, etc.
```
$a.AddMinutes(5)
```
The same methods can be used to subtract time from a timestamp by adding a negative value:
```
$a.AddMinutes(-5)
```
The output format can be defined e... |
44871264 | How can I measure the window height (number of lines) in powershell? | 8 | 2017-07-02 13:21:44 | <p>The maximum number of lines in my environment is 47.</p>
<p>Can I measure this value programmatically?</p>
| 3,169 | 2,049,426 | 2022-07-20 20:15:54 | 44,872,079 | 12 | 2017-07-02 14:52:26 | 45,375 | 2022-06-22 13:11:08 | https://stackoverflow.com/q/44871264 | https://stackoverflow.com/a/44872079 |
<p>To complement <a href="https://stackoverflow.com/a/44871337/45375">Christian.K's helpful answer</a>:</p>
<ul>
<li><p>A simpler and slightly more efficient method for obtaining the host object is to <strong>use the <code>$Host</code> <a href="https://msdn.microsoft.com/en-us/powershell/reference/5.1/microsoft.powers... | <p>To complement <a href="https://stackoverflow.com/a/44871337/45375">Christian.K's helpful answer</a>:</p> <ul> <li><p>A simpler and slightly more efficient method for obtaining the host object is to <strong>use the <code>$Host</code> <a href="https://msdn.microsoft.com/en-us/powershell/reference/5.1/microsoft.powers... | 526, 22864, 40232 | powershell, powershell-ise, windows-console | <h1>How can I measure the window height (number of lines) in powershell?</h1>
<p>The maximum number of lines in my environment is 47.</p>
<p>Can I measure this value programmatically?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,896 | bash | # How can I measure the window height (number of lines) in powershell?
The maximum number of lines in my environment is 47.
Can I measure this value programmatically? | To complement [Christian.K's helpful answer](https://stackoverflow.com/a/44871337/45375):
- A simpler and slightly more efficient method for obtaining the host object is to **use the `$Host` [automatic variable](https://msdn.microsoft.com/en-us/powershell/reference/5.1/microsoft.powershell.core/about/about_automatic_v... |
44524643 | What does grep -Po '...\K...' do? How else can that effect be achieved? | 8 | 2017-06-13 14:39:57 | <p>I have this script <code>script.sh</code>:</p>
<pre><code>#!/bin/bash
file_path=$1
result=$(grep -Po 'value="\K.*?(?=")' $file_path)
echo $result
</code></pre>
<p>and this file <code>text.txt</code>:</p>
<pre><code>value="a"
value="b"
value="c"
</code></pre>
<p>When I run <code>./script.sh /file/directory/text.t... | 14,248 | 7,971,026 | 2017-06-13 15:31:36 | 44,524,845 | 12 | 2017-06-13 14:48:00 | 14,122 | 2017-06-13 15:31:36 | https://stackoverflow.com/q/44524643 | https://stackoverflow.com/a/44524845 | <ul>
<li><code>grep -P</code> enables PCRE syntax. (This is a non-standard extension -- not even all builds of GNU grep support it, as it depends on the optional libpcre library, and whether to link this in is a compile-time option).</li>
<li><code>grep -o</code> emits only matched text, and not the entire line contain... | <ul> <li><code>grep -P</code> enables PCRE syntax. (This is a non-standard extension -- not even all builds of GNU grep support it, as it depends on the optional libpcre library, and whether to link this in is a compile-time option).</li> <li><code>grep -o</code> emits only matched text, and not the entire line contain... | 58, 387, 390 | bash, linux, shell | <h1>What does grep -Po '...\K...' do? How else can that effect be achieved?</h1>
<p>I have this script <code>script.sh</code>:</p>
<pre><code>#!/bin/bash
file_path=$1
result=$(grep -Po 'value="\K.*?(?=")' $file_path)
echo $result
</code></pre>
<p>and this file <code>text.txt</code>:</p>
<pre><code>value="a"
value="b... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,897 | bash | # What does grep -Po '...\K...' do? How else can that effect be achieved?
I have this script `script.sh`:
```
#!/bin/bash
file_path=$1
result=$(grep -Po 'value="\K.*?(?=")' $file_path)
echo $result
```
and this file `text.txt`:
```
value="a"
value="b"
value="c"
```
When I run `./script.sh /file/directory/text.txt`... | - `grep -P` enables PCRE syntax. (This is a non-standard extension -- not even all builds of GNU grep support it, as it depends on the optional libpcre library, and whether to link this in is a compile-time option).
- `grep -o` emits only matched text, and not the entire line containing said text, in output. (This too ... |
44099564 | multi-line commands in Julia | 8 | 2017-05-21 17:05:02 | <p>You can run commands in Julia using the following syntax:</p>
<pre><code>run(`echo 123`)
</code></pre>
<p>How can I easily run a long command with multiple arguments? It is convenient to split it up over multiple lines for readability purposes. Can I do this in Julia?</p>
| 14,416 | 130,111 | 2017-11-12 15:55:15 | 44,099,758 | 12 | 2017-05-21 17:26:10 | 6,172,490 | 2017-05-21 17:26:10 | https://stackoverflow.com/q/44099564 | https://stackoverflow.com/a/44099758 | <p>Julia automatically continues parsing in the next line if the current expression is incomplete, e.g., </p>
<pre><code>julia> 1 +
2
3
</code></pre>
<p>Therefore, you can simply do</p>
<pre><code>julia> run(`
echo
123
345
678
`)
123 345 678
</code></p... | <p>Julia automatically continues parsing in the next line if the current expression is incomplete, e.g., </p> <pre><code>julia> 1 + 2 3 </code></pre> <p>Therefore, you can simply do</p> <pre><code>julia> run(` echo 123 345 678 `) 123 345 678 </code></p... | 390, 77929 | julia, shell | <h1>multi-line commands in Julia</h1>
<p>You can run commands in Julia using the following syntax:</p>
<pre><code>run(`echo 123`)
</code></pre>
<p>How can I easily run a long command with multiple arguments? It is convenient to split it up over multiple lines for readability purposes. Can I do this in Julia?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,898 | bash | # multi-line commands in Julia
You can run commands in Julia using the following syntax:
```
run(`echo 123`)
```
How can I easily run a long command with multiple arguments? It is convenient to split it up over multiple lines for readability purposes. Can I do this in Julia? | Julia automatically continues parsing in the next line if the current expression is incomplete, e.g.,
```
julia> 1 +
2
3
```
Therefore, you can simply do
```
julia> run(`
echo
123
345
678
`)
123 345 678
``` |
38584428 | Security Warning when running scripts - Unblock-File not unblocking file | 8 | 2016-07-26 08:11:32 | <p>I suddenly started to recceive this warning when running any script on my computer:</p>
<blockquote>
<p>Run only scripts that you trust. While scripts from the internet can be useful, this script can potentially harm your computer...</p>
</blockquote>
<p>Screenshot:</p>
<p><a href="https://i.sstatic.net/zP1UC.p... | 28,505 | 6,135,048 | 2024-09-26 17:49:27 | 43,395,217 | 12 | 2017-04-13 14:38:46 | 4,102,857 | 2018-09-26 16:06:52 | https://stackoverflow.com/q/38584428 | https://stackoverflow.com/a/43395217 | <p>After searching i found someone with similar issues and it was explained that Classic UNC paths will work without prompting to unblock the file:</p>
<pre><code>\\Servername\Path...
</code></pre>
<p>However FQDN paths are not seen as safe by default and will prompt:</p>
<pre><code>\\Servername.foo.local\Path...
</... | <p>After searching i found someone with similar issues and it was explained that Classic UNC paths will work without prompting to unblock the file:</p> <pre><code>\\Servername\Path... </code></pre> <p>However FQDN paths are not seen as safe by default and will prompt:</p> <pre><code>\\Servername.foo.local\Path... </... | 136, 526, 22864 | powershell, powershell-ise, security | <h1>Security Warning when running scripts - Unblock-File not unblocking file</h1>
<p>I suddenly started to recceive this warning when running any script on my computer:</p>
<blockquote>
<p>Run only scripts that you trust. While scripts from the internet can be useful, this script can potentially harm your computer..... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,899 | bash | # Security Warning when running scripts - Unblock-File not unblocking file
I suddenly started to recceive this warning when running any script on my computer:
> Run only scripts that you trust. While scripts from the internet can be useful, this script can potentially harm your computer...
Screenshot:
[, and specifically the subject of word splitting.
This script, called "args", helps demonstrate word splitting examples:
```
#!/usr/bin/env bash
printf "%d args:" $#
printf... | You can read more about word splitting [here](https://www.gnu.org/software/bash/manual/html_node/Word-Splitting.html).
> The shell scans the results of parameter expansion, command substitution,
> and arithmetic expansion that did not occur within double quotes for word splitting.
When you pass the bare string `one:t... |
41578517 | Unary "Not" or bit-flip operator in PowerShell? | 8 | 2017-01-10 21:13:24 | <p>I have a decimal value 163 that I need to do a unary "not" operation on. In C++ and Java, this would look like <code>~(163)</code>. Essentially, I want every bit to flip.</p>
<p>Is there a way to do this in PowerShell using a unary operator or, if needed, a subroutine? I would also need this to flip all the bits of... | 2,650 | 4,081,647 | 2022-06-07 23:01:34 | 41,578,654 | 12 | 2017-01-10 21:22:35 | 3,905,079 | 2022-06-07 23:01:34 | https://stackoverflow.com/q/41578517 | https://stackoverflow.com/a/41578654 | <p>As Bill_Stewart commented, <a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_arithmetic_operators?view=powershell-7.2#bitwise-operators" rel="nofollow noreferrer">the <code>-bnot</code> (binary not or bitwise not) operator</a> does what you want. It works in PowerShel... | <p>As Bill_Stewart commented, <a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_arithmetic_operators?view=powershell-7.2#bitwise-operators" rel="nofollow noreferrer">the <code>-bnot</code> (binary not or bitwise not) operator</a> does what you want. It works in PowerShel... | 526, 4088, 14515, 24067 | bit, bit-manipulation, powershell, powershell-2.0 | <h1>Unary "Not" or bit-flip operator in PowerShell?</h1>
<p>I have a decimal value 163 that I need to do a unary "not" operation on. In C++ and Java, this would look like <code>~(163)</code>. Essentially, I want every bit to flip.</p>
<p>Is there a way to do this in PowerShell using a unary operator or, if needed, a s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,901 | bash | # Unary "Not" or bit-flip operator in PowerShell?
I have a decimal value 163 that I need to do a unary "not" operation on. In C++ and Java, this would look like `~(163)`. Essentially, I want every bit to flip.
Is there a way to do this in PowerShell using a unary operator or, if needed, a subroutine? I would also nee... | As Bill_Stewart commented, [the `-bnot` (binary not or bitwise not) operator](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_arithmetic_operators?view=powershell-7.2#bitwise-operators) does what you want. It works in PowerShell 2.0.
Just be aware that PowerShell's default int... |
37995856 | Passing PSRemotingJob Object as Parameter in Powershell 4.0 | 8 | 2016-06-23 15:26:02 | <p>I'm writing a Powershell Cmdlet for which I need to pass in a <code>PSRemotingJob</code>
object as a parameter. The <a href="https://stackoverflow.com/help/mcve">MCVE</a> follows:</p>
<pre><code>function My-Cmdlet {
[CmdletBinding()]
Param(
[Parameter(Position=0,
Mandatory=$true,... | 2,158 | 1,843,248 | 2016-10-14 17:32:52 | 40,048,930 | 12 | 2016-10-14 17:32:52 | 4,003,407 | 2016-10-14 17:32:52 | https://stackoverflow.com/q/37995856 | https://stackoverflow.com/a/40048930 | <p><code>System.Management.Automation.PSRemotingJob</code> is not public type and thus can not be expressed in PowerShell type syntax. But you can use its base public type instead: <code>[System.Management.Automation.Job]</code>.</p>
| <p><code>System.Management.Automation.PSRemotingJob</code> is not public type and thus can not be expressed in PowerShell type syntax. But you can use its base public type instead: <code>[System.Management.Automation.Job]</code>.</p> | 526 | powershell | <h1>Passing PSRemotingJob Object as Parameter in Powershell 4.0</h1>
<p>I'm writing a Powershell Cmdlet for which I need to pass in a <code>PSRemotingJob</code>
object as a parameter. The <a href="https://stackoverflow.com/help/mcve">MCVE</a> follows:</p>
<pre><code>function My-Cmdlet {
[CmdletBinding()]
Para... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,902 | bash | # Passing PSRemotingJob Object as Parameter in Powershell 4.0
I'm writing a Powershell Cmdlet for which I need to pass in a `PSRemotingJob`
object as a parameter. The [MCVE](https://stackoverflow.com/help/mcve) follows:
```
function My-Cmdlet {
[CmdletBinding()]
Param(
[Parameter(Position=0,
... | `System.Management.Automation.PSRemotingJob` is not public type and thus can not be expressed in PowerShell type syntax. But you can use its base public type instead: `[System.Management.Automation.Job]`. |
38959114 | Unshift array element in Bash script | 8 | 2016-08-15 16:33:49 | <p>I would like to add elements to the beginning of an array instead of to the end. Is this possible in Bash?</p>
| 5,411 | 5,743,764 | 2024-04-19 18:21:05 | 38,959,226 | 12 | 2016-08-15 16:41:20 | 2,302,862 | 2016-08-15 18:00:16 | https://stackoverflow.com/q/38959114 | https://stackoverflow.com/a/38959226 | <p>If your array is contiguous, you can use the <code>"${array[@]}"</code> syntax to construct a new array:</p>
<pre><code>array=('a' 'b' 'c');
echo "${array[@]}"; # prints: a b c
array=('d' "${array[@]}");
echo "${array[@]}"; # prints: d a b c
</code></pre>
<p>As <a href="https://stackoverflow.com/questions/38959114... | <p>If your array is contiguous, you can use the <code>"${array[@]}"</code> syntax to construct a new array:</p> <pre><code>array=('a' 'b' 'c'); echo "${array[@]}"; # prints: a b c array=('d' "${array[@]}"); echo "${array[@]}"; # prints: d a b c </code></pre> <p>As <a href="https://stackoverflow.com/questions/38959114... | 114, 387, 390 | arrays, bash, shell | <h1>Unshift array element in Bash script</h1>
<p>I would like to add elements to the beginning of an array instead of to the end. Is this possible in Bash?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,903 | bash | # Unshift array element in Bash script
I would like to add elements to the beginning of an array instead of to the end. Is this possible in Bash? | If your array is contiguous, you can use the `"${array[@]}"` syntax to construct a new array:
```
array=('a' 'b' 'c');
echo "${array[@]}"; # prints: a b c
array=('d' "${array[@]}");
echo "${array[@]}"; # prints: d a b c
```
As [chepner mentions](https://stackoverflow.com/questions/38959114/unshift-array-element-in-ba... |
38843212 | how to use echo with find in bash? | 8 | 2016-08-09 06:06:31 | <p>I have 10 files. I can list them with <code>find . -type f</code> and what I am trying to achieve is sending a message to all 10 files after finding them with find command. </p>
<p>What I have tried, <code>find . -type f -exec echo "This file found" >> {} \;</code></p>
<p>May be logically I am right but its ... | 16,214 | 1,293,013 | 2016-08-09 06:16:55 | 38,843,259 | 12 | 2016-08-09 06:09:51 | 3,789,550 | 2016-08-09 06:15:19 | https://stackoverflow.com/q/38843212 | https://stackoverflow.com/a/38843259 | <p>The shell redirection, <code>>></code> is being done at first, a file named <code>{}</code> is being created before even the <code>find</code> starts and the strings (the number of files are in there) are being written to the file <code>{}</code>.</p>
<p>You need:</p>
<pre><code>find . -type f -exec bash -c ... | <p>The shell redirection, <code>>></code> is being done at first, a file named <code>{}</code> is being created before even the <code>find</code> starts and the strings (the number of files are in there) are being written to the file <code>{}</code>.</p> <p>You need:</p> <pre><code>find . -type f -exec bash -c ... | 387, 10193 | bash, find | <h1>how to use echo with find in bash?</h1>
<p>I have 10 files. I can list them with <code>find . -type f</code> and what I am trying to achieve is sending a message to all 10 files after finding them with find command. </p>
<p>What I have tried, <code>find . -type f -exec echo "This file found" >> {} \;</code><... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,904 | bash | # how to use echo with find in bash?
I have 10 files. I can list them with `find . -type f` and what I am trying to achieve is sending a message to all 10 files after finding them with find command.
What I have tried, `find . -type f -exec echo "This file found" >> {} \;`
May be logically I am right but its not work... | The shell redirection, `>>` is being done at first, a file named `{}` is being created before even the `find` starts and the strings (the number of files are in there) are being written to the file `{}`.
You need:
```
find . -type f -exec bash -c 'echo "This file found" >>"$1"' _ {} \;
``` |
38403090 | Difference between x | y and y <(x) in bash? | 8 | 2016-07-15 18:40:18 | <p>Is there a difference between <code>command1 | command2</code> and <code>command2 <(command1)</code>?</p>
<p>For example, <code>git diff | more</code> vs <code>more <(git diff)</code></p>
<p>My understanding is that both take the stdout of <code>command2</code> and pipe it to the stdin of <code>command1</cod... | 150 | 2,874,789 | 2016-07-16 15:19:14 | 38,403,153 | 12 | 2016-07-15 18:44:40 | 797,049 | 2016-07-16 15:19:14 | https://stackoverflow.com/q/38403090 | https://stackoverflow.com/a/38403153 | <p>The main difference is that <code><(</code>...<code>)</code>, called "process substitution", is translated by the shell into a filename that is passed as a regular argument to the command; it doesn't send anything to the command's standard input. This means that it can't be used directly with commands such as <co... | <p>The main difference is that <code><(</code>...<code>)</code>, called "process substitution", is translated by the shell into a filename that is passed as a regular argument to the command; it doesn't send anything to the command's standard input. This means that it can't be used directly with commands such as <co... | 387, 5813 | bash, pipe | <h1>Difference between x | y and y <(x) in bash?</h1>
<p>Is there a difference between <code>command1 | command2</code> and <code>command2 <(command1)</code>?</p>
<p>For example, <code>git diff | more</code> vs <code>more <(git diff)</code></p>
<p>My understanding is that both take the stdout of <code>command2<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,905 | bash | # Difference between x | y and y <(x) in bash?
Is there a difference between `command1 | command2` and `command2 <(command1)`?
For example, `git diff | more` vs `more <(git diff)`
My understanding is that both take the stdout of `command2` and pipe it to the stdin of `command1`. | The main difference is that `<(`...`)`, called "process substitution", is translated by the shell into a filename that is passed as a regular argument to the command; it doesn't send anything to the command's standard input. This means that it can't be used directly with commands such as `tr` which don't take a filenam... |
37954868 | How can I split my screen in 3 using tmux from a bash script | 8 | 2016-06-21 21:26:43 | <p>I'm writing a bash script that splits the screen in 3 and runs a command on each pane.</p>
<p>I basically want to run the bash script and the bash script is supposed to split my screen in 3, and run top in a pane, htop in the other pane and a perl re.pl in the third pane for example</p>
<p>any help or pointers are... | 11,575 | 2,348,668 | 2024-04-02 02:59:55 | 37,979,685 | 12 | 2016-06-22 23:10:33 | 1,126,841 | 2016-06-22 23:10:33 | https://stackoverflow.com/q/37954868 | https://stackoverflow.com/a/37979685 | <p>The direct way to do this is to create a detached session, create the panes, <em>then</em> attach to the session.</p>
<pre><code># -d says not to attach to the session yet. top runs in the first
# window
tmux new-session -d top
# In the most recently created session, split the (only) window
# and run htop in the ne... | <p>The direct way to do this is to create a detached session, create the panes, <em>then</em> attach to the session.</p> <pre><code># -d says not to attach to the session yet. top runs in the first # window tmux new-session -d top # In the most recently created session, split the (only) window # and run htop in the ne... | 58, 387, 60238 | bash, linux, tmux | <h1>How can I split my screen in 3 using tmux from a bash script</h1>
<p>I'm writing a bash script that splits the screen in 3 and runs a command on each pane.</p>
<p>I basically want to run the bash script and the bash script is supposed to split my screen in 3, and run top in a pane, htop in the other pane and a per... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,906 | bash | # How can I split my screen in 3 using tmux from a bash script
I'm writing a bash script that splits the screen in 3 and runs a command on each pane.
I basically want to run the bash script and the bash script is supposed to split my screen in 3, and run top in a pane, htop in the other pane and a perl re.pl in the t... | The direct way to do this is to create a detached session, create the panes, *then* attach to the session.
```
# -d says not to attach to the session yet. top runs in the first
# window
tmux new-session -d top
# In the most recently created session, split the (only) window
# and run htop in the new pane
tmux split-win... |
37367841 | bash: How to add space in string? | 8 | 2016-05-21 20:48:59 | <p>I have a string like this:</p>
<pre><code>string="aaa-bbb"
</code></pre>
<p>But I want to add space before char '-', so I want this:</p>
<pre><code>aaa -bbb
</code></pre>
<p>I tried a lot of things, but I can't add space there. I tried with <code>echo $string | tr '-' ' -'</code>, and some other stuff, but it di... | 64,559 | 6,244,712 | 2023-01-05 20:59:11 | 37,367,908 | 12 | 2016-05-21 20:55:41 | 1,426,891 | 2016-05-22 03:44:41 | https://stackoverflow.com/q/37367841 | https://stackoverflow.com/a/37367908 | <p>No need to call <code>sed</code>, use <a href="http://wiki.bash-hackers.org/syntax/pe#search_and_replace" rel="noreferrer">string substitution</a> native in BASH:</p>
<pre><code>$ foo="abc-def-ghi"
$ echo "${foo//-/ -}"
abc -def -ghi
</code></pre>
<p>Note the <em>two slashes</em> after the variable name: the first... | <p>No need to call <code>sed</code>, use <a href="http://wiki.bash-hackers.org/syntax/pe#search_and_replace" rel="noreferrer">string substitution</a> native in BASH:</p> <pre><code>$ foo="abc-def-ghi" $ echo "${foo//-/ -}" abc -def -ghi </code></pre> <p>Note the <em>two slashes</em> after the variable name: the first... | 139, 387, 5162 | bash, spaces, string | <h1>bash: How to add space in string?</h1>
<p>I have a string like this:</p>
<pre><code>string="aaa-bbb"
</code></pre>
<p>But I want to add space before char '-', so I want this:</p>
<pre><code>aaa -bbb
</code></pre>
<p>I tried a lot of things, but I can't add space there. I tried with <code>echo $string | tr '-' '... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,907 | bash | # bash: How to add space in string?
I have a string like this:
```
string="aaa-bbb"
```
But I want to add space before char '-', so I want this:
```
aaa -bbb
```
I tried a lot of things, but I can't add space there. I tried with `echo $string | tr '-' ' -'`, and some other stuff, but it didn't work...
I have Linu... | No need to call `sed`, use [string substitution](http://wiki.bash-hackers.org/syntax/pe#search_and_replace) native in BASH:
```
$ foo="abc-def-ghi"
$ echo "${foo//-/ -}"
abc -def -ghi
```
Note the *two slashes* after the variable name: the first slash replaces the first occurrence, where two slashes replace every occ... |
37094195 | Combine several files, with a separator, into one file | 8 | 2016-05-07 22:05:21 | <p>I have several (~300,000) files of individual JSON objects that I want to combine into a single file that is a JSON array. How can I do this on linux assuming they are all in the location "~/data_files"?</p>
<p><strong>FileA</strong></p>
<pre><code>{
name: "Test",
age: 23
}
</code></pre>
<p><strong>FileB</st... | 4,307 | 1,001,938 | 2020-01-23 05:56:10 | 37,094,923 | 12 | 2016-05-08 00:10:46 | 6,170,930 | 2019-05-19 13:03:11 | https://stackoverflow.com/q/37094195 | https://stackoverflow.com/a/37094923 | <p>Since you seem a little new to unix I'll try to give you a solution that is simple and doesn't introduce too many new concepts. I'll leave clever and novel to the other posters. This solution will be <em>very</em> efficient since all I'm doing is streaming files into files.<br></p>
<p>To start with we will create a... | <p>Since you seem a little new to unix I'll try to give you a solution that is simple and doesn't introduce too many new concepts. I'll leave clever and novel to the other posters. This solution will be <em>very</em> efficient since all I'm doing is streaming files into files.<br></p> <p>To start with we will create a... | 58, 390, 1508, 22820 | cat, json, linux, shell | <h1>Combine several files, with a separator, into one file</h1>
<p>I have several (~300,000) files of individual JSON objects that I want to combine into a single file that is a JSON array. How can I do this on linux assuming they are all in the location "~/data_files"?</p>
<p><strong>FileA</strong></p>
<pre><code>{... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,908 | bash | # Combine several files, with a separator, into one file
I have several (~300,000) files of individual JSON objects that I want to combine into a single file that is a JSON array. How can I do this on linux assuming they are all in the location "~/data_files"?
**FileA**
```
{
name: "Test",
age: 23
}
```
**FileB... | Since you seem a little new to unix I'll try to give you a solution that is simple and doesn't introduce too many new concepts. I'll leave clever and novel to the other posters. This solution will be *very* efficient since all I'm doing is streaming files into files.
To start with we will create a new file in our home... |
34912289 | Case statement with extglob | 8 | 2016-01-20 22:59:49 | <p>With <em>extglob</em> on, I want to match a variable against </p>
<pre><code>*( )x*
</code></pre>
<p>(In regex: <code>/^ *x.*/</code>)</p>
<p>This:</p>
<pre><code>main(){
shopt -s extglob
local line=' x bar'
case "$line" in
*( )x*) ;;
*) ;;
esac
}
main "$@"
</code></pre>
<p>is giving me a syntax... | 1,679 | 1,084,774 | 2016-01-21 01:08:54 | 34,913,651 | 12 | 2016-01-21 01:08:54 | 89,817 | 2016-01-21 01:08:54 | https://stackoverflow.com/q/34912289 | https://stackoverflow.com/a/34913651 | <p>bash has to parse the function in order to create it, and since the extended glob syntax you're using would normally be invalid, it can't parse the function unless extglob is on <em>when the function is created</em>.</p>
<p>Net result: extglob has to be on both when the function is declared <em>and</em> when it run... | <p>bash has to parse the function in order to create it, and since the extended glob syntax you're using would normally be invalid, it can't parse the function unless extglob is on <em>when the function is created</em>.</p> <p>Net result: extglob has to be on both when the function is declared <em>and</em> when it run... | 387 | bash | <h1>Case statement with extglob</h1>
<p>With <em>extglob</em> on, I want to match a variable against </p>
<pre><code>*( )x*
</code></pre>
<p>(In regex: <code>/^ *x.*/</code>)</p>
<p>This:</p>
<pre><code>main(){
shopt -s extglob
local line=' x bar'
case "$line" in
*( )x*) ;;
*) ;;
esac
}
main "$@"
</... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,909 | bash | # Case statement with extglob
With *extglob* on, I want to match a variable against
```
*( )x*
```
(In regex: `/^ *x.*/`)
This:
```
main(){
shopt -s extglob
local line=' x bar'
case "$line" in
*( )x*) ;;
*) ;;
esac
}
main "$@"
```
is giving me a syntax error. Either removing the extglob parenthese... | bash has to parse the function in order to create it, and since the extended glob syntax you're using would normally be invalid, it can't parse the function unless extglob is on *when the function is created*.
Net result: extglob has to be on both when the function is declared *and* when it runs. The `shopt -s extglob... |
34786585 | PowerShell get weekday name from a date | 8 | 2016-01-14 10:01:49 | <p>Using powershell I want to get the week day name (Friday) from a date. Been googling and cant find this one. It so I can do an IF statement to do something if the date is a Friday.</p>
<p>Can anyone help?</p>
| 15,732 | 2,050,577 | 2016-01-14 10:12:39 | 34,786,838 | 12 | 2016-01-14 10:12:39 | 3,122,744 | 2016-01-14 10:12:39 | https://stackoverflow.com/q/34786585 | https://stackoverflow.com/a/34786838 | <p>Use <code>Get-Date</code> to produce a DateTime object, then call its DayOfWeek method. For example:</p>
<pre><code>(get-date 01/01/2016).DayOfWeek
</code></pre>
| <p>Use <code>Get-Date</code> to produce a DateTime object, then call its DayOfWeek method. For example:</p> <pre><code>(get-date 01/01/2016).DayOfWeek </code></pre> | 526 | powershell | <h1>PowerShell get weekday name from a date</h1>
<p>Using powershell I want to get the week day name (Friday) from a date. Been googling and cant find this one. It so I can do an IF statement to do something if the date is a Friday.</p>
<p>Can anyone help?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,910 | bash | # PowerShell get weekday name from a date
Using powershell I want to get the week day name (Friday) from a date. Been googling and cant find this one. It so I can do an IF statement to do something if the date is a Friday.
Can anyone help? | Use `Get-Date` to produce a DateTime object, then call its DayOfWeek method. For example:
```
(get-date 01/01/2016).DayOfWeek
``` |
34619486 | enter-pssession invoke-command, when to use? | 8 | 2016-01-05 19:12:00 | <p>I am writing a script to stop and start services in two remote servers.
Here's my question,</p>
<p>in my script I did new-pssession and used invoke-command to stop and start services.</p>
<p>Do I need to use enter-pssession? </p>
<p><strong>Updates:</strong>
Here's what my script needs to do. </p>
<p>on server1... | 34,119 | 3,939,140 | 2016-01-06 01:00:22 | 34,623,888 | 12 | 2016-01-06 00:49:05 | 3,337,258 | 2016-01-06 00:49:05 | https://stackoverflow.com/q/34619486 | https://stackoverflow.com/a/34623888 | <p><code>Enter-PSSession</code> - Since this is an interactive session you type what you want at the console and immediately see the results in the console.(just like CMD).
If its just 2 servers then you can use <code>enter-pssession</code> but it is always going to be serial meaning you do something on one server the... | <p><code>Enter-PSSession</code> - Since this is an interactive session you type what you want at the console and immediately see the results in the console.(just like CMD). If its just 2 servers then you can use <code>enter-pssession</code> but it is always going to be serial meaning you do something on one server the... | 526, 43391 | invoke-command, powershell | <h1>enter-pssession invoke-command, when to use?</h1>
<p>I am writing a script to stop and start services in two remote servers.
Here's my question,</p>
<p>in my script I did new-pssession and used invoke-command to stop and start services.</p>
<p>Do I need to use enter-pssession? </p>
<p><strong>Updates:</strong>
H... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,911 | bash | # enter-pssession invoke-command, when to use?
I am writing a script to stop and start services in two remote servers.
Here's my question,
in my script I did new-pssession and used invoke-command to stop and start services.
Do I need to use enter-pssession?
**Updates:**
Here's what my script needs to do.
on server... | `Enter-PSSession` - Since this is an interactive session you type what you want at the console and immediately see the results in the console.(just like CMD).
If its just 2 servers then you can use `enter-pssession` but it is always going to be serial meaning you do something on one server then you move onto another.
... |
33806488 | Splitting a large CSV file with the command line | 8 | 2015-11-19 14:21:00 | <p>I know OS X supports the Linux-like <code>split</code> command.</p>
<p>I have a huge file <code>file.csv</code>.</p>
<p>When I run</p>
<pre><code>split -l 1000 file.csv new_
</code></pre>
<p>I get created one file <code>new_aa</code>, but this file is the same as <code>file.csv</code>. It is not split.</p>
<p>When I... | 21,435 | 1,275,959 | 2021-08-31 15:35:33 | 33,807,581 | 12 | 2015-11-19 15:11:05 | 1,983,854 | 2015-11-19 15:11:05 | https://stackoverflow.com/q/33806488 | https://stackoverflow.com/a/33807581 | <p>Your command is just fine:</p>
<pre><code>split -l 1000 file.csv new_
</code></pre>
<p>However, it seems that you have some encoding problems. When you say <code>file file.csv</code> you get </p>
<blockquote>
<p>ASCII text, with CR line terminators</p>
</blockquote>
<p>So what you need is to port this file fro... | <p>Your command is just fine:</p> <pre><code>split -l 1000 file.csv new_ </code></pre> <p>However, it seems that you have some encoding problems. When you say <code>file file.csv</code> you get </p> <blockquote> <p>ASCII text, with CR line terminators</p> </blockquote> <p>So what you need is to port this file fro... | 34, 369, 387, 2193 | bash, macos, split, unix | <h1>Splitting a large CSV file with the command line</h1>
<p>I know OS X supports the Linux-like <code>split</code> command.</p>
<p>I have a huge file <code>file.csv</code>.</p>
<p>When I run</p>
<pre><code>split -l 1000 file.csv new_
</code></pre>
<p>I get created one file <code>new_aa</code>, but this file is the sam... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,912 | bash | # Splitting a large CSV file with the command line
I know OS X supports the Linux-like `split` command.
I have a huge file `file.csv`.
When I run
```
split -l 1000 file.csv new_
```
I get created one file `new_aa`, but this file is the same as `file.csv`. It is not split.
When I run file file.csv, I get `ASCII te... | Your command is just fine:
```
split -l 1000 file.csv new_
```
However, it seems that you have some encoding problems. When you say `file file.csv` you get
> ASCII text, with CR line terminators
So what you need is to port this file from MAC to UNIX. And this can be done with either of these:
```
mac2unix file.csv... |
33111227 | Why do scripts define common commands in variables? | 8 | 2015-10-13 19:40:36 | <p>I see this all the time at my place of work:</p>
<pre><code>#!/bin/sh
.....
CAT=/usr/bin/cat # An alias for cat
MAIL=/usr/bin/mail # An alias for mail
WC=/usr/bin/wc # An alias for word count
GREP=/usr/bin/grep ... | 111 | 3,412,229 | 2015-10-14 17:46:55 | 33,111,599 | 12 | 2015-10-13 20:02:41 | 1,491,895 | 2015-10-13 20:02:41 | https://stackoverflow.com/q/33111227 | https://stackoverflow.com/a/33111599 | <p>Using the full pathname ensures that the script operates correctly even if it's run by a user who customizes their <code>PATH</code> environment variable so that it finds different versions of these commands than the script expects.</p>
<p>Using variables simplifies writing the script, so you don't have to write th... | <p>Using the full pathname ensures that the script operates correctly even if it's run by a user who customizes their <code>PATH</code> environment variable so that it finds different versions of these commands than the script expects.</p> <p>Using variables simplifies writing the script, so you don't have to write th... | 387, 390, 10327 | bash, sh, shell | <h1>Why do scripts define common commands in variables?</h1>
<p>I see this all the time at my place of work:</p>
<pre><code>#!/bin/sh
.....
CAT=/usr/bin/cat # An alias for cat
MAIL=/usr/bin/mail # An alias for mail
WC=/usr/bin/wc ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,913 | bash | # Why do scripts define common commands in variables?
I see this all the time at my place of work:
```
#!/bin/sh
.....
CAT=/usr/bin/cat # An alias for cat
MAIL=/usr/bin/mail # An alias for mail
WC=/usr/bin/wc # An ali... | Using the full pathname ensures that the script operates correctly even if it's run by a user who customizes their `PATH` environment variable so that it finds different versions of these commands than the script expects.
Using variables simplifies writing the script, so you don't have to write the full pathname of a ... |
32202068 | JMeter - Static method get( java.lang.String ) not found in class'java.nio.file.Paths' | 8 | 2015-08-25 10:51:11 | <p>I am trying to create a JMeter load test. I need the test to take a sample log file and change its name. The only way I could find to do this was to copy the file in a BeanShell Preprocessor but I am getting the following error: </p>
<pre><code>ERROR - jmeter.util.BeanShellInterpreter: Error invoking bsh method: e... | 6,866 | 5,243,809 | 2015-08-25 10:55:34 | 32,202,176 | 12 | 2015-08-25 10:55:34 | 22,656 | 2015-08-25 10:55:34 | https://stackoverflow.com/q/32202068 | https://stackoverflow.com/a/32202176 | <p>My <em>guess</em> is that the problem is that it's not populating the varargs parameter. Try:</p>
<pre><code>Path target = Paths.get(filename, new String[0]);
</code></pre>
| <p>My <em>guess</em> is that the problem is that it's not populating the varargs parameter. Try:</p> <pre><code>Path target = Paths.get(filename, new String[0]); </code></pre> | 17, 8401, 13554, 70890 | beanshell, java, java.nio.file, jmeter | <h1>JMeter - Static method get( java.lang.String ) not found in class'java.nio.file.Paths'</h1>
<p>I am trying to create a JMeter load test. I need the test to take a sample log file and change its name. The only way I could find to do this was to copy the file in a BeanShell Preprocessor but I am getting the following... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,914 | bash | # JMeter - Static method get( java.lang.String ) not found in class'java.nio.file.Paths'
I am trying to create a JMeter load test. I need the test to take a sample log file and change its name. The only way I could find to do this was to copy the file in a BeanShell Preprocessor but I am getting the following error:
... | My *guess* is that the problem is that it's not populating the varargs parameter. Try:
```
Path target = Paths.get(filename, new String[0]);
``` |
32129369 | How to run a command only if is the master branch in travis-ci? | 8 | 2015-08-20 22:17:55 | <p>I have a open-source project and i want to deploy the code just if the code is in the master branch, i already tried many approachs, like:</p>
<pre><code>- if [[ $TRAVIS_BRANCH == 'master' ]]; then fab deploy; fi
</code></pre>
<p>Or something like:</p>
<pre><code>BRANCH = "master"
def _get_local_branch():
re... | 3,446 | 1,530,565 | 2017-10-25 14:31:51 | 32,131,504 | 12 | 2015-08-21 02:34:02 | 213,272 | 2015-08-21 02:34:02 | https://stackoverflow.com/q/32129369 | https://stackoverflow.com/a/32131504 | <p>I'm not sure why your first approach doesn't work but I would suggest using the <code>deploy:</code> directive in your .travis.yml file with a custom deployment script like this:</p>
<pre><code>deploy:
provider: script
script: scripts/deploy.sh
on:
branch: master
</code></pre>
<p>Here is the <a href="htt... | <p>I'm not sure why your first approach doesn't work but I would suggest using the <code>deploy:</code> directive in your .travis.yml file with a custom deployment script like this:</p> <pre><code>deploy: provider: script script: scripts/deploy.sh on: branch: master </code></pre> <p>Here is the <a href="htt... | 16, 10327, 42950, 74123 | fabric, python, sh, travis-ci | <h1>How to run a command only if is the master branch in travis-ci?</h1>
<p>I have a open-source project and i want to deploy the code just if the code is in the master branch, i already tried many approachs, like:</p>
<pre><code>- if [[ $TRAVIS_BRANCH == 'master' ]]; then fab deploy; fi
</code></pre>
<p>Or something... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,915 | bash | # How to run a command only if is the master branch in travis-ci?
I have a open-source project and i want to deploy the code just if the code is in the master branch, i already tried many approachs, like:
```
- if [[ $TRAVIS_BRANCH == 'master' ]]; then fab deploy; fi
```
Or something like:
```
BRANCH = "master"
de... | I'm not sure why your first approach doesn't work but I would suggest using the `deploy:` directive in your .travis.yml file with a custom deployment script like this:
```
deploy:
provider: script
script: scripts/deploy.sh
on:
branch: master
```
Here is the [documentation](http://docs.travis-ci.com/user/dep... |
32120202 | What is $? an alias for in Powershell? | 8 | 2015-08-20 13:54:09 | <p>Within a script I was shown today was the line:</p>
<pre><code>If ($?) {
#do some stuff
}
</code></pre>
<p>I have never seen the dollar sign question mark alias $? before and am unable to ascertain via Google what it is for.</p>
<p>When I execute it in a powershell window it typically returns True, however occasi... | 1,009 | 2,796,058 | 2017-03-07 13:26:33 | 32,120,260 | 12 | 2015-08-20 13:56:42 | 613,928 | 2015-08-20 14:23:55 | https://stackoverflow.com/q/32120202 | https://stackoverflow.com/a/32120260 | <p>From <a href="https://technet.microsoft.com/en-us/library/hh847768.aspx">about_automatic_variables</a>:</p>
<blockquote>
<p>$?<br>
Contains the execution status of the last operation. It contains
TRUE if the last operation succeeded and FALSE if it failed.</p>
</blockquote>
<pre><code>Get-Help about_automati... | <p>From <a href="https://technet.microsoft.com/en-us/library/hh847768.aspx">about_automatic_variables</a>:</p> <blockquote> <p>$?<br> Contains the execution status of the last operation. It contains TRUE if the last operation succeeded and FALSE if it failed.</p> </blockquote> <pre><code>Get-Help about_automati... | 276, 526, 1448 | alias, powershell, variables | <h1>What is $? an alias for in Powershell?</h1>
<p>Within a script I was shown today was the line:</p>
<pre><code>If ($?) {
#do some stuff
}
</code></pre>
<p>I have never seen the dollar sign question mark alias $? before and am unable to ascertain via Google what it is for.</p>
<p>When I execute it in a powershell ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,916 | bash | # What is $? an alias for in Powershell?
Within a script I was shown today was the line:
```
If ($?) {
#do some stuff
}
```
I have never seen the dollar sign question mark alias $? before and am unable to ascertain via Google what it is for.
When I execute it in a powershell window it typically returns True, howeve... | From [about_automatic_variables](https://technet.microsoft.com/en-us/library/hh847768.aspx):
> $?
> Contains the execution status of the last operation. It contains
> TRUE if the last operation succeeded and FALSE if it failed.
```
Get-Help about_automatic_variables
``` |
29853399 | Powershell - Get server name and IP from text list | 8 | 2015-04-24 17:03:07 | <p>I am using the following suggestion provided in this link:
<a href="http://www.experts-exchange.com/Programming/Languages/Scripting/Powershell/Q_27722701.html" rel="noreferrer">Experts-Exchange</a></p>
<p>I am trying to take a server (host name) list and save the host name and IP address in a .csv file.</p>
<p>Usi... | 56,138 | 538,029 | 2023-09-22 22:33:44 | 29,854,181 | 12 | 2015-04-24 17:46:37 | 2,690,128 | 2015-04-24 17:51:50 | https://stackoverflow.com/q/29853399 | https://stackoverflow.com/a/29854181 | <p>Looks like some simple typos at work. </p>
<ul>
<li>$result was being reset inside the in the loop </li>
<li>$addresses inside the loop wasn't assigned.</li>
<li>$result.ipaddress was not assigned to $a.IPAddressToString for the output object.</li>
</ul>
<p>Try this:</p>
<pre><code>$servers = get-content "X:\serv... | <p>Looks like some simple typos at work. </p> <ul> <li>$result was being reset inside the in the loop </li> <li>$addresses inside the loop wasn't assigned.</li> <li>$result.ipaddress was not assigned to $a.IPAddressToString for the output object.</li> </ul> <p>Try this:</p> <pre><code>$servers = get-content "X:\serv... | 73, 526 | csv, powershell | <h1>Powershell - Get server name and IP from text list</h1>
<p>I am using the following suggestion provided in this link:
<a href="http://www.experts-exchange.com/Programming/Languages/Scripting/Powershell/Q_27722701.html" rel="noreferrer">Experts-Exchange</a></p>
<p>I am trying to take a server (host name) list and s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,917 | bash | # Powershell - Get server name and IP from text list
I am using the following suggestion provided in this link:
[Experts-Exchange](http://www.experts-exchange.com/Programming/Languages/Scripting/Powershell/Q_27722701.html)
I am trying to take a server (host name) list and save the host name and IP address in a .csv f... | Looks like some simple typos at work.
- $result was being reset inside the in the loop
- $addresses inside the loop wasn't assigned.
- $result.ipaddress was not assigned to $a.IPAddressToString for the output object.
Try this:
```
$servers = get-content "X:\servers.txt"
$serversAndIps ="X:\test.csv"
$results = @()
... |
28098743 | how to pass each shell parameter in new line | 8 | 2015-01-22 21:10:43 | <p>I had a shell script that takes 3 parameters</p>
<pre><code>test.sh a b c
</code></pre>
<p>I want to give each parameter in a new line</p>
<p>some thing like this :</p>
<pre><code>test.sh a
b
c
</code></pre>
<p>i am on AIX
Thanks.</p>
| 5,792 | 2,711,819 | 2015-01-22 23:54:49 | 28,098,836 | 12 | 2015-01-22 21:16:26 | 1,387,612 | 2015-01-22 23:54:49 | https://stackoverflow.com/q/28098743 | https://stackoverflow.com/a/28098836 | <p>Just put <code>\</code> at the end of line, it "escapes" the meaning of the character following it, which in this case is a newline.</p>
<pre><code>test.sh a \
b \
c
</code></pre>
| <p>Just put <code>\</code> at the end of line, it "escapes" the meaning of the character following it, which in this case is a newline.</p> <pre><code>test.sh a \ b \ c </code></pre> | 58, 390, 989 | aix, linux, shell | <h1>how to pass each shell parameter in new line</h1>
<p>I had a shell script that takes 3 parameters</p>
<pre><code>test.sh a b c
</code></pre>
<p>I want to give each parameter in a new line</p>
<p>some thing like this :</p>
<pre><code>test.sh a
b
c
</code></pre>
<p>i am on AIX
Thanks.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,918 | bash | # how to pass each shell parameter in new line
I had a shell script that takes 3 parameters
```
test.sh a b c
```
I want to give each parameter in a new line
some thing like this :
```
test.sh a
b
c
```
i am on AIX
Thanks. | Just put `\` at the end of line, it "escapes" the meaning of the character following it, which in this case is a newline.
```
test.sh a \
b \
c
``` |
26509040 | Check the last exit code of a command echoed by a bash script | 8 | 2014-10-22 13:49:53 | <pre><code>#!/bin/bash
test(){
return 1;
}
VAR=$(expect -c 'puts "Exiting"; exit 1;');
echo "$VAR";
RETURN_CODE=$?;
echo $RETURN_CODE;
test
RETURN_CODE=$?;
echo $RETURN_CODE;
</code></pre>
<p>The output of this script will be:</p>
<pre><code>Exiting
0
1
</code></pre>
<p>My guess is that t... | 7,416 | 3,125,731 | 2021-04-30 00:21:23 | 26,509,093 | 12 | 2014-10-22 13:51:46 | 548,225 | 2014-10-22 13:51:46 | https://stackoverflow.com/q/26509040 | https://stackoverflow.com/a/26509093 | <p>Exit/Return code needs be extracted immediately after running any command.</p>
<p>So use:</p>
<pre><code>VAR=$(expect -c 'puts "Exiting"; exit 1;')
RETURN_CODE=$?
echo "$VAR"
echo $RETURN_CODE
</code></pre>
<p>Since your code is doing <code>echo</code> right after <code>expect</code> call therefore <code>$?</code... | <p>Exit/Return code needs be extracted immediately after running any command.</p> <p>So use:</p> <pre><code>VAR=$(expect -c 'puts "Exiting"; exit 1;') RETURN_CODE=$? echo "$VAR" echo $RETURN_CODE </code></pre> <p>Since your code is doing <code>echo</code> right after <code>expect</code> call therefore <code>$?</code... | 387, 9048, 9206 | bash, expect, return-value | <h1>Check the last exit code of a command echoed by a bash script</h1>
<pre><code>#!/bin/bash
test(){
return 1;
}
VAR=$(expect -c 'puts "Exiting"; exit 1;');
echo "$VAR";
RETURN_CODE=$?;
echo $RETURN_CODE;
test
RETURN_CODE=$?;
echo $RETURN_CODE;
</code></pre>
<p>The output of this script ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,919 | bash | # Check the last exit code of a command echoed by a bash script
```
#!/bin/bash
test(){
return 1;
}
VAR=$(expect -c 'puts "Exiting"; exit 1;');
echo "$VAR";
RETURN_CODE=$?;
echo $RETURN_CODE;
test
RETURN_CODE=$?;
echo $RETURN_CODE;
```
The output of this script will be:
```
Exiting
0
1
```
My guess is th... | Exit/Return code needs be extracted immediately after running any command.
So use:
```
VAR=$(expect -c 'puts "Exiting"; exit 1;')
RETURN_CODE=$?
echo "$VAR"
echo $RETURN_CODE
```
Since your code is doing `echo` right after `expect` call therefore `$?` is giving you exit status of `echo` rather than the `expect` comm... |
26295148 | Parsing MySQL output in Bash | 8 | 2014-10-10 08:34:44 | <p>How can I redirect output of mysql query with table border as separator?
I try with this code :</p>
<pre><code>mysql -u root -h localhost -D cronjob -e "select * from cron_list" > query.txt
</code></pre>
<p>What I expect is output like :</p>
<pre><code>| id | datetime | recurrency | command ... | 8,533 | 3,843,630 | 2014-10-13 09:27:17 | 26,295,339 | 12 | 2014-10-10 08:45:16 | 1,983,854 | 2014-10-13 09:27:17 | https://stackoverflow.com/q/26295148 | https://stackoverflow.com/a/26295339 | <p>From <code>man mysql</code>:</p>
<blockquote>
<p><strong>--table, -t</strong></p>
<p>Display output in table format. This is the default for interactive
use, but can be used to produce table output in batch mode.</p>
</blockquote>
<p>Note <code>-t</code> is the default behaviour, but not whenever you pipe... | <p>From <code>man mysql</code>:</p> <blockquote> <p><strong>--table, -t</strong></p> <p>Display output in table format. This is the default for interactive use, but can be used to produce table output in batch mode.</p> </blockquote> <p>Note <code>-t</code> is the default behaviour, but not whenever you pipe... | 21, 387 | bash, mysql | <h1>Parsing MySQL output in Bash</h1>
<p>How can I redirect output of mysql query with table border as separator?
I try with this code :</p>
<pre><code>mysql -u root -h localhost -D cronjob -e "select * from cron_list" > query.txt
</code></pre>
<p>What I expect is output like :</p>
<pre><code>| id | datetime | ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,920 | bash | # Parsing MySQL output in Bash
How can I redirect output of mysql query with table border as separator?
I try with this code :
```
mysql -u root -h localhost -D cronjob -e "select * from cron_list" > query.txt
```
What I expect is output like :
```
| id | datetime | recurrency | command |
| 1 |... | From `man mysql`:
> **--table, -t**
>
> Display output in table format. This is the default for interactive
> use, but can be used to produce table output in batch mode.
Note `-t` is the default behaviour, but not whenever you pipe to a file. That's why in that case you have to make it explicit.
---
Other interesti... |
26260581 | What is the actual signal behind ERR | 8 | 2014-10-08 15:21:08 | <p>I've read in several places (including SO) that <code>-e</code> is considered "poor form" and is unreliable for exiting a script on any error. A better way to handle errors seems to be using <code>trap</code>, as such:</p>
<pre><code>trap "echo there was an error; exit 1;" ERR
</code></pre>
<p>I can't seem to loca... | 4,278 | 2,161,954 | 2017-02-23 13:43:07 | 26,261,518 | 12 | 2014-10-08 16:10:23 | 1,566,221 | 2014-10-08 16:10:23 | https://stackoverflow.com/q/26260581 | https://stackoverflow.com/a/26261518 | <p>There is no signal corresponding to the <code>trap</code> signal specification <code>ERR</code>.</p>
<p><code>ERR</code> is one of the signal specifications implemented internally by <code>bash</code>. [Note 1] If <code>trap ERR</code> is enabled, then bash will invoke the corresponding handler in exactly the same ... | <p>There is no signal corresponding to the <code>trap</code> signal specification <code>ERR</code>.</p> <p><code>ERR</code> is one of the signal specifications implemented internally by <code>bash</code>. [Note 1] If <code>trap ERR</code> is enabled, then bash will invoke the corresponding handler in exactly the same ... | 58, 379, 387, 2481, 124485 | bash, bash-trap, error-handling, linux, signals | <h1>What is the actual signal behind ERR</h1>
<p>I've read in several places (including SO) that <code>-e</code> is considered "poor form" and is unreliable for exiting a script on any error. A better way to handle errors seems to be using <code>trap</code>, as such:</p>
<pre><code>trap "echo there was an error; exit ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,921 | bash | # What is the actual signal behind ERR
I've read in several places (including SO) that `-e` is considered "poor form" and is unreliable for exiting a script on any error. A better way to handle errors seems to be using `trap`, as such:
```
trap "echo there was an error; exit 1;" ERR
```
I can't seem to locate in the... | There is no signal corresponding to the `trap` signal specification `ERR`.
`ERR` is one of the signal specifications implemented internally by `bash`. [Note 1] If `trap ERR` is enabled, then bash will invoke the corresponding handler in exactly the same cases as it would have exited had `set -e` been enabled. (Consequ... |
25645946 | Bash redirect output to tty and file | 8 | 2014-09-03 13:41:32 | <p>I'm trying to log some part of script execution. Logs should be displayed at second tty, and also written to a log file.</p>
<p>I can do it with a simple:</p>
<pre><code>echo "Hello log" > /dev/tty2
echo "Hello log" > /var/log/my_logs
</code></pre>
<p>But it is very uncomfortable. I could also redirect echo... | 16,671 | 784,345 | 2014-09-03 13:50:17 | 25,646,010 | 12 | 2014-09-03 13:44:26 | 1,126,841 | 2014-09-03 13:44:26 | https://stackoverflow.com/q/25645946 | https://stackoverflow.com/a/25646010 | <p>Use <code>tee</code>.</p>
<pre><code>echo "Hello log" | tee /dev/tty2 /var/log/my_logs > /dev/null
</code></pre>
<p>(The final redirection is to prevent the output from appearing to standard output as well. You could also use <code>echo "Hello log" | tee /dev/tty2 > /var/log/my_logs</code>; there's no real d... | <p>Use <code>tee</code>.</p> <pre><code>echo "Hello log" | tee /dev/tty2 /var/log/my_logs > /dev/null </code></pre> <p>(The final redirection is to prevent the output from appearing to standard output as well. You could also use <code>echo "Hello log" | tee /dev/tty2 > /var/log/my_logs</code>; there's no real d... | 387, 4867 | bash, stdout | <h1>Bash redirect output to tty and file</h1>
<p>I'm trying to log some part of script execution. Logs should be displayed at second tty, and also written to a log file.</p>
<p>I can do it with a simple:</p>
<pre><code>echo "Hello log" > /dev/tty2
echo "Hello log" > /var/log/my_logs
</code></pre>
<p>But it is ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,922 | bash | # Bash redirect output to tty and file
I'm trying to log some part of script execution. Logs should be displayed at second tty, and also written to a log file.
I can do it with a simple:
```
echo "Hello log" > /dev/tty2
echo "Hello log" > /var/log/my_logs
```
But it is very uncomfortable. I could also redirect echo... | Use `tee`.
```
echo "Hello log" | tee /dev/tty2 /var/log/my_logs > /dev/null
```
(The final redirection is to prevent the output from appearing to standard output as well. You could also use `echo "Hello log" | tee /dev/tty2 > /var/log/my_logs`; there's no real difference between the two. `tee` just writes it standar... |
25563024 | Optimize shell script for multiple sed replacements | 8 | 2014-08-29 06:50:15 | <p>I have a file containing a list of replacement pairs (about 100 of them) which are used by <code>sed</code> to replace strings in files.</p>
<p>The pairs go like:</p>
<pre><code>old|new
tobereplaced|replacement
(stuffiwant).*(too)|\1\2
</code></pre>
<p>and my current code is:</p>
<pre><code>cat replacement_list ... | 3,934 | 556,065 | 2022-01-27 12:36:02 | 25,563,180 | 12 | 2014-08-29 07:02:51 | 1,648,033 | 2014-08-31 05:42:09 | https://stackoverflow.com/q/25563024 | https://stackoverflow.com/a/25563180 | <p>You can use <code>sed</code> to produce correctly -formatted <code>sed</code> input:</p>
<pre><code>sed -e 's/^/s|/; s/$/|g/' replacement_list | sed -r -f - file
</code></pre>
| <p>You can use <code>sed</code> to produce correctly -formatted <code>sed</code> input:</p> <pre><code>sed -e 's/^/s|/; s/$/|g/' replacement_list | sed -r -f - file </code></pre> | 387, 390, 5282 | bash, sed, shell | <h1>Optimize shell script for multiple sed replacements</h1>
<p>I have a file containing a list of replacement pairs (about 100 of them) which are used by <code>sed</code> to replace strings in files.</p>
<p>The pairs go like:</p>
<pre><code>old|new
tobereplaced|replacement
(stuffiwant).*(too)|\1\2
</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 | 10,923 | bash | # Optimize shell script for multiple sed replacements
I have a file containing a list of replacement pairs (about 100 of them) which are used by `sed` to replace strings in files.
The pairs go like:
```
old|new
tobereplaced|replacement
(stuffiwant).*(too)|\1\2
```
and my current code is:
```
cat replacement_list |... | You can use `sed` to produce correctly -formatted `sed` input:
```
sed -e 's/^/s|/; s/$/|g/' replacement_list | sed -r -f - file
``` |
23967619 | Azure: Delete all *test.zip blobs from Azure Storage using Powershell | 8 | 2014-05-31 07:33:16 | <p>I would like to delete all files from an azure storage container where the filename includes test.zip</p>
<p>I am able to get all the files and export them to a file like this:</p>
<pre><code>$context = New-AzureStorageContext -StorageAccountName ACCOUNTNAME `
-StorageAccountKey ... | 10,605 | 3,693,688 | 2021-12-31 13:28:03 | 23,967,645 | 12 | 2014-05-31 07:37:16 | 188,096 | 2018-10-22 21:34:38 | https://stackoverflow.com/q/23967619 | https://stackoverflow.com/a/23967645 | <p>Since blob storage only support individual blob deletes at this moment (i.e. it doesn't support batch deletes), your only option would be to read individual blobs from the output file and delete the blob one by one.</p>
<p>Based on your comments below, try the following:</p>
<pre><code>$context = New-AzureStorageC... | <p>Since blob storage only support individual blob deletes at this moment (i.e. it doesn't support batch deletes), your only option would be to read individual blobs from the output file and delete the blob one by one.</p> <p>Based on your comments below, try the following:</p> <pre><code>$context = New-AzureStorageC... | 526, 14158, 35808 | azure, azure-storage, powershell | <h1>Azure: Delete all *test.zip blobs from Azure Storage using Powershell</h1>
<p>I would like to delete all files from an azure storage container where the filename includes test.zip</p>
<p>I am able to get all the files and export them to a file like this:</p>
<pre><code>$context = New-AzureStorageContext -StorageA... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,924 | bash | # Azure: Delete all *test.zip blobs from Azure Storage using Powershell
I would like to delete all files from an azure storage container where the filename includes test.zip
I am able to get all the files and export them to a file like this:
```
$context = New-AzureStorageContext -StorageAccountName ACCOUNTNAME `
... | Since blob storage only support individual blob deletes at this moment (i.e. it doesn't support batch deletes), your only option would be to read individual blobs from the output file and delete the blob one by one.
Based on your comments below, try the following:
```
$context = New-AzureStorageContext -StorageAccoun... |
23024659 | Powershell: Determine if a process is 32 or 64 bit | 8 | 2014-04-12 00:30:40 | <p>Is there a way to determine if a given process ID is for a 32 or a 64 bit process? I'm using Powershell v3.0</p>
| 6,117 | 21,539 | 2017-05-04 04:25:16 | 23,025,963 | 12 | 2014-04-12 04:02:06 | 153,982 | 2014-04-12 04:02:06 | https://stackoverflow.com/q/23024659 | https://stackoverflow.com/a/23025963 | <p>Try this:</p>
<pre><code>Add-Type -MemberDefinition @'
[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool IsWow64Process(
[In] System.IntPtr hProcess,
[Out, MarshalAs(UnmanagedType.Bool)] out bool w... | <p>Try this:</p> <pre><code>Add-Type -MemberDefinition @' [DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool IsWow64Process( [In] System.IntPtr hProcess, [Out, MarshalAs(UnmanagedType.Bool)] out bool w... | 526, 73157 | powershell, powershell-3.0 | <h1>Powershell: Determine if a process is 32 or 64 bit</h1>
<p>Is there a way to determine if a given process ID is for a 32 or a 64 bit process? I'm using Powershell v3.0</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,925 | bash | # Powershell: Determine if a process is 32 or 64 bit
Is there a way to determine if a given process ID is for a 32 or a 64 bit process? I'm using Powershell v3.0 | Try this:
```
Add-Type -MemberDefinition @'
[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool IsWow64Process(
[In] System.IntPtr hProcess,
[Out, MarshalAs(UnmanagedType.Bool)] out bool wow64Process);
... |
22585091 | Git-hooks pre-push script does not receive input via STDIN | 8 | 2014-03-22 23:34:35 | <p>The <a href="http://git-scm.com/docs/githooks#_pre_push" rel="noreferrer">git-hooks pre-push documentation</a> states that the first line of <em>stdin</em> will be populated with the local ref and sha, and the remote ref and sha as such:</p>
<p><code><local ref> SP <local sha1> SP <remote ref> SP ... | 2,859 | 1,254,812 | 2014-03-23 01:03:52 | 22,585,746 | 12 | 2014-03-23 01:03:52 | 669,631 | 2014-03-23 01:03:52 | https://stackoverflow.com/q/22585091 | https://stackoverflow.com/a/22585746 | <p>Apologies if this is stating the obvious, but if there's nothing to push, you won't get any lines on stdin. The sample <code>.git/hooks/pre-push.sample</code> has a while loop:</p>
<pre><code>IFS=' '
while read local_ref local_sha remote_ref remote_sha
do
...
done
</code></pre>
<p>and that appears to work when... | <p>Apologies if this is stating the obvious, but if there's nothing to push, you won't get any lines on stdin. The sample <code>.git/hooks/pre-push.sample</code> has a while loop:</p> <pre><code>IFS=' ' while read local_ref local_sha remote_ref remote_sha do ... done </code></pre> <p>and that appears to work when... | 119, 387, 43087 | bash, git, githooks | <h1>Git-hooks pre-push script does not receive input via STDIN</h1>
<p>The <a href="http://git-scm.com/docs/githooks#_pre_push" rel="noreferrer">git-hooks pre-push documentation</a> states that the first line of <em>stdin</em> will be populated with the local ref and sha, and the remote ref and sha as such:</p>
<p><co... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,926 | bash | # Git-hooks pre-push script does not receive input via STDIN
The [git-hooks pre-push documentation](http://git-scm.com/docs/githooks#_pre_push) states that the first line of *stdin* will be populated with the local ref and sha, and the remote ref and sha as such:
`<local ref> SP <local sha1> SP <remote ref> SP <remot... | Apologies if this is stating the obvious, but if there's nothing to push, you won't get any lines on stdin. The sample `.git/hooks/pre-push.sample` has a while loop:
```
IFS=' '
while read local_ref local_sha remote_ref remote_sha
do
...
done
```
and that appears to work when I try it here with an echo inside tha... |
22366622 | Delete empty lines in csv file | 8 | 2014-03-13 00:16:38 | <p>I have a file with 4 million of lines, every line ends with the char $, but I mistakenly add a new line after the the line delimiter while scraping a website, so right now it is looking like this:</p>
<pre><code>fist name, last name, phone, address, postal code, city, region,$
$
fist name, last name, phone, addr... | 22,775 | 3,344,414 | 2024-08-31 11:23:07 | 22,367,848 | 12 | 2014-03-13 02:20:37 | 318,716 | 2014-03-13 02:20:37 | https://stackoverflow.com/q/22366622 | https://stackoverflow.com/a/22367848 | <p>To remove blank lines with <code>sed</code>:</p>
<pre><code>sed -i '/^$/d' yourfile.csv
</code></pre>
<p>To remove lines consisting of a single <code>$</code>:</p>
<pre><code>sed -i '/^$$/d' yourfile.csv
</code></pre>
<p>Most versions of sed support the <code>-i</code> switch; if yours does not you will need e.g... | <p>To remove blank lines with <code>sed</code>:</p> <pre><code>sed -i '/^$/d' yourfile.csv </code></pre> <p>To remove lines consisting of a single <code>$</code>:</p> <pre><code>sed -i '/^$$/d' yourfile.csv </code></pre> <p>Most versions of sed support the <code>-i</code> switch; if yours does not you will need e.g... | 58, 293, 387, 990, 5282 | awk, bash, linux, sed, vi | <h1>Delete empty lines in csv file</h1>
<p>I have a file with 4 million of lines, every line ends with the char $, but I mistakenly add a new line after the the line delimiter while scraping a website, so right now it is looking like this:</p>
<pre><code>fist name, last name, phone, address, postal code, city, region... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,927 | bash | # Delete empty lines in csv file
I have a file with 4 million of lines, every line ends with the char $, but I mistakenly add a new line after the the line delimiter while scraping a website, so right now it is looking like this:
```
fist name, last name, phone, address, postal code, city, region,$
$
fist name, las... | To remove blank lines with `sed`:
```
sed -i '/^$/d' yourfile.csv
```
To remove lines consisting of a single `$`:
```
sed -i '/^$$/d' yourfile.csv
```
Most versions of sed support the `-i` switch; if yours does not you will need e.g. `sed '/^$$/d' yourfile.csv > newfile.csv`.
Removing blank lines with white space ... |
21437019 | How to call an executable with parameters from powershell script | 8 | 2014-01-29 16:33:57 | <p>I am seeking help on how to call cmd with specific parameters from a powershell script. So far what I have written is below, but it gives me an error message saying $_cmd is not recognized.</p>
<p>I am trying to pass the from date and to date to a an exe... The from date as you can see needs to be today - 1 and the... | 21,000 | 377,771 | 2014-01-29 21:10:53 | 21,442,190 | 12 | 2014-01-29 20:42:53 | 1,630,171 | 2014-01-29 20:42:53 | https://stackoverflow.com/q/21437019 | https://stackoverflow.com/a/21442190 | <p>Don't make a command string. Simply use the call operator (<code>&</code>):</p>
<pre><code>Write-Host 'Get data from service'
$path = 'D:\DataService'
Push-Location $path
$Date = Get-Date
$DateFrom = $Date.ToString('yyyy-MM-dd HH:mm:ss')
$DateTo = $Date.AddDays(-1).ToString('yyyy-MM-dd')
& ReportG... | <p>Don't make a command string. Simply use the call operator (<code>&</code>):</p> <pre><code>Write-Host 'Get data from service' $path = 'D:\DataService' Push-Location $path $Date = Get-Date $DateFrom = $Date.ToString('yyyy-MM-dd HH:mm:ss') $DateTo = $Date.AddDays(-1).ToString('yyyy-MM-dd') & ReportG... | 526, 24067 | powershell, powershell-2.0 | <h1>How to call an executable with parameters from powershell script</h1>
<p>I am seeking help on how to call cmd with specific parameters from a powershell script. So far what I have written is below, but it gives me an error message saying $_cmd is not recognized.</p>
<p>I am trying to pass the from date and to date... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,928 | bash | # How to call an executable with parameters from powershell script
I am seeking help on how to call cmd with specific parameters from a powershell script. So far what I have written is below, but it gives me an error message saying $_cmd is not recognized.
I am trying to pass the from date and to date to a an exe... ... | Don't make a command string. Simply use the call operator (`&`):
```
Write-Host 'Get data from service'
$path = 'D:\DataService'
Push-Location $path
$Date = Get-Date
$DateFrom = $Date.ToString('yyyy-MM-dd HH:mm:ss')
$DateTo = $Date.AddDays(-1).ToString('yyyy-MM-dd')
& ReportGen.exe -ReportType Data -DateFrom... |
21205723 | how many ways we can create a process in linux using c | 8 | 2014-01-18 14:56:49 | <p>I have confusion in creating a process in Linux. Up to now I thought that we can create the process by calling the following system calls.</p>
<ol>
<li><code>system()</code></li>
<li><code>exec()</code> family of system call</li>
<li><code>fork()</code> system call</li>
</ol>
<p>but:</p>
<ol>
<li><p><strong>syste... | 4,709 | 3,209,809 | 2014-01-18 21:16:30 | 21,205,784 | 12 | 2014-01-18 15:01:58 | 2,003,263 | 2014-01-18 15:12:36 | https://stackoverflow.com/q/21205723 | https://stackoverflow.com/a/21205784 | <p><strong><code>exec</code> family of system call does not call <code>fork</code>, neither it creates a new process.</strong>
It only overwrites the existing process with the new binary.</p>
<p><strong>In <code>linux</code> user programs, <code>fork</code> is the only function to create new process.</strong> Though <... | <p><strong><code>exec</code> family of system call does not call <code>fork</code>, neither it creates a new process.</strong> It only overwrites the existing process with the new binary.</p> <p><strong>In <code>linux</code> user programs, <code>fork</code> is the only function to create new process.</strong> Though <... | 8, 58, 390 | c, linux, shell | <h1>how many ways we can create a process in linux using c</h1>
<p>I have confusion in creating a process in Linux. Up to now I thought that we can create the process by calling the following system calls.</p>
<ol>
<li><code>system()</code></li>
<li><code>exec()</code> family of system call</li>
<li><code>fork()</code... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,929 | bash | # how many ways we can create a process in linux using c
I have confusion in creating a process in Linux. Up to now I thought that we can create the process by calling the following system calls.
1. `system()`
2. `exec()` family of system call
3. `fork()` system call
but:
1. **system():** But as "system" system cal... | **`exec` family of system call does not call `fork`, neither it creates a new process.**
It only overwrites the existing process with the new binary.
**In `linux` user programs, `fork` is the only function to create new process.** Though `fork` internally calls `clone` and other system calls.
In other hands, `system`... |
20179623 | Bash: Remove headers from HTTP response | 8 | 2013-11-24 19:09:11 | <p>If I have some text containing HTTP headers and body, eg:</p>
<pre><code>HTTP/1.1 200 OK
Cache-Control: public, max-age=38
Content-Type: text/html; charset=utf-8
Expires: Fri, 22 Nov 2013 06:15:01 GMT
Last-Modified: Fri, 22 Nov 2013 06:14:01 GMT
Vary: *
X-Frame-Options: SAMEORIGIN
Date: Fri, 22 Nov 2013 06:14:22 GM... | 6,626 | 1,851,186 | 2014-10-21 14:32:45 | 20,179,805 | 12 | 2013-11-24 19:24:44 | 1,945,981 | 2013-11-24 19:35:56 | https://stackoverflow.com/q/20179623 | https://stackoverflow.com/a/20179805 | <p><a href="/questions/tagged/sed" class="post-tag" title="show questions tagged 'sed'" rel="tag">sed</a> can do this:</p>
<pre><code>sed '1,/^$/d' data.txt
</code></pre>
<p>This command deletes everything starting from line 1, and ending at the first occurrence of an empty line (<code>^$</code>). This works ... | <p><a href="/questions/tagged/sed" class="post-tag" title="show questions tagged 'sed'" rel="tag">sed</a> can do this:</p> <pre><code>sed '1,/^$/d' data.txt </code></pre> <p>This command deletes everything starting from line 1, and ending at the first occurrence of an empty line (<code>^$</code>). This works ... | 18, 387, 580, 1271, 5282 | bash, grep, perl, regex, sed | <h1>Bash: Remove headers from HTTP response</h1>
<p>If I have some text containing HTTP headers and body, eg:</p>
<pre><code>HTTP/1.1 200 OK
Cache-Control: public, max-age=38
Content-Type: text/html; charset=utf-8
Expires: Fri, 22 Nov 2013 06:15:01 GMT
Last-Modified: Fri, 22 Nov 2013 06:14:01 GMT
Vary: *
X-Frame-Optio... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,930 | bash | # Bash: Remove headers from HTTP response
If I have some text containing HTTP headers and body, eg:
```
HTTP/1.1 200 OK
Cache-Control: public, max-age=38
Content-Type: text/html; charset=utf-8
Expires: Fri, 22 Nov 2013 06:15:01 GMT
Last-Modified: Fri, 22 Nov 2013 06:14:01 GMT
Vary: *
X-Frame-Options: SAMEORIGIN
Date:... | [sed](/questions/tagged/sed "show questions tagged 'sed'") can do this:
```
sed '1,/^$/d' data.txt
```
This command deletes everything starting from line 1, and ending at the first occurrence of an empty line (`^$`). This works if you have `\n` as a newline character. If you have `\r\n` as a newline character, you ca... |
18468637 | Powershell - User Mapping SQL Server 2012 | 8 | 2013-08-27 14:44:30 | <p>I am trying to script User Mapping for different Login accounts. I have scripted the creation of users and individual server roles, but I can't figure out how to set User Mapping with Powershell, I will also need to set the <code>Database Role membership</code>, in Particular, <code>db_backupoperator</code></p>
<... | 7,356 | 1,385,483 | 2013-08-27 16:27:28 | 18,470,681 | 12 | 2013-08-27 16:15:18 | 1,085,940 | 2013-08-27 16:27:28 | https://stackoverflow.com/q/18468637 | https://stackoverflow.com/a/18470681 | <p>Supposing your login is created</p>
<pre><code>## Creating database user and assigning database role
#get variables
$instanceName = "yourInstance"
$loginName = "testLogin"
$dbUserName = "testUserName"
$databasename = "tempdb"
$roleName = "db_backupoperator"
$server = New-Object -TypeName Microsoft.SqlServer.Ma... | <p>Supposing your login is created</p> <pre><code>## Creating database user and assigning database role #get variables $instanceName = "yourInstance" $loginName = "testLogin" $dbUserName = "testUserName" $databasename = "tempdb" $roleName = "db_backupoperator" $server = New-Object -TypeName Microsoft.SqlServer.Ma... | 22, 72, 526, 74269, 92919 | powershell, sql, sqlps, sql-server, sql-server-2012 | <h1>Powershell - User Mapping SQL Server 2012</h1>
<p>I am trying to script User Mapping for different Login accounts. I have scripted the creation of users and individual server roles, but I can't figure out how to set User Mapping with Powershell, I will also need to set the <code>Database Role membership</code>, i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,931 | bash | # Powershell - User Mapping SQL Server 2012
I am trying to script User Mapping for different Login accounts. I have scripted the creation of users and individual server roles, but I can't figure out how to set User Mapping with Powershell, I will also need to set the `Database Role membership`, in Particular, `db_back... | Supposing your login is created
```
## Creating database user and assigning database role
#get variables
$instanceName = "yourInstance"
$loginName = "testLogin"
$dbUserName = "testUserName"
$databasename = "tempdb"
$roleName = "db_backupoperator"
$server = New-Object -TypeName Microsoft.SqlServer.Management.Smo.S... |
9960465 | How do I get a list of all available shell commands | 8 | 2012-03-31 23:01:56 | <p>In a typical Linux shell (bash) it is possible to to hit tab twice, to get a list of all available shell commands.</p>
<p>Is there a command which has the same behaviour? I want to pipe it into <code>grep</code> and search it.</p>
| 14,221 | 552,671 | 2016-06-05 16:05:03 | 18,280,513 | 12 | 2013-08-16 19:12:22 | 465,035 | 2013-08-16 19:12:22 | https://stackoverflow.com/q/9960465 | https://stackoverflow.com/a/18280513 | <p>You could use compgen. For example:</p>
<pre><code>compgen -c
</code></pre>
<p>You also could grep it, like this:</p>
<pre><code>compgen -c | grep top$
</code></pre>
<p>Source: <a href="http://www.cyberciti.biz/open-source/command-line-hacks/compgen-linux-command/" rel="noreferrer">http://www.cyberciti.biz/open-... | <p>You could use compgen. For example:</p> <pre><code>compgen -c </code></pre> <p>You also could grep it, like this:</p> <pre><code>compgen -c | grep top$ </code></pre> <p>Source: <a href="http://www.cyberciti.biz/open-source/command-line-hacks/compgen-linux-command/" rel="noreferrer">http://www.cyberciti.biz/open-... | 387, 390 | bash, shell | <h1>How do I get a list of all available shell commands</h1>
<p>In a typical Linux shell (bash) it is possible to to hit tab twice, to get a list of all available shell commands.</p>
<p>Is there a command which has the same behaviour? I want to pipe it into <code>grep</code> and search it.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,932 | bash | # How do I get a list of all available shell commands
In a typical Linux shell (bash) it is possible to to hit tab twice, to get a list of all available shell commands.
Is there a command which has the same behaviour? I want to pipe it into `grep` and search it. | You could use compgen. For example:
```
compgen -c
```
You also could grep it, like this:
```
compgen -c | grep top$
```
Source: <http://www.cyberciti.biz/open-source/command-line-hacks/compgen-linux-command/> |
18101208 | Bash script global redirection with exec and write to screen | 8 | 2013-08-07 10:38:09 | <p>I have a large bash script and I want to globally redirect all stdout/stderr to a file, <em>except</em> some progress indicators such specific echo messages. For example, consider the following script</p>
<pre><code>#!/bin/bash
# all stdout and stderr go to out.log
exec &> out.log
special_echo "starting"
... | 4,822 | 2,660,278 | 2018-12-17 00:44:37 | 18,101,327 | 12 | 2013-08-07 10:43:34 | 1,030,675 | 2013-08-07 10:43:34 | https://stackoverflow.com/q/18101208 | https://stackoverflow.com/a/18101327 | <p>Yes, using another file descriptor is the way to go:</p>
<pre><code>#!/bin/bash
exec 3>&1
special_echo () {
echo "$@" >&3
}
exec &> out.log
special_echo "starting"
echo "msg1"
special_echo "middle"
echo "msg2" >&2
special_echo "finished"
</code></pre>
| <p>Yes, using another file descriptor is the way to go:</p> <pre><code>#!/bin/bash exec 3>&1 special_echo () { echo "$@" >&3 } exec &> out.log special_echo "starting" echo "msg1" special_echo "middle" echo "msg2" >&2 special_echo "finished" </code></pre> | 387 | bash | <h1>Bash script global redirection with exec and write to screen</h1>
<p>I have a large bash script and I want to globally redirect all stdout/stderr to a file, <em>except</em> some progress indicators such specific echo messages. For example, consider the following script</p>
<pre><code>#!/bin/bash
# all stdout and ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,933 | bash | # Bash script global redirection with exec and write to screen
I have a large bash script and I want to globally redirect all stdout/stderr to a file, *except* some progress indicators such specific echo messages. For example, consider the following script
```
#!/bin/bash
# all stdout and stderr go to out.log
exec &... | Yes, using another file descriptor is the way to go:
```
#!/bin/bash
exec 3>&1
special_echo () {
echo "$@" >&3
}
exec &> out.log
special_echo "starting"
echo "msg1"
special_echo "middle"
echo "msg2" >&2
special_echo "finished"
``` |
18056286 | why second time cp command is faster | 8 | 2013-08-05 10:45:23 | <p>When I execute <code>cp folder1 folder2 -rf</code>,for the first time it takes around 10 mins. But when it I execute the second command <code>cp folder1 folder3 -rf</code>, it takes around 1 min. <code>folder1</code> contains about 100 000 files.</p>
<p>Why is there run time improvement for the second time? </p>
| 2,335 | 1,391,354 | 2022-05-24 14:26:59 | 18,056,360 | 12 | 2013-08-05 10:49:25 | 2,536,029 | 2013-08-05 11:15:08 | https://stackoverflow.com/q/18056286 | https://stackoverflow.com/a/18056360 | <p>This is because of page caching. Run <code>sync ; echo 3 > /proc/sys/vm/drop_caches</code> to make it slow again.</p>
<p>Further reading:</p>
<ul>
<li><a href="http://jim.studt.net/depository/index.php/flushing-caches-for-benchmarking-in-linux" rel="nofollow noreferrer">http://jim.studt.net/depository/index.php... | <p>This is because of page caching. Run <code>sync ; echo 3 > /proc/sys/vm/drop_caches</code> to make it slow again.</p> <p>Further reading:</p> <ul> <li><a href="http://jim.studt.net/depository/index.php/flushing-caches-for-benchmarking-in-linux" rel="nofollow noreferrer">http://jim.studt.net/depository/index.php... | 58, 390, 722, 1763 | benchmarking, caching, linux, shell | <h1>why second time cp command is faster</h1>
<p>When I execute <code>cp folder1 folder2 -rf</code>,for the first time it takes around 10 mins. But when it I execute the second command <code>cp folder1 folder3 -rf</code>, it takes around 1 min. <code>folder1</code> contains about 100 000 files.</p>
<p>Why is there run... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,934 | bash | # why second time cp command is faster
When I execute `cp folder1 folder2 -rf`,for the first time it takes around 10 mins. But when it I execute the second command `cp folder1 folder3 -rf`, it takes around 1 min. `folder1` contains about 100 000 files.
Why is there run time improvement for the second time? | This is because of page caching. Run `sync ; echo 3 > /proc/sys/vm/drop_caches` to make it slow again.
Further reading:
- <http://jim.studt.net/depository/index.php/flushing-caches-for-benchmarking-in-linux>
- <https://superuser.com/a/319287/236874> |
15718756 | Escaping pipe character in rsh | 8 | 2013-03-30 12:55:49 | <p>I am trying to run this bash command, but I cant get around the "|" pipe character</p>
<p><code>rsh -l user machine "echo "PORTS = 123|456|789" >> conf.cfg"</code></p>
<p>Getting:</p>
<p><code>bash: 456 >> conf.cfg: No such file or directory</code></p>
<p><code>bash: 789: command not found</code></p>... | 22,720 | 247,041 | 2013-03-30 12:57:46 | 15,718,777 | 12 | 2013-03-30 12:57:46 | 1,983,854 | 2013-03-30 12:57:46 | https://stackoverflow.com/q/15718756 | https://stackoverflow.com/a/15718777 | <p>Just escape the pipes and the quotes:</p>
<pre><code>rsh -l user machine "echo \"PORTS = 123\|456\|789\" >> conf.cfg"
</code></pre>
| <p>Just escape the pipes and the quotes:</p> <pre><code>rsh -l user machine "echo \"PORTS = 123\|456\|789\" >> conf.cfg" </code></pre> | 387, 2822 | bash, rsh | <h1>Escaping pipe character in rsh</h1>
<p>I am trying to run this bash command, but I cant get around the "|" pipe character</p>
<p><code>rsh -l user machine "echo "PORTS = 123|456|789" >> conf.cfg"</code></p>
<p>Getting:</p>
<p><code>bash: 456 >> conf.cfg: No such file or directory</code></p>
<p><code... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,935 | bash | # Escaping pipe character in rsh
I am trying to run this bash command, but I cant get around the "|" pipe character
`rsh -l user machine "echo "PORTS = 123|456|789" >> conf.cfg"`
Getting:
`bash: 456 >> conf.cfg: No such file or directory`
`bash: 789: command not found`
Would you know how I can echo `PORTS = 123|4... | Just escape the pipes and the quotes:
```
rsh -l user machine "echo \"PORTS = 123\|456\|789\" >> conf.cfg"
``` |
15708203 | Powershell hashtable keys with special characters | 8 | 2013-03-29 17:23:05 | <p>I'm having trouble trying to access a hashtable with a / in the key. In my case the keys are mime types, and a simple example of the hashtable looks like:</p>
<pre><code>PS H:\> $h
Name Value ... | 5,976 | 1,635 | 2013-03-29 18:49:09 | 15,708,406 | 12 | 2013-03-29 17:34:58 | 9,833 | 2013-03-29 18:49:09 | https://stackoverflow.com/q/15708203 | https://stackoverflow.com/a/15708406 | <p>In my opinion the Key is not a string but an object? I have no problems getting the value both ways:</p>
<pre><code>PS> $h=@{'application/pdf'='application/pdf'}
PS> $h["application/pdf"]
application/pdf
PS> $h."application/pdf"
application/pdf
</code></pre>
| <p>In my opinion the Key is not a string but an object? I have no problems getting the value both ways:</p> <pre><code>PS> $h=@{'application/pdf'='application/pdf'} PS> $h["application/pdf"] application/pdf PS> $h."application/pdf" application/pdf </code></pre> | 526 | powershell | <h1>Powershell hashtable keys with special characters</h1>
<p>I'm having trouble trying to access a hashtable with a / in the key. In my case the keys are mime types, and a simple example of the hashtable looks like:</p>
<pre><code>PS H:\> $h
Name Value ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,936 | bash | # Powershell hashtable keys with special characters
I'm having trouble trying to access a hashtable with a / in the key. In my case the keys are mime types, and a simple example of the hashtable looks like:
```
PS H:\> $h
Name Value ... | In my opinion the Key is not a string but an object? I have no problems getting the value both ways:
```
PS> $h=@{'application/pdf'='application/pdf'}
PS> $h["application/pdf"]
application/pdf
PS> $h."application/pdf"
application/pdf
``` |
15330402 | /dev/stdin with herestring | 8 | 2013-03-11 02:46:21 | <p>I would like a Bash script that can take input from a file or stdin, much like <code>grep</code>, for example</p>
<pre class="lang-none prettyprint-override"><code>$ cat hw.txt
Hello world
$ grep wor hw.txt
Hello world
$ echo 'Hello world' | grep wor
Hello world
$ grep wor <<< 'Hello world'
Hello world
... | 12,107 | 1,002,260 | 2013-03-11 12:41:51 | 15,330,784 | 12 | 2013-03-11 03:35:59 | 302,243 | 2013-03-11 03:35:59 | https://stackoverflow.com/q/15330402 | https://stackoverflow.com/a/15330784 | <p>Using <code>/dev/stdin</code> in this manner can be problematic because you are attempting to get a handle to stdin using a name in the filesystem (<code>/dev/stdin</code>) rather than using the file descriptor which bash has already handed you as stdin (file descriptor 0).</p>
<p>Here's a small script for you to t... | <p>Using <code>/dev/stdin</code> in this manner can be problematic because you are attempting to get a handle to stdin using a name in the filesystem (<code>/dev/stdin</code>) rather than using the file descriptor which bash has already handed you as stdin (file descriptor 0).</p> <p>Here's a small script for you to t... | 387, 1701, 1731, 7449 | bash, cygwin, heredoc, stdin | <h1>/dev/stdin with herestring</h1>
<p>I would like a Bash script that can take input from a file or stdin, much like <code>grep</code>, for example</p>
<pre class="lang-none prettyprint-override"><code>$ cat hw.txt
Hello world
$ grep wor hw.txt
Hello world
$ echo 'Hello world' | grep wor
Hello world
$ grep wor <... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,937 | bash | # /dev/stdin with herestring
I would like a Bash script that can take input from a file or stdin, much like `grep`, for example
```
$ cat hw.txt
Hello world
$ grep wor hw.txt
Hello world
$ echo 'Hello world' | grep wor
Hello world
$ grep wor <<< 'Hello world'
Hello world
```
all works beautifully. However with th... | Using `/dev/stdin` in this manner can be problematic because you are attempting to get a handle to stdin using a name in the filesystem (`/dev/stdin`) rather than using the file descriptor which bash has already handed you as stdin (file descriptor 0).
Here's a small script for you to test:
```
#!/bin/bash
echo "INF... |
14717872 | Split file into unequal chunks in Linux | 8 | 2013-02-05 22:05:02 | <p>I wish to split a large file (with ~ 17M Lines of Strings) into multiple files with varying number of lines in each chunk. Would it be possible to send in an array to the <strong>'<em>split -l</em>'</strong> command like this:</p>
<pre><code>[
1=>1000000,
2=>1000537,
...
]
</code></pre>
<p>so as to send t... | 3,443 | 862,763 | 2013-02-06 21:33:43 | 14,718,746 | 12 | 2013-02-05 23:13:20 | 1,899,640 | 2013-02-06 21:33:43 | https://stackoverflow.com/q/14717872 | https://stackoverflow.com/a/14718746 | <p>Use a compound command:</p>
<pre><code>{
head -n 10000 > output1
head -n 200 > output2
head -n 1234 > output3
cat > remainder
} < yourbigfile
</code></pre>
<p>This also works with loops:</p>
<pre><code>{
i=1
for n in 10000 200 1234
do
head -n $n > output$i
let i++
... | <p>Use a compound command:</p> <pre><code>{ head -n 10000 > output1 head -n 200 > output2 head -n 1234 > output3 cat > remainder } < yourbigfile </code></pre> <p>This also works with loops:</p> <pre><code>{ i=1 for n in 10000 200 1234 do head -n $n > output$i let i++ ... | 34, 58, 387 | bash, linux, unix | <h1>Split file into unequal chunks in Linux</h1>
<p>I wish to split a large file (with ~ 17M Lines of Strings) into multiple files with varying number of lines in each chunk. Would it be possible to send in an array to the <strong>'<em>split -l</em>'</strong> command like this:</p>
<pre><code>[
1=>1000000,
2=>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,938 | bash | # Split file into unequal chunks in Linux
I wish to split a large file (with ~ 17M Lines of Strings) into multiple files with varying number of lines in each chunk. Would it be possible to send in an array to the **'*split -l*'** command like this:
```
[
1=>1000000,
2=>1000537,
...
]
```
so as to send those many ... | Use a compound command:
```
{
head -n 10000 > output1
head -n 200 > output2
head -n 1234 > output3
cat > remainder
} < yourbigfile
```
This also works with loops:
```
{
i=1
for n in 10000 200 1234
do
head -n $n > output$i
let i++
done
cat > remainder
} < yourbigfile
```
This does no... |
14664764 | Passing arguments to Start-Job scriptblock? | 8 | 2013-02-02 17:58:12 | <p>I'd like to setup a cmdlet to start and stop mysql, and I'm trying to do so with Start-Job. the I've got the following in my Powershell profile:</p>
<pre><code>$mysqlpath = "C:\Program Files\MySQL\MySQL Server 5.5\bin"
Function Start-Mysql
{
Start-Job -ScriptBlock { & "$mysqlpath\mysqld.exe" }
}
</code></pr... | 11,699 | 1,572,795 | 2021-09-02 20:48:37 | 14,664,983 | 12 | 2013-02-02 18:21:17 | 381,149 | 2019-09-03 05:35:53 | https://stackoverflow.com/q/14664764 | https://stackoverflow.com/a/14664983 | <p>you have to use the <code>-argumentlist</code> parameter see <a href="http://technet.microsoft.com/en-us/library/hh849698.aspx" rel="nofollow noreferrer">get-help start-job</a> :</p>
<pre><code> start-job -ScriptBlock { & $args[0] } -ArgumentList @($mysqlpath )
</code></pre>
<p>note that in V3 you just have t... | <p>you have to use the <code>-argumentlist</code> parameter see <a href="http://technet.microsoft.com/en-us/library/hh849698.aspx" rel="nofollow noreferrer">get-help start-job</a> :</p> <pre><code> start-job -ScriptBlock { & $args[0] } -ArgumentList @($mysqlpath ) </code></pre> <p>note that in V3 you just have t... | 526, 24067 | powershell, powershell-2.0 | <h1>Passing arguments to Start-Job scriptblock?</h1>
<p>I'd like to setup a cmdlet to start and stop mysql, and I'm trying to do so with Start-Job. the I've got the following in my Powershell profile:</p>
<pre><code>$mysqlpath = "C:\Program Files\MySQL\MySQL Server 5.5\bin"
Function Start-Mysql
{
Start-Job -Script... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,939 | bash | # Passing arguments to Start-Job scriptblock?
I'd like to setup a cmdlet to start and stop mysql, and I'm trying to do so with Start-Job. the I've got the following in my Powershell profile:
```
$mysqlpath = "C:\Program Files\MySQL\MySQL Server 5.5\bin"
Function Start-Mysql
{
Start-Job -ScriptBlock { & "$mysqlpat... | you have to use the `-argumentlist` parameter see [get-help start-job](http://technet.microsoft.com/en-us/library/hh849698.aspx) :
```
start-job -ScriptBlock { & $args[0] } -ArgumentList @($mysqlpath )
```
note that in V3 you just have to use the prefix `using:` before your varname ex:
```
Start-Job -ScriptBlock... |
14408648 | Use $RANDOM in a makefile | 8 | 2013-01-18 22:23:35 | <p>I am making a makefile to rename files with a random number in it (I am a newbie in shell script). I don't understand why, but when I run the file $rand is given the value 'ANDOM'. When I run this outside of the makefile it works.</p>
<p>I run this in the Mac os terminal, in case it's helpful.</p>
<pre><code>all: ... | 16,086 | 1,123,278 | 2015-04-03 04:15:56 | 14,409,906 | 12 | 2013-01-19 00:41:34 | 15,168 | 2013-01-19 00:41:34 | https://stackoverflow.com/q/14408648 | https://stackoverflow.com/a/14409906 | <ol>
<li><p>Wouldn't it be easier/better to use a date/time stamp so that the renamed files are listed in date order?</p></li>
<li><p>You need to use two <code>$</code> signs in the <code>makefile</code> for each <code>$</code> that you want the shell to see.</p></li>
</ol>
<p>Thus:</p>
<pre><code>all: renamefiles
r... | <ol> <li><p>Wouldn't it be easier/better to use a date/time stamp so that the renamed files are listed in date order?</p></li> <li><p>You need to use two <code>$</code> signs in the <code>makefile</code> for each <code>$</code> that you want the shell to see.</p></li> </ol> <p>Thus:</p> <pre><code>all: renamefiles r... | 390, 391, 4301 | makefile, shell, terminal | <h1>Use $RANDOM in a makefile</h1>
<p>I am making a makefile to rename files with a random number in it (I am a newbie in shell script). I don't understand why, but when I run the file $rand is given the value 'ANDOM'. When I run this outside of the makefile it works.</p>
<p>I run this in the Mac os terminal, in case ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,940 | bash | # Use $RANDOM in a makefile
I am making a makefile to rename files with a random number in it (I am a newbie in shell script). I don't understand why, but when I run the file $rand is given the value 'ANDOM'. When I run this outside of the makefile it works.
I run this in the Mac os terminal, in case it's helpful.
`... | 1. Wouldn't it be easier/better to use a date/time stamp so that the renamed files are listed in date order?
2. You need to use two `$` signs in the `makefile` for each `$` that you want the shell to see.
Thus:
```
all: renamefiles
renamefiles:
rand=$$RANDOM && \
mv myfile.css $$rand-myfile.css && \
... |
14340113 | Bash (grep) regex performing unexpectedly | 8 | 2013-01-15 14:41:36 | <p>I have a text file, which contains a date in the form of <code>dd/mm/yyyy</code> (e.g 20/12/2012).</p>
<p>I am trying to use <code>grep</code> to parse the date and show it in the terminal, and it is successful,
until I meet a certain case:</p>
<p>These are my test cases: </p>
<ul>
<li><code>grep -E "\d*"</code>... | 4,952 | 1,426,969 | 2013-01-15 16:07:40 | 14,340,237 | 12 | 2013-01-15 14:49:17 | 115,845 | 2013-01-15 15:06:41 | https://stackoverflow.com/q/14340113 | https://stackoverflow.com/a/14340237 | <p>The syntax you used (<code>\d</code>) is not recognised by <a href="http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_04_01.html#sect_04_01_03" rel="noreferrer">Bash's Extended regex</a>. </p>
<p>Use <code>grep -P</code> instead which uses Perl regex (PCRE). For example:</p>
<pre><code>grep -P "\d+/\d+/\d+" input... | <p>The syntax you used (<code>\d</code>) is not recognised by <a href="http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_04_01.html#sect_04_01_03" rel="noreferrer">Bash's Extended regex</a>. </p> <p>Use <code>grep -P</code> instead which uses Perl regex (PCRE). For example:</p> <pre><code>grep -P "\d+/\d+/\d+" input... | 18, 387, 390, 1271 | bash, grep, regex, shell | <h1>Bash (grep) regex performing unexpectedly</h1>
<p>I have a text file, which contains a date in the form of <code>dd/mm/yyyy</code> (e.g 20/12/2012).</p>
<p>I am trying to use <code>grep</code> to parse the date and show it in the terminal, and it is successful,
until I meet a certain case:</p>
<p>These are my te... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,941 | bash | # Bash (grep) regex performing unexpectedly
I have a text file, which contains a date in the form of `dd/mm/yyyy` (e.g 20/12/2012).
I am trying to use `grep` to parse the date and show it in the terminal, and it is successful,
until I meet a certain case:
These are my test cases:
- `grep -E "\d*"` returns 20/12/201... | The syntax you used (`\d`) is not recognised by [Bash's Extended regex](http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_04_01.html#sect_04_01_03).
Use `grep -P` instead which uses Perl regex (PCRE). For example:
```
grep -P "\d+/\d+/\d+" input.txt
grep -P "\d{2}/\d{2}/\d{4}" input.txt # more restrictive
```
Or, ... |
14282208 | How can I use Groovy to execute a shell command that has backticks? | 8 | 2013-01-11 16:17:17 | <p>I’m unable to use Groovy to execute a shell command that has backticks. A simplified example:</p>
<pre><code>println "echo `date`".execute().text
</code></pre>
<p>I searched around and tried to figure out how to escape them somehow, but without luck.</p>
| 12,294 | 363,281 | 2013-01-14 22:36:28 | 14,282,313 | 12 | 2013-01-11 16:22:43 | 1,517,161 | 2013-01-11 16:50:40 | https://stackoverflow.com/q/14282208 | https://stackoverflow.com/a/14282313 | <p>What happens if you try:</p>
<pre><code>println ["bash", "-c", "echo `date`"].execute().text
</code></pre>
<p>My guess would be that with </p>
<pre><code>"echo `date`".execute()
</code></pre>
<p>java's <code>Runtime#exec(String)</code> would be used underneath, if you were calling <code>execute()</code> on a St... | <p>What happens if you try:</p> <pre><code>println ["bash", "-c", "echo `date`"].execute().text </code></pre> <p>My guess would be that with </p> <pre><code>"echo `date`".execute() </code></pre> <p>java's <code>Runtime#exec(String)</code> would be used underneath, if you were calling <code>execute()</code> on a St... | 387, 390, 849, 28438 | backticks, bash, groovy, shell | <h1>How can I use Groovy to execute a shell command that has backticks?</h1>
<p>I’m unable to use Groovy to execute a shell command that has backticks. A simplified example:</p>
<pre><code>println "echo `date`".execute().text
</code></pre>
<p>I searched around and tried to figure out how to escape them somehow, but w... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,942 | bash | # How can I use Groovy to execute a shell command that has backticks?
I’m unable to use Groovy to execute a shell command that has backticks. A simplified example:
```
println "echo `date`".execute().text
```
I searched around and tried to figure out how to escape them somehow, but without luck. | What happens if you try:
```
println ["bash", "-c", "echo `date`"].execute().text
```
My guess would be that with
```
"echo `date`".execute()
```
java's `Runtime#exec(String)` would be used underneath, if you were calling `execute()` on a String. In which case, this simply tokenizes the string and executes the prog... |
13394196 | How to check if a Powershell script is running remotely | 8 | 2012-11-15 09:01:04 | <p>I have a script that can be run either locally or remotely (via WinRM), however I would like it to behave slightly differently when run on a remote machine. I realise that I can pass in a switch to the script to identify whether it is running locally or remotely, but I want to know if it is possible for the script ... | 7,009 | 83,282 | 2015-09-02 23:41:25 | 13,395,178 | 12 | 2012-11-15 10:04:52 | 67,392 | 2012-11-15 10:04:52 | https://stackoverflow.com/q/13394196 | https://stackoverflow.com/a/13395178 | <p><code>Get-Host</code> returns, amongst other information a <code>Name</code>:</p>
<pre>
PS> (Get-Host).Name
ConsoleHost
PS> (Invoke-Command -ComputerName dev2 -Script {Get-Host}).Name
ServerRemoteHost
</pre>
| <p><code>Get-Host</code> returns, amongst other information a <code>Name</code>:</p> <pre> PS> (Get-Host).Name ConsoleHost PS> (Invoke-Command -ComputerName dev2 -Script {Get-Host}).Name ServerRemoteHost </pre> | 526, 63177 | powershell, powershell-remoting | <h1>How to check if a Powershell script is running remotely</h1>
<p>I have a script that can be run either locally or remotely (via WinRM), however I would like it to behave slightly differently when run on a remote machine. I realise that I can pass in a switch to the script to identify whether it is running locally ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,943 | bash | # How to check if a Powershell script is running remotely
I have a script that can be run either locally or remotely (via WinRM), however I would like it to behave slightly differently when run on a remote machine. I realise that I can pass in a switch to the script to identify whether it is running locally or remotel... | `Get-Host` returns, amongst other information a `Name`:
```
PS> (Get-Host).Name
ConsoleHost
PS> (Invoke-Command -ComputerName dev2 -Script {Get-Host}).Name
ServerRemoteHost
``` |
13322119 | How to make script in linux use my interpteter and work? (#!) | 8 | 2012-11-10 12:36:40 | <p>I've made a simple shell for linux. It's reading line by line with getline() until ctrl+d (eof/-1) is entered into standard input.</p>
<p>While entering into stdin line by line code like that:</p>
<pre><code>ls -al &
ls -a -l
</code></pre>
<p>My shell works pretty well.</p>
<p>I've tried to run script throug... | 267 | 1,162,289 | 2012-11-10 13:26:37 | 13,322,323 | 12 | 2012-11-10 13:09:08 | 856,199 | 2012-11-10 13:26:37 | https://stackoverflow.com/q/13322119 | https://stackoverflow.com/a/13322323 | <p>Your shell must accept command line arguments. In this case, your program will be called like this:</p>
<pre>/home/arbuz/Patryk/projekt/a.out your_script</pre>
<p>So you'll need a <code>main()</code> of this signature:</p>
<pre><code>int main(int argc, char* argv[])
</code></pre>
<p>and then parse the arguments.... | <p>Your shell must accept command line arguments. In this case, your program will be called like this:</p> <pre>/home/arbuz/Patryk/projekt/a.out your_script</pre> <p>So you'll need a <code>main()</code> of this signature:</p> <pre><code>int main(int argc, char* argv[]) </code></pre> <p>and then parse the arguments.... | 8, 58, 390 | c, linux, shell | <h1>How to make script in linux use my interpteter and work? (#!)</h1>
<p>I've made a simple shell for linux. It's reading line by line with getline() until ctrl+d (eof/-1) is entered into standard input.</p>
<p>While entering into stdin line by line code like that:</p>
<pre><code>ls -al &
ls -a -l
</code></pre>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,944 | bash | # How to make script in linux use my interpteter and work? (#!)
I've made a simple shell for linux. It's reading line by line with getline() until ctrl+d (eof/-1) is entered into standard input.
While entering into stdin line by line code like that:
```
ls -al &
ls -a -l
```
My shell works pretty well.
I've tried ... | Your shell must accept command line arguments. In this case, your program will be called like this:
```
/home/arbuz/Patryk/projekt/a.out your_script
```
So you'll need a `main()` of this signature:
```
int main(int argc, char* argv[])
```
and then parse the arguments. `argc` contains the amount of arguments. The sc... |
13241964 | How do I get a user's friendly username on UNIX? | 8 | 2012-11-05 23:17:18 | <p>I want to get the "friendly" name, not the username, at least if such a string exists for the given user. Things I've tried:</p>
<pre><code>whoami
jamesarosen
id -un
jamesarosen
id -p
uid jamesarosen
groups staff com.apple.access_screensharing ...
id -P
jamesarosen:********:501:20::0:0:James A. Rosen:/Users/jam... | 8,541 | 1,190 | 2018-03-13 00:53:48 | 13,242,044 | 12 | 2012-11-05 23:24:24 | 1,301,972 | 2012-11-05 23:24:24 | https://stackoverflow.com/q/13241964 | https://stackoverflow.com/a/13242044 | <h3>Parse the GECOS Field for User's Full Name</h3>
<p>The format of /etc/passwd and most of the <a href="http://en.wikipedia.org/wiki/Gecos_field">GECOS field</a> is extremely well standardized across Unix-like systems. If you find an exception, by all means let us know. Meanwhile, the easiest way to get what you wan... | <h3>Parse the GECOS Field for User's Full Name</h3> <p>The format of /etc/passwd and most of the <a href="http://en.wikipedia.org/wiki/Gecos_field">GECOS field</a> is extremely well standardized across Unix-like systems. If you find an exception, by all means let us know. Meanwhile, the easiest way to get what you wan... | 34, 387 | bash, unix | <h1>How do I get a user's friendly username on UNIX?</h1>
<p>I want to get the "friendly" name, not the username, at least if such a string exists for the given user. Things I've tried:</p>
<pre><code>whoami
jamesarosen
id -un
jamesarosen
id -p
uid jamesarosen
groups staff com.apple.access_screensharing ...
id -P
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,945 | bash | # How do I get a user's friendly username on UNIX?
I want to get the "friendly" name, not the username, at least if such a string exists for the given user. Things I've tried:
```
whoami
jamesarosen
id -un
jamesarosen
id -p
uid jamesarosen
groups staff com.apple.access_screensharing ...
id -P
jamesarosen:********... | ### Parse the GECOS Field for User's Full Name
The format of /etc/passwd and most of the [GECOS field](http://en.wikipedia.org/wiki/Gecos_field) is extremely well standardized across Unix-like systems. If you find an exception, by all means let us know. Meanwhile, the easiest way to get what you want on a Unix-like sy... |
12693327 | Running a PowerShell script as administrator without typing in passwords | 8 | 2012-10-02 15:24:07 | <p>I wrote a script that will switch between having a computer connect via Wi-Fi or wired Internet simply by running a batch file. I wrote this because I don't like having to type in my username and password to switch between the two every time.</p>
<p>NOTE: I HAVE to have UAC enabled so unfortunately just turning it ... | 103,305 | 1,315,828 | 2020-11-12 04:36:06 | 12,694,463 | 12 | 2012-10-02 16:34:01 | 153,982 | 2012-10-02 21:00:26 | https://stackoverflow.com/q/12693327 | https://stackoverflow.com/a/12694463 | <p>You can start a new, elevated PowerShell process to run your script e.g.:</p>
<pre><code>Start-Process PowerShell -verb runas -ArgumentList '-noexit','-File','path-to-script'
</code></pre>
<p>If you don't want the PowerShell window to hang around then get rid of the <code>'-noexit'</code> but for debugging the lau... | <p>You can start a new, elevated PowerShell process to run your script e.g.:</p> <pre><code>Start-Process PowerShell -verb runas -ArgumentList '-noexit','-File','path-to-script' </code></pre> <p>If you don't want the PowerShell window to hang around then get rid of the <code>'-noexit'</code> but for debugging the lau... | 526, 1980 | powershell, uac | <h1>Running a PowerShell script as administrator without typing in passwords</h1>
<p>I wrote a script that will switch between having a computer connect via Wi-Fi or wired Internet simply by running a batch file. I wrote this because I don't like having to type in my username and password to switch between the two ever... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,946 | bash | # Running a PowerShell script as administrator without typing in passwords
I wrote a script that will switch between having a computer connect via Wi-Fi or wired Internet simply by running a batch file. I wrote this because I don't like having to type in my username and password to switch between the two every time.
... | You can start a new, elevated PowerShell process to run your script e.g.:
```
Start-Process PowerShell -verb runas -ArgumentList '-noexit','-File','path-to-script'
```
If you don't want the PowerShell window to hang around then get rid of the `'-noexit'` but for debugging the launch of your script, it is useful.
If ... |
12590490 | Splitting Filename delimited by period (.) | 8 | 2012-09-25 20:24:19 | <p>I'm writting an sh file where I have var as: </p>
<pre><code>c=aabbcc.DP.09-25-2012_14_17.dmp
</code></pre>
<p>i want to copy only initial part in another var like:</p>
<pre><code>d = aabbcc
</code></pre>
<p>How should I trim my var?</p>
| 20,687 | 730,549 | 2012-10-01 08:35:54 | 12,590,520 | 12 | 2012-09-25 20:26:43 | 95,382 | 2012-09-25 20:26:43 | https://stackoverflow.com/q/12590490 | https://stackoverflow.com/a/12590520 | <p>If by <code>sh</code> you mean <code>bash</code>, then</p>
<pre><code>d="${c%%.*}"
</code></pre>
<p>otherwise</p>
<pre><code>d="`echo "$d"|cut -d. -f1`"
</code></pre>
<p>will do, perhaps.</p>
| <p>If by <code>sh</code> you mean <code>bash</code>, then</p> <pre><code>d="${c%%.*}" </code></pre> <p>otherwise</p> <pre><code>d="`echo "$d"|cut -d. -f1`" </code></pre> <p>will do, perhaps.</p> | 990, 10327 | awk, sh | <h1>Splitting Filename delimited by period (.)</h1>
<p>I'm writting an sh file where I have var as: </p>
<pre><code>c=aabbcc.DP.09-25-2012_14_17.dmp
</code></pre>
<p>i want to copy only initial part in another var like:</p>
<pre><code>d = aabbcc
</code></pre>
<p>How should I trim my var?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,947 | bash | # Splitting Filename delimited by period (.)
I'm writting an sh file where I have var as:
```
c=aabbcc.DP.09-25-2012_14_17.dmp
```
i want to copy only initial part in another var like:
```
d = aabbcc
```
How should I trim my var? | If by `sh` you mean `bash`, then
```
d="${c%%.*}"
```
otherwise
```
d="`echo "$d"|cut -d. -f1`"
```
will do, perhaps. |
11666070 | Progress bar during smbclient put | 8 | 2012-07-26 09:15:42 | <p>I'm trying to show a progress bar during a remote copy using smbclient put, maybe using <strong>pv</strong> or <strong>dialog</strong>, or any other option.</p>
<p>The smbclient-put command il working fine: </p>
<pre><code>smbclient //usbrouter/backup --user=myusername mypassword -c "put /media/DOC/BackupAuto/work... | 8,218 | 902,364 | 2020-04-12 22:09:05 | 11,666,660 | 12 | 2012-07-26 09:47:21 | 430,766 | 2017-06-20 09:34:02 | https://stackoverflow.com/q/11666070 | https://stackoverflow.com/a/11666660 | <p>What I do when I want to check up on a file transfer operation that either doesn't support progress bars or I forgot to start it in a progress bar mode is this.</p>
<p>Figure out the total size of your local copy of the file (<code>work_backup.tar.gz</code>) e.g. with <code>ls</code>, <code>stat</code> or <code>du<... | <p>What I do when I want to check up on a file transfer operation that either doesn't support progress bars or I forgot to start it in a progress bar mode is this.</p> <p>Figure out the total size of your local copy of the file (<code>work_backup.tar.gz</code>) e.g. with <code>ls</code>, <code>stat</code> or <code>du<... | 58, 387 | bash, linux | <h1>Progress bar during smbclient put</h1>
<p>I'm trying to show a progress bar during a remote copy using smbclient put, maybe using <strong>pv</strong> or <strong>dialog</strong>, or any other option.</p>
<p>The smbclient-put command il working fine: </p>
<pre><code>smbclient //usbrouter/backup --user=myusername my... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,948 | bash | # Progress bar during smbclient put
I'm trying to show a progress bar during a remote copy using smbclient put, maybe using **pv** or **dialog**, or any other option.
The smbclient-put command il working fine:
```
smbclient //usbrouter/backup --user=myusername mypassword -c "put /media/DOC/BackupAuto/work_backup.tar... | What I do when I want to check up on a file transfer operation that either doesn't support progress bars or I forgot to start it in a progress bar mode is this.
Figure out the total size of your local copy of the file (`work_backup.tar.gz`) e.g. with `ls`, `stat` or `du`. Then go to the location of the target file (ei... |
11618428 | How to execute shell builtin from Scala | 8 | 2012-07-23 18:37:10 | <p>I need to check some system settings like <code>ulimit -n</code> from Scala script in Linux. Had I to deal with ordinary commands I would use <code>scala.sys.process</code> package like:</p>
<pre><code>import scala.sys.process._
println("ls -lha".!!)
</code></pre>
<p>Unfortunately this doesn't work for shell built... | 5,334 | 1,196,771 | 2012-07-23 19:06:59 | 11,618,758 | 12 | 2012-07-23 19:01:29 | 53,013 | 2012-07-23 19:06:59 | https://stackoverflow.com/q/11618428 | https://stackoverflow.com/a/11618758 | <p>When strings are converted to a shell command, parameters are separated by space. The conventions you tried are <em>shell</em> conventions, so you'd need a shell to begin with to apply them.</p>
<p>If you want more control over what each parameter is, use a <code>Seq[String]</code> instead of a <code>String</code>,... | <p>When strings are converted to a shell command, parameters are separated by space. The conventions you tried are <em>shell</em> conventions, so you'd need a shell to begin with to apply them.</p> <p>If you want more control over what each parameter is, use a <code>Seq[String]</code> instead of a <code>String</code>,... | 58, 390, 3143 | linux, scala, shell | <h1>How to execute shell builtin from Scala</h1>
<p>I need to check some system settings like <code>ulimit -n</code> from Scala script in Linux. Had I to deal with ordinary commands I would use <code>scala.sys.process</code> package like:</p>
<pre><code>import scala.sys.process._
println("ls -lha".!!)
</code></pre>
<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,949 | bash | # How to execute shell builtin from Scala
I need to check some system settings like `ulimit -n` from Scala script in Linux. Had I to deal with ordinary commands I would use `scala.sys.process` package like:
```
import scala.sys.process._
println("ls -lha".!!)
```
Unfortunately this doesn't work for shell builtins. I... | When strings are converted to a shell command, parameters are separated by space. The conventions you tried are *shell* conventions, so you'd need a shell to begin with to apply them.
If you want more control over what each parameter is, use a `Seq[String]` instead of a `String`, or one of the `Process` factories that... |
11369836 | select -first 1 on a large file | 8 | 2012-07-06 21:24:47 | <p>I am trying to run the following command on a very large text file. However, it's very slow</p>
<pre><code>((cat largefile.txt | select -first 1).split(",")).count()
</code></pre>
<p>Is an alternative fast way in powershell? It seems the command will scan the whole file no matter what. </p>
| 6,780 | 825,920 | 2016-05-13 18:34:25 | 11,369,924 | 12 | 2012-07-06 21:32:46 | 1,021,945 | 2012-07-06 21:45:12 | https://stackoverflow.com/q/11369836 | https://stackoverflow.com/a/11369924 | <p>To only get the first x number of lines in a text file, use the –totalcount parameter:</p>
<pre><code>((Get-Content largefile.txt -totalcount 1).split(",")).count
</code></pre>
| <p>To only get the first x number of lines in a text file, use the –totalcount parameter:</p> <pre><code>((Get-Content largefile.txt -totalcount 1).split(",")).count </code></pre> | 526 | powershell | <h1>select -first 1 on a large file</h1>
<p>I am trying to run the following command on a very large text file. However, it's very slow</p>
<pre><code>((cat largefile.txt | select -first 1).split(",")).count()
</code></pre>
<p>Is an alternative fast way in powershell? It seems the command will scan the whole file no ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,950 | bash | # select -first 1 on a large file
I am trying to run the following command on a very large text file. However, it's very slow
```
((cat largefile.txt | select -first 1).split(",")).count()
```
Is an alternative fast way in powershell? It seems the command will scan the whole file no matter what. | To only get the first x number of lines in a text file, use the –totalcount parameter:
```
((Get-Content largefile.txt -totalcount 1).split(",")).count
``` |
10840196 | aborting git pre-commit hook when var_dump present | 8 | 2012-05-31 19:39:36 | <p>I am trying (but failing miserably) to make a git pre-commit hook that checks for the presence of a var_dump in my modified files and exits if it finds one. The problem that I'm having is that it appears to always be aborting the commit. Here is the contents of my pre-commit file:</p>
<pre><code>VAR=$(git diff | gr... | 5,260 | 435,471 | 2018-11-14 12:20:00 | 10,840,525 | 12 | 2012-05-31 20:05:44 | 718,180 | 2012-05-31 20:11:50 | https://stackoverflow.com/q/10840196 | https://stackoverflow.com/a/10840525 | <p>First of all, note that plain <code>git diff</code> gives the difference between the working tree and the index (i.e. what can still be staged), not what is about to be committed. Use <code>git diff --cached</code> to see what is about to be committed.</p>
<p>The second thing I encountered as I was experimenting w... | <p>First of all, note that plain <code>git diff</code> gives the difference between the working tree and the index (i.e. what can still be staged), not what is about to be committed. Use <code>git diff --cached</code> to see what is about to be committed.</p> <p>The second thing I encountered as I was experimenting w... | 119, 387, 43087 | bash, git, githooks | <h1>aborting git pre-commit hook when var_dump present</h1>
<p>I am trying (but failing miserably) to make a git pre-commit hook that checks for the presence of a var_dump in my modified files and exits if it finds one. The problem that I'm having is that it appears to always be aborting the commit. Here is the content... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,951 | bash | # aborting git pre-commit hook when var_dump present
I am trying (but failing miserably) to make a git pre-commit hook that checks for the presence of a var_dump in my modified files and exits if it finds one. The problem that I'm having is that it appears to always be aborting the commit. Here is the contents of my p... | First of all, note that plain `git diff` gives the difference between the working tree and the index (i.e. what can still be staged), not what is about to be committed. Use `git diff --cached` to see what is about to be committed.
The second thing I encountered as I was experimenting was that using `if [ -z $VAR ]` di... |
10535816 | My powershell script is printing a '1' before my expected output. Why? | 8 | 2012-05-10 14:10:19 | <p>I wrote a simple powershell script that checks the number of tickets in a PSA service board and outputs the number of tickets and a color associated with it. However, my script is printing a '1' before the results. I am very new to powershell, and I can't seem to find the line that would print this. Any help would b... | 6,018 | 1,203,147 | 2018-12-04 09:23:00 | 10,536,005 | 12 | 2012-05-10 14:19:53 | 311,712 | 2012-05-10 14:19:53 | https://stackoverflow.com/q/10535816 | https://stackoverflow.com/a/10536005 | <pre><code>$SqlAdapter.Fill($DataSet) | Out-Null
</code></pre>
<p>Read here about <a href="http://msdn.microsoft.com/en-us/library/zxkb3c3d.aspx">DbDataAdapter.Fill</a> and its return value:</p>
<p>Type: System.Int32
The number of rows successfully added to or refreshed in the DataSet. This does not include rows affe... | <pre><code>$SqlAdapter.Fill($DataSet) | Out-Null </code></pre> <p>Read here about <a href="http://msdn.microsoft.com/en-us/library/zxkb3c3d.aspx">DbDataAdapter.Fill</a> and its return value:</p> <p>Type: System.Int32 The number of rows successfully added to or refreshed in the DataSet. This does not include rows affe... | 526, 24067 | powershell, powershell-2.0 | <h1>My powershell script is printing a '1' before my expected output. Why?</h1>
<p>I wrote a simple powershell script that checks the number of tickets in a PSA service board and outputs the number of tickets and a color associated with it. However, my script is printing a '1' before the results. I am very new to power... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,952 | bash | # My powershell script is printing a '1' before my expected output. Why?
I wrote a simple powershell script that checks the number of tickets in a PSA service board and outputs the number of tickets and a color associated with it. However, my script is printing a '1' before the results. I am very new to powershell, an... | ```
$SqlAdapter.Fill($DataSet) | Out-Null
```
Read here about [DbDataAdapter.Fill](http://msdn.microsoft.com/en-us/library/zxkb3c3d.aspx) and its return value:
Type: System.Int32
The number of rows successfully added to or refreshed in the DataSet. This does not include rows affected by statements that do not return ... |
10405515 | piping in shell via Python subprocess module | 8 | 2012-05-01 22:53:29 | <p>So I'm trying to query for the top 3 CPU "intensive" processes on a given machine, and I found this shell command to do it: <code>ps -eo pcpu,pid,user,args | sort -k 1 -r | head -3</code></p>
<p>I want to use this data inside a Python script, so I need to be able to capture the output of the above command via the <... | 9,170 | 613,973 | 2013-02-26 22:29:40 | 10,405,562 | 12 | 2012-05-01 22:59:26 | 35,070 | 2012-05-01 22:59:26 | https://stackoverflow.com/q/10405515 | https://stackoverflow.com/a/10405562 | <p>You can pass the <code>shell=True</code> argument to execute the plain shell command:</p>
<pre><code>import subprocess
subprocess.check_output('ps -eo pcpu,pid,user,args | sort -k 1 -r | head -3',
shell=True)
</code></pre>
<p>Alternatively, use the sorting options of ps and Python's built-i... | <p>You can pass the <code>shell=True</code> argument to execute the plain shell command:</p> <pre><code>import subprocess subprocess.check_output('ps -eo pcpu,pid,user,args | sort -k 1 -r | head -3', shell=True) </code></pre> <p>Alternatively, use the sorting options of ps and Python's built-i... | 16, 390, 2348, 5813 | pipe, python, shell, subprocess | <h1>piping in shell via Python subprocess module</h1>
<p>So I'm trying to query for the top 3 CPU "intensive" processes on a given machine, and I found this shell command to do it: <code>ps -eo pcpu,pid,user,args | sort -k 1 -r | head -3</code></p>
<p>I want to use this data inside a Python script, so I need to be abl... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,953 | bash | # piping in shell via Python subprocess module
So I'm trying to query for the top 3 CPU "intensive" processes on a given machine, and I found this shell command to do it: `ps -eo pcpu,pid,user,args | sort -k 1 -r | head -3`
I want to use this data inside a Python script, so I need to be able to capture the output of ... | You can pass the `shell=True` argument to execute the plain shell command:
```
import subprocess
subprocess.check_output('ps -eo pcpu,pid,user,args | sort -k 1 -r | head -3',
shell=True)
```
Alternatively, use the sorting options of ps and Python's built-in string functions like this:
```
raw... |
9217120 | How to trigger T4 template from PowerShell script | 8 | 2012-02-09 19:05:59 | <p>In my VS2010 solution I have set of Powershell scripts and T4 templates based on T4Scaffolding NuGet, everything is working fine with scaffolding and related T4's, but in one of my scripts I need to trigger a T4 template located in another project. </p>
<p>Any simple Powershel cmdlet for this? to just run the templ... | 4,165 | 365,469 | 2022-08-30 16:36:07 | 9,251,834 | 12 | 2012-02-12 19:17:36 | 753,279 | 2012-02-12 19:17:36 | https://stackoverflow.com/q/9217120 | https://stackoverflow.com/a/9251834 | <p>It looks like you can just invoke their command line utility, so you could create a script that just takes the location of your .tt file.</p>
<pre><code>param([string] $T4Template)
& "C:\Program Files (x86)\Common Files\microsoft shared\TextTemplating\10.0\TextTransform.exe" $T4Template
</code></pre>
<p>Save ... | <p>It looks like you can just invoke their command line utility, so you could create a script that just takes the location of your .tt file.</p> <pre><code>param([string] $T4Template) & "C:\Program Files (x86)\Common Files\microsoft shared\TextTemplating\10.0\TextTransform.exe" $T4Template </code></pre> <p>Save ... | 526, 767, 2397, 14456 | code-generation, powershell, t4, visual-studio-2010 | <h1>How to trigger T4 template from PowerShell script</h1>
<p>In my VS2010 solution I have set of Powershell scripts and T4 templates based on T4Scaffolding NuGet, everything is working fine with scaffolding and related T4's, but in one of my scripts I need to trigger a T4 template located in another project. </p>
<p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,954 | bash | # How to trigger T4 template from PowerShell script
In my VS2010 solution I have set of Powershell scripts and T4 templates based on T4Scaffolding NuGet, everything is working fine with scaffolding and related T4's, but in one of my scripts I need to trigger a T4 template located in another project.
Any simple Powers... | It looks like you can just invoke their command line utility, so you could create a script that just takes the location of your .tt file.
```
param([string] $T4Template)
& "C:\Program Files (x86)\Common Files\microsoft shared\TextTemplating\10.0\TextTransform.exe" $T4Template
```
Save above as ExecTextTransform.ps1 ... |
9117274 | Do I need to generate a second file to sort a file? | 8 | 2012-02-02 17:49:55 | <p>I want to sort a bunch of files. I can do</p>
<pre><code>sort file.txt > foo.txt
mv foo.txt file.txt
</code></pre>
<p>but do I need this second file? </p>
<p>(I tried <code>sort file.txt > file.txt</code> of course, but then I just ended up with an empty file.)</p>
| 5,177 | 662,939 | 2016-02-23 03:02:04 | 9,117,356 | 12 | 2012-02-02 17:54:59 | 377,639 | 2012-02-02 17:54:59 | https://stackoverflow.com/q/9117274 | https://stackoverflow.com/a/9117356 | <p>Try:</p>
<pre><code>sort -o file.txt file.txt
</code></pre>
<p>See <a href="http://ss64.com/bash/sort.html" rel="noreferrer">http://ss64.com/bash/sort.html</a></p>
<pre><code>`-o OUTPUT-FILE'
Write output to OUTPUT-FILE instead of standard output. If
OUTPUT-FILE is one of the input files, `sort' copies... | <p>Try:</p> <pre><code>sort -o file.txt file.txt </code></pre> <p>See <a href="http://ss64.com/bash/sort.html" rel="noreferrer">http://ss64.com/bash/sort.html</a></p> <pre><code>`-o OUTPUT-FILE' Write output to OUTPUT-FILE instead of standard output. If OUTPUT-FILE is one of the input files, `sort' copies... | 134, 387, 390, 724 | bash, file-io, shell, sorting | <h1>Do I need to generate a second file to sort a file?</h1>
<p>I want to sort a bunch of files. I can do</p>
<pre><code>sort file.txt > foo.txt
mv foo.txt file.txt
</code></pre>
<p>but do I need this second file? </p>
<p>(I tried <code>sort file.txt > file.txt</code> of course, but then I just ended up with a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,955 | bash | # Do I need to generate a second file to sort a file?
I want to sort a bunch of files. I can do
```
sort file.txt > foo.txt
mv foo.txt file.txt
```
but do I need this second file?
(I tried `sort file.txt > file.txt` of course, but then I just ended up with an empty file.) | Try:
```
sort -o file.txt file.txt
```
See <http://ss64.com/bash/sort.html>
```
`-o OUTPUT-FILE'
Write output to OUTPUT-FILE instead of standard output. If
OUTPUT-FILE is one of the input files, `sort' copies it to a
temporary file before sorting and writing the output to
OUTPUT-FILE.
``` |
8333880 | While loop, how to read from second line of text file | 8 | 2011-11-30 22:28:38 | <p>i've tried everything for the past 2 hours to get this working but my experience in shell and programming is limited.</p>
<p>I have a loop</p>
<pre><code>while IFS="," read var1 var2 var3 var4 var5 ; do
statements here...
done < $file
</code></pre>
<p>Now the operation inside statement is to read from a text... | 18,185 | 1,055,321 | 2014-06-09 17:57:28 | 8,334,030 | 12 | 2011-11-30 22:40:04 | 149,872 | 2011-11-30 22:40:04 | https://stackoverflow.com/q/8333880 | https://stackoverflow.com/a/8334030 | <p>Use sed to "delete" the first line from the input passed to the while loop</p>
<pre><code>sed 1d $file | while ...
do
your statements here
done
</code></pre>
| <p>Use sed to "delete" the first line from the input passed to the while loop</p> <pre><code>sed 1d $file | while ... do your statements here done </code></pre> | 387 | bash | <h1>While loop, how to read from second line of text file</h1>
<p>i've tried everything for the past 2 hours to get this working but my experience in shell and programming is limited.</p>
<p>I have a loop</p>
<pre><code>while IFS="," read var1 var2 var3 var4 var5 ; do
statements here...
done < $file
</code></pre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,956 | bash | # While loop, how to read from second line of text file
i've tried everything for the past 2 hours to get this working but my experience in shell and programming is limited.
I have a loop
```
while IFS="," read var1 var2 var3 var4 var5 ; do
statements here...
done < $file
```
Now the operation inside statement is... | Use sed to "delete" the first line from the input passed to the while loop
```
sed 1d $file | while ...
do
your statements here
done
``` |
8089351 | exec() any command in C | 8 | 2011-11-11 03:32:09 | <p>Say in C, I want to call <code>execvp()</code> on any string command. Command can just be:</p>
<pre><code>char command[] = "ls -l";
char command[] = "rm *.txt";
char command[] = "cat makefile";
</code></pre>
<p>I want to put this command variable inside <code>execvp()</code>. So the <code>exec()</code> flavored ... | 28,898 | 864,493 | 2011-11-12 09:12:55 | 8,089,381 | 12 | 2011-11-11 03:37:52 | 14,860 | 2011-11-12 09:12:55 | https://stackoverflow.com/q/8089351 | https://stackoverflow.com/a/8089381 | <p>If you <em>have</em> to call <code>execvp()</code>, then you will need to split up those strings into an executable name and an array of arguments (the first being the "name" of the program and the last being a NULL pointer).</p>
<p>That means something like:</p>
<pre><code>char cmd1[] = "ls"; char *args1[] = {"l... | <p>If you <em>have</em> to call <code>execvp()</code>, then you will need to split up those strings into an executable name and an array of arguments (the first being the "name" of the program and the last being a NULL pointer).</p> <p>That means something like:</p> <pre><code>char cmd1[] = "ls"; char *args1[] = {"l... | 8, 58, 390, 26596 | c, execvp, linux, shell | <h1>exec() any command in C</h1>
<p>Say in C, I want to call <code>execvp()</code> on any string command. Command can just be:</p>
<pre><code>char command[] = "ls -l";
char command[] = "rm *.txt";
char command[] = "cat makefile";
</code></pre>
<p>I want to put this command variable inside <code>execvp()</code>. So ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,957 | bash | # exec() any command in C
Say in C, I want to call `execvp()` on any string command. Command can just be:
```
char command[] = "ls -l";
char command[] = "rm *.txt";
char command[] = "cat makefile";
```
I want to put this command variable inside `execvp()`. So the `exec()` flavored function can just run with any kind... | If you *have* to call `execvp()`, then you will need to split up those strings into an executable name and an array of arguments (the first being the "name" of the program and the last being a NULL pointer).
That means something like:
```
char cmd1[] = "ls"; char *args1[] = {"ls", "-l", NULL};
char cmd1[] = "rm"; c... |
6595429 | Using sed to remove all console.log from javascript file | 8 | 2011-07-06 11:10:00 | <p>I'm trying to remove all my <code>console.log</code>, <code>console.dir</code> etc. from my JS file before minifying it with YUI (<strong>on osx</strong>).</p>
<p>The regex I got for the console statements looks like this:</p>
<pre><code>console.(log|debug|info|warn|error|assert|dir|dirxml|trace|group|groupEnd|tim... | 7,895 | 388,026 | 2018-07-10 15:33:11 | 6,598,788 | 12 | 2011-07-06 15:16:57 | 119,159 | 2011-07-06 15:16:57 | https://stackoverflow.com/q/6595429 | https://stackoverflow.com/a/6598788 | <p>Your original expression looks fine. You just need to pass the <code>-E</code> flag to <code>sed</code>, for <strong>extended</strong> regular expressions:</p>
<pre><code>sed -E 's/console.(log|debug|info|...|count)\((.*)\);?//g'
</code></pre>
<p>The difference between these types of regular expressions is explain... | <p>Your original expression looks fine. You just need to pass the <code>-E</code> flag to <code>sed</code>, for <strong>extended</strong> regular expressions:</p> <pre><code>sed -E 's/console.(log|debug|info|...|count)\((.*)\);?//g' </code></pre> <p>The difference between these types of regular expressions is explain... | 18, 387, 5282 | bash, regex, sed | <h1>Using sed to remove all console.log from javascript file</h1>
<p>I'm trying to remove all my <code>console.log</code>, <code>console.dir</code> etc. from my JS file before minifying it with YUI (<strong>on osx</strong>).</p>
<p>The regex I got for the console statements looks like this:</p>
<pre><code>console.(lo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,958 | bash | # Using sed to remove all console.log from javascript file
I'm trying to remove all my `console.log`, `console.dir` etc. from my JS file before minifying it with YUI (**on osx**).
The regex I got for the console statements looks like this:
```
console.(log|debug|info|warn|error|assert|dir|dirxml|trace|group|groupEnd... | Your original expression looks fine. You just need to pass the `-E` flag to `sed`, for **extended** regular expressions:
```
sed -E 's/console.(log|debug|info|...|count)\((.*)\);?//g'
```
The difference between these types of regular expressions is explained in `man re_format`.
To be honest I have never read that pag... |
5482513 | Powershell add-content line breaks | 8 | 2011-03-30 06:07:53 | <p>I am trying to figure out how to eliminate line breaks when using add-content</p>
<pre><code>echo $server "Uptime: " $uptime.days ", Days" $uptime.hours ", Hours" $uptime.minutes ", Minutes" | add-content $output_file
</code></pre>
<p>Basically I have been trying to get the uptime of a server to go to a text file,... | 19,803 | 683,371 | 2013-06-22 23:11:15 | 5,482,616 | 12 | 2011-03-30 06:19:10 | 75,224 | 2011-03-30 07:11:21 | https://stackoverflow.com/q/5482513 | https://stackoverflow.com/a/5482616 | <p>I guess you want to have one line with the info, then:</p>
<pre><code>"$server Uptime: $($uptime.days) Days, $($uptime.hours) Hours, $($uptime.minutes) Minutes" | add-content $output_file
</code></pre>
<p>If every item should be on separate line, you might add <em>`n</em></p>
<pre><code>"$server Uptime`n$($uptime... | <p>I guess you want to have one line with the info, then:</p> <pre><code>"$server Uptime: $($uptime.days) Days, $($uptime.hours) Hours, $($uptime.minutes) Minutes" | add-content $output_file </code></pre> <p>If every item should be on separate line, you might add <em>`n</em></p> <pre><code>"$server Uptime`n$($uptime... | 526, 9313 | line-breaks, powershell | <h1>Powershell add-content line breaks</h1>
<p>I am trying to figure out how to eliminate line breaks when using add-content</p>
<pre><code>echo $server "Uptime: " $uptime.days ", Days" $uptime.hours ", Hours" $uptime.minutes ", Minutes" | add-content $output_file
</code></pre>
<p>Basically I have been trying to get ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,959 | bash | # Powershell add-content line breaks
I am trying to figure out how to eliminate line breaks when using add-content
```
echo $server "Uptime: " $uptime.days ", Days" $uptime.hours ", Hours" $uptime.minutes ", Minutes" | add-content $output_file
```
Basically I have been trying to get the uptime of a server to go to a... | I guess you want to have one line with the info, then:
```
"$server Uptime: $($uptime.days) Days, $($uptime.hours) Hours, $($uptime.minutes) Minutes" | add-content $output_file
```
If every item should be on separate line, you might add *`n*
```
"$server Uptime`n$($uptime.days) Days`n$($uptime.hours) Hours`n$($uptim... |
5343420 | How to compare in shell script? | 8 | 2011-03-17 18:19:27 | <p>How to compare in shell script?</p>
<p>Or, why the following script prints nothing?</p>
<pre><code>x=1
if[ $x = 1 ] then echo "ok" else echo "no" fi
</code></pre>
| 53,709 | 287,316 | 2018-08-08 07:25:24 | 5,343,461 | 12 | 2011-03-17 18:22:55 | 636,505 | 2011-03-17 18:29:03 | https://stackoverflow.com/q/5343420 | https://stackoverflow.com/a/5343461 | <p>With numbers, use <code>-eq</code>, <code>-ne</code>, ... for equals, not equals, ...</p>
<pre><code>x=1
if [ $x -eq 1 ]
then
echo "ok"
else
echo "no"
fi
</code></pre>
<p>And for others, use <code>==</code> not <code>=</code>.</p>
| <p>With numbers, use <code>-eq</code>, <code>-ne</code>, ... for equals, not equals, ...</p> <pre><code>x=1 if [ $x -eq 1 ] then echo "ok" else echo "no" fi </code></pre> <p>And for others, use <code>==</code> not <code>=</code>.</p> | 58, 387, 390, 1231 | bash, command-line, linux, shell | <h1>How to compare in shell script?</h1>
<p>How to compare in shell script?</p>
<p>Or, why the following script prints nothing?</p>
<pre><code>x=1
if[ $x = 1 ] then echo "ok" else echo "no" fi
</code></pre>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,960 | bash | # How to compare in shell script?
How to compare in shell script?
Or, why the following script prints nothing?
```
x=1
if[ $x = 1 ] then echo "ok" else echo "no" fi
``` | With numbers, use `-eq`, `-ne`, ... for equals, not equals, ...
```
x=1
if [ $x -eq 1 ]
then
echo "ok"
else
echo "no"
fi
```
And for others, use `==` not `=`. |
5146721 | Surgical XML editing with Powershell | 8 | 2011-02-28 19:39:19 | <p>I'm working with csproj files using Powershell to perform large-scale editing of project references. So far I've managed to edit the Include attributes on ProjectReferences using the following lines:</p>
<pre><code> $projectXml = [xml](Get-Content $_.Project.FullName)
Add-TfsPendingChange -edit $_.Project.Fu... | 2,153 | 307,163 | 2011-11-01 01:24:44 | 5,149,368 | 12 | 2011-03-01 00:55:12 | 153,982 | 2011-03-02 23:13:04 | https://stackoverflow.com/q/5146721 | https://stackoverflow.com/a/5149368 | <p>I did a lot of VS project manipulation a few years back. Seems like creating the XmlDocument and using Load directly (versus using Get-Content and casting to XML) worked better for me:</p>
<pre><code>$path = "C:\temp\foo.csproj"
$proj = new-object system.xml.xmldocument
$proj.PreserveWhitespace = $true
$proj.Load(... | <p>I did a lot of VS project manipulation a few years back. Seems like creating the XmlDocument and using Load directly (versus using Get-Content and casting to XML) worked better for me:</p> <pre><code>$path = "C:\temp\foo.csproj" $proj = new-object system.xml.xmldocument $proj.PreserveWhitespace = $true $proj.Load(... | 19, 526, 555, 5991, 63767 | formatting, powershell, select-xml, side-effects, xml | <h1>Surgical XML editing with Powershell</h1>
<p>I'm working with csproj files using Powershell to perform large-scale editing of project references. So far I've managed to edit the Include attributes on ProjectReferences using the following lines:</p>
<pre><code> $projectXml = [xml](Get-Content $_.Project.FullName... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,961 | bash | # Surgical XML editing with Powershell
I'm working with csproj files using Powershell to perform large-scale editing of project references. So far I've managed to edit the Include attributes on ProjectReferences using the following lines:
```
$projectXml = [xml](Get-Content $_.Project.FullName)
Add-TfsPending... | I did a lot of VS project manipulation a few years back. Seems like creating the XmlDocument and using Load directly (versus using Get-Content and casting to XML) worked better for me:
```
$path = "C:\temp\foo.csproj"
$proj = new-object system.xml.xmldocument
$proj.PreserveWhitespace = $true
$proj.Load($path)
...
$pro... |
5082149 | Replace percent-escaped characters in string (%20, %5B, …) with bash | 8 | 2011-02-22 18:19:28 | <p>I have strings containing percent-escaped characters like <code>%20</code> and <code>%5B</code>, and I would like to transform it to "normal" characters like <code>\</code> for <code>%20</code> and <code>[</code> for <code>%5B</code>.</p>
<p>How can I do that?</p>
| 17,186 | 407,213 | 2011-08-17 05:32:29 | 5,082,400 | 12 | 2011-02-22 18:42:06 | 115,405 | 2011-02-22 18:42:06 | https://stackoverflow.com/q/5082149 | https://stackoverflow.com/a/5082400 | <p>The builtin printf in bash has a special format specifier (i.e. %b) which converts \x** to the corresponding value:</p>
<pre><code>$ str='foo%20%5B12%5D'
$ printf "%b\n" "${str//%/\\x}"
foo [12]
</code></pre>
| <p>The builtin printf in bash has a special format specifier (i.e. %b) which converts \x** to the corresponding value:</p> <pre><code>$ str='foo%20%5B12%5D' $ printf "%b\n" "${str//%/\\x}" foo [12] </code></pre> | 139, 387, 1843, 8944 | ascii, bash, string, utf-8 | <h1>Replace percent-escaped characters in string (%20, %5B, …) with bash</h1>
<p>I have strings containing percent-escaped characters like <code>%20</code> and <code>%5B</code>, and I would like to transform it to "normal" characters like <code>\</code> for <code>%20</code> and <code>[</code> for <code>%5B</code>.</p>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,962 | bash | # Replace percent-escaped characters in string (%20, %5B, …) with bash
I have strings containing percent-escaped characters like `%20` and `%5B`, and I would like to transform it to "normal" characters like `\` for `%20` and `[` for `%5B`.
How can I do that? | The builtin printf in bash has a special format specifier (i.e. %b) which converts \x** to the corresponding value:
```
$ str='foo%20%5B12%5D'
$ printf "%b\n" "${str//%/\\x}"
foo [12]
``` |
4953842 | How to store result from SQLPlus to a shell variable | 8 | 2011-02-10 05:51:04 | <p>My requirement is to store the result of an sqlplus operation into a variable in my shell script.
I need the result of the following operation which is in my .sh file</p>
<pre><code>sqlplus 'user/pwd' @test.sql
</code></pre>
<p>I have already tried</p>
<pre><code>testvar = 'sqlplus 'user/pwd'
@test.sql'
</code></pre... | 95,705 | 16,488 | 2016-08-24 06:32:06 | 4,953,950 | 12 | 2011-02-10 06:13:10 | 199,305 | 2011-02-10 07:31:31 | https://stackoverflow.com/q/4953842 | https://stackoverflow.com/a/4953950 | <p>Employ backticks:</p>
<pre><code>testvar=`sqlplus foo/bar @test.sql`
</code></pre>
<p>or should that be of syntactical eyesore:</p>
<pre><code>testvar=$(sqlplus foo/bar @test.sql)
</code></pre>
<p>You clearly know to take the right sql*plus commands to limit superfluous output, yes? :) and of course beware the b... | <p>Employ backticks:</p> <pre><code>testvar=`sqlplus foo/bar @test.sql` </code></pre> <p>or should that be of syntactical eyesore:</p> <pre><code>testvar=$(sqlplus foo/bar @test.sql) </code></pre> <p>You clearly know to take the right sql*plus commands to limit superfluous output, yes? :) and of course beware the b... | 34, 390, 4480 | shell, sqlplus, unix | <h1>How to store result from SQLPlus to a shell variable</h1>
<p>My requirement is to store the result of an sqlplus operation into a variable in my shell script.
I need the result of the following operation which is in my .sh file</p>
<pre><code>sqlplus 'user/pwd' @test.sql
</code></pre>
<p>I have already tried</p>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,963 | bash | # How to store result from SQLPlus to a shell variable
My requirement is to store the result of an sqlplus operation into a variable in my shell script.
I need the result of the following operation which is in my .sh file
```
sqlplus 'user/pwd' @test.sql
```
I have already tried
```
testvar = 'sqlplus 'user/pwd'
@t... | Employ backticks:
```
testvar=`sqlplus foo/bar @test.sql`
```
or should that be of syntactical eyesore:
```
testvar=$(sqlplus foo/bar @test.sql)
```
You clearly know to take the right sql*plus commands to limit superfluous output, yes? :) and of course beware the backticking will collapse the whitespace of the outp... |
1475366 | BASH: Does it support conditional variables like var="test"?"1":"2" | 8 | 2009-09-25 04:03:28 | <p>I am new to bash but have done lots of PHP, and Javascript.</p>
<p>Is there some sort of equivilent to this PHP?</p>
<pre><code>$default = 10;
$var = (!$var) ? $default : $var;
</code></pre>
<p>Thanks</p>
| 4,824 | 178,857 | 2013-01-25 13:58:28 | 1,475,388 | 12 | 2009-09-25 04:10:54 | 14,860 | 2013-01-25 13:58:28 | https://stackoverflow.com/q/1475366 | https://stackoverflow.com/a/1475388 | <p>Yes, it does:</p>
<pre><code>var=${var:-10}
</code></pre>
<p>Even with <em>other</em> variables:</p>
<pre><code>unset var
export def=99
echo ${var:-${def}} # gives '99'
export var=7
echo ${var:-${def}} # gives '7'
</code></pre>
| <p>Yes, it does:</p> <pre><code>var=${var:-10} </code></pre> <p>Even with <em>other</em> variables:</p> <pre><code>unset var export def=99 echo ${var:-${def}} # gives '99' export var=7 echo ${var:-${def}} # gives '7' </code></pre> | 276, 387, 39271 | bash, conditional-statements, variables | <h1>BASH: Does it support conditional variables like var="test"?"1":"2"</h1>
<p>I am new to bash but have done lots of PHP, and Javascript.</p>
<p>Is there some sort of equivilent to this PHP?</p>
<pre><code>$default = 10;
$var = (!$var) ? $default : $var;
</code></pre>
<p>Thanks</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,964 | bash | # BASH: Does it support conditional variables like var="test"?"1":"2"
I am new to bash but have done lots of PHP, and Javascript.
Is there some sort of equivilent to this PHP?
```
$default = 10;
$var = (!$var) ? $default : $var;
```
Thanks | Yes, it does:
```
var=${var:-10}
```
Even with *other* variables:
```
unset var
export def=99
echo ${var:-${def}} # gives '99'
export var=7
echo ${var:-${def}} # gives '7'
``` |
1087843 | Run a script over multiple files in unix | 8 | 2009-07-06 16:10:24 | <p>Started to learn some shell scripting. I have a perl script that runs on one file. How would I write a shell script to run the perl script a bunch of times on all files with keyword "filename" in it?</p>
<p>So in English, </p>
<pre><code>for /filename/ in filenames
perl myscript.pl completefilename
</code>... | 20,270 | 125,449 | 2017-07-02 11:31:40 | 1,087,880 | 12 | 2009-07-06 16:17:14 | 133,734 | 2017-07-02 11:31:30 | https://stackoverflow.com/q/1087843 | https://stackoverflow.com/a/1087880 | <pre><code>find . -name "filename*" -exec perl myscript.pl '{}' \;
</code></pre>
| <pre><code>find . -name "filename*" -exec perl myscript.pl '{}' \; </code></pre> | 34, 390 | shell, unix | <h1>Run a script over multiple files in unix</h1>
<p>Started to learn some shell scripting. I have a perl script that runs on one file. How would I write a shell script to run the perl script a bunch of times on all files with keyword "filename" in it?</p>
<p>So in English, </p>
<pre><code>for /filename/ in filenam... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,965 | bash | # Run a script over multiple files in unix
Started to learn some shell scripting. I have a perl script that runs on one file. How would I write a shell script to run the perl script a bunch of times on all files with keyword "filename" in it?
So in English,
```
for /filename/ in filenames
perl myscript.pl comp... | ```
find . -name "filename*" -exec perl myscript.pl '{}' \;
``` |
1056440 | undelete the deleted command in bash | 8 | 2009-06-29 03:21:58 | <p>If you have written a really long command, say <code>cd /very/long/path</code>, and then you do ctrl+c or ctrl+u (if the cursor is at the end), and then you realise that you want the command back, is there any way to get the full line back without re-typing. Is there any trick to change <code>.bashrc</code> so that ... | 2,092 | 129,727 | 2013-11-20 07:19:48 | 1,056,445 | 12 | 2009-06-29 03:25:03 | 68,587 | 2013-11-20 07:19:48 | https://stackoverflow.com/q/1056440 | https://stackoverflow.com/a/1056445 | <p>To undo, use either</p>
<ul>
<li><kbd>Ctrl</kbd>+<kbd>X</kbd>, <kbd>Ctrl</kbd>+<kbd>U</kbd>; or</li>
<li><kbd>Ctrl</kbd>+<kbd>_</kbd> (underscore).</li>
</ul>
<p>See <code>bind -P</code> for a full list of keybindings in <code>bash</code>.</p>
| <p>To undo, use either</p> <ul> <li><kbd>Ctrl</kbd>+<kbd>X</kbd>, <kbd>Ctrl</kbd>+<kbd>U</kbd>; or</li> <li><kbd>Ctrl</kbd>+<kbd>_</kbd> (underscore).</li> </ul> <p>See <code>bind -P</code> for a full list of keybindings in <code>bash</code>.</p> | 58, 387, 1231 | bash, command-line, linux | <h1>undelete the deleted command in bash</h1>
<p>If you have written a really long command, say <code>cd /very/long/path</code>, and then you do ctrl+c or ctrl+u (if the cursor is at the end), and then you realise that you want the command back, is there any way to get the full line back without re-typing. Is there any... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,966 | bash | # undelete the deleted command in bash
If you have written a really long command, say `cd /very/long/path`, and then you do ctrl+c or ctrl+u (if the cursor is at the end), and then you realise that you want the command back, is there any way to get the full line back without re-typing. Is there any trick to change `.b... | To undo, use either
- `Ctrl`+`X`, `Ctrl`+`U`; or
- `Ctrl`+`_` (underscore).
See `bind -P` for a full list of keybindings in `bash`. |
572206 | How do I check if certain files exist in Bash? | 8 | 2009-02-21 03:53:29 | <p>In a <code>bash</code> script, I have to check for the existence of several files.</p>
<p>I know an awkward way to do it, which is as follows, but that would mean that my main program has to be within that ugly nested structure:</p>
<pre><code>if [ -f $FILE1 ]
then
if [ -f $FILE2 ]
then
echo OK
# MAIN PROGRAM ... | 10,955 | 60,628 | 2018-03-31 22:03:51 | 572,225 | 12 | 2009-02-21 03:59:02 | 34,509 | 2009-02-21 14:53:57 | https://stackoverflow.com/q/572206 | https://stackoverflow.com/a/572225 | <p>How about</p>
<pre><code>if [[ ! ( -f $FILE1 && -f $FILE2 ) ]]; then
echo NOT FOUND
exit 1
fi
# do stuff
echo OK
</code></pre>
<p>See <code>help [[</code> and <code>help test</code> for the options usable with the <code>[[</code> style tests. Also read <a href="http://mywiki.wooledge.org/BashFAQ/0... | <p>How about</p> <pre><code>if [[ ! ( -f $FILE1 && -f $FILE2 ) ]]; then echo NOT FOUND exit 1 fi # do stuff echo OK </code></pre> <p>See <code>help [[</code> and <code>help test</code> for the options usable with the <code>[[</code> style tests. Also read <a href="http://mywiki.wooledge.org/BashFAQ/0... | 379, 387, 390 | bash, error-handling, shell | <h1>How do I check if certain files exist in Bash?</h1>
<p>In a <code>bash</code> script, I have to check for the existence of several files.</p>
<p>I know an awkward way to do it, which is as follows, but that would mean that my main program has to be within that ugly nested structure:</p>
<pre><code>if [ -f $FILE1 ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,967 | bash | # How do I check if certain files exist in Bash?
In a `bash` script, I have to check for the existence of several files.
I know an awkward way to do it, which is as follows, but that would mean that my main program has to be within that ugly nested structure:
```
if [ -f $FILE1 ]
then
if [ -f $FILE2 ]
then
echo OK... | How about
```
if [[ ! ( -f $FILE1 && -f $FILE2 ) ]]; then
echo NOT FOUND
exit 1
fi
# do stuff
echo OK
```
See `help [[` and `help test` for the options usable with the `[[` style tests. Also read [this faq entry](http://mywiki.wooledge.org/BashFAQ/031).
Your version does not work because `(...)` spawns a ne... |
81022 | How to autocomplete at the KornShell command line with the vi editor | 8 | 2008-09-17 08:10:54 | <p>In the KornShell (ksh) on <b>AIX UNIX Version 5.3</b> with the editor mode set to vi using:</p>
<pre><code>set -o vi
</code></pre>
<p>What are the key-strokes at the shell command line to autocomplete a file or directory name?</p>
| 30,408 | 381 | 2014-01-03 15:27:59 | 81,135 | 12 | 2008-09-17 08:30:02 | 14,860 | 2008-09-17 10:00:10 | https://stackoverflow.com/q/81022 | https://stackoverflow.com/a/81135 | <p>ESC\ works fine on AIX4.2 at least. One thing I noticed is that it only autocompletes to the unique part of the file name.</p>
<p>So if you have the files x.txt, x171go and x171stop, the following will happen:</p>
<pre><code>Press keys: Command line is:
x x
<ESC>\ ... | <p>ESC\ works fine on AIX4.2 at least. One thing I noticed is that it only autocompletes to the unique part of the file name.</p> <p>So if you have the files x.txt, x171go and x171stop, the following will happen:</p> <pre><code>Press keys: Command line is: x x <ESC>\ ... | 34, 293, 390, 989, 1964 | aix, ksh, shell, unix, vi | <h1>How to autocomplete at the KornShell command line with the vi editor</h1>
<p>In the KornShell (ksh) on <b>AIX UNIX Version 5.3</b> with the editor mode set to vi using:</p>
<pre><code>set -o vi
</code></pre>
<p>What are the key-strokes at the shell command line to autocomplete a file or directory name?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,968 | bash | # How to autocomplete at the KornShell command line with the vi editor
In the KornShell (ksh) on **AIX UNIX Version 5.3** with the editor mode set to vi using:
```
set -o vi
```
What are the key-strokes at the shell command line to autocomplete a file or directory name? | ESC\ works fine on AIX4.2 at least. One thing I noticed is that it only autocompletes to the unique part of the file name.
So if you have the files x.txt, x171go and x171stop, the following will happen:
```
Press keys: Command line is:
x x
<ESC>\ x
1 x1... |
75251848 | How do I add an atomic counter to a powershell ForEach -Parallel loop | 7 | 2023-01-26 21:32:19 | <p>In this question, it was explained how to add to a concurrent ThreadSafe collection <a href="https://stackoverflow.com/questions/68018202/powershell-how-to-add-result-to-an-array-foreach-object-parallel">Powershell: How to add Result to an Array (ForEach-Object -Parallel)</a></p>
<p>I have a simpler use case , where... | 1,865 | 5,198,805 | 2024-07-23 03:24:30 | 75,252,238 | 12 | 2023-01-26 22:20:54 | 15,339,544 | 2024-07-23 03:20:47 | https://stackoverflow.com/q/75251848 | https://stackoverflow.com/a/75252238 |
<p>In PowerShell when updating a single value from multiple threads you must use a locking mechanism, for example <a href="https://learn.microsoft.com/en-us/dotnet/api/system.threading.mutex" rel="nofollow noreferrer"><code>Mutex</code></a>, <a href="https://learn.microsoft.com/en-us/dotnet/api/system.threading.semaph... | <p>In PowerShell when updating a single value from multiple threads you must use a locking mechanism, for example <a href="https://learn.microsoft.com/en-us/dotnet/api/system.threading.mutex" rel="nofollow noreferrer"><code>Mutex</code></a>, <a href="https://learn.microsoft.com/en-us/dotnet/api/system.threading.semaph... | 353, 526, 1381, 13829 | multithreading, parallel-processing, powershell, thread-safety | <h1>How do I add an atomic counter to a powershell ForEach -Parallel loop</h1>
<p>In this question, it was explained how to add to a concurrent ThreadSafe collection <a href="https://stackoverflow.com/questions/68018202/powershell-how-to-add-result-to-an-array-foreach-object-parallel">Powershell: How to add Result to a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,969 | bash | # How do I add an atomic counter to a powershell ForEach -Parallel loop
In this question, it was explained how to add to a concurrent ThreadSafe collection [Powershell: How to add Result to an Array (ForEach-Object -Parallel)](https://stackoverflow.com/questions/68018202/powershell-how-to-add-result-to-an-array-foreac... | In PowerShell when updating a single value from multiple threads you must use a locking mechanism, for example [`Mutex`](https://learn.microsoft.com/en-us/dotnet/api/system.threading.mutex), [`SemaphoreSlim`](https://learn.microsoft.com/en-us/dotnet/api/system.threading.semaphoreslim), [`Monitor`](https://learn.microso... |
74216620 | Powershell .contains() check without casesensitive | 7 | 2022-10-27 03:52:18 | <p>I'm having a larger foreach loop code but need to get below code executed without casesensitive.</p>
<p>Below code snippet returns false, how can I ignore the casesensitive .contains() and the condition as true?</p>
<pre><code>$a='aa0855'
$b='AA0855 Sample'
$b.Contains($a)
</code></pre>
<p>Expected value is true. Ab... | 15,050 | 20,211,962 | 2024-11-19 22:40:05 | 74,216,683 | 12 | 2022-10-27 04:01:12 | 45,375 | 2024-11-19 22:40:05 | https://stackoverflow.com/q/74216620 | https://stackoverflow.com/a/74216683 | <p>The <strong><a href="https://docs.microsoft.com/en-US/dotnet/api/System.String.Contains" rel="nofollow noreferrer"><code>.Contains()</code></a> .NET string method is indeed case-<em>sensitive</em> - <em>invariably</em> in <em>Windows PowerShell</em>, and <em>by default</em> in <em>PowerShell (Core) 7+</em></strong>.... | <p>The <strong><a href="https://docs.microsoft.com/en-US/dotnet/api/System.String.Contains" rel="nofollow noreferrer"><code>.Contains()</code></a> .NET string method is indeed case-<em>sensitive</em> - <em>invariably</em> in <em>Windows PowerShell</em>, and <em>by default</em> in <em>PowerShell (Core) 7+</em></strong>.... | 526, 4371, 17150 | powershell, string-matching, substring | <h1>Powershell .contains() check without casesensitive</h1>
<p>I'm having a larger foreach loop code but need to get below code executed without casesensitive.</p>
<p>Below code snippet returns false, how can I ignore the casesensitive .contains() and the condition as true?</p>
<pre><code>$a='aa0855'
$b='AA0855 Sample'... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,970 | bash | # Powershell .contains() check without casesensitive
I'm having a larger foreach loop code but need to get below code executed without casesensitive.
Below code snippet returns false, how can I ignore the casesensitive .contains() and the condition as true?
```
$a='aa0855'
$b='AA0855 Sample'
$b.Contains($a)
```
Exp... | The **[`.Contains()`](https://docs.microsoft.com/en-US/dotnet/api/System.String.Contains) .NET string method is indeed case-*sensitive* - *invariably* in *Windows PowerShell*, and *by default* in *PowerShell (Core) 7+***.
Thus, in **[*PowerShell (Core) 7*](https://github.com/PowerShell/PowerShell/blob/master/README.md... |
71399918 | replace match group using regex + powershell | 7 | 2022-03-08 18:30:46 | <p>I am trying to setup a PowerShell script that would replace a matching string from my GlobalAssemblyInfo.cs file. I am basically looking to update the Version number via powershell so I can do that in a post build automatically. Anyways, the input string from the cs file is this:</p>
<pre><code>//-------------------... | 6,882 | 3,263,488 | 2025-10-29 00:03:36 | 71,400,264 | 12 | 2022-03-08 19:06:33 | 15,339,544 | 2025-10-29 00:03:10 | https://stackoverflow.com/q/71399918 | https://stackoverflow.com/a/71400264 | <p><a href="https://stackoverflow.com/questions/71399918/replace-match-group-using-regex-powershell#comment126203319_71399918">Abraham's helpful comment</a> already pointed out the key issue, <a href="https://learn.microsoft.com/en-us/dotnet/api/system.string.replace?view=net-6.0" rel="nofollow noreferrer"><code>.Repla... | <p><a href="https://stackoverflow.com/questions/71399918/replace-match-group-using-regex-powershell#comment126203319_71399918">Abraham's helpful comment</a> already pointed out the key issue, <a href="https://learn.microsoft.com/en-us/dotnet/api/system.string.replace?view=net-6.0" rel="nofollow noreferrer"><code>.Repla... | 18, 526, 53034 | powershell, ps1, regex | <h1>replace match group using regex + powershell</h1>
<p>I am trying to setup a PowerShell script that would replace a matching string from my GlobalAssemblyInfo.cs file. I am basically looking to update the Version number via powershell so I can do that in a post build automatically. Anyways, the input string from the... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,971 | bash | # replace match group using regex + powershell
I am trying to setup a PowerShell script that would replace a matching string from my GlobalAssemblyInfo.cs file. I am basically looking to update the Version number via powershell so I can do that in a post build automatically. Anyways, the input string from the cs file ... | [Abraham's helpful comment](https://stackoverflow.com/questions/71399918/replace-match-group-using-regex-powershell#comment126203319_71399918) already pointed out the key issue, [`.Replace(..)`](https://learn.microsoft.com/en-us/dotnet/api/system.string.replace?view=net-6.0) is a string method for **literal replacement... |
62464466 | How to print bold and sized text in Bash? | 7 | 2020-06-19 06:24:26 | <p><em><strong>1st question</strong></em></p>
<p>printing "<strong>BOLD</strong>" text...using <code>lp</code> if possible.</p>
<p>example:</p>
<p><code>echo -e "\e[1mBOLD\e[0m" | lp</code></p>
<p>will print out this below on a white paper</p>
<p><code>1mBOLD0m</code></p>
<p>how to get:</p>
<p><stro... | 8,238 | 13,718,592 | 2022-03-01 19:40:28 | 62,573,221 | 12 | 2020-06-25 10:26:51 | 7,582,247 | 2020-08-04 11:44:51 | https://stackoverflow.com/q/62464466 | https://stackoverflow.com/a/62573221 | <p>For starters, don't use the raw ANSI escape sequences directly since it makes it hard to read and maintain. Use <a href="https://linux.die.net/man/1/tput" rel="noreferrer"><code>tput</code></a> to produce the escape sequences for you.</p>
<p>There's a tool called <a href="https://github.com/theZiz/aha" rel="noreferr... | <p>For starters, don't use the raw ANSI escape sequences directly since it makes it hard to read and maintain. Use <a href="https://linux.die.net/man/1/tput" rel="noreferrer"><code>tput</code></a> to produce the escape sequences for you.</p> <p>There's a tool called <a href="https://github.com/theZiz/aha" rel="noreferr... | 87, 387, 555 | bash, formatting, printing | <h1>How to print bold and sized text in Bash?</h1>
<p><em><strong>1st question</strong></em></p>
<p>printing "<strong>BOLD</strong>" text...using <code>lp</code> if possible.</p>
<p>example:</p>
<p><code>echo -e "\e[1mBOLD\e[0m" | lp</code></p>
<p>will print out this below on a white paper</p>
<p><c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,972 | bash | # How to print bold and sized text in Bash?
***1st question***
printing "**BOLD**" text...using `lp` if possible.
example:
`echo -e "\e[1mBOLD\e[0m" | lp`
will print out this below on a white paper
`1mBOLD0m`
how to get:
**BOLD**
?
***2nd question***
Printing `[font size=33]SIZED TEXT[/font]`, how?
the only... | For starters, don't use the raw ANSI escape sequences directly since it makes it hard to read and maintain. Use [`tput`](https://linux.die.net/man/1/tput) to produce the escape sequences for you.
There's a tool called [aha](https://github.com/theZiz/aha) that can convert ANSI escape sequences into HTML. You can probab... |
60543899 | How to supply the password as an argument in realm join to active directory command | 7 | 2020-03-05 11:03:08 | <p>I am trying to automate few areas like joining the linux server to active directory. To join the server to AD, I am using the following command:</p>
<p><code>realm join -U <Username> exmaple.com</code></p>
<p>The above command will prompt for a password which need to provided during the execution time. My re... | 18,048 | 7,405,974 | 2024-10-11 17:10:14 | 62,103,887 | 12 | 2020-05-30 14:31:38 | 7,405,974 | 2020-05-30 14:31:38 | https://stackoverflow.com/q/60543899 | https://stackoverflow.com/a/62103887 | <p>This is resolved. Following is the answer</p>
<p><code>echo $password | realm join -U <Username> example.com</code></p>
<p>replace $password with your actual password</p>
| <p>This is resolved. Following is the answer</p> <p><code>echo $password | realm join -U <Username> example.com</code></p> <p>replace $password with your actual password</p> | 58, 390, 10401 | active-directory, linux, shell | <h1>How to supply the password as an argument in realm join to active directory command</h1>
<p>I am trying to automate few areas like joining the linux server to active directory. To join the server to AD, I am using the following command:</p>
<p><code>realm join -U <Username> exmaple.com</code></p>
<p>The abo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,973 | bash | # How to supply the password as an argument in realm join to active directory command
I am trying to automate few areas like joining the linux server to active directory. To join the server to AD, I am using the following command:
`realm join -U <Username> exmaple.com`
The above command will prompt for a password wh... | This is resolved. Following is the answer
`echo $password | realm join -U <Username> example.com`
replace $password with your actual password |
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