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6517783 | Remove files when first two characters are ZZ | 9 | 2011-06-29 08:34:24 | <p>I want to delete all the files when the first two characters are equal to <code>zz</code> or <code>ZZ</code>. How can I do it?</p>
| 8,570 | 799,383 | 2019-05-25 13:41:20 | 6,520,504 | 13 | 2011-06-29 12:18:04 | 9,833 | 2011-06-29 13:19:49 | https://stackoverflow.com/q/6517783 | https://stackoverflow.com/a/6520504 | <p>Get all objects (including hidden, recursively) from a path with names starting with 'zz', filter out directory objects and delete the items.</p>
<pre><code>Get-ChildItem <path> -Recurse -Force -Filter zz* | Where-Object {!$_.PSIsContainer} | Remove-Item
</code></pre>
| <p>Get all objects (including hidden, recursively) from a path with names starting with 'zz', filter out directory objects and delete the items.</p> <pre><code>Get-ChildItem <path> -Recurse -Force -Filter zz* | Where-Object {!$_.PSIsContainer} | Remove-Item </code></pre> | 64, 526, 896 | desktop, powershell, windows | <h1>Remove files when first two characters are ZZ</h1>
<p>I want to delete all the files when the first two characters are equal to <code>zz</code> or <code>ZZ</code>. How can I do it?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,369 | bash | # Remove files when first two characters are ZZ
I want to delete all the files when the first two characters are equal to `zz` or `ZZ`. How can I do it? | Get all objects (including hidden, recursively) from a path with names starting with 'zz', filter out directory objects and delete the items.
```
Get-ChildItem <path> -Recurse -Force -Filter zz* | Where-Object {!$_.PSIsContainer} | Remove-Item
``` |
5622746 | Power shell: Import-Module | 9 | 2011-04-11 14:26:19 | <p>I have been trying to us the app fabric caching on a win2008 standard server. When I execute the follwowing command I get:
Import-Module DistributedCacheAdministration
Import-Module : The specified module 'DistributedCacheAdministration' was not loaded because no valid module file was found in any module directory.... | 7,568 | 188,577 | 2013-08-07 09:03:03 | 5,623,399 | 13 | 2011-04-11 15:11:33 | 662,388 | 2011-08-23 18:58:16 | https://stackoverflow.com/q/5622746 | https://stackoverflow.com/a/5623399 | <p>Modules and their commands is a feature in Powershell 2 only, so you can be quite certain you're running this version. I guess you're confused because the Powershell.exe is located in a "1.0" directory; that's only to make version 2.0 backwards compatible.</p>
<p>You need to specify the exact location of the module... | <p>Modules and their commands is a feature in Powershell 2 only, so you can be quite certain you're running this version. I guess you're confused because the Powershell.exe is located in a "1.0" directory; that's only to make version 2.0 backwards compatible.</p> <p>You need to specify the exact location of the module... | 9, 526, 1763, 44344 | appfabric, c#, caching, powershell | <h1>Power shell: Import-Module</h1>
<p>I have been trying to us the app fabric caching on a win2008 standard server. When I execute the follwowing command I get:
Import-Module DistributedCacheAdministration
Import-Module : The specified module 'DistributedCacheAdministration' was not loaded because no valid module fil... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,370 | bash | # Power shell: Import-Module
I have been trying to us the app fabric caching on a win2008 standard server. When I execute the follwowing command I get:
Import-Module DistributedCacheAdministration
Import-Module : The specified module 'DistributedCacheAdministration' was not loaded because no valid module file was foun... | Modules and their commands is a feature in Powershell 2 only, so you can be quite certain you're running this version. I guess you're confused because the Powershell.exe is located in a "1.0" directory; that's only to make version 2.0 backwards compatible.
You need to specify the exact location of the module to load: ... |
4696128 | Bash script — determine if file modified? | 9 | 2011-01-14 21:26:41 | <p>I have a Bash script that repeatedly copies files every 5 seconds. But this is a touch overkill as usually there is no change.</p>
<p>I know about the Linux command <code>watch</code> but as this script will be used on OS X computers (which don’t have <code>watch</code>, and I don’t want to make everyone install ma... | 14,680 | 211,327 | 2011-12-08 01:24:00 | 4,696,191 | 13 | 2011-01-14 21:34:19 | 241,148 | 2011-01-15 02:32:54 | https://stackoverflow.com/q/4696128 | https://stackoverflow.com/a/4696191 | <p>I tend to agree with the <code>rsync</code> answer if you have big trees of files
to manage, but you can use the -u (--update) flag to cp to copy the
file(s) over only if the source is newer than the destination.</p>
<p>cp -u </p>
<p><strong>Edit</strong></p>
<p>Since you've updated the question to indicate that... | <p>I tend to agree with the <code>rsync</code> answer if you have big trees of files to manage, but you can use the -u (--update) flag to cp to copy the file(s) over only if the source is newer than the destination.</p> <p>cp -u </p> <p><strong>Edit</strong></p> <p>Since you've updated the question to indicate that... | 369, 387 | bash, macos | <h1>Bash script — determine if file modified?</h1>
<p>I have a Bash script that repeatedly copies files every 5 seconds. But this is a touch overkill as usually there is no change.</p>
<p>I know about the Linux command <code>watch</code> but as this script will be used on OS X computers (which don’t have <code>watch</... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,371 | bash | # Bash script — determine if file modified?
I have a Bash script that repeatedly copies files every 5 seconds. But this is a touch overkill as usually there is no change.
I know about the Linux command `watch` but as this script will be used on OS X computers (which don’t have `watch`, and I don’t want to make everyo... | I tend to agree with the `rsync` answer if you have big trees of files
to manage, but you can use the -u (--update) flag to cp to copy the
file(s) over only if the source is newer than the destination.
cp -u
**Edit**
Since you've updated the question to indicate that you'd like to take
some additional actions, you'l... |
4600226 | Shell Scripts in Mac OS X run from home directory? | 9 | 2011-01-05 02:04:40 | <p>I'm a longtime Windows and Linux user and have had some weird experiences writing shell scripts on Mac OS X. In particular, I can write the scripts just fine and run them from the terminal, but every time I try running one from a Finder window it always executes from the user's home directory rather than the direct... | 7,600 | 501,557 | 2018-11-30 03:00:48 | 4,600,238 | 13 | 2011-01-05 02:08:20 | 182,327 | 2011-01-06 01:23:26 | https://stackoverflow.com/q/4600226 | https://stackoverflow.com/a/4600238 | <p>The behaviour seems consistent to me. It inherits your finder instances environment, which would be rooted at your home directory.</p>
<p>However, it's not too hard to fix.</p>
<pre><code>cd "$(dirname "$0")"
</code></pre>
<p>Ought to do the trick ala:</p>
<pre><code>richh-desktop % fullname.sh
/home/richh/bin
... | <p>The behaviour seems consistent to me. It inherits your finder instances environment, which would be rooted at your home directory.</p> <p>However, it's not too hard to fix.</p> <pre><code>cd "$(dirname "$0")" </code></pre> <p>Ought to do the trick ala:</p> <pre><code>richh-desktop % fullname.sh /home/richh/bin ... | 369, 390 | macos, shell | <h1>Shell Scripts in Mac OS X run from home directory?</h1>
<p>I'm a longtime Windows and Linux user and have had some weird experiences writing shell scripts on Mac OS X. In particular, I can write the scripts just fine and run them from the terminal, but every time I try running one from a Finder window it always ex... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,372 | bash | # Shell Scripts in Mac OS X run from home directory?
I'm a longtime Windows and Linux user and have had some weird experiences writing shell scripts on Mac OS X. In particular, I can write the scripts just fine and run them from the terminal, but every time I try running one from a Finder window it always executes fro... | The behaviour seems consistent to me. It inherits your finder instances environment, which would be rooted at your home directory.
However, it's not too hard to fix.
```
cd "$(dirname "$0")"
```
Ought to do the trick ala:
```
richh-desktop % fullname.sh
/home/richh/bin
richh-desktop % cd ..
richh-desktop % fullna... |
3693852 | Extract IP from netstat output | 9 | 2010-09-12 05:17:22 | <p>The netstat output contains thing like...</p>
<pre><code>tcp 0 0 0.0.0.0:80 221.126.149.99:51973 ESTABLISHED 23879/apache2
tcp 0 0 0.0.0.0:80 66.249.68.154:40883 ESTABLISHED 23899/apache2
tcp 0 0 0.0.0.0:80 66.249.68.81:41200 ESTABLISHED 23892/apach... | 17,285 | 365,256 | 2012-09-05 06:26:18 | 3,701,097 | 13 | 2010-09-13 13:57:08 | 437,095 | 2010-09-13 13:57:08 | https://stackoverflow.com/q/3693852 | https://stackoverflow.com/a/3701097 | <p>This will return a list of unique IP address you're connected too:</p>
<pre><code>netstat -anpt | grep apache2 |grep ESTABLISHED | awk '{ print $5 }' | cut -d: -f1 | sort -u
</code></pre>
<p>Well I think I need to change my glasses also =P</p>
| <p>This will return a list of unique IP address you're connected too:</p> <pre><code>netstat -anpt | grep apache2 |grep ESTABLISHED | awk '{ print $5 }' | cut -d: -f1 | sort -u </code></pre> <p>Well I think I need to change my glasses also =P</p> | 390, 990, 2198 | awk, netstat, shell | <h1>Extract IP from netstat output</h1>
<p>The netstat output contains thing like...</p>
<pre><code>tcp 0 0 0.0.0.0:80 221.126.149.99:51973 ESTABLISHED 23879/apache2
tcp 0 0 0.0.0.0:80 66.249.68.154:40883 ESTABLISHED 23899/apache2
tcp 0 0 0.0.0.0:80 66.249.... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,373 | bash | # Extract IP from netstat output
The netstat output contains thing like...
```
tcp 0 0 0.0.0.0:80 221.126.149.99:51973 ESTABLISHED 23879/apache2
tcp 0 0 0.0.0.0:80 66.249.68.154:40883 ESTABLISHED 23899/apache2
tcp 0 0 0.0.0.0:80 66.249.68.81:41200 EST... | This will return a list of unique IP address you're connected too:
```
netstat -anpt | grep apache2 |grep ESTABLISHED | awk '{ print $5 }' | cut -d: -f1 | sort -u
```
Well I think I need to change my glasses also =P |
3511006 | How to compare versions of some products in unix ksh shell? | 9 | 2010-08-18 10:16:27 | <p>Format of versions - X.X.X.X.<br>
Where X - number.<br>
What is the best way to compare two versions?<br>
I use following code: </p>
<pre><code>compareVersions()
{
VER_1=$1
VER_2=$2
print -R "$VER_1"| IFS=. read v1_1 v1_2 v1_3 v1_4
print -R "$VER_2"| IFS=. read v2_1 v2_2 v2_3 v2_4
RESULT="0"
if [[ "... | 4,212 | 167,739 | 2020-01-23 15:28:27 | 3,511,118 | 13 | 2010-08-18 10:32:39 | 57,457 | 2010-08-20 07:21:40 | https://stackoverflow.com/q/3511006 | https://stackoverflow.com/a/3511118 | <p>Pure Bash / Ksh:</p>
<pre><code>compareVersions ()
{
typeset IFS='.'
typeset -a v1=( $1 )
typeset -a v2=( $2 )
typeset n diff
for (( n=0; n<4; n+=1 )); do
diff=$((v1[n]-v2[n]))
if [ $diff -ne 0 ] ; then
[ $diff -le 0 ] && echo '-1' || echo '1'
return
fi
done
e... | <p>Pure Bash / Ksh:</p> <pre><code>compareVersions () { typeset IFS='.' typeset -a v1=( $1 ) typeset -a v2=( $2 ) typeset n diff for (( n=0; n<4; n+=1 )); do diff=$((v1[n]-v2[n])) if [ $diff -ne 0 ] ; then [ $diff -le 0 ] && echo '-1' || echo '1' return fi done e... | 34, 390, 1964 | ksh, shell, unix | <h1>How to compare versions of some products in unix ksh shell?</h1>
<p>Format of versions - X.X.X.X.<br>
Where X - number.<br>
What is the best way to compare two versions?<br>
I use following code: </p>
<pre><code>compareVersions()
{
VER_1=$1
VER_2=$2
print -R "$VER_1"| IFS=. read v1_1 v1_2 v1_3 v1_4
print... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,374 | bash | # How to compare versions of some products in unix ksh shell?
Format of versions - X.X.X.X.
Where X - number.
What is the best way to compare two versions?
I use following code:
```
compareVersions()
{
VER_1=$1
VER_2=$2
print -R "$VER_1"| IFS=. read v1_1 v1_2 v1_3 v1_4
print -R "$VER_2"| IFS=. read v2_... | Pure Bash / Ksh:
```
compareVersions ()
{
typeset IFS='.'
typeset -a v1=( $1 )
typeset -a v2=( $2 )
typeset n diff
for (( n=0; n<4; n+=1 )); do
diff=$((v1[n]-v2[n]))
if [ $diff -ne 0 ] ; then
[ $diff -le 0 ] && echo '-1' || echo '1'
return
fi
done
echo '0'
} # ---------- ... |
2838475 | How do I get the name of the newest file via the Terminal? | 9 | 2010-05-15 00:58:33 | <p>I'm trying to create a macro for <a href="http://www.keyboardmaestro.com/main/" rel="noreferrer">Keyboard Maestro</a> for OS X doing the following:</p>
<ol>
<li>Get name of newest file in a directory on my disk based on date created;</li>
<li>Paste the text "newest file: " plus the name of the newest file.</li>
</o... | 32,624 | 115,681 | 2017-12-13 15:52:15 | 2,838,491 | 13 | 2010-05-15 01:07:18 | 275,737 | 2010-05-15 01:07:18 | https://stackoverflow.com/q/2838475 | https://stackoverflow.com/a/2838491 | <p>Since you're already using pipes, just throw another one in there:</p>
<pre><code>ls -t | head -n1 |awk '{printf("newest file: %s",$0)}'
</code></pre>
<p>(Note that the "printf" does not include a '\n' at the end; that gets rid of the linebreak) </p>
<p>Edit:</p>
<p>With Arkku's suggestion to exit awk after the ... | <p>Since you're already using pipes, just throw another one in there:</p> <pre><code>ls -t | head -n1 |awk '{printf("newest file: %s",$0)}' </code></pre> <p>(Note that the "printf" does not include a '\n' at the end; that gets rid of the linebreak) </p> <p>Edit:</p> <p>With Arkku's suggestion to exit awk after the ... | 390, 1231, 108212 | command-line, keyboard-maestro, shell | <h1>How do I get the name of the newest file via the Terminal?</h1>
<p>I'm trying to create a macro for <a href="http://www.keyboardmaestro.com/main/" rel="noreferrer">Keyboard Maestro</a> for OS X doing the following:</p>
<ol>
<li>Get name of newest file in a directory on my disk based on date created;</li>
<li>Paste... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,375 | bash | # How do I get the name of the newest file via the Terminal?
I'm trying to create a macro for [Keyboard Maestro](http://www.keyboardmaestro.com/main/) for OS X doing the following:
1. Get name of newest file in a directory on my disk based on date created;
2. Paste the text "newest file: " plus the name of the newest... | Since you're already using pipes, just throw another one in there:
```
ls -t | head -n1 |awk '{printf("newest file: %s",$0)}'
```
(Note that the "printf" does not include a '\n' at the end; that gets rid of the linebreak)
Edit:
With Arkku's suggestion to exit awk after the first line, it looks like:
```
ls -t | aw... |
2816225 | How can I (from a script) add something to the zsh command history? | 9 | 2010-05-12 05:22:56 | <p>I'd like to be able to look through my command history and know the context from which I issued various commands--in other words, "what directory was I in?" There are various ways I could achieve this, but all of them (that I can think of) would require manipulating the zsh history to add (for instance) a commented... | 3,994 | 241,142 | 2010-05-12 07:34:33 | 2,816,792 | 13 | 2010-05-12 07:34:33 | 26,428 | 2010-05-12 07:34:33 | https://stackoverflow.com/q/2816225 | https://stackoverflow.com/a/2816792 | <p>You can use the <code>print -s</code> command (see <code>man zshbuiltins</code>) to add anything you want to the history. There's also a hook function you can create called <code>zshaddhistory</code> (see <code>man zshmisc</code>) that can manipulate history contents as they are created.</p>
<p>See <a href="https:/... | <p>You can use the <code>print -s</code> command (see <code>man zshbuiltins</code>) to add anything you want to the history. There's also a hook function you can create called <code>zshaddhistory</code> (see <code>man zshmisc</code>) that can manipulate history contents as they are created.</p> <p>See <a href="https:/... | 390, 1318, 3791 | history, shell, zsh | <h1>How can I (from a script) add something to the zsh command history?</h1>
<p>I'd like to be able to look through my command history and know the context from which I issued various commands--in other words, "what directory was I in?" There are various ways I could achieve this, but all of them (that I can think of)... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,376 | bash | # How can I (from a script) add something to the zsh command history?
I'd like to be able to look through my command history and know the context from which I issued various commands--in other words, "what directory was I in?" There are various ways I could achieve this, but all of them (that I can think of) would req... | You can use the `print -s` command (see `man zshbuiltins`) to add anything you want to the history. There's also a hook function you can create called `zshaddhistory` (see `man zshmisc`) that can manipulate history contents as they are created.
See [my Bash history logging functions](https://stackoverflow.com/question... |
2674427 | Writing " to a file in bash | 9 | 2010-04-20 10:54:49 | <p>Simply I need to write</p>
<pre><code>"echo" t${count} = "$"t${count}"
</code></pre>
<p>To a text file, including all the So the output would be something like:</p>
<pre><code>echo " t1 = $t1"
</code></pre>
<p>With " as they are. So I have tried:</p>
<pre><code>count=1
saveIFS="$IFS"
IFS=$'\n'
array=($(<TE... | 17,319 | 311,963 | 2010-04-20 12:02:51 | 2,674,454 | 13 | 2010-04-20 10:59:09 | 46,991 | 2010-04-20 10:59:09 | https://stackoverflow.com/q/2674427 | https://stackoverflow.com/a/2674454 | <p>There's actually no wrapping in double quotes for variables, first quote starts, the second quote ends the quoted string. You may however concatenate strings however you want, so <code>"$"t${count}""</code> will actually be equivalent to <code>"$"t${count}</code>, beginning with a quoted $-sign, followed by 't', fol... | <p>There's actually no wrapping in double quotes for variables, first quote starts, the second quote ends the quoted string. You may however concatenate strings however you want, so <code>"$"t${count}""</code> will actually be equivalent to <code>"$"t${count}</code>, beginning with a quoted $-sign, followed by 't', fol... | 387 | bash | <h1>Writing " to a file in bash</h1>
<p>Simply I need to write</p>
<pre><code>"echo" t${count} = "$"t${count}"
</code></pre>
<p>To a text file, including all the So the output would be something like:</p>
<pre><code>echo " t1 = $t1"
</code></pre>
<p>With " as they are. So I have tried:</p>
<pre><code>count=1
sav... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,377 | bash | # Writing " to a file in bash
Simply I need to write
```
"echo" t${count} = "$"t${count}"
```
To a text file, including all the So the output would be something like:
```
echo " t1 = $t1"
```
With " as they are. So I have tried:
```
count=1
saveIFS="$IFS"
IFS=$'\n'
array=($(<TEST.txt))
IFS="$saveIFS"
for i in "... | There's actually no wrapping in double quotes for variables, first quote starts, the second quote ends the quoted string. You may however concatenate strings however you want, so `"$"t${count}""` will actually be equivalent to `"$"t${count}`, beginning with a quoted $-sign, followed by 't', followed by the count-variab... |
2450224 | Insert copyright message into multiple files | 9 | 2010-03-15 20:24:34 | <p>How would you insert a copyright message at the very top of every file?</p>
| 3,236 | 253,470 | 2018-01-18 14:11:40 | 2,450,245 | 13 | 2010-03-15 20:27:50 | 220,299 | 2010-03-15 20:38:20 | https://stackoverflow.com/q/2450224 | https://stackoverflow.com/a/2450245 | <pre><code>#!/bin/bash
for file in *; do
echo "Copyright" > tempfile;
cat $file >> tempfile;
mv tempfile $file;
done
</code></pre>
<p>Recursive solution (finds all <code>.txt</code> files in all subdirectories):</p>
<pre><code>#!/bin/bash
for file in $(find . -type f -name \*.txt); do
echo "Copyright... | <pre><code>#!/bin/bash for file in *; do echo "Copyright" > tempfile; cat $file >> tempfile; mv tempfile $file; done </code></pre> <p>Recursive solution (finds all <code>.txt</code> files in all subdirectories):</p> <pre><code>#!/bin/bash for file in $(find . -type f -name \*.txt); do echo "Copyright... | 34, 390, 531 | scripting, shell, unix | <h1>Insert copyright message into multiple files</h1>
<p>How would you insert a copyright message at the very top of every file?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,378 | bash | # Insert copyright message into multiple files
How would you insert a copyright message at the very top of every file? | ```
#!/bin/bash
for file in *; do
echo "Copyright" > tempfile;
cat $file >> tempfile;
mv tempfile $file;
done
```
Recursive solution (finds all `.txt` files in all subdirectories):
```
#!/bin/bash
for file in $(find . -type f -name \*.txt); do
echo "Copyright" > copyright-file.txt;
echo "" >> copyright-file... |
1862554 | Get-ChildItem recurse as a parameter in PowerShell | 9 | 2009-12-07 20:09:09 | <p>I am looking to create a function that could toggle the ability to recurse in <a href="http://technet.microsoft.com/en-us/scriptcenter/dd772285.aspx" rel="noreferrer">cmdlet</a> <a href="http://technet.microsoft.com/en-us/library/ee176841.aspx" rel="noreferrer">Get-ChildItem</a>.</p>
<p>As a very basic example:</p>... | 6,482 | 203,493 | 2014-12-10 18:48:07 | 1,862,699 | 13 | 2009-12-07 20:31:12 | 153,982 | 2009-12-07 20:31:12 | https://stackoverflow.com/q/1862554 | https://stackoverflow.com/a/1862699 | <p>A couple of things here. First, you don't want to use [boolean] for the type of the recurse parameter. That requires that you pass an argument for the Recurse parameter on your script e.g. <code>-Recurse $true</code>. What you want is a [switch] parameter as shown below. Also, when you forward the switch value to ... | <p>A couple of things here. First, you don't want to use [boolean] for the type of the recurse parameter. That requires that you pass an argument for the Recurse parameter on your script e.g. <code>-Recurse $true</code>. What you want is a [switch] parameter as shown below. Also, when you forward the switch value to ... | 526, 24068 | powershell, powershell-1.0 | <h1>Get-ChildItem recurse as a parameter in PowerShell</h1>
<p>I am looking to create a function that could toggle the ability to recurse in <a href="http://technet.microsoft.com/en-us/scriptcenter/dd772285.aspx" rel="noreferrer">cmdlet</a> <a href="http://technet.microsoft.com/en-us/library/ee176841.aspx" rel="norefer... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,379 | bash | # Get-ChildItem recurse as a parameter in PowerShell
I am looking to create a function that could toggle the ability to recurse in [cmdlet](http://technet.microsoft.com/en-us/scriptcenter/dd772285.aspx) [Get-ChildItem](http://technet.microsoft.com/en-us/library/ee176841.aspx).
As a very basic example:
```
...
param... | A couple of things here. First, you don't want to use [boolean] for the type of the recurse parameter. That requires that you pass an argument for the Recurse parameter on your script e.g. `-Recurse $true`. What you want is a [switch] parameter as shown below. Also, when you forward the switch value to the -Recurse par... |
74862849 | Powershell ConvertTo-SecureString not recognised if run script inline from cmd | 8 | 2022-12-20 12:06:09 | <p>When running from cmd.exe</p>
<pre><code>powershell .\scripts\scriptname.ps1
</code></pre>
<p>Which has a line to convert plain text to secure string</p>
<pre><code>[securestring]$secString = ConvertTo-SecureString $SampleString -AsPlainText -Force
</code></pre>
<p>I get error:</p>
<pre><code>ConvertTo-SecureString ... | 7,119 | 6,948,066 | 2025-07-06 07:15:15 | 74,869,395 | 13 | 2022-12-20 22:12:56 | 45,375 | 2024-02-17 16:05:45 | https://stackoverflow.com/q/74862849 | https://stackoverflow.com/a/74869395 |
<p>The symptom of your call to <a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_powershell_exe" rel="nofollow noreferrer"><code>powershell.exe</code></a>, the <em>Windows PowerShell</em> CLI, from <code>cmd.exe</code> (or a batch file) implies that you've launched <cod... | <p>The symptom of your call to <a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_powershell_exe" rel="nofollow noreferrer"><code>powershell.exe</code></a>, the <em>Windows PowerShell</em> CLI, from <code>cmd.exe</code> (or a batch file) implies that you've launched <cod... | 526 | powershell | <h1>Powershell ConvertTo-SecureString not recognised if run script inline from cmd</h1>
<p>When running from cmd.exe</p>
<pre><code>powershell .\scripts\scriptname.ps1
</code></pre>
<p>Which has a line to convert plain text to secure string</p>
<pre><code>[securestring]$secString = ConvertTo-SecureString $SampleString ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,380 | bash | # Powershell ConvertTo-SecureString not recognised if run script inline from cmd
When running from cmd.exe
```
powershell .\scripts\scriptname.ps1
```
Which has a line to convert plain text to secure string
```
[securestring]$secString = ConvertTo-SecureString $SampleString -AsPlainText -Force
```
I get error:
``... | The symptom of your call to [`powershell.exe`](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_powershell_exe), the *Windows PowerShell* CLI, from `cmd.exe` (or a batch file) implies that you've launched `cmd.exe` *from [PowerShell (Core) 7+](https://github.com/PowerShell/Power... |
68928409 | How to remove environment prefix in Powershell console | 8 | 2021-08-25 18:51:43 | <p>Does anybody knows how I can remove (venv) prefix that is displayed in my Powershell Terminal window? I know that this is purely cosmetic, but I'd love to remove it since I'm using Oh My Posh.</p>
<p>I've attached screenshot.<a href="https://i.sstatic.net/U3oFK.jpg" rel="noreferrer"><img src="https://i.sstatic.net/U... | 1,870 | 13,020,973 | 2022-06-22 12:54:58 | 72,715,907 | 13 | 2022-06-22 12:54:58 | 13,020,973 | 2022-06-22 12:54:58 | https://stackoverflow.com/q/68928409 | https://stackoverflow.com/a/72715907 | <p>I've found the best solution (for my case at least).</p>
<p>Simply add: <code>$env:VIRTUAL_ENV_DISABLE_PROMPT = 1</code> to $PROFILE</p>
| <p>I've found the best solution (for my case at least).</p> <p>Simply add: <code>$env:VIRTUAL_ENV_DISABLE_PROMPT = 1</code> to $PROFILE</p> | 391, 526, 152427 | oh-my-posh, powershell, terminal | <h1>How to remove environment prefix in Powershell console</h1>
<p>Does anybody knows how I can remove (venv) prefix that is displayed in my Powershell Terminal window? I know that this is purely cosmetic, but I'd love to remove it since I'm using Oh My Posh.</p>
<p>I've attached screenshot.<a href="https://i.sstatic.n... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,381 | bash | # How to remove environment prefix in Powershell console
Does anybody knows how I can remove (venv) prefix that is displayed in my Powershell Terminal window? I know that this is purely cosmetic, but I'd love to remove it since I'm using Oh My Posh.
I've attached screenshot.[.
Simply add: `$env:VIRTUAL_ENV_DISABLE_PROMPT = 1` to $PROFILE |
69731154 | Different results from Invoke-WebRequest and Invoke-RestMethod | 8 | 2021-10-26 23:52:02 | <p>I am trying to call Azure Rest API and get Schedules of DevTestLabs. I tried Invoke-RestMethod, but it doesn't give <strong>value</strong> on <strong>"dailyRecurrence"</strong> key. But Invoke-WebRequest does.</p>
<p>What would be the reason for that?</p>
<p><strong>URL</strong></p>
<pre><code>$url = "... | 7,815 | 4,692,384 | 2024-02-14 11:55:34 | 69,731,637 | 13 | 2021-10-27 01:16:42 | 45,375 | 2023-03-13 13:57:01 | https://stackoverflow.com/q/69731154 | https://stackoverflow.com/a/69731637 |
<p>The problem:</p>
<ul>
<li><p>is merely a <em>display</em> problem,</p>
</li>
<li><p>albeit one that exposes a long-standing <em>bug</em>, still present as of PowerShell Core 7.3.3, namely that <code>[pscustomobject]</code> instances mistakenly stringify to the <em>empty string</em> - see <a href="https://github.com... | <p>The problem:</p> <ul> <li><p>is merely a <em>display</em> problem,</p> </li> <li><p>albeit one that exposes a long-standing <em>bug</em>, still present as of PowerShell Core 7.3.3, namely that <code>[pscustomobject]</code> instances mistakenly stringify to the <em>empty string</em> - see <a href="https://github.com... | 526, 134943, 138645, 145532 | azure-rest-api, invoke-restmethod, invoke-webrequest, powershell | <h1>Different results from Invoke-WebRequest and Invoke-RestMethod</h1>
<p>I am trying to call Azure Rest API and get Schedules of DevTestLabs. I tried Invoke-RestMethod, but it doesn't give <strong>value</strong> on <strong>"dailyRecurrence"</strong> key. But Invoke-WebRequest does.</p>
<p>What would be the ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,382 | bash | # Different results from Invoke-WebRequest and Invoke-RestMethod
I am trying to call Azure Rest API and get Schedules of DevTestLabs. I tried Invoke-RestMethod, but it doesn't give **value** on **"dailyRecurrence"** key. But Invoke-WebRequest does.
What would be the reason for that?
**URL**
```
$url = "https://mana... | The problem:
- is merely a *display* problem,
- albeit one that exposes a long-standing *bug*, still present as of PowerShell Core 7.3.3, namely that `[pscustomobject]` instances mistakenly stringify to the *empty string* - see [GitHub issue #6163](https://github.com/PowerShell/PowerShell/issues/6163).
In short:
- T... |
65782810 | How to conditionally add a pipeline element in bash | 8 | 2021-01-18 22:18:14 | <p>I need to form a pipeline of various commands. Some elements of the pipeline, or sequences of elements, are only relevant when some condition holds. Now, I could write:</p>
<pre><code>if [[ $whatever ]]; then
cmd1 | cmd2 | cmd3 | cmd4
else
cmd1 | cmd4
fi
</code></pre>
<p>but that means repeating <code>cmd1</co... | 862 | 1,593,077 | 2021-01-18 22:52:38 | 65,783,008 | 13 | 2021-01-18 22:37:22 | 8,133,920 | 2021-01-18 22:37:22 | https://stackoverflow.com/q/65782810 | https://stackoverflow.com/a/65783008 | <p>Your attempt fails because special symbols lose their syntactical value after expansion. <code>eval</code> is a way, but as we know it is prone to code injection so it is best avoided. We can try</p>
<pre><code>cmd1 |
if [ condition ]; then
cmd2 | cmd3
else
cat
fi |
cmd4
</code></pre>
<p>Though I'd love to sk... | <p>Your attempt fails because special symbols lose their syntactical value after expansion. <code>eval</code> is a way, but as we know it is prone to code injection so it is best avoided. We can try</p> <pre><code>cmd1 | if [ condition ]; then cmd2 | cmd3 else cat fi | cmd4 </code></pre> <p>Though I'd love to sk... | 387, 2844, 5813, 53502 | bash, conditional-execution, pipe, pipeline | <h1>How to conditionally add a pipeline element in bash</h1>
<p>I need to form a pipeline of various commands. Some elements of the pipeline, or sequences of elements, are only relevant when some condition holds. Now, I could write:</p>
<pre><code>if [[ $whatever ]]; then
cmd1 | cmd2 | cmd3 | cmd4
else
cmd1 | cmd... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,383 | bash | # How to conditionally add a pipeline element in bash
I need to form a pipeline of various commands. Some elements of the pipeline, or sequences of elements, are only relevant when some condition holds. Now, I could write:
```
if [[ $whatever ]]; then
cmd1 | cmd2 | cmd3 | cmd4
else
cmd1 | cmd4
fi
```
but that ... | Your attempt fails because special symbols lose their syntactical value after expansion. `eval` is a way, but as we know it is prone to code injection so it is best avoided. We can try
```
cmd1 |
if [ condition ]; then
cmd2 | cmd3
else
cat
fi |
cmd4
```
Though I'd love to skip `cat`, I couldn't find a way. Rea... |
65707623 | Export environment variables to JSON in Bash | 8 | 2021-01-13 18:16:08 | <p>The environment variables can be printed by using <code>export</code> or <code>printenv</code> in bash, but how can we convert the output into JSON format and then store them in a variable.</p>
| 3,403 | 7,338,180 | 2024-03-28 16:10:43 | 65,707,749 | 13 | 2021-01-13 18:24:55 | 10,248,678 | 2024-03-28 16:10:43 | https://stackoverflow.com/q/65707623 | https://stackoverflow.com/a/65707749 | <p>JQ does that for you and populates an internal variable called <code>ENV</code> with the result, which can be exported to a shell variable like so:</p>
<pre><code>var=$(jq -n '$ENV')
</code></pre>
<p>To remove junk variables like <code>_</code>, <code>SHLVL</code>, etc. from the list you can use the <a href="https:/... | <p>JQ does that for you and populates an internal variable called <code>ENV</code> with the result, which can be exported to a shell variable like so:</p> <pre><code>var=$(jq -n '$ENV') </code></pre> <p>To remove junk variables like <code>_</code>, <code>SHLVL</code>, etc. from the list you can use the <a href="https:/... | 387, 1508, 9013, 105170 | bash, environment-variables, jq, json | <h1>Export environment variables to JSON in Bash</h1>
<p>The environment variables can be printed by using <code>export</code> or <code>printenv</code> in bash, but how can we convert the output into JSON format and then store them in a variable.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,384 | bash | # Export environment variables to JSON in Bash
The environment variables can be printed by using `export` or `printenv` in bash, but how can we convert the output into JSON format and then store them in a variable. | JQ does that for you and populates an internal variable called `ENV` with the result, which can be exported to a shell variable like so:
```
var=$(jq -n '$ENV')
```
To remove junk variables like `_`, `SHLVL`, etc. from the list you can use the [`del`](https://stedolan.github.io/jq/manual/#del(path_expression)) functi... |
63474689 | How do I upload a file to Azurite from terminal? | 8 | 2020-08-18 18:34:51 | <p>I'm using Azurite and wish to create a container/upload a blob etc from the bash terminal!</p>
<p>I've tried using the Azure CLI like this::</p>
<pre><code>az storage container create --account-name devstoreaccount1
--account-key Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGM... | 5,547 | 4,908,657 | 2024-08-01 15:49:38 | 63,496,841 | 13 | 2020-08-20 00:47:50 | 10,505,040 | 2020-08-20 00:47:50 | https://stackoverflow.com/q/63474689 | https://stackoverflow.com/a/63496841 | <p>According to my test, when we account key and account name with Azure CLI to create blob container, cli will use <code>https</code> protocol to connect Azurite. But, in default, Azurite just support <code>http</code> protocol. For more details, please refer to <a href="https://github.com/Azure/Azurite" rel="noreferr... | <p>According to my test, when we account key and account name with Azure CLI to create blob container, cli will use <code>https</code> protocol to connect Azurite. But, in default, Azurite just support <code>http</code> protocol. For more details, please refer to <a href="https://github.com/Azure/Azurite" rel="noreferr... | 387, 391, 14158, 108105 | azure, azure-cli, bash, terminal | <h1>How do I upload a file to Azurite from terminal?</h1>
<p>I'm using Azurite and wish to create a container/upload a blob etc from the bash terminal!</p>
<p>I've tried using the Azure CLI like this::</p>
<pre><code>az storage container create --account-name devstoreaccount1
--account-key Eby8vdM02xNOcqFlqUwJPLlmEt... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,385 | bash | # How do I upload a file to Azurite from terminal?
I'm using Azurite and wish to create a container/upload a blob etc from the bash terminal!
I've tried using the Azure CLI like this::
```
az storage container create --account-name devstoreaccount1
--account-key Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2... | According to my test, when we account key and account name with Azure CLI to create blob container, cli will use `https` protocol to connect Azurite. But, in default, Azurite just support `http` protocol. For more details, please refer to [here](https://github.com/Azure/Azurite)
[![enter image description here](https... |
59911669 | Proper way to use a trap to exit a shell-script in ZSH? | 8 | 2020-01-25 17:26:04 | <p>I'm having trouble getting a trap function in a Zshell-script to work without exiting the shell. I have a simple countdown timer that I want to be able to interrupt using ^C, and when I do I want the trap to change the cursor status in the terminal. </p>
<p>My syntax is:</p>
<p>#!/bin/zsh</p>
<pre><code>trap 'tpu... | 6,489 | 10,425,369 | 2020-01-27 04:26:25 | 59,925,138 | 13 | 2020-01-27 04:26:25 | 11,865,893 | 2020-01-27 04:26:25 | https://stackoverflow.com/q/59911669 | https://stackoverflow.com/a/59925138 | <h2>Handling Signals With Trap</h2>
<pre class="lang-sh prettyprint-override"><code>TRAPINT() {
echo "TRAPINT() called: ^C was pressed"
}
TRAPQUIT() {
echo "TRAPQUIT() called: ^\\ was pressed"
}
TRAPTERM() {
echo "TRAPTERM() called: a 'kill' command was aimed at this program's process ID"
}
TRAPEXIT() {... | <h2>Handling Signals With Trap</h2> <pre class="lang-sh prettyprint-override"><code>TRAPINT() { echo "TRAPINT() called: ^C was pressed" } TRAPQUIT() { echo "TRAPQUIT() called: ^\\ was pressed" } TRAPTERM() { echo "TRAPTERM() called: a 'kill' command was aimed at this program's process ID" } TRAPEXIT() {... | 390, 531, 1231, 3791 | command-line, scripting, shell, zsh | <h1>Proper way to use a trap to exit a shell-script in ZSH?</h1>
<p>I'm having trouble getting a trap function in a Zshell-script to work without exiting the shell. I have a simple countdown timer that I want to be able to interrupt using ^C, and when I do I want the trap to change the cursor status in the terminal. </... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,386 | bash | # Proper way to use a trap to exit a shell-script in ZSH?
I'm having trouble getting a trap function in a Zshell-script to work without exiting the shell. I have a simple countdown timer that I want to be able to interrupt using ^C, and when I do I want the trap to change the cursor status in the terminal.
My syntax ... | ## Handling Signals With Trap
```
TRAPINT() {
echo "TRAPINT() called: ^C was pressed"
}
TRAPQUIT() {
echo "TRAPQUIT() called: ^\\ was pressed"
}
TRAPTERM() {
echo "TRAPTERM() called: a 'kill' command was aimed at this program's process ID"
}
TRAPEXIT() {
echo "TRAPEXIT() called: happens at the end o... |
55191548 | Write-Information does not show in a file transcribed by Start-Transcript | 8 | 2019-03-15 22:40:11 | <p>I'm using PowerShell 5.1 and I am trying to determine why <code>Write-Information</code> messages do not show in the transcript log created by <code>Start-Transcript</code> unless I set <code>$InformationPreference</code> to <code>SilentlyContinue</code>. I want to both display the messages in the console <em>and</e... | 3,687 | 8,517,394 | 2025-03-28 23:57:56 | 55,198,981 | 13 | 2019-03-16 16:28:55 | 45,375 | 2025-03-28 23:57:56 | https://stackoverflow.com/q/55191548 | https://stackoverflow.com/a/55198981 | <p>What you're seeing is a <strong><em>bug</em> in <em>Windows PowerShell</em></strong> that has been <strong>fixed in <a href="https://github.com/PowerShell/PowerShell/blob/master/README.md" rel="nofollow noreferrer"><em>PowerShell (Core) 7</em></a></strong> (though note that <em>other</em> transcript-related problems... | <p>What you're seeing is a <strong><em>bug</em> in <em>Windows PowerShell</em></strong> that has been <strong>fixed in <a href="https://github.com/PowerShell/PowerShell/blob/master/README.md" rel="nofollow noreferrer"><em>PowerShell (Core) 7</em></a></strong> (though note that <em>other</em> transcript-related problems... | 526, 942, 134758, 153947 | logging, powershell, powershell-cmdlet, powershell-v5.1 | <h1>Write-Information does not show in a file transcribed by Start-Transcript</h1>
<p>I'm using PowerShell 5.1 and I am trying to determine why <code>Write-Information</code> messages do not show in the transcript log created by <code>Start-Transcript</code> unless I set <code>$InformationPreference</code> to <code>Sil... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,387 | bash | # Write-Information does not show in a file transcribed by Start-Transcript
I'm using PowerShell 5.1 and I am trying to determine why `Write-Information` messages do not show in the transcript log created by `Start-Transcript` unless I set `$InformationPreference` to `SilentlyContinue`. I want to both display the mess... | What you're seeing is a ***bug* in *Windows PowerShell*** that has been **fixed in [*PowerShell (Core) 7*](https://github.com/PowerShell/PowerShell/blob/master/README.md)** (though note that *other* transcript-related problems persist; see [GitHub issue #4645](https://github.com/PowerShell/PowerShell/issues/4645)).
Gi... |
54169151 | du: Follow symlinks if symlink points to outside directories, don't follow otherwise | 8 | 2019-01-13 13:04:50 | <p>I wonder whether there's some rather simple shell incantation to calculate the disk usage of a directory (using the <code>du</code> command) but with the following requirements: symlinks that point to files/subdirectories inside the directory should not be followed, but symlinks to outside files/subdirectories shoul... | 13,842 | 10,814,896 | 2019-01-13 15:28:21 | 54,170,336 | 13 | 2019-01-13 15:28:21 | 9,288,200 | 2019-01-13 15:28:21 | https://stackoverflow.com/q/54169151 | https://stackoverflow.com/a/54170336 | <p>Unless I have missed something in your question, <code>du</code> already does that when instructed to follow symlinks (<code>-L</code>).</p>
<p>I got two trees:</p>
<p><code>tree1/</code>:</p>
<pre><code>├── dir1
│ └── file
├── dirA -> ../tree2/dirA
└── link1 -> dir1
</code></pre>
<p>and <code>tree2/</co... | <p>Unless I have missed something in your question, <code>du</code> already does that when instructed to follow symlinks (<code>-L</code>).</p> <p>I got two trees:</p> <p><code>tree1/</code>:</p> <pre><code>├── dir1 │ └── file ├── dirA -> ../tree2/dirA └── link1 -> dir1 </code></pre> <p>and <code>tree2/</co... | 387, 580 | bash, perl | <h1>du: Follow symlinks if symlink points to outside directories, don't follow otherwise</h1>
<p>I wonder whether there's some rather simple shell incantation to calculate the disk usage of a directory (using the <code>du</code> command) but with the following requirements: symlinks that point to files/subdirectories i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,388 | bash | # du: Follow symlinks if symlink points to outside directories, don't follow otherwise
I wonder whether there's some rather simple shell incantation to calculate the disk usage of a directory (using the `du` command) but with the following requirements: symlinks that point to files/subdirectories inside the directory ... | Unless I have missed something in your question, `du` already does that when instructed to follow symlinks (`-L`).
I got two trees:
`tree1/`:
```
├── dir1
│ └── file
├── dirA -> ../tree2/dirA
└── link1 -> dir1
```
and `tree2/`:
```
.
└── dirA
└── file
```
File is in both cases 1MB in size.
Now run `du -shL... |
52879234 | Bash format string. Substitute placeholders with values. | 8 | 2018-10-18 17:09:52 | <p>I would like to format string using linux bash:</p>
<pre><code>"<username>{0}</username><password>{1}</password>".format("user", "pass")
</code></pre>
<p>Output:</p>
<pre><code><username>user</username><password>pass</password>
</code></pre>
<p>What is the correct ... | 11,532 | 3,014,866 | 2018-10-18 18:55:13 | 52,879,336 | 13 | 2018-10-18 17:17:25 | 10,248,678 | 2018-10-18 18:55:13 | https://stackoverflow.com/q/52879234 | https://stackoverflow.com/a/52879336 | <p>From <code>printf --help</code>:</p>
<blockquote>
<p><strong>-v <em>var</em></strong> assign the output to shell variable VAR rather than display it on the standard output</p>
</blockquote>
<p>So, what you need to do is just:</p>
<pre><code>FMT='<username>%s</username><password>%s... | <p>From <code>printf --help</code>:</p> <blockquote> <p><strong>-v <em>var</em></strong> assign the output to shell variable VAR rather than display it on the standard output</p> </blockquote> <p>So, what you need to do is just:</p> <pre><code>FMT='<username>%s</username><password>%s... | 139, 387, 10232 | bash, string, string-formatting | <h1>Bash format string. Substitute placeholders with values.</h1>
<p>I would like to format string using linux bash:</p>
<pre><code>"<username>{0}</username><password>{1}</password>".format("user", "pass")
</code></pre>
<p>Output:</p>
<pre><code><username>user</username><passwo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,389 | bash | # Bash format string. Substitute placeholders with values.
I would like to format string using linux bash:
```
"<username>{0}</username><password>{1}</password>".format("user", "pass")
```
Output:
```
<username>user</username><password>pass</password>
```
What is the correct command to do this? I can use any other... | From `printf --help`:
> **-v *var*** assign the output to shell variable VAR rather than display it on the standard output
So, what you need to do is just:
```
FMT='<username>%s</username><password>%s</password>'
printf -v VAR "$FMT" user pass
``` |
52065016 | How to replace "\n" string with a new line in Unix Bash script | 8 | 2018-08-28 19:29:36 | <p>Cannot seem to find an answer to this one online...</p>
<p>I have a string variable (externally sourced) with new lines <code>"\n"</code> encoded as strings.</p>
<p>I want to replace those strings with actual new line carriage returns. The code below can achieve this...</p>
<pre><code>echo $EXT_DESCR | sed 's/\\... | 19,003 | 1,148,545 | 2018-08-28 19:55:22 | 52,065,116 | 13 | 2018-08-28 19:37:31 | 6,176,817 | 2018-08-28 19:37:31 | https://stackoverflow.com/q/52065016 | https://stackoverflow.com/a/52065116 | <p>No need for <code>sed</code>, using <a href="https://www.gnu.org/software/bash/manual/bash.html#Shell-Parameter-Expansion" rel="noreferrer">parameter expansion</a>:</p>
<pre><code>$ foo='1\n2\n3'; echo "${foo//'\n'/$'\n'}"
1
2
3
</code></pre>
<hr>
<p>With <code>bash 4.4</code> or newer, you can use the <code>E<... | <p>No need for <code>sed</code>, using <a href="https://www.gnu.org/software/bash/manual/bash.html#Shell-Parameter-Expansion" rel="noreferrer">parameter expansion</a>:</p> <pre><code>$ foo='1\n2\n3'; echo "${foo//'\n'/$'\n'}" 1 2 3 </code></pre> <hr> <p>With <code>bash 4.4</code> or newer, you can use the <code>E<... | 34, 276, 387, 390 | bash, shell, unix, variables | <h1>How to replace "\n" string with a new line in Unix Bash script</h1>
<p>Cannot seem to find an answer to this one online...</p>
<p>I have a string variable (externally sourced) with new lines <code>"\n"</code> encoded as strings.</p>
<p>I want to replace those strings with actual new line carriage returns. The co... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,390 | bash | # How to replace "\n" string with a new line in Unix Bash script
Cannot seem to find an answer to this one online...
I have a string variable (externally sourced) with new lines `"\n"` encoded as strings.
I want to replace those strings with actual new line carriage returns. The code below can achieve this...
```
e... | No need for `sed`, using [parameter expansion](https://www.gnu.org/software/bash/manual/bash.html#Shell-Parameter-Expansion):
```
$ foo='1\n2\n3'; echo "${foo//'\n'/$'\n'}"
1
2
3
```
---
With `bash 4.4` or newer, you can use the `E` operator in [`${parameter@operator}`](https://www.gnu.org/software/bash/manual/htm... |
49583470 | Block a file with Powershell | 8 | 2018-03-31 01:57:47 | <p>I want to block (not unblock) a file with Powershell. I want to cause Windows to believe that a file on disk was downloaded from the internet, or whatever other scenario exists such that files become blocked. I need this to test how some software I'm developing behaves in the presence of a blocked file.</p>
| 4,779 | 356,790 | 2019-07-05 01:51:08 | 49,584,424 | 13 | 2018-03-31 05:03:02 | 1,029,145 | 2018-03-31 05:03:02 | https://stackoverflow.com/q/49583470 | https://stackoverflow.com/a/49584424 | <p>If you're just trying to add the zone identifier you could try something like this:</p>
<pre class="lang-bsh prettyprint-override"><code>$data = "[ZoneTransfer]
ZoneId=3"
Set-Content example.txt -Stream "Zone.Identifier" -Value $data
</code></pre>
| <p>If you're just trying to add the zone identifier you could try something like this:</p> <pre class="lang-bsh prettyprint-override"><code>$data = "[ZoneTransfer] ZoneId=3" Set-Content example.txt -Stream "Zone.Identifier" -Value $data </code></pre> | 64, 526, 5310, 65946, 95686 | alternate-data-stream, file, powershell, powershell-4.0, windows | <h1>Block a file with Powershell</h1>
<p>I want to block (not unblock) a file with Powershell. I want to cause Windows to believe that a file on disk was downloaded from the internet, or whatever other scenario exists such that files become blocked. I need this to test how some software I'm developing behaves in the ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,391 | bash | # Block a file with Powershell
I want to block (not unblock) a file with Powershell. I want to cause Windows to believe that a file on disk was downloaded from the internet, or whatever other scenario exists such that files become blocked. I need this to test how some software I'm developing behaves in the presence of... | If you're just trying to add the zone identifier you could try something like this:
```
$data = "[ZoneTransfer]
ZoneId=3"
Set-Content example.txt -Stream "Zone.Identifier" -Value $data
``` |
46538973 | How to use Test-Path on a directory containing square brackets in the name | 8 | 2017-10-03 07:10:01 | <p>I have a series of directories that have been created with square brackets in their name. For some inexplicable reason, the <code>Test-Path</code> command returns <code>$false</code> when I run it against these directories, but returns <code>$true</code> if I run the same command against a directory without square ... | 3,535 | 3,354,235 | 2017-10-03 07:46:38 | 46,539,377 | 13 | 2017-10-03 07:33:09 | 2,796,058 | 2017-10-03 07:46:38 | https://stackoverflow.com/q/46538973 | https://stackoverflow.com/a/46539377 | <p>You can use the <code>-LiteralPath</code> parameter for this:</p>
<pre><code>Test-Path -LiteralPath '[s]50AF43AF'
</code></pre>
<p>Which is probably a better option than adding backticks if you're processing more than one path:</p>
<pre><code>'[s]4343224D','[s]50AF43AF' | ForEach-Object { Test-Path -LiteralPath $... | <p>You can use the <code>-LiteralPath</code> parameter for this:</p> <pre><code>Test-Path -LiteralPath '[s]50AF43AF' </code></pre> <p>Which is probably a better option than adding backticks if you're processing more than one path:</p> <pre><code>'[s]4343224D','[s]50AF43AF' | ForEach-Object { Test-Path -LiteralPath $... | 526 | powershell | <h1>How to use Test-Path on a directory containing square brackets in the name</h1>
<p>I have a series of directories that have been created with square brackets in their name. For some inexplicable reason, the <code>Test-Path</code> command returns <code>$false</code> when I run it against these directories, but retu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,392 | bash | # How to use Test-Path on a directory containing square brackets in the name
I have a series of directories that have been created with square brackets in their name. For some inexplicable reason, the `Test-Path` command returns `$false` when I run it against these directories, but returns `$true` if I run the same co... | You can use the `-LiteralPath` parameter for this:
```
Test-Path -LiteralPath '[s]50AF43AF'
```
Which is probably a better option than adding backticks if you're processing more than one path:
```
'[s]4343224D','[s]50AF43AF' | ForEach-Object { Test-Path -LiteralPath $_ }
``` |
45201225 | What is the difference between base64 and MIME base 64? | 8 | 2017-07-19 21:20:07 | <p>I just spent way too much time banging my head against an SMTP server because it didn't like the base64 encoded credentials I was using. Turns out that when I chose NOT to use <code>perl</code> like so many instructions on the internet say to use, I was making a big mistake. Why is this? I thought base64 was a singl... | 5,572 | 117,471 | 2018-01-18 00:50:26 | 45,201,330 | 13 | 2017-07-19 21:27:40 | 744,178 | 2017-07-19 21:27:40 | https://stackoverflow.com/q/45201225 | https://stackoverflow.com/a/45201330 | <p>This is not a Perl vs. everyone else thing; this is a "using Bash's <code><<<</code> construct" vs. "not doing that" thing. Though not explicitly documented (at least not in the manpage on Ubuntu Xenial), <a href="https://unix.stackexchange.com/q/20157/11006">Bash appends a newline to herestrings (the <cod... | <p>This is not a Perl vs. everyone else thing; this is a "using Bash's <code><<<</code> construct" vs. "not doing that" thing. Though not explicitly documented (at least not in the manpage on Ubuntu Xenial), <a href="https://unix.stackexchange.com/q/20157/11006">Bash appends a newline to herestrings (the <cod... | 16, 58, 390, 580, 1492 | linux, mime, perl, python, shell | <h1>What is the difference between base64 and MIME base 64?</h1>
<p>I just spent way too much time banging my head against an SMTP server because it didn't like the base64 encoded credentials I was using. Turns out that when I chose NOT to use <code>perl</code> like so many instructions on the internet say to use, I wa... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,393 | bash | # What is the difference between base64 and MIME base 64?
I just spent way too much time banging my head against an SMTP server because it didn't like the base64 encoded credentials I was using. Turns out that when I chose NOT to use `perl` like so many instructions on the internet say to use, I was making a big mista... | This is not a Perl vs. everyone else thing; this is a "using Bash's `<<<` construct" vs. "not doing that" thing. Though not explicitly documented (at least not in the manpage on Ubuntu Xenial), [Bash appends a newline to herestrings (the `<<<` thing) when passing them to commands](https://unix.stackexchange.com/q/20157... |
44524190 | Iterate over $PATH variable using shell script | 8 | 2017-06-13 14:19:28 | <p>If I type <code>echo $PATH</code> in the terminal I get the following result:</p>
<pre><code>/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/home/fnorbert/.local/bin:/home/fnorbert/bin
</code></pre>
<p>I want to iterate over these paths using a shell script, but I do not know how to do that.<br>
I tried the fol... | 2,590 | 5,574,096 | 2020-12-01 07:50:29 | 44,524,309 | 13 | 2017-06-13 14:25:10 | 548,225 | 2017-06-13 14:31:14 | https://stackoverflow.com/q/44524190 | https://stackoverflow.com/a/44524309 | <p>You can use <code>read</code> with delimiter set as <code>:</code></p>
<pre><code>while read -d ':' p; do
echo "$p"
done <<< "$PATH:"
</code></pre>
| <p>You can use <code>read</code> with delimiter set as <code>:</code></p> <pre><code>while read -d ':' p; do echo "$p" done <<< "$PATH:" </code></pre> | 34, 58, 387, 390 | bash, linux, shell, unix | <h1>Iterate over $PATH variable using shell script</h1>
<p>If I type <code>echo $PATH</code> in the terminal I get the following result:</p>
<pre><code>/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/home/fnorbert/.local/bin:/home/fnorbert/bin
</code></pre>
<p>I want to iterate over these paths using a shell scrip... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,394 | bash | # Iterate over $PATH variable using shell script
If I type `echo $PATH` in the terminal I get the following result:
```
/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/home/fnorbert/.local/bin:/home/fnorbert/bin
```
I want to iterate over these paths using a shell script, but I do not know how to do that.
I tri... | You can use `read` with delimiter set as `:`
```
while read -d ':' p; do
echo "$p"
done <<< "$PATH:"
``` |
42966665 | Multiple shebangs to work for different OS | 8 | 2017-03-23 03:21:54 | <p>Is there a way I can have multiple shebangs?</p>
<p>So I can call <code>#!/usr/bin/env python3</code> on Ubuntu, but MacOS doesn't seem to have an equivalent, and I would like to call <code>#!/usr/bin/python3</code> instead on it.</p>
<p>So is it possible to do something like:</p>
<pre><code>#!/usr/bin/env python... | 5,587 | 6,554,121 | 2018-10-18 04:22:56 | 42,966,709 | 13 | 2017-03-23 03:25:28 | 6,862,601 | 2018-10-18 04:20:49 | https://stackoverflow.com/q/42966665 | https://stackoverflow.com/a/42966709 | <p>We can't have multiple shebang lines - there can only be one and it should always be the first line.</p>
<p>If you need to support multiple versions of Python based on OS, it is best to write a small shell wrapper that invokes your python script with the right interpreter, probably with an <code>exec</code>.</p>
<... | <p>We can't have multiple shebang lines - there can only be one and it should always be the first line.</p> <p>If you need to support multiple versions of Python based on OS, it is best to write a small shell wrapper that invokes your python script with the right interpreter, probably with an <code>exec</code>.</p> <... | 16, 58, 369, 390, 8780 | linux, macos, python, shebang, shell | <h1>Multiple shebangs to work for different OS</h1>
<p>Is there a way I can have multiple shebangs?</p>
<p>So I can call <code>#!/usr/bin/env python3</code> on Ubuntu, but MacOS doesn't seem to have an equivalent, and I would like to call <code>#!/usr/bin/python3</code> instead on it.</p>
<p>So is it possible to do s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,395 | bash | # Multiple shebangs to work for different OS
Is there a way I can have multiple shebangs?
So I can call `#!/usr/bin/env python3` on Ubuntu, but MacOS doesn't seem to have an equivalent, and I would like to call `#!/usr/bin/python3` instead on it.
So is it possible to do something like:
```
#!/usr/bin/env python3
#!... | We can't have multiple shebang lines - there can only be one and it should always be the first line.
If you need to support multiple versions of Python based on OS, it is best to write a small shell wrapper that invokes your python script with the right interpreter, probably with an `exec`.
macOS does have `/usr/bin/... |
42142263 | Keep SSH running on Windows 10 Bash | 8 | 2017-02-09 16:44:26 | <p>I am having a problem keeping SSH running on the Windows Subsystem for Linux. It seems that if a shell is not open and running bash, all processes in the subsystem are killed. Is there a way to stop this? </p>
<p>I have tried to create a service using nssm but have not be able to get it working. Now I am attempting... | 6,933 | 7,250,252 | 2018-09-04 10:39:03 | 42,798,671 | 13 | 2017-03-14 23:51:25 | 229,232 | 2018-02-07 01:08:32 | https://stackoverflow.com/q/42142263 | https://stackoverflow.com/a/42798671 | <p>You have to keep at least one bash console open in order for background tasks to keep running: As soon as you close your last open bash console, WSL tears-down all running processes.</p>
<p>And, yes, we're working on improving this scenario in the future ;)</p>
<h2>Update 2018-02-06</h2>
<p>In recent Windows 10 I... | <p>You have to keep at least one bash console open in order for background tasks to keep running: As soon as you close your last open bash console, WSL tears-down all running processes.</p> <p>And, yes, we're working on improving this scenario in the future ;)</p> <h2>Update 2018-02-06</h2> <p>In recent Windows 10 I... | 58, 64, 386, 387, 119526 | bash, linux, ssh, windows, windows-subsystem-for-linux | <h1>Keep SSH running on Windows 10 Bash</h1>
<p>I am having a problem keeping SSH running on the Windows Subsystem for Linux. It seems that if a shell is not open and running bash, all processes in the subsystem are killed. Is there a way to stop this? </p>
<p>I have tried to create a service using nssm but have not b... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,396 | bash | # Keep SSH running on Windows 10 Bash
I am having a problem keeping SSH running on the Windows Subsystem for Linux. It seems that if a shell is not open and running bash, all processes in the subsystem are killed. Is there a way to stop this?
I have tried to create a service using nssm but have not be able to get it ... | You have to keep at least one bash console open in order for background tasks to keep running: As soon as you close your last open bash console, WSL tears-down all running processes.
And, yes, we're working on improving this scenario in the future ;)
## Update 2018-02-06
In recent Windows 10 Insider builds, we added... |
41899075 | Running sed on string, benefit of using "echo" + "pipe" over "<<<" | 8 | 2017-01-27 16:52:27 | <p>Commonly I see people manipulating strings using sed as follows:</p>
<pre><code>echo "./asdf" | sed -n -e "s%./%%p"
</code></pre>
<p>I recently learned I can also do:</p>
<pre><code>sed -n -e "s%./%%p" <<< "./asdf"
</code></pre>
<p>Is there a reason to avoid the latter?
For instance, is it bash-specific... | 7,522 | 4,039,619 | 2017-01-27 17:31:58 | 41,899,209 | 13 | 2017-01-27 16:59:05 | 14,122 | 2017-01-27 17:31:58 | https://stackoverflow.com/q/41899075 | https://stackoverflow.com/a/41899209 | <h3>How should I trim <code>./</code> from the beginning of a path (or perform other simple string manipulations)?</h3>
<p>Bash's built-in syntax for this is called <a href="http://wiki.bash-hackers.org/syntax/pe" rel="noreferrer">parameter expansion</a>. <code>${s#./}</code> will expand <code>$s</code> with any leadi... | <h3>How should I trim <code>./</code> from the beginning of a path (or perform other simple string manipulations)?</h3> <p>Bash's built-in syntax for this is called <a href="http://wiki.bash-hackers.org/syntax/pe" rel="noreferrer">parameter expansion</a>. <code>${s#./}</code> will expand <code>$s</code> with any leadi... | 345, 387, 5282 | bash, io, sed | <h1>Running sed on string, benefit of using "echo" + "pipe" over "<<<"</h1>
<p>Commonly I see people manipulating strings using sed as follows:</p>
<pre><code>echo "./asdf" | sed -n -e "s%./%%p"
</code></pre>
<p>I recently learned I can also do:</p>
<pre><code>sed -n -e "s%./%%p" <<< "./asdf"
</code></pre>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,397 | bash | # Running sed on string, benefit of using "echo" + "pipe" over "<<<"
Commonly I see people manipulating strings using sed as follows:
```
echo "./asdf" | sed -n -e "s%./%%p"
```
I recently learned I can also do:
```
sed -n -e "s%./%%p" <<< "./asdf"
```
Is there a reason to avoid the latter?
For instance, is it bas... | ### How should I trim `./` from the beginning of a path (or perform other simple string manipulations)?
Bash's built-in syntax for this is called [parameter expansion](http://wiki.bash-hackers.org/syntax/pe). `${s#./}` will expand `$s` with any leading `./` trimmed internal to the shell, with no subprocess or other ov... |
40794622 | Azure: Powershell: Set-AzureRmWebApp: How to set the "alwaysOn" property | 8 | 2016-11-24 21:18:48 | <p>I am running Powershell 5 and trying to manipulate my Azure WebApp object using <strong>Set-AzureRmWebApp</strong> (and NOT Set-AzureResource) to set the "Always On" property of the web app.</p>
<p>My basic code snippet starts with a running web app named <strong>"myWebApp"</strong>, and looks like this:</p>
<pre... | 7,063 | 33,890 | 2016-11-25 15:31:45 | 40,798,208 | 13 | 2016-11-25 05:22:14 | 7,005,159 | 2016-11-25 05:22:14 | https://stackoverflow.com/q/40794622 | https://stackoverflow.com/a/40798208 | <p><strong>"Always On"</strong> is not supported if WebApp is in a free Service Plan tier. If the WebApp is in a free tier, please scale up the App Service Plan. Please refer to the <a href="https://learn.microsoft.com/en-us/azure/app-service/azure-web-sites-web-hosting-plans-in-depth-overview#scale-an-app-service-plan... | <p><strong>"Always On"</strong> is not supported if WebApp is in a free Service Plan tier. If the WebApp is in a free tier, please scale up the App Service Plan. Please refer to the <a href="https://learn.microsoft.com/en-us/azure/app-service/azure-web-sites-web-hosting-plans-in-depth-overview#scale-an-app-service-plan... | 14158, 81879, 108005 | azure, azure-powershell, azure-resource-manager | <h1>Azure: Powershell: Set-AzureRmWebApp: How to set the "alwaysOn" property</h1>
<p>I am running Powershell 5 and trying to manipulate my Azure WebApp object using <strong>Set-AzureRmWebApp</strong> (and NOT Set-AzureResource) to set the "Always On" property of the web app.</p>
<p>My basic code snippet starts with a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,398 | bash | # Azure: Powershell: Set-AzureRmWebApp: How to set the "alwaysOn" property
I am running Powershell 5 and trying to manipulate my Azure WebApp object using **Set-AzureRmWebApp** (and NOT Set-AzureResource) to set the "Always On" property of the web app.
My basic code snippet starts with a running web app named **"myWe... | **"Always On"** is not supported if WebApp is in a free Service Plan tier. If the WebApp is in a free tier, please scale up the App Service Plan. Please refer to the [document](https://learn.microsoft.com/en-us/azure/app-service/azure-web-sites-web-hosting-plans-in-depth-overview#scale-an-app-service-plan) for more inf... |
40450238 | Parse a changelog and extract changes for a version | 8 | 2016-11-06 14:08:31 | <p>I have a changelog file in markdown which contains all changes between each version of my app like that : </p>
<pre><code>## Version 1.0.6
* first change
* second change
* third change
## Version 1.0.5
* first foo change
* second foo change
## Version 1.0.4
* and so on...
</code></pre>
<p>What I want is to ex... | 5,604 | 3,084,502 | 2022-10-20 16:51:26 | 40,450,360 | 13 | 2016-11-06 14:21:37 | 45,375 | 2021-11-09 12:37:08 | https://stackoverflow.com/q/40450238 | https://stackoverflow.com/a/40450360 | <p>A slightly more elaborate <code>awk</code> solution, which</p>
<ul>
<li>exits once the block of interest has been printed,</li>
<li>ignores blank lines,</li>
<li>doesn't include the header line.</li>
</ul>
<pre><code>awk -v ver=1.0.5 '
/^## Version / { if (p) { exit }; if ($3 == ver) { p=1; next } } p && N... | <p>A slightly more elaborate <code>awk</code> solution, which</p> <ul> <li>exits once the block of interest has been printed,</li> <li>ignores blank lines,</li> <li>doesn't include the header line.</li> </ul> <pre><code>awk -v ver=1.0.5 ' /^## Version / { if (p) { exit }; if ($3 == ver) { p=1; next } } p && N... | 387, 390, 990, 5282, 10327 | awk, bash, sed, sh, shell | <h1>Parse a changelog and extract changes for a version</h1>
<p>I have a changelog file in markdown which contains all changes between each version of my app like that : </p>
<pre><code>## Version 1.0.6
* first change
* second change
* third change
## Version 1.0.5
* first foo change
* second foo change
## Version... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,399 | bash | # Parse a changelog and extract changes for a version
I have a changelog file in markdown which contains all changes between each version of my app like that :
```
## Version 1.0.6
* first change
* second change
* third change
## Version 1.0.5
* first foo change
* second foo change
## Version 1.0.4
* and so on..... | A slightly more elaborate `awk` solution, which
- exits once the block of interest has been printed,
- ignores blank lines,
- doesn't include the header line.
```
awk -v ver=1.0.5 '
/^## Version / { if (p) { exit }; if ($3 == ver) { p=1; next } } p && NF
' file
```
---
As script `getVersionChanges`:
```
#!/usr/bi... |
35658769 | "cat /dev/random" versus "tail -f /dev/random" | 8 | 2016-02-26 18:09:16 | <p>Statement </p>
<pre><code>cat /dev/random
</code></pre>
<p>keeps producing output, as expected, but </p>
<pre><code>tail -f /dev/random
</code></pre>
<p>hangs (at least on OSX and SUSE).
Why the latter statement hangs?</p>
| 2,764 | 2,506,597 | 2016-02-26 18:14:24 | 35,658,808 | 13 | 2016-02-26 18:11:41 | 14,122 | 2016-02-26 18:11:41 | https://stackoverflow.com/q/35658769 | https://stackoverflow.com/a/35658808 | <p><code>tail -f</code> does several things:</p>
<ol>
<li>Find the end of the stream, either by reading until reaching an EOF or by doing a seek to the end (an operation not available on <code>/dev/random</code>).</li>
<li>Back up a certain length (possibly by retaining a buffer of an appropriate length of contents re... | <p><code>tail -f</code> does several things:</p> <ol> <li>Find the end of the stream, either by reading until reaching an EOF or by doing a seek to the end (an operation not available on <code>/dev/random</code>).</li> <li>Back up a certain length (possibly by retaining a buffer of an appropriate length of contents re... | 34, 58, 197, 390, 7896 | linux, random, shell, tail, unix | <h1>"cat /dev/random" versus "tail -f /dev/random"</h1>
<p>Statement </p>
<pre><code>cat /dev/random
</code></pre>
<p>keeps producing output, as expected, but </p>
<pre><code>tail -f /dev/random
</code></pre>
<p>hangs (at least on OSX and SUSE).
Why the latter statement hangs?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,400 | bash | # "cat /dev/random" versus "tail -f /dev/random"
Statement
```
cat /dev/random
```
keeps producing output, as expected, but
```
tail -f /dev/random
```
hangs (at least on OSX and SUSE).
Why the latter statement hangs? | `tail -f` does several things:
1. Find the end of the stream, either by reading until reaching an EOF or by doing a seek to the end (an operation not available on `/dev/random`).
2. Back up a certain length (possibly by retaining a buffer of an appropriate length of contents recently read, possibly by retaining a list... |
33338128 | netcat with milliseconds interval | 8 | 2015-10-26 03:41:09 | <p>I am trying to use netcat to read a line in a file every few milliseconds, and send it to a port..</p>
<p>So far I know from netcat documentation that it can insert a time interval between each line sent:</p>
<p>This is from netcat help manual:</p>
<blockquote>
<p><code>-i</code> secs Delay interval for... | 11,060 | 703,139 | 2015-10-28 09:25:49 | 33,357,493 | 13 | 2015-10-26 23:41:05 | 2,975,998 | 2015-10-28 09:25:49 | https://stackoverflow.com/q/33338128 | https://stackoverflow.com/a/33357493 | <p>Using sleep from GNU coreutils allows to sleep for fractions of a second. So you can try:</p>
<pre><code>while read -r line ; do echo "$line"; sleep 0.001; done < "/path/to/file" | nc host port
</code></pre>
<p>In each loop the variable "line" holds one line of your file, which gets sent through netcat to the h... | <p>Using sleep from GNU coreutils allows to sleep for fractions of a second. So you can try:</p> <pre><code>while read -r line ; do echo "$line"; sleep 0.001; done < "/path/to/file" | nc host port </code></pre> <p>In each loop the variable "line" holds one line of your file, which gets sent through netcat to the h... | 58, 390, 5813, 24801 | linux, netcat, pipe, shell | <h1>netcat with milliseconds interval</h1>
<p>I am trying to use netcat to read a line in a file every few milliseconds, and send it to a port..</p>
<p>So far I know from netcat documentation that it can insert a time interval between each line sent:</p>
<p>This is from netcat help manual:</p>
<blockquote>
<p><cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,402 | bash | # netcat with milliseconds interval
I am trying to use netcat to read a line in a file every few milliseconds, and send it to a port..
So far I know from netcat documentation that it can insert a time interval between each line sent:
This is from netcat help manual:
> `-i` secs Delay interval for lines sent, ports ... | Using sleep from GNU coreutils allows to sleep for fractions of a second. So you can try:
```
while read -r line ; do echo "$line"; sleep 0.001; done < "/path/to/file" | nc host port
```
In each loop the variable "line" holds one line of your file, which gets sent through netcat to the host "host" on port "port". Aft... |
32273721 | Edit Git alias in command line | 8 | 2015-08-28 14:45:18 | <p>I am using Git for windows.</p>
<p>Right after installation, I setup some Git alias on Git bash command line. I used:
<code>git config --global alias.st status</code></p>
<p>But now, I want to change the alias to diff --stat. Then, on Git bash, I typed <code>git config --global alias.st diff --stat</code>, but it ... | 10,437 | 2,979,932 | 2015-08-28 19:45:09 | 32,278,739 | 13 | 2015-08-28 19:45:09 | 1,157,054 | 2015-08-28 19:45:09 | https://stackoverflow.com/q/32273721 | https://stackoverflow.com/a/32278739 | <p>As with any other config option you can set the value, replacing the old one, by running <code>git config --global alias.st <value here></code>. The problem you're running into is that when you want spaces in the value you're setting, you need to use quotes:</p>
<pre><code>git config --global alias.st "diff -... | <p>As with any other config option you can set the value, replacing the old one, by running <code>git config --global alias.st <value here></code>. The problem you're running into is that when you want spaces in the value you're setting, you need to use quotes:</p> <pre><code>git config --global alias.st "diff -... | 119, 387, 1448 | alias, bash, git | <h1>Edit Git alias in command line</h1>
<p>I am using Git for windows.</p>
<p>Right after installation, I setup some Git alias on Git bash command line. I used:
<code>git config --global alias.st status</code></p>
<p>But now, I want to change the alias to diff --stat. Then, on Git bash, I typed <code>git config --glo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,403 | bash | # Edit Git alias in command line
I am using Git for windows.
Right after installation, I setup some Git alias on Git bash command line. I used:
`git config --global alias.st status`
But now, I want to change the alias to diff --stat. Then, on Git bash, I typed `git config --global alias.st diff --stat`, but it seems... | As with any other config option you can set the value, replacing the old one, by running `git config --global alias.st <value here>`. The problem you're running into is that when you want spaces in the value you're setting, you need to use quotes:
```
git config --global alias.st "diff --stat"
```
Unfortunately, if y... |
31695600 | BASH_REMATCH doesn't capture | 8 | 2015-07-29 08:49:43 | <p>I'm trying to capture a part of a path in bash:</p>
<p>Input: <code>/Users/foo/.virtualenvs/venv-test-server</code></p>
<p>Code:</p>
<pre><code>#!/bin/zsh
regex="^.*\/venv-(.*)$"
if [[ $VIRTUAL_ENV =~ $regex ]] ; then
echo "Matched!"
echo ${BASH_REMATCH[1]}
fi
</code></pre>
<p>Output: <code>Matched!</code></... | 6,437 | 270,265 | 2015-07-29 17:08:53 | 31,695,639 | 13 | 2015-07-29 08:51:36 | 2,225,682 | 2015-07-29 08:51:36 | https://stackoverflow.com/q/31695600 | https://stackoverflow.com/a/31695639 | <p>The script is specifying <code>zsh</code> instead of <code>bash</code>:</p>
<pre><code>#!/bin/bash
^^^^
</code></pre>
<p>If you want to use <code>zsh</code>, you need to set <code>BASH_REMATCH</code> option before using <code>=~</code>:</p>
<pre><code>setopt KSH_ARRAYS BASH_REMATCH
</code></pre>
| <p>The script is specifying <code>zsh</code> instead of <code>bash</code>:</p> <pre><code>#!/bin/bash ^^^^ </code></pre> <p>If you want to use <code>zsh</code>, you need to set <code>BASH_REMATCH</code> option before using <code>=~</code>:</p> <pre><code>setopt KSH_ARRAYS BASH_REMATCH </code></pre> | 18, 387, 3791 | bash, regex, zsh | <h1>BASH_REMATCH doesn't capture</h1>
<p>I'm trying to capture a part of a path in bash:</p>
<p>Input: <code>/Users/foo/.virtualenvs/venv-test-server</code></p>
<p>Code:</p>
<pre><code>#!/bin/zsh
regex="^.*\/venv-(.*)$"
if [[ $VIRTUAL_ENV =~ $regex ]] ; then
echo "Matched!"
echo ${BASH_REMATCH[1]}
fi
</code></pr... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,404 | bash | # BASH_REMATCH doesn't capture
I'm trying to capture a part of a path in bash:
Input: `/Users/foo/.virtualenvs/venv-test-server`
Code:
```
#!/bin/zsh
regex="^.*\/venv-(.*)$"
if [[ $VIRTUAL_ENV =~ $regex ]] ; then
echo "Matched!"
echo ${BASH_REMATCH[1]}
fi
```
Output: `Matched!`
But the match isn't printed. Wh... | The script is specifying `zsh` instead of `bash`:
```
#!/bin/bash
^^^^
```
If you want to use `zsh`, you need to set `BASH_REMATCH` option before using `=~`:
```
setopt KSH_ARRAYS BASH_REMATCH
``` |
30431979 | Need to concatenate a string to each line of ls command output in unix | 8 | 2015-05-25 05:52:00 | <p>I am a beginer in Shell script. Below is my requirement in UNIX Korn Shell.</p>
<h3>Example:</h3>
<p>When we list files using <code>ls</code> command redirect to a file the file names will be stored as below.</p>
<pre><code>$ ls FILE*>FLIST.TXT
$ cat FLIST.TXT
FILE1
FILE2
FILE3
</code></pre>
<p>But I need output ... | 15,016 | 3,611,976 | 2015-05-25 06:15:44 | 30,432,166 | 13 | 2015-05-25 06:08:59 | 908,939 | 2015-05-25 06:13:30 | https://stackoverflow.com/q/30431979 | https://stackoverflow.com/a/30432166 | <p>You can't use <code>ls</code> alone to append data before each file. <code>ls</code> exists to list files.<br>
You will need to use other tools along side <code>ls</code>. </p>
<p>You can append to the front of each line using the <code>sed</code> command: </p>
<pre><code>cat FLIST.TXT | sed 's/^/STR,/'
</code>... | <p>You can't use <code>ls</code> alone to append data before each file. <code>ls</code> exists to list files.<br> You will need to use other tools along side <code>ls</code>. </p> <p>You can append to the front of each line using the <code>sed</code> command: </p> <pre><code>cat FLIST.TXT | sed 's/^/STR,/' </code>... | 34, 390 | shell, unix | <h1>Need to concatenate a string to each line of ls command output in unix</h1>
<p>I am a beginer in Shell script. Below is my requirement in UNIX Korn Shell.</p>
<h3>Example:</h3>
<p>When we list files using <code>ls</code> command redirect to a file the file names will be stored as below.</p>
<pre><code>$ ls FILE*>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,405 | bash | # Need to concatenate a string to each line of ls command output in unix
I am a beginer in Shell script. Below is my requirement in UNIX Korn Shell.
### Example:
When we list files using `ls` command redirect to a file the file names will be stored as below.
```
$ ls FILE*>FLIST.TXT
$ cat FLIST.TXT
FILE1
FILE2
FILE... | You can't use `ls` alone to append data before each file. `ls` exists to list files.
You will need to use other tools along side `ls`.
You can append to the front of each line using the `sed` command:
```
cat FLIST.TXT | sed 's/^/STR,/'
```
This will send the changes to `stdout`.
---
If you'd like to change the ... |
29792850 | Get certificate expiry date from the embedded.mobileprovision provisioning profile | 8 | 2015-04-22 09:13:32 | <p>I need to get the expiry date of our iOS enterprise certificate used in an ipa's embedded.mobileprovision file using the command line.</p>
<p>I've got this so far:</p>
<pre><code>security cms -D -i Payload/*.app/embedded.mobileprovision > tmp.plist && /usr/libexec/PlistBuddy -c 'Print :DeveloperCertific... | 2,953 | 224,571 | 2015-04-28 06:01:29 | 29,840,111 | 13 | 2015-04-24 06:23:06 | 224,571 | 2015-04-24 06:54:33 | https://stackoverflow.com/q/29792850 | https://stackoverflow.com/a/29840111 | <p>I've successfully been able to get to the certificate information.</p>
<p>The problem was that my PlistBuddy command was wrong. I should have used 'DeveloperCertificates:0' instead of ':DeveloperCertificates'.</p>
<p>I also did not need the base64 stuff.</p>
<p>So the working commandline to get the info from the ... | <p>I've successfully been able to get to the certificate information.</p> <p>The problem was that my PlistBuddy command was wrong. I should have used 'DeveloperCertificates:0' instead of ':DeveloperCertificates'.</p> <p>I also did not need the base64 stuff.</p> <p>So the working commandline to get the info from the ... | 387, 58338, 66776 | bash, ios, provisioning-profile | <h1>Get certificate expiry date from the embedded.mobileprovision provisioning profile</h1>
<p>I need to get the expiry date of our iOS enterprise certificate used in an ipa's embedded.mobileprovision file using the command line.</p>
<p>I've got this so far:</p>
<pre><code>security cms -D -i Payload/*.app/embedded.mo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,406 | bash | # Get certificate expiry date from the embedded.mobileprovision provisioning profile
I need to get the expiry date of our iOS enterprise certificate used in an ipa's embedded.mobileprovision file using the command line.
I've got this so far:
```
security cms -D -i Payload/*.app/embedded.mobileprovision > tmp.plist &... | I've successfully been able to get to the certificate information.
The problem was that my PlistBuddy command was wrong. I should have used 'DeveloperCertificates:0' instead of ':DeveloperCertificates'.
I also did not need the base64 stuff.
So the working commandline to get the info from the enterprise certificate i... |
29724851 | Empty parameter is not Null in function | 8 | 2015-04-19 01:34:59 | <p>Given this basic function:</p>
<pre><code>Function TestFunction {
Param ( [int]$Par1, [string]$Par2, [string]$Par3 )
If ($Par1 -ne $Null) { Write-Output "Par1 = $Par1" }
If ($Par2 -ne $Null -or $Par2 -ne '') { Write-Output "Par2 = $Par2" }
If ($Par3 -ne $Null) { Write-Output "Par3 = $Par3" }
}
TestF... | 47,547 | 4,805,877 | 2018-04-11 11:17:12 | 29,724,864 | 13 | 2015-04-19 01:37:38 | null | 2015-04-19 02:12:14 | https://stackoverflow.com/q/29724851 | https://stackoverflow.com/a/29724864 |
<p>You have a logic error in your program: <code>$Par2</code> will <em>always</em> be not equal to <code>$null</code> <strong>or</strong> not equal to <code>''</code>.</p>
<p>To fix the logic, you should use <code>-and</code> instead of <code>-or</code> here:</p>
<pre class="lang-powershell prettyprint-override"><... | <p>You have a logic error in your program: <code>$Par2</code> will <em>always</em> be not equal to <code>$null</code> <strong>or</strong> not equal to <code>''</code>.</p> <p>To fix the logic, you should use <code>-and</code> instead of <code>-or</code> here:</p> <pre class="lang-powershell prettyprint-override"><... | 526, 2773, 5569 | function, if-statement, powershell | <h1>Empty parameter is not Null in function</h1>
<p>Given this basic function:</p>
<pre><code>Function TestFunction {
Param ( [int]$Par1, [string]$Par2, [string]$Par3 )
If ($Par1 -ne $Null) { Write-Output "Par1 = $Par1" }
If ($Par2 -ne $Null -or $Par2 -ne '') { Write-Output "Par2 = $Par2" }
If ($Par3 -... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,407 | bash | # Empty parameter is not Null in function
Given this basic function:
```
Function TestFunction {
Param ( [int]$Par1, [string]$Par2, [string]$Par3 )
If ($Par1 -ne $Null) { Write-Output "Par1 = $Par1" }
If ($Par2 -ne $Null -or $Par2 -ne '') { Write-Output "Par2 = $Par2" }
If ($Par3 -ne $Null) { Write-Ou... | You have a logic error in your program: `$Par2` will *always* be not equal to `$null` **or** not equal to `''`.
To fix the logic, you should use `-and` instead of `-or` here:
```
If ($Par2 -ne $Null -and $Par2 -ne '') { Write-Output "Par2 = $Par2" }
```
However, because you casted the `$Par2` argument to a string in... |
29608797 | How can I extract only an inode number for a file in Linux? | 8 | 2015-04-13 15:09:24 | <p>just a quick question. I want to use my inode number in my bash script however, I need some help.</p>
<p>I'm using command <code>ls -i "filename"</code>, which echoes "inode number" "filename". The problem is, I only need inode number. Is there a way, where i can "slice" the output?</p>
| 9,850 | 4,233,553 | 2025-11-07 00:57:09 | 29,608,905 | 13 | 2015-04-13 15:14:48 | 1,275,169 | 2015-04-13 15:18:05 | https://stackoverflow.com/q/29608797 | https://stackoverflow.com/a/29608905 | <p>You can use <code>stat</code> command with <code>%i</code> to get only inode nuymbers:</p>
<pre><code>stat -c '%i' *
</code></pre>
<p>Most of the utilities/commands use to get inode use <code>lstat</code> system call which is the one used by <code>stat</code> command too.</p>
| <p>You can use <code>stat</code> command with <code>%i</code> to get only inode nuymbers:</p> <pre><code>stat -c '%i' * </code></pre> <p>Most of the utilities/commands use to get inode use <code>lstat</code> system call which is the one used by <code>stat</code> command too.</p> | 58, 387 | bash, linux | <h1>How can I extract only an inode number for a file in Linux?</h1>
<p>just a quick question. I want to use my inode number in my bash script however, I need some help.</p>
<p>I'm using command <code>ls -i "filename"</code>, which echoes "inode number" "filename". The problem is, I only need inode number. Is there a ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,408 | bash | # How can I extract only an inode number for a file in Linux?
just a quick question. I want to use my inode number in my bash script however, I need some help.
I'm using command `ls -i "filename"`, which echoes "inode number" "filename". The problem is, I only need inode number. Is there a way, where i can "slice" th... | You can use `stat` command with `%i` to get only inode nuymbers:
```
stat -c '%i' *
```
Most of the utilities/commands use to get inode use `lstat` system call which is the one used by `stat` command too. |
28436651 | Replacing last occurrence of substring in string | 8 | 2015-02-10 16:25:42 | <p>How can you replace the <em>last</em> occurrence of a substring in a string?</p>
| 19,609 | 1,907,604 | 2021-06-07 13:21:24 | 28,437,855 | 13 | 2015-02-10 17:20:33 | 3,829,407 | 2016-09-20 20:21:23 | https://stackoverflow.com/q/28436651 | https://stackoverflow.com/a/28437855 | <p>Regular Expressions can also perform this task. Here is an example of one that would work. It will replace the last occurrence of "Aquarius" with "Bumblebee Joe"</p>
<pre><code>$text = "This is the dawning of the age of Aquarius. The age of Aquarius, Aquarius, Aquarius, Aquarius, Aquarius"
$text -replace "(.*)Aquar... | <p>Regular Expressions can also perform this task. Here is an example of one that would work. It will replace the last occurrence of "Aquarius" with "Bumblebee Joe"</p> <pre><code>$text = "This is the dawning of the age of Aquarius. The age of Aquarius, Aquarius, Aquarius, Aquarius, Aquarius" $text -replace "(.*)Aquar... | 526, 2498 | powershell, replace | <h1>Replacing last occurrence of substring in string</h1>
<p>How can you replace the <em>last</em> occurrence of a substring in a string?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,409 | bash | # Replacing last occurrence of substring in string
How can you replace the *last* occurrence of a substring in a string? | Regular Expressions can also perform this task. Here is an example of one that would work. It will replace the last occurrence of "Aquarius" with "Bumblebee Joe"
```
$text = "This is the dawning of the age of Aquarius. The age of Aquarius, Aquarius, Aquarius, Aquarius, Aquarius"
$text -replace "(.*)Aquarius(.*)", '$1B... |
27300416 | PowerShell shortest syntax to create a new PSObject using Property? | 8 | 2014-12-04 17:36:33 | <p>I use the following very often:</p>
<pre><code>New-Object psobject -Property @{a=1; b=2; c=3; d=4}
</code></pre>
<p>I would like to make this as short as possible, perhaps even 1 character?
What's the shortest way to create a new psobject using the properties above?</p>
<p>My desire is that I could do it with a s... | 3,237 | 1,131,254 | 2014-12-04 20:00:49 | 27,300,904 | 13 | 2014-12-04 18:04:05 | 3,067,642 | 2014-12-04 20:00:49 | https://stackoverflow.com/q/27300416 | https://stackoverflow.com/a/27300904 | <p>PowerShell 3 and later support this syntax:</p>
<pre><code>[pscustomobject]@{a=1; b=2; c=3; d=4}
</code></pre>
<p>One of the added benefits is that the properties are ordered, unlike a standard call to New-Object.</p>
<p>You add overhead, but presumably you could <a href="http://blogs.technet.com/b/heyscriptinggu... | <p>PowerShell 3 and later support this syntax:</p> <pre><code>[pscustomobject]@{a=1; b=2; c=3; d=4} </code></pre> <p>One of the added benefits is that the properties are ordered, unlike a standard call to New-Object.</p> <p>You add overhead, but presumably you could <a href="http://blogs.technet.com/b/heyscriptinggu... | 526, 4954 | code-golf, powershell | <h1>PowerShell shortest syntax to create a new PSObject using Property?</h1>
<p>I use the following very often:</p>
<pre><code>New-Object psobject -Property @{a=1; b=2; c=3; d=4}
</code></pre>
<p>I would like to make this as short as possible, perhaps even 1 character?
What's the shortest way to create a new psobject... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,410 | bash | # PowerShell shortest syntax to create a new PSObject using Property?
I use the following very often:
```
New-Object psobject -Property @{a=1; b=2; c=3; d=4}
```
I would like to make this as short as possible, perhaps even 1 character?
What's the shortest way to create a new psobject using the properties above?
My ... | PowerShell 3 and later support this syntax:
```
[pscustomobject]@{a=1; b=2; c=3; d=4}
```
One of the added benefits is that the properties are ordered, unlike a standard call to New-Object.
You add overhead, but presumably you could [create your own type accelerator](http://blogs.technet.com/b/heyscriptingguy/archiv... |
25274752 | gdb how to execute target program from script | 8 | 2014-08-12 21:58:22 | <p>I want to debug a program, using gdb. But I invoke that program through a script.</p>
<p>How can I use gdb?
The script is long and its not possible for me to invoke the program directly using command line arguments from gdb.</p>
<p>Also the process that is created when the script starts is short lived so can't att... | 5,391 | 1,874,105 | 2014-08-14 02:51:13 | 25,299,071 | 13 | 2014-08-14 02:20:58 | 1,442,050 | 2014-08-14 02:20:58 | https://stackoverflow.com/q/25274752 | https://stackoverflow.com/a/25299071 | <p>There are several ways.</p>
<p>The truly old-school way is to hack a loop into your program's <code>main</code> like:</p>
<pre><code>volatile int zzz;
...
int main() {
while (!zzz) sleep (1);
</code></pre>
<p>Then, run your script. In a separate window, run gdb on the program you want to debug, and use <code>a... | <p>There are several ways.</p> <p>The truly old-school way is to hack a loop into your program's <code>main</code> like:</p> <pre><code>volatile int zzz; ... int main() { while (!zzz) sleep (1); </code></pre> <p>Then, run your script. In a separate window, run gdb on the program you want to debug, and use <code>a... | 58, 277, 390, 1962 | debugging, gdb, linux, shell | <h1>gdb how to execute target program from script</h1>
<p>I want to debug a program, using gdb. But I invoke that program through a script.</p>
<p>How can I use gdb?
The script is long and its not possible for me to invoke the program directly using command line arguments from gdb.</p>
<p>Also the process that is cre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,411 | bash | # gdb how to execute target program from script
I want to debug a program, using gdb. But I invoke that program through a script.
How can I use gdb?
The script is long and its not possible for me to invoke the program directly using command line arguments from gdb.
Also the process that is created when the script st... | There are several ways.
The truly old-school way is to hack a loop into your program's `main` like:
```
volatile int zzz;
...
int main() {
while (!zzz) sleep (1);
```
Then, run your script. In a separate window, run gdb on the program you want to debug, and use `attach` to attach to the sleeping program. Then you ... |
24236362 | Bash alias create file with current timestamp in filename | 8 | 2014-06-16 03:40:26 | <p>I am trying to create a bash alias that will print the current UNIX timestamp every time the alias is called. I have the following in my bash profile:</p>
<pre><code>alias unix="echo "$(date +%s)""
</code></pre>
<p>However, it seems that the current unix timestamp is being stored as soon as the bash profile is so... | 6,190 | 736,864 | 2016-04-12 04:49:21 | 24,236,390 | 13 | 2014-06-16 03:44:48 | 3,531,387 | 2015-01-06 16:04:28 | https://stackoverflow.com/q/24236362 | https://stackoverflow.com/a/24236390 | <p>Use single quotes to prevent immediate expansion.</p>
<pre><code>alias unix='echo $(date +%s)'
</code></pre>
<p>Update: While I'm happy to have been able to explain the different expansion behavior between single and double quotes, please also see the other answer, by Robby Cornelissen, for a more efficient way to... | <p>Use single quotes to prevent immediate expansion.</p> <pre><code>alias unix='echo $(date +%s)' </code></pre> <p>Update: While I'm happy to have been able to explain the different expansion behavior between single and double quotes, please also see the other answer, by Robby Cornelissen, for a more efficient way to... | 34, 58, 387, 390 | bash, linux, shell, unix | <h1>Bash alias create file with current timestamp in filename</h1>
<p>I am trying to create a bash alias that will print the current UNIX timestamp every time the alias is called. I have the following in my bash profile:</p>
<pre><code>alias unix="echo "$(date +%s)""
</code></pre>
<p>However, it seems that the curre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,412 | bash | # Bash alias create file with current timestamp in filename
I am trying to create a bash alias that will print the current UNIX timestamp every time the alias is called. I have the following in my bash profile:
```
alias unix="echo "$(date +%s)""
```
However, it seems that the current unix timestamp is being stored ... | Use single quotes to prevent immediate expansion.
```
alias unix='echo $(date +%s)'
```
Update: While I'm happy to have been able to explain the different expansion behavior between single and double quotes, please also see the other answer, by Robby Cornelissen, for a more efficient way to get the same result. The `... |
22199868 | Loop through variable 2 elements at a time in bash | 8 | 2014-03-05 13:58:28 | <p>I have a bash variable which is a white-space separated list of strings and would like a loop that iterates 2 elements at a time from that list. I've made sure the length of the list is divisible by 2. So I want something like:</p>
<pre><code>x="a bb cccc d"
while read first second; do
echo "($first,$second)"
d... | 5,550 | null | 2014-08-19 16:56:34 | 22,201,477 | 13 | 2014-03-05 15:04:51 | 1,566,221 | 2014-03-05 15:32:56 | https://stackoverflow.com/q/22199868 | https://stackoverflow.com/a/22201477 | <p>Depending on what you want to do with the values, you could do something like this:</p>
<pre><code>$ x="one two buckle myShoe"
$ xargs -n 2 printf "(%s,%s)\n" <<<$x
(one,two)
(buckle,myShoe)
</code></pre>
<p>I assume that you really want to assign the values to shell variables, though, and that the body o... | <p>Depending on what you want to do with the values, you could do something like this:</p> <pre><code>$ x="one two buckle myShoe" $ xargs -n 2 printf "(%s,%s)\n" <<<$x (one,two) (buckle,myShoe) </code></pre> <p>I assume that you really want to assign the values to shell variables, though, and that the body o... | 387, 2314 | bash, loops | <h1>Loop through variable 2 elements at a time in bash</h1>
<p>I have a bash variable which is a white-space separated list of strings and would like a loop that iterates 2 elements at a time from that list. I've made sure the length of the list is divisible by 2. So I want something like:</p>
<pre><code>x="a bb cccc ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,413 | bash | # Loop through variable 2 elements at a time in bash
I have a bash variable which is a white-space separated list of strings and would like a loop that iterates 2 elements at a time from that list. I've made sure the length of the list is divisible by 2. So I want something like:
```
x="a bb cccc d"
while read first ... | Depending on what you want to do with the values, you could do something like this:
```
$ x="one two buckle myShoe"
$ xargs -n 2 printf "(%s,%s)\n" <<<$x
(one,two)
(buckle,myShoe)
```
I assume that you really want to assign the values to shell variables, though, and that the body of your anticipated loop is more comp... |
21107098 | How do I get the opposite of the if construct in Bash? | 8 | 2014-01-14 06:10:46 | <p><code>if date -d "2012010123"</code> runs if the date command returns a zero exit code. How do I get the opposite to occur? In other words, how can I get the if statement to run if the exit code is 1? </p>
| 10,124 | 1,119,779 | 2021-09-16 21:44:34 | 21,107,121 | 13 | 2014-01-14 06:13:07 | 2,235,132 | 2021-09-16 21:44:34 | https://stackoverflow.com/q/21107098 | https://stackoverflow.com/a/21107121 | <p>Negate it:</p>
<pre><code>if ! date -d "2012010123"; then
# do something here (date returned with non-zero exit code)
fi
</code></pre>
<p><code>if</code> takes a command pipeline (or a list thereof), and of pipelines <code>man bash</code> says this:</p>
<blockquote>
<p>The return status of a pipeline i... | <p>Negate it:</p> <pre><code>if ! date -d "2012010123"; then # do something here (date returned with non-zero exit code) fi </code></pre> <p><code>if</code> takes a command pipeline (or a list thereof), and of pipelines <code>man bash</code> says this:</p> <blockquote> <p>The return status of a pipeline i... | 387 | bash | <h1>How do I get the opposite of the if construct in Bash?</h1>
<p><code>if date -d "2012010123"</code> runs if the date command returns a zero exit code. How do I get the opposite to occur? In other words, how can I get the if statement to run if the exit code is 1? </p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,414 | bash | # How do I get the opposite of the if construct in Bash?
`if date -d "2012010123"` runs if the date command returns a zero exit code. How do I get the opposite to occur? In other words, how can I get the if statement to run if the exit code is 1? | Negate it:
```
if ! date -d "2012010123"; then
# do something here (date returned with non-zero exit code)
fi
```
`if` takes a command pipeline (or a list thereof), and of pipelines `man bash` says this:
> The return status of a pipeline is the exit status of the last command[...] If the reserved word `!` precedes... |
21052812 | Difference between dates using PowerShell | 8 | 2014-01-10 19:29:18 | <p>I am learning Windows PowerShell, and I am trying to get the months difference given two dates:</p>
<pre><code>For example: end: 2014-06-01
now: 2014-01-10
answer: 6 months
$now = get-date
$date = $end -as [DateTime];
if (!$date)
{
'You entered an invalid date'
}
else
{
$nts = (... | 56,720 | 255,391 | 2022-02-01 09:50:30 | 21,053,007 | 13 | 2014-01-10 19:40:03 | 574,168 | 2014-01-10 19:40:03 | https://stackoverflow.com/q/21052812 | https://stackoverflow.com/a/21053007 | <p>Something like this?</p>
<pre><code>$begin = [datetime]'02/10/2011'
$end = [datetime]'01/10/2013'
$monthdiff = $end.month - $begin.month + (($end.Year - $begin.year) * 12)
$monthdiff
23
</code></pre>
| <p>Something like this?</p> <pre><code>$begin = [datetime]'02/10/2011' $end = [datetime]'01/10/2013' $monthdiff = $end.month - $begin.month + (($end.Year - $begin.year) * 12) $monthdiff 23 </code></pre> | 526 | powershell | <h1>Difference between dates using PowerShell</h1>
<p>I am learning Windows PowerShell, and I am trying to get the months difference given two dates:</p>
<pre><code>For example: end: 2014-06-01
now: 2014-01-10
answer: 6 months
$now = get-date
$date = $end -as [DateTime];
if (!$date)
{
'You entered a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,415 | bash | # Difference between dates using PowerShell
I am learning Windows PowerShell, and I am trying to get the months difference given two dates:
```
For example: end: 2014-06-01
now: 2014-01-10
answer: 6 months
$now = get-date
$date = $end -as [DateTime];
if (!$date)
{
'You entered an invalid date'
... | Something like this?
```
$begin = [datetime]'02/10/2011'
$end = [datetime]'01/10/2013'
$monthdiff = $end.month - $begin.month + (($end.Year - $begin.year) * 12)
$monthdiff
23
``` |
16579013 | Perl - DBI and .pgpass | 8 | 2013-05-16 04:28:27 | <p>I can successfully create a connection to a Postgres db using the following: </p>
<pre><code>my $settings = {
host => 'myhost',
db => 'mydb',
user => 'myuser',
passwd => 'mypasswd'
};
my $connection = DBI->connect(
'DBI:Pg:dbname=' . $settings->{'db'} . ';host=' . $settings-&g... | 2,596 | 751,863 | 2013-11-14 14:29:40 | 19,980,156 | 13 | 2013-11-14 14:24:34 | 2,863,726 | 2013-11-14 14:29:40 | https://stackoverflow.com/q/16579013 | https://stackoverflow.com/a/19980156 | <p>YES! There <strong>IS</strong> a better way.</p>
<p>Change between test & live servers easily.</p>
<ul>
<li>keep passwords in <code>~/.pgpass</code> (for <code>psql</code> & <code>pg_dump</code>)</li>
<li>other config info in <code>~/.pg_service.conf</code> (or <code>/etc/pg_service.conf</code>)</li>
</ul>... | <p>YES! There <strong>IS</strong> a better way.</p> <p>Change between test & live servers easily.</p> <ul> <li>keep passwords in <code>~/.pgpass</code> (for <code>psql</code> & <code>pg_dump</code>)</li> <li>other config info in <code>~/.pg_service.conf</code> (or <code>/etc/pg_service.conf</code>)</li> </ul>... | 34, 256, 387, 580, 12262 | bash, dbi, perl, postgresql, unix | <h1>Perl - DBI and .pgpass</h1>
<p>I can successfully create a connection to a Postgres db using the following: </p>
<pre><code>my $settings = {
host => 'myhost',
db => 'mydb',
user => 'myuser',
passwd => 'mypasswd'
};
my $connection = DBI->connect(
'DBI:Pg:dbname=' . $settings->... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,416 | bash | # Perl - DBI and .pgpass
I can successfully create a connection to a Postgres db using the following:
```
my $settings = {
host => 'myhost',
db => 'mydb',
user => 'myuser',
passwd => 'mypasswd'
};
my $connection = DBI->connect(
'DBI:Pg:dbname=' . $settings->{'db'} . ';host=' . $settings->{'host'}... | YES! There **IS** a better way.
Change between test & live servers easily.
- keep passwords in `~/.pgpass` (for `psql` & `pg_dump`)
- other config info in `~/.pg_service.conf` (or `/etc/pg_service.conf`)
e.g:
```
#!/usr/bin/perl -T
use strict;
use warnings;
use DBI;
my $dbh = DBI->connect
(
#"dbi:Pg:service=li... |
19573844 | PowerShell Script Arguments Passed as Array | 8 | 2013-10-24 18:33:12 | <p><strong>EDIT:</strong> I've changed the code here to a simple test case, rather than the full implementation where this problem is arising.</p>
<p>I am trying to call one Powershell script from another, but things aren't working out as I'm expecting. As I understand things, the "&" operator is supposed to expan... | 9,121 | 707,095 | 2013-11-03 23:57:59 | 19,759,742 | 13 | 2013-11-03 23:57:59 | 2,495 | 2013-11-03 23:57:59 | https://stackoverflow.com/q/19573844 | https://stackoverflow.com/a/19759742 | <p>When invoking a native command, a call like <code>& $program $programargs</code> will correctly escape the array of arguments so that it is parsed correctly by the executable. However, for a PowerShell cmdlet, script, or function, there is no external programming requiring a serialize/parse round-trip, so the ar... | <p>When invoking a native command, a call like <code>& $program $programargs</code> will correctly escape the array of arguments so that it is parsed correctly by the executable. However, for a PowerShell cmdlet, script, or function, there is no external programming requiring a serialize/parse round-trip, so the ar... | 526 | powershell | <h1>PowerShell Script Arguments Passed as Array</h1>
<p><strong>EDIT:</strong> I've changed the code here to a simple test case, rather than the full implementation where this problem is arising.</p>
<p>I am trying to call one Powershell script from another, but things aren't working out as I'm expecting. As I underst... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,417 | bash | # PowerShell Script Arguments Passed as Array
**EDIT:** I've changed the code here to a simple test case, rather than the full implementation where this problem is arising.
I am trying to call one Powershell script from another, but things aren't working out as I'm expecting. As I understand things, the "&" operator ... | When invoking a native command, a call like `& $program $programargs` will correctly escape the array of arguments so that it is parsed correctly by the executable. However, for a PowerShell cmdlet, script, or function, there is no external programming requiring a serialize/parse round-trip, so the array is passed as-i... |
19025763 | linux script running c program | 8 | 2013-09-26 10:30:35 | <p>i tried to run a script in linux to run a c program
the script was as follows</p>
<pre><code>#!/bin/bash
`gcc odd.c -o odd222`
`chmod +x odd222`
echo `./odd222`
</code></pre>
<p>and odd.c is</p>
<pre><code>main()
{
int i;
printf("enter the no.");
scanf("%d",&i);
printf("shiv");
}
</code></pre>
<p>but the pro... | 44,335 | 2,809,547 | 2018-07-13 03:19:05 | 19,026,219 | 13 | 2013-09-26 10:52:20 | 68,587 | 2013-09-26 10:58:26 | https://stackoverflow.com/q/19025763 | https://stackoverflow.com/a/19026219 | <p>Get rid of the backticks, the chmod, and the <code>echo</code>. All you need to do is run <code>gcc</code>, then run your program.</p>
<pre><code>#!/bin/bash
gcc odd.c -o odd222
./odd222
</code></pre>
<p>It'd also be good to only try to run the program if it compiles successfully. You can make it conditional by us... | <p>Get rid of the backticks, the chmod, and the <code>echo</code>. All you need to do is run <code>gcc</code>, then run your program.</p> <pre><code>#!/bin/bash gcc odd.c -o odd222 ./odd222 </code></pre> <p>It'd also be good to only try to run the program if it compiles successfully. You can make it conditional by us... | 8, 58, 387 | bash, c, linux | <h1>linux script running c program</h1>
<p>i tried to run a script in linux to run a c program
the script was as follows</p>
<pre><code>#!/bin/bash
`gcc odd.c -o odd222`
`chmod +x odd222`
echo `./odd222`
</code></pre>
<p>and odd.c is</p>
<pre><code>main()
{
int i;
printf("enter the no.");
scanf("%d",&i);
printf(... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,418 | bash | # linux script running c program
i tried to run a script in linux to run a c program
the script was as follows
```
#!/bin/bash
`gcc odd.c -o odd222`
`chmod +x odd222`
echo `./odd222`
```
and odd.c is
```
main()
{
int i;
printf("enter the no.");
scanf("%d",&i);
printf("shiv");
}
```
but the problem is that when i r... | Get rid of the backticks, the chmod, and the `echo`. All you need to do is run `gcc`, then run your program.
```
#!/bin/bash
gcc odd.c -o odd222
./odd222
```
It'd also be good to only try to run the program if it compiles successfully. You can make it conditional by using `&&`.
```
#!/bin/bash
gcc odd.c -o odd222 &&... |
18858221 | How do I change directory and run a file in that directory in powershell? | 8 | 2013-09-17 19:24:30 | <p>For example, i want to run cygwin.bat which is located in the c:/cygwin/ directory...</p>
<p>I tried the following but got an error: </p>
<blockquote>
<p>cd c:/cygwin ./cygwin.bat </p>
</blockquote>
| 17,476 | 2,788,932 | 2013-10-18 16:46:21 | 18,858,647 | 13 | 2013-09-17 19:48:10 | 775,544 | 2013-09-17 19:48:10 | https://stackoverflow.com/q/18858221 | https://stackoverflow.com/a/18858647 | <p><code>cd c:/cygwin</code> and <code>./cygwin.bat</code> are two different statements. You can execute them from the interactive console like so: </p>
<pre><code>PS C:\> cd c:/cygwin
PS C:\cygwin> ./cygwin.bat
</code></pre>
<p>Or, if you really want to do it on the same line, then use a <code>;</code>... | <p><code>cd c:/cygwin</code> and <code>./cygwin.bat</code> are two different statements. You can execute them from the interactive console like so: </p> <pre><code>PS C:\> cd c:/cygwin PS C:\cygwin> ./cygwin.bat </code></pre> <p>Or, if you really want to do it on the same line, then use a <code>;</code>... | 526, 1796, 24067 | command, powershell, powershell-2.0 | <h1>How do I change directory and run a file in that directory in powershell?</h1>
<p>For example, i want to run cygwin.bat which is located in the c:/cygwin/ directory...</p>
<p>I tried the following but got an error: </p>
<blockquote>
<p>cd c:/cygwin ./cygwin.bat </p>
</blockquote>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,419 | bash | # How do I change directory and run a file in that directory in powershell?
For example, i want to run cygwin.bat which is located in the c:/cygwin/ directory...
I tried the following but got an error:
> cd c:/cygwin ./cygwin.bat | `cd c:/cygwin` and `./cygwin.bat` are two different statements. You can execute them from the interactive console like so:
```
PS C:\> cd c:/cygwin
PS C:\cygwin> ./cygwin.bat
```
Or, if you really want to do it on the same line, then use a `;` between them to indicate separate statements.
```
cd c:/cygwin ; .... |
18204670 | Connect to a VPN Connection in Ubuntu in bash | 8 | 2013-08-13 08:53:44 | <p>How can I connect to a <code>VPN Connection</code> when I can use only bash (terminal)?</p>
<p>I create a connection but I want to connect or disconnect using remote ssh connection </p>
| 13,587 | 1,385,652 | 2018-01-02 06:57:55 | 18,204,671 | 13 | 2013-08-13 08:53:44 | 1,385,652 | 2013-08-13 08:53:44 | https://stackoverflow.com/q/18204670 | https://stackoverflow.com/a/18204671 | <p>you can use <code>nmcli</code> to do that. this program is use for network management.</p>
<pre><code>nmcli con up id <name_of_connection>
</code></pre>
<p>you need to save the password of that connection before you use this command. For more information, try <code>man nmcli</code></p>
<p>any help on how to... | <p>you can use <code>nmcli</code> to do that. this program is use for network management.</p> <pre><code>nmcli con up id <name_of_connection> </code></pre> <p>you need to save the password of that connection before you use this command. For more information, try <code>man nmcli</code></p> <p>any help on how to... | 58, 387, 633 | bash, linux, vpn | <h1>Connect to a VPN Connection in Ubuntu in bash</h1>
<p>How can I connect to a <code>VPN Connection</code> when I can use only bash (terminal)?</p>
<p>I create a connection but I want to connect or disconnect using remote ssh connection </p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,420 | bash | # Connect to a VPN Connection in Ubuntu in bash
How can I connect to a `VPN Connection` when I can use only bash (terminal)?
I create a connection but I want to connect or disconnect using remote ssh connection | you can use `nmcli` to do that. this program is use for network management.
```
nmcli con up id <name_of_connection>
```
you need to save the password of that connection before you use this command. For more information, try `man nmcli`
any help on how to create VPN_CONNECTION in bash and how to manage them will app... |
16229582 | Continue execution on Exception | 8 | 2013-04-26 05:51:21 | <p>Below is the script I want to execute. The issue here is once an exception occurs it stops executing, I used <code>continue</code> in the catch block but that did not work. How do I get it working even after an exception occurs it should loop in <code>foreach</code>.</p>
<p>I also used a <code>while($true)</code> l... | 85,106 | 243,680 | 2019-08-16 20:48:01 | 16,231,327 | 13 | 2013-04-26 07:51:07 | 1,630,171 | 2013-04-26 07:51:07 | https://stackoverflow.com/q/16229582 | https://stackoverflow.com/a/16231327 | <p>You use <code>try {...} catch {...}</code> when you want to handle errors. If you want to ignore them, you should set <code>$ErrorActionPreference = "Continue"</code> (or <code>"SilentlyContinue"</code>) as @C.B. suggested, or use <code>-ErrorAction "SilentlyContinue"</code> for the particular operation raising the ... | <p>You use <code>try {...} catch {...}</code> when you want to handle errors. If you want to ignore them, you should set <code>$ErrorActionPreference = "Continue"</code> (or <code>"SilentlyContinue"</code>) as @C.B. suggested, or use <code>-ErrorAction "SilentlyContinue"</code> for the particular operation raising the ... | 379, 526, 4650 | continue, error-handling, powershell | <h1>Continue execution on Exception</h1>
<p>Below is the script I want to execute. The issue here is once an exception occurs it stops executing, I used <code>continue</code> in the catch block but that did not work. How do I get it working even after an exception occurs it should loop in <code>foreach</code>.</p>
<p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,421 | bash | # Continue execution on Exception
Below is the script I want to execute. The issue here is once an exception occurs it stops executing, I used `continue` in the catch block but that did not work. How do I get it working even after an exception occurs it should loop in `foreach`.
I also used a `while($true)` loop but ... | You use `try {...} catch {...}` when you want to handle errors. If you want to ignore them, you should set `$ErrorActionPreference = "Continue"` (or `"SilentlyContinue"`) as @C.B. suggested, or use `-ErrorAction "SilentlyContinue"` for the particular operation raising the error. If you want to handle errors from a cert... |
14878684 | How to send a sequence of AT commands to a serial port in bash? | 8 | 2013-02-14 15:50:09 | <p>In Linux I need to send a sequence of AT commands to a serial port on e.g. <code>/dev/ttyS0</code>, which has to wait for an <code>OK</code> answer before the next command is sent. I could imagine doing something like</p>
<pre><code>echo 'AT' > /dev/ttyS0
echo 'ATS0=0' > dev/ttyS0
...
</code></pre>
<p>but th... | 35,268 | 1,581,090 | 2021-01-14 10:52:27 | 14,878,820 | 13 | 2013-02-14 15:57:44 | 521,034 | 2013-02-14 16:06:26 | https://stackoverflow.com/q/14878684 | https://stackoverflow.com/a/14878820 | <p>If you install the PPP package you can use the <code>chat</code> program that comes with it. Or you can use <code>kermit</code>. Or the <code>cu</code> program that comes with uucp. But to do it with pure shell is trickier. You might be able to use the read and printf functions, with stdio redirected to the port. <... | <p>If you install the PPP package you can use the <code>chat</code> program that comes with it. Or you can use <code>kermit</code>. Or the <code>cu</code> program that comes with uucp. But to do it with pure shell is trickier. You might be able to use the read and printf functions, with stdio redirected to the port. <... | 58, 387, 3716, 30895 | at-command, bash, linux, serial-port | <h1>How to send a sequence of AT commands to a serial port in bash?</h1>
<p>In Linux I need to send a sequence of AT commands to a serial port on e.g. <code>/dev/ttyS0</code>, which has to wait for an <code>OK</code> answer before the next command is sent. I could imagine doing something like</p>
<pre><code>echo 'AT' ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,422 | bash | # How to send a sequence of AT commands to a serial port in bash?
In Linux I need to send a sequence of AT commands to a serial port on e.g. `/dev/ttyS0`, which has to wait for an `OK` answer before the next command is sent. I could imagine doing something like
```
echo 'AT' > /dev/ttyS0
echo 'ATS0=0' > dev/ttyS0
...... | If you install the PPP package you can use the `chat` program that comes with it. Or you can use `kermit`. Or the `cu` program that comes with uucp. But to do it with pure shell is trickier. You might be able to use the read and printf functions, with stdio redirected to the port.
some snippet:
```
stty -F /dev/ttyS0... |
14601430 | How to run a c program in bash script and give it 2 arguments? | 8 | 2013-01-30 10:13:23 | <p>I have a program in C, which takes 2 arguments, filename and text. I want to write a script in bash, which also take 2 arguments, path and file extension, will iterate through all files in given path and give to my program in C as argument files with the givenextension only and text.</p>
<p>Heres my program in C, n... | 45,061 | 1,612,090 | 2013-01-30 10:15:57 | 14,601,483 | 13 | 2013-01-30 10:15:51 | 440,558 | 2013-01-30 10:15:51 | https://stackoverflow.com/q/14601430 | https://stackoverflow.com/a/14601483 | <p>Right now you're not actually passing any arguments to the program in your script.</p>
<p>Just pass the arguments normally:</p>
<pre><code>./app "$file" "$text"
</code></pre>
<p>I put the arguments in double-quotes to make the shell see the variables as single arguments, in case they contain spaces.</p>
| <p>Right now you're not actually passing any arguments to the program in your script.</p> <p>Just pass the arguments normally:</p> <pre><code>./app "$file" "$text" </code></pre> <p>I put the arguments in double-quotes to make the shell see the variables as single arguments, in case they contain spaces.</p> | 8, 387, 390 | bash, c, shell | <h1>How to run a c program in bash script and give it 2 arguments?</h1>
<p>I have a program in C, which takes 2 arguments, filename and text. I want to write a script in bash, which also take 2 arguments, path and file extension, will iterate through all files in given path and give to my program in C as argument files... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,423 | bash | # How to run a c program in bash script and give it 2 arguments?
I have a program in C, which takes 2 arguments, filename and text. I want to write a script in bash, which also take 2 arguments, path and file extension, will iterate through all files in given path and give to my program in C as argument files with the... | Right now you're not actually passing any arguments to the program in your script.
Just pass the arguments normally:
```
./app "$file" "$text"
```
I put the arguments in double-quotes to make the shell see the variables as single arguments, in case they contain spaces. |
14081799 | CLI shell script code generation from compiled executable? | 8 | 2012-12-29 12:43:01 | <h1>Question, topic of discussion</h1>
<p>I am very interested in generation of command line shell scripting source code from code written in a more robustness-promoting, well-performant and platform-independent compiled language (OCaml, for instance). Basically, you would program in a compiled language to perform any... | 973 | 1,175,508 | 2016-03-24 11:38:02 | 14,084,654 | 13 | 2012-12-29 18:26:05 | 1,026,598 | 2012-12-29 18:55:40 | https://stackoverflow.com/q/14081799 | https://stackoverflow.com/a/14084654 |
<p>There are no Haskell libraries for this, but you can implement this using abstract syntax trees. I'll build up a simple toy example that builds an abstract language-independent syntax tree and then applies a back-end that converts the tree into the equivalent Bash script.</p>
<p>I will use two tricks for modelli... | <p>There are no Haskell libraries for this, but you can implement this using abstract syntax trees. I'll build up a simple toy example that builds an abstract language-independent syntax tree and then applies a back-end that converts the tree into the equivalent Bash script.</p> <p>I will use two tricks for modelli... | 390, 991, 1808, 1925, 12664 | haskell, ocaml, robustness, scheme, shell | <h1>CLI shell script code generation from compiled executable?</h1>
<h1>Question, topic of discussion</h1>
<p>I am very interested in generation of command line shell scripting source code from code written in a more robustness-promoting, well-performant and platform-independent compiled language (OCaml, for instance)... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,424 | bash | # CLI shell script code generation from compiled executable?
# Question, topic of discussion
I am very interested in generation of command line shell scripting source code from code written in a more robustness-promoting, well-performant and platform-independent compiled language (OCaml, for instance). Basically, you... | There are no Haskell libraries for this, but you can implement this using abstract syntax trees. I'll build up a simple toy example that builds an abstract language-independent syntax tree and then applies a back-end that converts the tree into the equivalent Bash script.
I will use two tricks for modelling syntax tre... |
12905180 | How to Get SharePoint PowerShell to use .NET 2 | 8 | 2012-10-15 22:57:46 | <p>I'm having a couple of problems with PowerShell. First, the PS configuration installed by SharePoint 2010 keeps popping this message: </p>
<p>The local farm is not accessible. Cmdlets with FeatureDependencyId are not registered.</p>
<p>I've googled that, and given everybody and their second cousin Sharepoint_Shell... | 7,536 | 16,851 | 2016-10-25 14:33:33 | 12,906,632 | 13 | 2012-10-16 02:17:47 | 6,920 | 2012-10-16 02:48:31 | https://stackoverflow.com/q/12905180 | https://stackoverflow.com/a/12906632 | <p>When you install powershell v3, version 2 is still available in side by side mode. In order to use the SharePoint snapin, you must launch v2 like this:</p>
<pre><code>powershell -v 2
</code></pre>
<p>Then you can load the snapin for SharePoint. </p>
<p>For reference, here is the output from invoking PowerShell v2... | <p>When you install powershell v3, version 2 is still available in side by side mode. In order to use the SharePoint snapin, you must launch v2 like this:</p> <pre><code>powershell -v 2 </code></pre> <p>Then you can load the snapin for SharePoint. </p> <p>For reference, here is the output from invoking PowerShell v2... | 526, 669, 3574 | config, powershell, sharepoint | <h1>How to Get SharePoint PowerShell to use .NET 2</h1>
<p>I'm having a couple of problems with PowerShell. First, the PS configuration installed by SharePoint 2010 keeps popping this message: </p>
<p>The local farm is not accessible. Cmdlets with FeatureDependencyId are not registered.</p>
<p>I've googled that, and ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,425 | bash | # How to Get SharePoint PowerShell to use .NET 2
I'm having a couple of problems with PowerShell. First, the PS configuration installed by SharePoint 2010 keeps popping this message:
The local farm is not accessible. Cmdlets with FeatureDependencyId are not registered.
I've googled that, and given everybody and thei... | When you install powershell v3, version 2 is still available in side by side mode. In order to use the SharePoint snapin, you must launch v2 like this:
```
powershell -v 2
```
Then you can load the snapin for SharePoint.
For reference, here is the output from invoking PowerShell v2 from Windows 8 cmd.exe:
```
C:\Wi... |
10987468 | cursor blinking removal in terminal, how to? | 8 | 2012-06-11 21:00:59 | <p>I use the following lines to output my simulation's progress info in my c++ program,</p>
<pre><code>double N=0;
double percent=0;
double total = 1000000;
for (int i; i<total; ++i)
{
percent = 100*i/total;
printf("\r[%6.4f%%]",percent);
}
</code></pre>
<p>It works fine!</p>
<p>But the problem is I see t... | 17,505 | 650,718 | 2021-12-28 19:50:26 | 10,988,079 | 13 | 2012-06-11 21:55:29 | 600,135 | 2012-06-11 22:25:17 | https://stackoverflow.com/q/10987468 | https://stackoverflow.com/a/10988079 | <p>Just a guess: try to use a proper number of '\b' (backspace) characters instead of '\r'. </p>
<p>== EDIT ==</p>
<p>I'm not a Linux shell wizard, but this may work:</p>
<pre><code>system("setterm -cursor off");
// ...display percentages...
system("setterm -cursor on");
</code></pre>
<p>Don't forget to <code>#incl... | <p>Just a guess: try to use a proper number of '\b' (backspace) characters instead of '\r'. </p> <p>== EDIT ==</p> <p>I'm not a Linux shell wizard, but this may work:</p> <pre><code>system("setterm -cursor off"); // ...display percentages... system("setterm -cursor on"); </code></pre> <p>Don't forget to <code>#incl... | 10, 390, 391, 143847 | c++, shell, terminal, text-cursor | <h1>cursor blinking removal in terminal, how to?</h1>
<p>I use the following lines to output my simulation's progress info in my c++ program,</p>
<pre><code>double N=0;
double percent=0;
double total = 1000000;
for (int i; i<total; ++i)
{
percent = 100*i/total;
printf("\r[%6.4f%%]",percent);
}
</code></pre>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,426 | bash | # cursor blinking removal in terminal, how to?
I use the following lines to output my simulation's progress info in my c++ program,
```
double N=0;
double percent=0;
double total = 1000000;
for (int i; i<total; ++i)
{
percent = 100*i/total;
printf("\r[%6.4f%%]",percent);
}
```
It works fine!
But the problem... | Just a guess: try to use a proper number of '\b' (backspace) characters instead of '\r'.
== EDIT ==
I'm not a Linux shell wizard, but this may work:
```
system("setterm -cursor off");
// ...display percentages...
system("setterm -cursor on");
```
Don't forget to `#include <cstdlib>` or `<iostream>`. |
10472670 | shell_exec not running in background? | 8 | 2012-05-06 17:31:45 | <p>I have the following which executes perfectly but NOT in the background as it should? It actually stops the page loading until it finishes which is not good.</p>
<pre><code>shell_exec("/usr/bin/php /home/public_html/pages/test/backg.php {$user_info} {$user_info2} {$user_info3} &");
</code></pre>
<p>I also trie... | 9,995 | 973,552 | 2020-05-12 08:25:53 | 10,473,110 | 13 | 2012-05-06 18:34:01 | 1,344,637 | 2020-05-12 08:25:53 | https://stackoverflow.com/q/10472670 | https://stackoverflow.com/a/10473110 | <pre><code>exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));
</code></pre>
<p><a href="https://stackoverflow.com/questions/45953/php-execute-a-background-process">php execute a background process</a></p>
<pre><code>exec("/usr/bin/php /path/background.php > /dev/null 2&... | <pre><code>exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile)); </code></pre> <p><a href="https://stackoverflow.com/questions/45953/php-execute-a-background-process">php execute a background process</a></p> <pre><code>exec("/usr/bin/php /path/background.php > /dev/null 2&... | 5, 7932, 8646, 15292 | background-process, exec, php, shell-exec | <h1>shell_exec not running in background?</h1>
<p>I have the following which executes perfectly but NOT in the background as it should? It actually stops the page loading until it finishes which is not good.</p>
<pre><code>shell_exec("/usr/bin/php /home/public_html/pages/test/backg.php {$user_info} {$user_info2} {$use... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,427 | bash | # shell_exec not running in background?
I have the following which executes perfectly but NOT in the background as it should? It actually stops the page loading until it finishes which is not good.
```
shell_exec("/usr/bin/php /home/public_html/pages/test/backg.php {$user_info} {$user_info2} {$user_info3} &");
```
I... | ```
exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));
```
[php execute a background process](https://stackoverflow.com/questions/45953/php-execute-a-background-process)
```
exec("/usr/bin/php /path/background.php > /dev/null 2>&1 &");
``` |
9813141 | How to list all binary file extensions within a directory tree? | 8 | 2012-03-21 21:27:31 | <p>I need to build a list of all the file extensions of binary files located within a directory tree. </p>
<p>The main question would need to be how to distinguish a text file from a binary one, and the rest should be cake.</p>
<p><strong>EDIT</strong>: This is the closest I got, any better ideas?</p>
<pre><code>fin... | 11,051 | 156,257 | 2015-06-01 22:26:05 | 9,818,717 | 13 | 2012-03-22 08:32:13 | 1,271,502 | 2012-03-22 08:32:13 | https://stackoverflow.com/q/9813141 | https://stackoverflow.com/a/9818717 | <p>Here's a trick to find the binary files:</p>
<pre><code>grep -r -m 1 "^" <Your Root> | grep "^Binary file"
</code></pre>
<p>The -m 1 makes grep not read all the file.</p>
| <p>Here's a trick to find the binary files:</p> <pre><code>grep -r -m 1 "^" <Your Root> | grep "^Binary file" </code></pre> <p>The -m 1 makes grep not read all the file.</p> | 58, 99, 387 | bash, filesystems, linux | <h1>How to list all binary file extensions within a directory tree?</h1>
<p>I need to build a list of all the file extensions of binary files located within a directory tree. </p>
<p>The main question would need to be how to distinguish a text file from a binary one, and the rest should be cake.</p>
<p><strong>EDIT</... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,428 | bash | # How to list all binary file extensions within a directory tree?
I need to build a list of all the file extensions of binary files located within a directory tree.
The main question would need to be how to distinguish a text file from a binary one, and the rest should be cake.
**EDIT**: This is the closest I got, a... | Here's a trick to find the binary files:
```
grep -r -m 1 "^" <Your Root> | grep "^Binary file"
```
The -m 1 makes grep not read all the file. |
8805647 | How to update node.js and CoffeeScript version via terminal on mac? | 8 | 2012-01-10 15:21:19 | <p>My system node.js version is v0.6.1 but the current stable version is v0.6.7.
My system CoffeeScript version is v1.1.2 but the current stable version is v1.2.0</p>
<p>How could I update the node.js and CoffeeScript via terminal on mac( using mac )? I am pretty good with command line but I do need some help get st... | 17,994 | 836,083 | 2014-02-05 08:30:07 | 8,806,011 | 13 | 2012-01-10 15:43:44 | 66,226 | 2013-10-15 22:49:24 | https://stackoverflow.com/q/8805647 | https://stackoverflow.com/a/8806011 | <p>I'm a fan of Homebrew. Once you have it installed, you can just do</p>
<pre><code>brew install node
</code></pre>
<p>then install npm with</p>
<pre><code>curl http://npmjs.org/install.sh | sh
</code></pre>
<p>then use it to install CoffeeScript with</p>
<pre><code>npm install -g coffee-script
</code></pre>
<p>... | <p>I'm a fan of Homebrew. Once you have it installed, you can just do</p> <pre><code>brew install node </code></pre> <p>then install npm with</p> <pre><code>curl http://npmjs.org/install.sh | sh </code></pre> <p>then use it to install CoffeeScript with</p> <pre><code>npm install -g coffee-script </code></pre> <p>... | 387, 391, 46426, 57129 | bash, coffeescript, node.js, terminal | <h1>How to update node.js and CoffeeScript version via terminal on mac?</h1>
<p>My system node.js version is v0.6.1 but the current stable version is v0.6.7.
My system CoffeeScript version is v1.1.2 but the current stable version is v1.2.0</p>
<p>How could I update the node.js and CoffeeScript via terminal on mac( u... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,429 | bash | # How to update node.js and CoffeeScript version via terminal on mac?
My system node.js version is v0.6.1 but the current stable version is v0.6.7.
My system CoffeeScript version is v1.1.2 but the current stable version is v1.2.0
How could I update the node.js and CoffeeScript via terminal on mac( using mac )? I am p... | I'm a fan of Homebrew. Once you have it installed, you can just do
```
brew install node
```
then install npm with
```
curl http://npmjs.org/install.sh | sh
```
then use it to install CoffeeScript with
```
npm install -g coffee-script
```
If you don't have Homebrew or don't want to bother with it, replace the fir... |
8566704 | Windows / Powershell version of the Unix 'which' Utility | 8 | 2011-12-19 19:52:00 | <p>The 'which' utility, when run with a parameter naming an executable, will tell you the first executable with that name it finds in your path, if found at all. This gives a good idea which version of the executable will be run. (Forgive me if this description is incomplete, but it conveys the general idea)</p>
<p>I'... | 941 | 3,805 | 2021-01-21 18:22:43 | 8,566,744 | 13 | 2011-12-19 19:55:26 | 995,351 | 2011-12-19 20:03:55 | https://stackoverflow.com/q/8566704 | https://stackoverflow.com/a/8566744 | <p>You can use <code>Get-Command <command></code>, or shorten it to <code>gcm</code>.</p>
| <p>You can use <code>Get-Command <command></code>, or shorten it to <code>gcm</code>.</p> | 64, 526 | powershell, windows | <h1>Windows / Powershell version of the Unix 'which' Utility</h1>
<p>The 'which' utility, when run with a parameter naming an executable, will tell you the first executable with that name it finds in your path, if found at all. This gives a good idea which version of the executable will be run. (Forgive me if this desc... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,430 | bash | # Windows / Powershell version of the Unix 'which' Utility
The 'which' utility, when run with a parameter naming an executable, will tell you the first executable with that name it finds in your path, if found at all. This gives a good idea which version of the executable will be run. (Forgive me if this description i... | You can use `Get-Command <command>`, or shorten it to `gcm`. |
7528646 | In bash, how can I have a set of arguments in any random order? Like a key-value pair? | 8 | 2011-09-23 12:02:41 | <p><strong>Example:</strong> </p>
<pre><code>./myscript --ip 192.168.1.1 --port 1985
</code></pre>
<p><strong>or another possible</strong></p>
<pre><code>./myscript --port 1985 --ip 192.168.1.1
</code></pre>
<p><strong>I want to allow my script to take a set of arguments, in any order</strong></p>
<pre><code>./mys... | 12,782 | 745,835 | 2018-01-25 03:58:33 | 7,528,700 | 13 | 2011-09-23 12:08:01 | 329,407 | 2011-09-23 12:08:01 | https://stackoverflow.com/q/7528646 | https://stackoverflow.com/a/7528700 | <p>take a look at <a href="http://wiki.bash-hackers.org/howto/getopts_tutorial" rel="noreferrer"><code>getopts</code></a></p>
<blockquote>
<p><strong>getopts</strong>: getopts optstring name [arg]<br>
Parse option arguments.</p>
<p>Getopts is used by shell procedures to parse positional parameters
as... | <p>take a look at <a href="http://wiki.bash-hackers.org/howto/getopts_tutorial" rel="noreferrer"><code>getopts</code></a></p> <blockquote> <p><strong>getopts</strong>: getopts optstring name [arg]<br> Parse option arguments.</p> <p>Getopts is used by shell procedures to parse positional parameters as... | 387 | bash | <h1>In bash, how can I have a set of arguments in any random order? Like a key-value pair?</h1>
<p><strong>Example:</strong> </p>
<pre><code>./myscript --ip 192.168.1.1 --port 1985
</code></pre>
<p><strong>or another possible</strong></p>
<pre><code>./myscript --port 1985 --ip 192.168.1.1
</code></pre>
<p><strong>I... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,431 | bash | # In bash, how can I have a set of arguments in any random order? Like a key-value pair?
**Example:**
```
./myscript --ip 192.168.1.1 --port 1985
```
**or another possible**
```
./myscript --port 1985 --ip 192.168.1.1
```
**I want to allow my script to take a set of arguments, in any order**
```
./myscript a b c ... | take a look at [`getopts`](http://wiki.bash-hackers.org/howto/getopts_tutorial)
> **getopts**: getopts optstring name [arg]
> Parse option arguments.
>
> Getopts is used by shell procedures to parse positional parameters
> as options.
>
> *`OPTSTRING`* contains the option letters to be recognized; if a letter
> is f... |
6844228 | Passing arguments to octave function from within bash script | 8 | 2011-07-27 12:24:10 | <p>I wrote a function in Octave that takes in a line read from a file (one line at a time) as input argument. I use a bash script to read a line at a time from the file and then pass that as argument to the octave function from within the script. </p>
<p>My bash script looks like so: </p>
<pre><code>#!/bin/bash
... | 13,188 | 350,685 | 2011-07-27 13:05:24 | 6,844,791 | 13 | 2011-07-27 13:05:24 | 7,552 | 2011-07-27 13:05:24 | https://stackoverflow.com/q/6844228 | https://stackoverflow.com/a/6844791 | <p>The single quotes are preventing the shell from substituting the variable:</p>
<pre><code>octave --silent --eval "myOctaveFunc(\"$line\")"
</code></pre>
<p>If octave lets you use single quotes to quote strings, it will look a little cleaner (inside double quotes, single quotes have no special meaning):</p>
<pre><... | <p>The single quotes are preventing the shell from substituting the variable:</p> <pre><code>octave --silent --eval "myOctaveFunc(\"$line\")" </code></pre> <p>If octave lets you use single quotes to quote strings, it will look a little cleaner (inside double quotes, single quotes have no special meaning):</p> <pre><... | 387, 531, 1231, 11891 | bash, command-line, octave, scripting | <h1>Passing arguments to octave function from within bash script</h1>
<p>I wrote a function in Octave that takes in a line read from a file (one line at a time) as input argument. I use a bash script to read a line at a time from the file and then pass that as argument to the octave function from within the script. </... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,432 | bash | # Passing arguments to octave function from within bash script
I wrote a function in Octave that takes in a line read from a file (one line at a time) as input argument. I use a bash script to read a line at a time from the file and then pass that as argument to the octave function from within the script.
My bash scr... | The single quotes are preventing the shell from substituting the variable:
```
octave --silent --eval "myOctaveFunc(\"$line\")"
```
If octave lets you use single quotes to quote strings, it will look a little cleaner (inside double quotes, single quotes have no special meaning):
```
octave --silent --eval "myOctaveF... |
6547408 | Start external app with ShellExecuteEx and wait until it become initialized | 8 | 2011-07-01 11:33:31 | <p>I have an application which needs to run several other applications in chain. I am running them via <code>ShellExecuteEx</code>. The order of running each of the apps is very important cause they are dependant on each other. For example:</p>
<pre><code>Start(App1);
If App1.IsRunning then
Start(App2);
If App2.IsR... | 3,876 | 110,603 | 2011-07-01 13:18:01 | 6,547,526 | 13 | 2011-07-01 11:44:57 | 505,088 | 2011-07-01 11:44:57 | https://stackoverflow.com/q/6547408 | https://stackoverflow.com/a/6547526 | <p>You can probably achieve what you need by calling <a href="http://msdn.microsoft.com/en-us/library/ms687022%28v=VS.85%29.aspx" rel="noreferrer"><code>WaitForInputIdle()</code></a> on each process handle returned by <code>ShellExecute()</code>. </p>
<blockquote>
<p>Waits until the specified process has finished pr... | <p>You can probably achieve what you need by calling <a href="http://msdn.microsoft.com/en-us/library/ms687022%28v=VS.85%29.aspx" rel="noreferrer"><code>WaitForInputIdle()</code></a> on each process handle returned by <code>ShellExecute()</code>. </p> <blockquote> <p>Waits until the specified process has finished pr... | 64, 118, 889, 48069 | delphi, shellexecuteex, winapi, windows | <h1>Start external app with ShellExecuteEx and wait until it become initialized</h1>
<p>I have an application which needs to run several other applications in chain. I am running them via <code>ShellExecuteEx</code>. The order of running each of the apps is very important cause they are dependant on each other. For exa... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,433 | bash | # Start external app with ShellExecuteEx and wait until it become initialized
I have an application which needs to run several other applications in chain. I am running them via `ShellExecuteEx`. The order of running each of the apps is very important cause they are dependant on each other. For example:
```
Start(App... | You can probably achieve what you need by calling [`WaitForInputIdle()`](http://msdn.microsoft.com/en-us/library/ms687022%28v=VS.85%29.aspx) on each process handle returned by `ShellExecute()`.
> Waits until the specified process has finished processing its initial input and is waiting for user input with no input pen... |
6034054 | How to Edit .csproj files with PowerShell - Visual Studio 2010 | 8 | 2011-05-17 16:27:14 | <p>I need some help editing a csproj file using PowerShell. I basically need to select a node and alter it. </p>
<p>Example:</p>
<pre><code><None Include="T4\WebConfigSettingGeneratorScript.tt">
<Generator>TextTemplatingFileGenerator</Generator>
<LastGenOutput>WebConfigSettingGeneratorScr... | 6,618 | 441,862 | 2018-08-20 09:22:27 | 6,034,606 | 13 | 2011-05-17 17:17:44 | 153,982 | 2018-08-20 09:22:27 | https://stackoverflow.com/q/6034054 | https://stackoverflow.com/a/6034606 | <p>I do this kind of thing a lot. I keep around a set of helper functions for manipulating XML files - particular C# project files. Try this out:</p>
<pre><code>param($path)
$MsbNS = @{msb = 'http://schemas.microsoft.com/developer/msbuild/2003'}
function RemoveElement([xml]$Project, [string]$XPath, [switch]$SingleNod... | <p>I do this kind of thing a lot. I keep around a set of helper functions for manipulating XML files - particular C# project files. Try this out:</p> <pre><code>param($path) $MsbNS = @{msb = 'http://schemas.microsoft.com/developer/msbuild/2003'} function RemoveElement([xml]$Project, [string]$XPath, [switch]$SingleNod... | 526, 14456 | powershell, visual-studio-2010 | <h1>How to Edit .csproj files with PowerShell - Visual Studio 2010</h1>
<p>I need some help editing a csproj file using PowerShell. I basically need to select a node and alter it. </p>
<p>Example:</p>
<pre><code><None Include="T4\WebConfigSettingGeneratorScript.tt">
<Generator>TextTemplatingFileGenerat... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,434 | bash | # How to Edit .csproj files with PowerShell - Visual Studio 2010
I need some help editing a csproj file using PowerShell. I basically need to select a node and alter it.
Example:
```
<None Include="T4\WebConfigSettingGeneratorScript.tt">
<Generator>TextTemplatingFileGenerator</Generator>
<LastGenOutput>WebConfig... | I do this kind of thing a lot. I keep around a set of helper functions for manipulating XML files - particular C# project files. Try this out:
```
param($path)
$MsbNS = @{msb = 'http://schemas.microsoft.com/developer/msbuild/2003'}
function RemoveElement([xml]$Project, [string]$XPath, [switch]$SingleNode)
{
$node... |
5862396 | Powershell Get-ChildItem progress question | 8 | 2011-05-02 20:57:35 | <p>So, I've got a set of directories 00-99 in a folder. Each of those directories has 100 subdirectories, 00-99. Each of those subdirectories has thousands of images.</p>
<p>What I'm attempting to do is basically get a progress report while it's computing the average file size, but I can't get that to work. Here's my c... | 12,064 | 148,004 | 2023-09-12 14:17:28 | 5,862,553 | 13 | 2011-05-02 21:12:55 | 526,535 | 2011-05-02 21:12:55 | https://stackoverflow.com/q/5862396 | https://stackoverflow.com/a/5862553 | <p>Something like this?</p>
<pre><code>get-childitem -recurse -filter *.exe |
%{Write-Host Examining file: $_.fullname; $_} |
measure-object -Property length -Average
</code></pre>
| <p>Something like this?</p> <pre><code>get-childitem -recurse -filter *.exe | %{Write-Host Examining file: $_.fullname; $_} | measure-object -Property length -Average </code></pre> | 526, 598, 2844, 7060, 29006 | get-childitem, performance, pipeline, powershell, progress | <h1>Powershell Get-ChildItem progress question</h1>
<p>So, I've got a set of directories 00-99 in a folder. Each of those directories has 100 subdirectories, 00-99. Each of those subdirectories has thousands of images.</p>
<p>What I'm attempting to do is basically get a progress report while it's computing the average ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,435 | bash | # Powershell Get-ChildItem progress question
So, I've got a set of directories 00-99 in a folder. Each of those directories has 100 subdirectories, 00-99. Each of those subdirectories has thousands of images.
What I'm attempting to do is basically get a progress report while it's computing the average file size, but ... | Something like this?
```
get-childitem -recurse -filter *.exe |
%{Write-Host Examining file: $_.fullname; $_} |
measure-object -Property length -Average
``` |
5521112 | Using RVM in eshell of Emacs | 8 | 2011-04-02 04:16:14 | <p>Using RVM in eshell of emacs, I am not able to set the ruby version. Why?
Environment : Ubuntu 9.10</p>
<pre><code>/media/Work/rubyworkspace $ ruby -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [i486-linux]
/media/Work/rubyworkspace $ rvm use 1.9.2
Using /usr/local/rvm/gems/ruby-1.9.2-p180
/media/Work/rubyworkspace $ ... | 1,801 | 178,975 | 2012-03-10 15:40:14 | 5,521,368 | 13 | 2011-04-02 05:27:23 | 229,602 | 2011-04-02 05:27:23 | https://stackoverflow.com/q/5521112 | https://stackoverflow.com/a/5521368 | <p>As far as I can tell, RVM relies on the shell being a "regular" UNIX shell. Selection of the correct interpreter etc. is done using shell variables and these don't apply to eshell which has it's own way of configuring stuff. </p>
<p>One solution is to use <kbd>M</kbd>-<kbd>X</kbd> <code>term</code> and then use a r... | <p>As far as I can tell, RVM relies on the shell being a "regular" UNIX shell. Selection of the correct interpreter etc. is done using shell variables and these don't apply to eshell which has it's own way of configuring stuff. </p> <p>One solution is to use <kbd>M</kbd>-<kbd>X</kbd> <code>term</code> and then use a r... | 12, 371, 549, 32732, 46495 | emacs, eshell, ruby, rvm, ubuntu | <h1>Using RVM in eshell of Emacs</h1>
<p>Using RVM in eshell of emacs, I am not able to set the ruby version. Why?
Environment : Ubuntu 9.10</p>
<pre><code>/media/Work/rubyworkspace $ ruby -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [i486-linux]
/media/Work/rubyworkspace $ rvm use 1.9.2
Using /usr/local/rvm/gems/ruby-1... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,436 | bash | # Using RVM in eshell of Emacs
Using RVM in eshell of emacs, I am not able to set the ruby version. Why?
Environment : Ubuntu 9.10
```
/media/Work/rubyworkspace $ ruby -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [i486-linux]
/media/Work/rubyworkspace $ rvm use 1.9.2
Using /usr/local/rvm/gems/ruby-1.9.2-p180
/media/Wor... | As far as I can tell, RVM relies on the shell being a "regular" UNIX shell. Selection of the correct interpreter etc. is done using shell variables and these don't apply to eshell which has it's own way of configuring stuff.
One solution is to use `M`-`X` `term` and then use a regular shell inside that. The other is t... |
5142729 | grep for expression containing variable | 8 | 2011-02-28 13:43:04 | <p>I want to add this command <strong>grep -co '\b5\b' $INFILE</strong> in a bash script. The problem is that instead of 5 i want to use a variable in its place so i write:</p>
<pre><code>V=`grep -co '\b$L\b' $INFILE`
</code></pre>
<p>but it does not work since the $ is used to describe internally the end of line in ... | 5,634 | 466,825 | 2022-06-01 17:31:41 | 5,142,743 | 13 | 2011-02-28 13:44:12 | 616,700 | 2015-07-29 13:24:00 | https://stackoverflow.com/q/5142729 | https://stackoverflow.com/a/5142743 | <p>Use <code>"</code> instead of <code>'</code> to allow expansion of your <code>$L</code> variable.</p>
| <p>Use <code>"</code> instead of <code>'</code> to allow expansion of your <code>$L</code> variable.</p> | 387 | bash | <h1>grep for expression containing variable</h1>
<p>I want to add this command <strong>grep -co '\b5\b' $INFILE</strong> in a bash script. The problem is that instead of 5 i want to use a variable in its place so i write:</p>
<pre><code>V=`grep -co '\b$L\b' $INFILE`
</code></pre>
<p>but it does not work since the $ i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,437 | bash | # grep for expression containing variable
I want to add this command **grep -co '\b5\b' $INFILE** in a bash script. The problem is that instead of 5 i want to use a variable in its place so i write:
```
V=`grep -co '\b$L\b' $INFILE`
```
but it does not work since the $ is used to describe internally the end of line ... | Use `"` instead of `'` to allow expansion of your `$L` variable. |
4569149 | Bash: How to escape $@? | 8 | 2010-12-31 09:07:52 | <p>I need to write a bash script that, among other things, should pass all its arguments intact to another program.</p>
<p>Minimal example:</p>
<pre>
$ cat >proxy.sh
#!/bin/bash
./script.sh $@
^D
$ chmod +x proxy.sh
$ cat >script.sh
#!/bin/bash
echo one $1
echo two $2
echo three $3
^D
$ chmod +x script.sh
<... | 2,279 | 6,236 | 2012-02-14 19:00:48 | 4,569,168 | 13 | 2010-12-31 09:11:24 | 89,806 | 2010-12-31 09:11:24 | https://stackoverflow.com/q/4569149 | https://stackoverflow.com/a/4569168 | <p>Quote <code>$@</code>, making it <code>"$@"</code>:</p>
<pre><code>$ cat >proxy.sh
#!/bin/bash
./script.sh "$@"
^D
</code></pre>
<p>Then it retains the original quotes:</p>
<pre><code>one a b
two c
three
</code></pre>
| <p>Quote <code>$@</code>, making it <code>"$@"</code>:</p> <pre><code>$ cat >proxy.sh #!/bin/bash ./script.sh "$@" ^D </code></pre> <p>Then it retains the original quotes:</p> <pre><code>one a b two c three </code></pre> | 387, 4804, 31134 | bash, command-line-arguments, escaping | <h1>Bash: How to escape $@?</h1>
<p>I need to write a bash script that, among other things, should pass all its arguments intact to another program.</p>
<p>Minimal example:</p>
<pre>
$ cat >proxy.sh
#!/bin/bash
./script.sh $@
^D
$ chmod +x proxy.sh
$ cat >script.sh
#!/bin/bash
echo one $1
echo two $2
echo thre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,438 | bash | # Bash: How to escape $@?
I need to write a bash script that, among other things, should pass all its arguments intact to another program.
Minimal example:
```
$ cat >proxy.sh
#!/bin/bash
./script.sh $@
^D
$ chmod +x proxy.sh
$ cat >script.sh
#!/bin/bash
echo one $1
echo two $2
echo three $3
^D
$ chmod +x s... | Quote `$@`, making it `"$@"`:
```
$ cat >proxy.sh
#!/bin/bash
./script.sh "$@"
^D
```
Then it retains the original quotes:
```
one a b
two c
three
``` |
4467376 | how to passing arguments to an alias | 8 | 2010-12-17 03:22:51 | <p>i add an alias in .bashrc</p>
<p>alias sr='sudo /etc/rc.d/[parameter?] restart'</p>
<p>sr network -> sudo /etc/rc.d/network restart</p>
<p>sr sshd -> sudo /etc/rc.d/sshd restart</p>
<p>could it be achieved, thanks!</p>
| 7,037 | 538,888 | 2018-10-16 03:50:01 | 4,467,413 | 13 | 2010-12-17 03:31:28 | 90,848 | 2010-12-17 03:31:28 | https://stackoverflow.com/q/4467376 | https://stackoverflow.com/a/4467413 | <p>Use a shell function instead. eg:</p>
<pre><code>function sr () {
sudo /etc/rc.d/"$1" restart
}
</code></pre>
| <p>Use a shell function instead. eg:</p> <pre><code>function sr () { sudo /etc/rc.d/"$1" restart } </code></pre> | 387, 1448 | alias, bash | <h1>how to passing arguments to an alias</h1>
<p>i add an alias in .bashrc</p>
<p>alias sr='sudo /etc/rc.d/[parameter?] restart'</p>
<p>sr network -> sudo /etc/rc.d/network restart</p>
<p>sr sshd -> sudo /etc/rc.d/sshd restart</p>
<p>could it be achieved, thanks!</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,439 | bash | # how to passing arguments to an alias
i add an alias in .bashrc
alias sr='sudo /etc/rc.d/[parameter?] restart'
sr network -> sudo /etc/rc.d/network restart
sr sshd -> sudo /etc/rc.d/sshd restart
could it be achieved, thanks! | Use a shell function instead. eg:
```
function sr () {
sudo /etc/rc.d/"$1" restart
}
``` |
3075227 | sequentially executing background processes unix | 8 | 2010-06-19 10:53:37 | <p>I have two scripts say 'S1' and 'S2'. I execute these scripts as,</p>
<blockquote>
<p>nohup S1 & </p>
<p>nohup S2 &</p>
</blockquote>
<p>But I would like them to execute sequentially. ie., S2 should execute only on successful completion of S1. How should I go about doing this?. How can I know when S... | 5,029 | 368,995 | 2010-06-19 11:32:07 | 3,075,234 | 13 | 2010-06-19 10:56:46 | 303,180 | 2010-06-19 11:32:07 | https://stackoverflow.com/q/3075227 | https://stackoverflow.com/a/3075234 | <p>You can execute them, sequentially, like this:</p>
<pre><code>(nohup S1 && nohup S2) &
</code></pre>
<p>Try</p>
<pre><code>(echo 1 && sleep 1 && echo 2) &
</code></pre>
<p>The <a href="http://www.devshed.com/c/a/BrainDump/Better-Command-Execution-with-bash/" rel="noreferrer">doubl... | <p>You can execute them, sequentially, like this:</p> <pre><code>(nohup S1 && nohup S2) & </code></pre> <p>Try</p> <pre><code>(echo 1 && sleep 1 && echo 2) & </code></pre> <p>The <a href="http://www.devshed.com/c/a/BrainDump/Better-Command-Execution-with-bash/" rel="noreferrer">doubl... | 34, 58, 390, 989, 15292 | aix, background-process, linux, shell, unix | <h1>sequentially executing background processes unix</h1>
<p>I have two scripts say 'S1' and 'S2'. I execute these scripts as,</p>
<blockquote>
<p>nohup S1 & </p>
<p>nohup S2 &</p>
</blockquote>
<p>But I would like them to execute sequentially. ie., S2 should execute only on successful completion of S1... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,440 | bash | # sequentially executing background processes unix
I have two scripts say 'S1' and 'S2'. I execute these scripts as,
> nohup S1 &
>
> nohup S2 &
But I would like them to execute sequentially. ie., S2 should execute only on successful completion of S1. How should I go about doing this?. How can I know when S1 finishe... | You can execute them, sequentially, like this:
```
(nohup S1 && nohup S2) &
```
Try
```
(echo 1 && sleep 1 && echo 2) &
```
The [double ampersand operator is described here](http://www.devshed.com/c/a/BrainDump/Better-Command-Execution-with-bash/).
Note that when using `&&`, `S2` only runs if `S1` finishes "succes... |
2902874 | Input encoding : accepting UTF-8 | 8 | 2010-05-25 07:47:40 | <p>I need to get output of native application under PowerShell. The problem is, output is encoded with UTF-8 (no BOM), which PowerShell does not recognize and just converts those funky UTF chars directly into Unicode.</p>
<p>I've found PowerShell has <code>$OutputEncoding</code> variable, but it does not seem to affec... | 6,555 | 199,621 | 2010-05-26 06:55:51 | 2,905,884 | 13 | 2010-05-25 15:04:01 | 153,982 | 2010-05-25 20:01:45 | https://stackoverflow.com/q/2902874 | https://stackoverflow.com/a/2905884 | <p>I see the issue now with the program below (stdout.cpp - cl stdout.cpp):</p>
<pre><code>#include <stdio.h>
void main()
{
char bytes[] = { 0x41, 0x53, 0x43, 0x49,
0x49, 0x20, 0x6F, 0x75,
0x74, 0x70, 0x75, 0x74,
0xE1, 0xBE, 0xB9};
for (i... | <p>I see the issue now with the program below (stdout.cpp - cl stdout.cpp):</p> <pre><code>#include <stdio.h> void main() { char bytes[] = { 0x41, 0x53, 0x43, 0x49, 0x49, 0x20, 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0xE1, 0xBE, 0xB9}; for (i... | 526, 1124 | encoding, powershell | <h1>Input encoding : accepting UTF-8</h1>
<p>I need to get output of native application under PowerShell. The problem is, output is encoded with UTF-8 (no BOM), which PowerShell does not recognize and just converts those funky UTF chars directly into Unicode.</p>
<p>I've found PowerShell has <code>$OutputEncoding</cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,441 | bash | # Input encoding : accepting UTF-8
I need to get output of native application under PowerShell. The problem is, output is encoded with UTF-8 (no BOM), which PowerShell does not recognize and just converts those funky UTF chars directly into Unicode.
I've found PowerShell has `$OutputEncoding` variable, but it does no... | I see the issue now with the program below (stdout.cpp - cl stdout.cpp):
```
#include <stdio.h>
void main()
{
char bytes[] = { 0x41, 0x53, 0x43, 0x49,
0x49, 0x20, 0x6F, 0x75,
0x74, 0x70, 0x75, 0x74,
0xE1, 0xBE, 0xB9};
for (int i = 0; i < 15; i+... |
2587709 | Automatically execute commands on launching python shell | 8 | 2010-04-06 19:36:09 | <p>I was wondering if there is a way to automatically run commands on entering the python shell as you would with the .bash_profile or .profile scripts with bash. I would like to automatically import some modules so I don't have to type the whole shebang everytime I hop into the shell.</p>
<p>Thanks, </p>
| 961 | 278,205 | 2010-04-07 17:09:33 | 2,587,733 | 13 | 2010-04-06 19:39:01 | 9,453 | 2010-04-06 19:39:01 | https://stackoverflow.com/q/2587709 | https://stackoverflow.com/a/2587733 | <p>Yup you can use the <code>PYTHONSTARTUP</code> environment variable to do this as outlined <a href="http://docs.python.org/tutorial/interpreter.html#the-interactive-startup-file" rel="noreferrer">here</a></p>
| <p>Yup you can use the <code>PYTHONSTARTUP</code> environment variable to do this as outlined <a href="http://docs.python.org/tutorial/interpreter.html#the-interactive-startup-file" rel="noreferrer">here</a></p> | 16, 390 | python, shell | <h1>Automatically execute commands on launching python shell</h1>
<p>I was wondering if there is a way to automatically run commands on entering the python shell as you would with the .bash_profile or .profile scripts with bash. I would like to automatically import some modules so I don't have to type the whole shebang... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,442 | bash | # Automatically execute commands on launching python shell
I was wondering if there is a way to automatically run commands on entering the python shell as you would with the .bash_profile or .profile scripts with bash. I would like to automatically import some modules so I don't have to type the whole shebang everytim... | Yup you can use the `PYTHONSTARTUP` environment variable to do this as outlined [here](http://docs.python.org/tutorial/interpreter.html#the-interactive-startup-file) |
2439948 | Better way to make a bash script self-tracing? | 8 | 2010-03-13 20:40:46 | <p>I have certain critical bash scripts that are invoked by code I don't control, and where I can't see their console output. I want a complete trace of what these scripts did for later analysis. To do this I want to make each script self-tracing. Here is what I am currently doing:</p>
<pre><code>#!/bin/bash
# if last... | 2,256 | 14,028 | 2013-09-27 17:04:56 | 2,440,092 | 13 | 2010-03-13 21:27:39 | 99,692 | 2010-03-13 21:27:39 | https://stackoverflow.com/q/2439948 | https://stackoverflow.com/a/2440092 | <pre><code>#!/bin/bash
exec >>log_file 2>&1
echo Hello world
date
</code></pre>
<p><code>exec</code> has a magic behavior regarding redirections: “If <em>command</em> is not specified, any redirections take effect in the current shell, and the return status is 0. If there is a redirection error, the ... | <pre><code>#!/bin/bash exec >>log_file 2>&1 echo Hello world date </code></pre> <p><code>exec</code> has a magic behavior regarding redirections: “If <em>command</em> is not specified, any redirections take effect in the current shell, and the return status is 0. If there is a redirection error, the ... | 387, 942, 1441 | bash, logging, trace | <h1>Better way to make a bash script self-tracing?</h1>
<p>I have certain critical bash scripts that are invoked by code I don't control, and where I can't see their console output. I want a complete trace of what these scripts did for later analysis. To do this I want to make each script self-tracing. Here is what I a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,443 | bash | # Better way to make a bash script self-tracing?
I have certain critical bash scripts that are invoked by code I don't control, and where I can't see their console output. I want a complete trace of what these scripts did for later analysis. To do this I want to make each script self-tracing. Here is what I am current... | ```
#!/bin/bash
exec >>log_file 2>&1
echo Hello world
date
```
`exec` has a magic behavior regarding redirections: “If *command* is not specified, any redirections take effect in the current shell, and the return status is 0. If there is a redirection error, the return status is 1.”
Also, regarding your original sol... |
2435386 | read the contents of a directory using shell script | 8 | 2010-03-12 19:47:17 | <p>I'm trying to get the contents of a directory using shell script.</p>
<p>My script is:</p>
<pre><code>for entry in `ls`; do
echo $entry
done
</code></pre>
<p>However, my current directory contains many files with whitespaces in their names. In that case, this script fails.</p>
<p>What is the correct way to l... | 24,712 | 2,119,053 | 2013-10-31 08:28:39 | 2,435,393 | 13 | 2010-03-12 19:48:43 | 20,862 | 2010-03-12 19:48:43 | https://stackoverflow.com/q/2435386 | https://stackoverflow.com/a/2435393 | <pre><code>for entry in *
do
echo "$entry"
done
</code></pre>
| <pre><code>for entry in * do echo "$entry" done </code></pre> | 390, 9873 | directory-listing, shell | <h1>read the contents of a directory using shell script</h1>
<p>I'm trying to get the contents of a directory using shell script.</p>
<p>My script is:</p>
<pre><code>for entry in `ls`; do
echo $entry
done
</code></pre>
<p>However, my current directory contains many files with whitespaces in their names. In that ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,444 | bash | # read the contents of a directory using shell script
I'm trying to get the contents of a directory using shell script.
My script is:
```
for entry in `ls`; do
echo $entry
done
```
However, my current directory contains many files with whitespaces in their names. In that case, this script fails.
What is the co... | ```
for entry in *
do
echo "$entry"
done
``` |
2426993 | Run a batch file every x number of seconds using PowerShell | 8 | 2010-03-11 16:59:31 | <p>I'd like to use a windows PowerShell script to run a batch file every x number of seconds. So it's the same batch file being run over and over again.</p>
<p>I've done some looking, but can't find what I'm looking for. It's for something that I want to run on a Windows XP machine. I've used Windows Scheduler a... | 14,632 | 102,312 | 2014-11-10 22:38:13 | 2,427,246 | 13 | 2010-03-11 17:35:16 | 153,982 | 2010-03-11 17:35:16 | https://stackoverflow.com/q/2426993 | https://stackoverflow.com/a/2427246 | <p>Just put the call to the batch file in a while loop e.g.:</p>
<pre><code>$period = [timespan]::FromSeconds(45)
$lastRunTime = [DateTime]::MinValue
while (1)
{
# If the next period isn't here yet, sleep so we don't consume CPU
while ((Get-Date) - $lastRunTime -lt $period) {
Start-Sleep -Millisecond... | <p>Just put the call to the batch file in a while loop e.g.:</p> <pre><code>$period = [timespan]::FromSeconds(45) $lastRunTime = [DateTime]::MinValue while (1) { # If the next period isn't here yet, sleep so we don't consume CPU while ((Get-Date) - $lastRunTime -lt $period) { Start-Sleep -Millisecond... | 64, 526 | powershell, windows | <h1>Run a batch file every x number of seconds using PowerShell</h1>
<p>I'd like to use a windows PowerShell script to run a batch file every x number of seconds. So it's the same batch file being run over and over again.</p>
<p>I've done some looking, but can't find what I'm looking for. It's for something that I wa... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,445 | bash | # Run a batch file every x number of seconds using PowerShell
I'd like to use a windows PowerShell script to run a batch file every x number of seconds. So it's the same batch file being run over and over again.
I've done some looking, but can't find what I'm looking for. It's for something that I want to run on a Wi... | Just put the call to the batch file in a while loop e.g.:
```
$period = [timespan]::FromSeconds(45)
$lastRunTime = [DateTime]::MinValue
while (1)
{
# If the next period isn't here yet, sleep so we don't consume CPU
while ((Get-Date) - $lastRunTime -lt $period) {
Start-Sleep -Milliseconds 500
}
... |
2102852 | What is the PowerShell equivalent to this grep+xargs command? | 8 | 2010-01-20 16:13:53 | <p>I'm trying to create a <a href="http://en.wikipedia.org/wiki/Command-line_interface" rel="nofollow noreferrer">CLI</a> command to have <a href="http://en.wikipedia.org/wiki/Team_Foundation_Server" rel="nofollow noreferrer">TFS</a> check out all files that have a particular string in them. I primarily use <a href="ht... | 10,187 | 1,409 | 2025-07-24 11:52:51 | 2,102,917 | 13 | 2010-01-20 16:21:33 | 153,982 | 2015-05-28 08:48:38 | https://stackoverflow.com/q/2102852 | https://stackoverflow.com/a/2102917 | <p>Using some UNIX aliases in PowerShell (like ls):</p>
<pre><code>ls -r | select-string 'SomeSearchString' | Foreach {tf edit $_.Path}
</code></pre>
<p>or in a more canonical Powershell form:</p>
<pre><code>Get-ChildItem -Recurse | Select-String 'SomeSearchString' |
Foreach {tf edit $_.Path}
</code></pre>
<p>... | <p>Using some UNIX aliases in PowerShell (like ls):</p> <pre><code>ls -r | select-string 'SomeSearchString' | Foreach {tf edit $_.Path} </code></pre> <p>or in a more canonical Powershell form:</p> <pre><code>Get-ChildItem -Recurse | Select-String 'SomeSearchString' | Foreach {tf edit $_.Path} </code></pre> <p>... | 526, 1271, 10326 | grep, powershell, xargs | <h1>What is the PowerShell equivalent to this grep+xargs command?</h1>
<p>I'm trying to create a <a href="http://en.wikipedia.org/wiki/Command-line_interface" rel="nofollow noreferrer">CLI</a> command to have <a href="http://en.wikipedia.org/wiki/Team_Foundation_Server" rel="nofollow noreferrer">TFS</a> check out all f... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,446 | bash | # What is the PowerShell equivalent to this grep+xargs command?
I'm trying to create a [CLI](http://en.wikipedia.org/wiki/Command-line_interface) command to have [TFS](http://en.wikipedia.org/wiki/Team_Foundation_Server) check out all files that have a particular string in them. I primarily use [Cygwin](http://en.wiki... | Using some UNIX aliases in PowerShell (like ls):
```
ls -r | select-string 'SomeSearchString' | Foreach {tf edit $_.Path}
```
or in a more canonical Powershell form:
```
Get-ChildItem -Recurse | Select-String 'SomeSearchString' |
Foreach {tf edit $_.Path}
```
and using PowerShell aliases:
```
gci -r | sls 'So... |
2057631 | Must PowerShell scripts be called using only a single line? | 8 | 2010-01-13 15:09:38 | <p>I have some PowerShell scripts that accept many long parameters, like,</p>
<pre><code>myScript.ps1 -completePathToFile "C:\...\...\...\file.txt" -completePathForOutput "C:\...\...\...\output.log" -recipients ("me@me.com") -etc.
</code></pre>
<p>I can't seem to make PowerShell run such scripts unless all the parame... | 4,863 | 52,225 | 2010-01-13 17:31:28 | 2,057,670 | 13 | 2010-01-13 15:14:13 | 153,982 | 2010-01-13 17:31:28 | https://stackoverflow.com/q/2057631 | https://stackoverflow.com/a/2057670 | <p>PowerShell thinks the command is complete at the end of the line unless it sees certain characters like a pipe, open paren or open curly. Just put a line continuation character `` ` at the end of each line but make sure there are no spaces after that continuation character:</p>
<pre><code>myScript.ps1 `
-complet... | <p>PowerShell thinks the command is complete at the end of the line unless it sees certain characters like a pipe, open paren or open curly. Just put a line continuation character `` ` at the end of each line but make sure there are no spaces after that continuation character:</p> <pre><code>myScript.ps1 ` -complet... | 360, 526, 1231 | command-line, parameters, powershell | <h1>Must PowerShell scripts be called using only a single line?</h1>
<p>I have some PowerShell scripts that accept many long parameters, like,</p>
<pre><code>myScript.ps1 -completePathToFile "C:\...\...\...\file.txt" -completePathForOutput "C:\...\...\...\output.log" -recipients ("me@me.com") -etc.
</code></pre>
<p>I... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,447 | bash | # Must PowerShell scripts be called using only a single line?
I have some PowerShell scripts that accept many long parameters, like,
```
myScript.ps1 -completePathToFile "C:\...\...\...\file.txt" -completePathForOutput "C:\...\...\...\output.log" -recipients ("me@me.com") -etc.
```
I can't seem to make PowerShell ru... | PowerShell thinks the command is complete at the end of the line unless it sees certain characters like a pipe, open paren or open curly. Just put a line continuation character `` ` at the end of each line but make sure there are no spaces after that continuation character:
```
myScript.ps1 `
-completePathToFile "C:... |
1608506 | Powershell script to enable 'IIS Management Scripts and Tools' | 8 | 2009-10-22 16:45:24 | <p>After looking around (for not terribly long I have to admit) I wonder if anyone can point me to a Powershell script that checks if 'IIS Management Scripts and Tools' is enabled and if its not then it enables it like you would from Add Windows features.</p>
<p>I checked poshcode.org and powershell.com and couldnt fi... | 18,404 | 162,325 | 2010-01-22 16:34:24 | 1,612,561 | 13 | 2009-10-23 10:23:54 | 26,478 | 2009-10-23 10:23:54 | https://stackoverflow.com/q/1608506 | https://stackoverflow.com/a/1612561 | <p>Would that be for Windows 2008 or Windows Server 2008 R2?</p>
<p>Server 2008R2:</p>
<p>-To query:</p>
<pre><code>PS> get-windowsfeature|where{$_.name -eq "Web-Scripting-Tools"}
Display Name Name
------------ ----
[X]... | <p>Would that be for Windows 2008 or Windows Server 2008 R2?</p> <p>Server 2008R2:</p> <p>-To query:</p> <pre><code>PS> get-windowsfeature|where{$_.name -eq "Web-Scripting-Tools"} Display Name Name ------------ ---- [X]... | 487, 526, 34595 | build-automation, powershell, windows-7 | <h1>Powershell script to enable 'IIS Management Scripts and Tools'</h1>
<p>After looking around (for not terribly long I have to admit) I wonder if anyone can point me to a Powershell script that checks if 'IIS Management Scripts and Tools' is enabled and if its not then it enables it like you would from Add Windows fe... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,448 | bash | # Powershell script to enable 'IIS Management Scripts and Tools'
After looking around (for not terribly long I have to admit) I wonder if anyone can point me to a Powershell script that checks if 'IIS Management Scripts and Tools' is enabled and if its not then it enables it like you would from Add Windows features.
... | Would that be for Windows 2008 or Windows Server 2008 R2?
Server 2008R2:
-To query:
```
PS> get-windowsfeature|where{$_.name -eq "Web-Scripting-Tools"}
Display Name Name
------------ ----
[X] IIS Management Scripts and Too... |
157342 | bash script runs from shell but not from cron job | 8 | 2008-10-01 12:32:13 | <p>Cron installation is vixie-cron</p>
<p><code>/etc/cron.daily/rmspam.cron</code></p>
<pre><code>#!/bin/bash
/usr/bin/rm /home/user/Maildir/.SPAM/cur/*;
</code></pre>
<p>I Have this simple bash script that I want to add to a cron job (also includes spam learning commands before) but this part always fails with "Fil... | 10,404 | 4,275 | 2011-01-18 12:19:56 | 157,369 | 13 | 2008-10-01 12:38:11 | 7,256 | 2008-10-12 06:24:41 | https://stackoverflow.com/q/157342 | https://stackoverflow.com/a/157369 | <p>If there are no files in the directory, then the wildcard will not be expanded and will be passed to the command directly. There is no file called "*", and then the command fails with "File or directory not found." Try this instead:</p>
<pre><code>if [ -f /home/user/Maildir/.SPAM/cur/* ]; then
rm /home/user/M... | <p>If there are no files in the directory, then the wildcard will not be expanded and will be passed to the command directly. There is no file called "*", and then the command fails with "File or directory not found." Try this instead:</p> <pre><code>if [ -f /home/user/Maildir/.SPAM/cur/* ]; then rm /home/user/M... | 58, 387, 601 | bash, cron, linux | <h1>bash script runs from shell but not from cron job</h1>
<p>Cron installation is vixie-cron</p>
<p><code>/etc/cron.daily/rmspam.cron</code></p>
<pre><code>#!/bin/bash
/usr/bin/rm /home/user/Maildir/.SPAM/cur/*;
</code></pre>
<p>I Have this simple bash script that I want to add to a cron job (also includes spam lea... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,449 | bash | # bash script runs from shell but not from cron job
Cron installation is vixie-cron
`/etc/cron.daily/rmspam.cron`
```
#!/bin/bash
/usr/bin/rm /home/user/Maildir/.SPAM/cur/*;
```
I Have this simple bash script that I want to add to a cron job (also includes spam learning commands before) but this part always fails w... | If there are no files in the directory, then the wildcard will not be expanded and will be passed to the command directly. There is no file called "*", and then the command fails with "File or directory not found." Try this instead:
```
if [ -f /home/user/Maildir/.SPAM/cur/* ]; then
rm /home/user/Maildir/.SPAM/cur... |
50312 | Get CPU usage in shell script? | 8 | 2008-09-08 18:05:34 | <p>I'm running some <a href="http://jakarta.apache.org/jmeter/" rel="noreferrer">JMeter</a> tests against a Java process to determine how responsive a web application is under load (500+ users). JMeter will give the response time for each web request, and I've written a script to ping the Tomcat Manager every X seconds... | 30,237 | 4,249 | 2021-01-28 13:19:18 | 50,334 | 13 | 2008-09-08 18:21:06 | 3,279 | 2008-09-08 18:21:06 | https://stackoverflow.com/q/50312 | https://stackoverflow.com/a/50334 | <p>Use <code>top -b</code> (and other switches if you want different outputs). It will just dump to stdout instead of jumping into a curses window.</p>
| <p>Use <code>top -b</code> (and other switches if you want different outputs). It will just dump to stdout instead of jumping into a curses window.</p> | 58, 390, 531 | linux, scripting, shell | <h1>Get CPU usage in shell script?</h1>
<p>I'm running some <a href="http://jakarta.apache.org/jmeter/" rel="noreferrer">JMeter</a> tests against a Java process to determine how responsive a web application is under load (500+ users). JMeter will give the response time for each web request, and I've written a script to... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,450 | bash | # Get CPU usage in shell script?
I'm running some [JMeter](http://jakarta.apache.org/jmeter/) tests against a Java process to determine how responsive a web application is under load (500+ users). JMeter will give the response time for each web request, and I've written a script to ping the Tomcat Manager every X seco... | Use `top -b` (and other switches if you want different outputs). It will just dump to stdout instead of jumping into a curses window. |
66924725 | How to exit from powershell function from function's statements | 7 | 2021-04-02 20:11:38 | <p>I expect that the return from the function statement (<code>begin</code>, <code>process</code>, <code>end</code>) should also terminate all its statements, but this does not happen.</p>
<p>I have a test function like this:</p>
<pre><code>function test($a) {
begin {
Write-Host 'begin ' -NoNewline
... | 10,213 | 11,469,204 | 2024-01-23 16:18:00 | 66,924,946 | 13 | 2021-04-02 20:34:48 | 45,375 | 2024-01-23 16:18:00 | https://stackoverflow.com/q/66924725 | https://stackoverflow.com/a/66924946 | <p>Your function is an <a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_Functions_Advanced" rel="noreferrer"><em>advanced</em></a> function, and therefore uses <code>begin</code>, <code>process</code> and <code>end</code> blocks.</p>
<p>In a <em>simple</em> (non-advance... | <p>Your function is an <a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_Functions_Advanced" rel="noreferrer"><em>advanced</em></a> function, and therefore uses <code>begin</code>, <code>process</code> and <code>end</code> blocks.</p> <p>In a <em>simple</em> (non-advance... | 526 | powershell | <h1>How to exit from powershell function from function's statements</h1>
<p>I expect that the return from the function statement (<code>begin</code>, <code>process</code>, <code>end</code>) should also terminate all its statements, but this does not happen.</p>
<p>I have a test function like this:</p>
<pre><code>functi... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,451 | bash | # How to exit from powershell function from function's statements
I expect that the return from the function statement (`begin`, `process`, `end`) should also terminate all its statements, but this does not happen.
I have a test function like this:
```
function test($a) {
begin {
Write-Host 'begin ' -No... | Your function is an [*advanced*](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_Functions_Advanced) function, and therefore uses `begin`, `process` and `end` blocks.
In a *simple* (non-advanced) function, in the *absence* of such blocks, `return` would indeed instantly exit t... |
62036686 | How can I remove the "SC2154" warning for environment variables | 7 | 2020-05-27 06:23:47 | <p>How can I remove shellcheck's warning "SC2154" when linting the shell script?</p>
<pre><code>#!/bin/bash
set -euo pipefail
IFS=$'\n\t'
echo "proxy=$http_proxy" | sudo tee -a /etc/test.txt
</code></pre>
<p>The warning is "SC2154: http_proxy is referenced but not assigned." </p>
<p>EDIT:
I want to write the envir... | 5,867 | 5,580,578 | 2025-07-09 07:21:43 | 62,036,949 | 13 | 2020-05-27 06:42:59 | 6,770,384 | 2023-07-18 08:29:56 | https://stackoverflow.com/q/62036686 | https://stackoverflow.com/a/62036949 | <p><sub>In general, the better solution would be to stick to the convention and name <em>your</em> environment variables in ALL_CAPS. However, in this case I understand that <code>http_proxy</code> is not <em>your</em> environment variable, but is dictated by programs like <code>curl</code>, <code>wget</code>, and so o... | <p><sub>In general, the better solution would be to stick to the convention and name <em>your</em> environment variables in ALL_CAPS. However, in this case I understand that <code>http_proxy</code> is not <em>your</em> environment variable, but is dictated by programs like <code>curl</code>, <code>wget</code>, and so o... | 387, 390, 3452, 117067 | bash, lint, shell, shellcheck | <h1>How can I remove the "SC2154" warning for environment variables</h1>
<p>How can I remove shellcheck's warning "SC2154" when linting the shell script?</p>
<pre><code>#!/bin/bash
set -euo pipefail
IFS=$'\n\t'
echo "proxy=$http_proxy" | sudo tee -a /etc/test.txt
</code></pre>
<p>The warning is "SC2154: http_proxy i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,452 | bash | # How can I remove the "SC2154" warning for environment variables
How can I remove shellcheck's warning "SC2154" when linting the shell script?
```
#!/bin/bash
set -euo pipefail
IFS=$'\n\t'
echo "proxy=$http_proxy" | sudo tee -a /etc/test.txt
```
The warning is "SC2154: http_proxy is referenced but not assigned."
... | In general, the better solution would be to stick to the convention and name *your* environment variables in ALL_CAPS. However, in this case I understand that `http_proxy` is not *your* environment variable, but is dictated by programs like `curl`, `wget`, and so on, so you cannot simply rename it.
---
You can [suppr... |
58574397 | How can I change the PowerShell prompt to show just the parent directory and current directory? | 7 | 2019-10-26 20:18:43 | <p>I would like to shorten my PowerShell prompt so that it just shows the parent directory and the current directory. For example, if the pwd is</p>
<pre><code>C:\Users\ndunn\OneDrive\Documents\Webucator\ClassFiles\python-basics\Demos
</code></pre>
<p>I want the prompt to be:</p>
<pre><code>PS ..\python-basics\Demos... | 4,600 | 5,128,561 | 2025-11-23 19:13:07 | 58,575,183 | 13 | 2019-10-26 22:23:43 | 45,375 | 2025-11-23 19:13:07 | https://stackoverflow.com/q/58574397 | https://stackoverflow.com/a/58575183 | <p>Try the following function, which should work on Windows and Unix-like platforms (in PowerShell <em>Core</em>) alike:</p>
<pre><code>function global:prompt {
$dirSep = [IO.Path]::DirectorySeparatorChar
$pathComponents = $PWD.Path.Split($dirSep)
$displayPath = if ($pathComponents.Count -le 3) {
$PWD.Path
... | <p>Try the following function, which should work on Windows and Unix-like platforms (in PowerShell <em>Core</em>) alike:</p> <pre><code>function global:prompt { $dirSep = [IO.Path]::DirectorySeparatorChar $pathComponents = $PWD.Path.Split($dirSep) $displayPath = if ($pathComponents.Count -le 3) { $PWD.Path ... | 526, 9938 | command-prompt, powershell | <h1>How can I change the PowerShell prompt to show just the parent directory and current directory?</h1>
<p>I would like to shorten my PowerShell prompt so that it just shows the parent directory and the current directory. For example, if the pwd is</p>
<pre><code>C:\Users\ndunn\OneDrive\Documents\Webucator\ClassFiles... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,453 | bash | # How can I change the PowerShell prompt to show just the parent directory and current directory?
I would like to shorten my PowerShell prompt so that it just shows the parent directory and the current directory. For example, if the pwd is
```
C:\Users\ndunn\OneDrive\Documents\Webucator\ClassFiles\python-basics\Demos... | Try the following function, which should work on Windows and Unix-like platforms (in PowerShell *Core*) alike:
```
function global:prompt {
$dirSep = [IO.Path]::DirectorySeparatorChar
$pathComponents = $PWD.Path.Split($dirSep)
$displayPath = if ($pathComponents.Count -le 3) {
$PWD.Path
} else {
'…{0}{1... |
54131197 | Find files with non-printing characters (null bytes) | 7 | 2019-01-10 14:49:29 | <p>I have got the log of my application with a field that contains strange characters.
I see these characters only when I use <code>less</code> command.</p>
<p>I tried to copy the result of my line of code in a text file and what I see is </p>
<pre><code>CTP_OUT=^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^... | 11,846 | 7,193,776 | 2024-10-07 18:11:40 | 54,133,873 | 13 | 2019-01-10 17:20:23 | 8,344,060 | 2024-10-07 18:11:40 | https://stackoverflow.com/q/54131197 | https://stackoverflow.com/a/54133873 | <p>I hardly believe it, I might write an answer involving <code>cat</code>!</p>
<p>The characters you are observing are <em>non-printable</em> characters which are often written in <a href="https://en.wikipedia.org/wiki/Caret_notation" rel="nofollow noreferrer">Caret notation</a>. The Caret notation of a character is a... | <p>I hardly believe it, I might write an answer involving <code>cat</code>!</p> <p>The characters you are observing are <em>non-printable</em> characters which are often written in <a href="https://en.wikipedia.org/wiki/Caret_notation" rel="nofollow noreferrer">Caret notation</a>. The Caret notation of a character is a... | 34, 58, 387, 1271 | bash, grep, linux, unix | <h1>Find files with non-printing characters (null bytes)</h1>
<p>I have got the log of my application with a field that contains strange characters.
I see these characters only when I use <code>less</code> command.</p>
<p>I tried to copy the result of my line of code in a text file and what I see is </p>
<pre><code>C... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,454 | bash | # Find files with non-printing characters (null bytes)
I have got the log of my application with a field that contains strange characters.
I see these characters only when I use `less` command.
I tried to copy the result of my line of code in a text file and what I see is
```
CTP_OUT=^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@... | I hardly believe it, I might write an answer involving `cat`!
The characters you are observing are *non-printable* characters which are often written in [Caret notation](https://en.wikipedia.org/wiki/Caret_notation). The Caret notation of a character is a way to visualize non-printable characters. As mentioned in the ... |
53544617 | How can I bypass execution policy when running scripts from Powershell ISE | 7 | 2018-11-29 17:33:26 | <p>So I can write a script in Powershell ISE, not save it, and it will run (F5/green arrow on the ISE). Once I save it, I get the error saying I can't run saved scripts. If I open a Powershell window in the directory the saved script exists, I can run it with</p>
<p><code>powershell -ExecutionPolicy ByPass -File scrip... | 14,376 | 2,868,510 | 2021-02-02 09:22:57 | 53,544,848 | 13 | 2018-11-29 17:48:18 | 2,868,510 | 2018-11-29 17:48:18 | https://stackoverflow.com/q/53544617 | https://stackoverflow.com/a/53544848 | <p>Ok so I just found out you can set Execution Policy for yourself (current user) without having admin rights. So if you're coming here from google do this:</p>
<p><code>Set-ExecutionPolicy -Scope "CurrentUser" -ExecutionPolicy "RemoteSigned"</code></p>
| <p>Ok so I just found out you can set Execution Policy for yourself (current user) without having admin rights. So if you're coming here from google do this:</p> <p><code>Set-ExecutionPolicy -Scope "CurrentUser" -ExecutionPolicy "RemoteSigned"</code></p> | 526 | powershell | <h1>How can I bypass execution policy when running scripts from Powershell ISE</h1>
<p>So I can write a script in Powershell ISE, not save it, and it will run (F5/green arrow on the ISE). Once I save it, I get the error saying I can't run saved scripts. If I open a Powershell window in the directory the saved script ex... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,455 | bash | # How can I bypass execution policy when running scripts from Powershell ISE
So I can write a script in Powershell ISE, not save it, and it will run (F5/green arrow on the ISE). Once I save it, I get the error saying I can't run saved scripts. If I open a Powershell window in the directory the saved script exists, I c... | Ok so I just found out you can set Execution Policy for yourself (current user) without having admin rights. So if you're coming here from google do this:
`Set-ExecutionPolicy -Scope "CurrentUser" -ExecutionPolicy "RemoteSigned"` |
53303222 | Powershell Script to run exe file with parameters | 7 | 2018-11-14 15:06:21 | <p>I need script to run exe file with parameters.
That's what I wrote, if there's a better way to do it?</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>$Command = "\\Networ... | 21,964 | 10,646,087 | 2021-10-19 15:05:08 | 53,304,607 | 13 | 2018-11-14 16:20:09 | 8,188,846 | 2021-10-19 15:05:08 | https://stackoverflow.com/q/53303222 | https://stackoverflow.com/a/53304607 | <p>You have a couple options when running an external executable.</p>
<hr />
<h1><a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_splatting?view=powershell-5.1" rel="noreferrer">Splatting</a></h1>
<pre><code>$command = '\\netpath\restart.exe'
$params = '/t:21600', '/m:3... | <p>You have a couple options when running an external executable.</p> <hr /> <h1><a href="https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_splatting?view=powershell-5.1" rel="noreferrer">Splatting</a></h1> <pre><code>$command = '\\netpath\restart.exe' $params = '/t:21600', '/m:3... | 64, 526, 531, 3727 | exe, powershell, scripting, windows | <h1>Powershell Script to run exe file with parameters</h1>
<p>I need script to run exe file with parameters.
That's what I wrote, if there's a better way to do it?</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,456 | bash | # Powershell Script to run exe file with parameters
I need script to run exe file with parameters.
That's what I wrote, if there's a better way to do it?
```
$Command = "\\Networkpath\Restart.exe"
$Parms = "/t:21600 /m:360 /r /f"
$Prms = $Parms.Split(" ")
& "$Command" $Prms
```
thanks | You have a couple options when running an external executable.
---
# [Splatting](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_splatting?view=powershell-5.1)
```
$command = '\\netpath\restart.exe'
$params = '/t:21600', '/m:360', '/r', '/f'
& $command @params
```
This meth... |
52787180 | Parse value from JSON when key contains dot (period) in Powershell | 7 | 2018-10-12 21:24:53 | <p><a href="https://i.sstatic.net/79dRd.jpg" rel="noreferrer"><img src="https://i.sstatic.net/79dRd.jpg" alt="enter image description here"></a></p>
<p>In the above example, I would like to get the value "Bug" from "System.WorkItemType"</p>
<p>using </p>
<pre><code>$response = Invoke-RestMethod -Url $someUri -Method... | 6,998 | 1,611,821 | 2018-10-13 01:58:33 | 52,787,376 | 13 | 2018-10-12 21:46:24 | 4,991,132 | 2018-10-13 01:58:33 | https://stackoverflow.com/q/52787180 | https://stackoverflow.com/a/52787376 | <p>If you put the property names in <code>""</code> or <code>''</code>, you should be able to get what you are looking for: </p>
<pre><code>$json= @'
{ "id" : 9983,
"rev" : 17,
"fields" :{
"System.AreaPath":"Cloud\\Dev Blue Team",
"System.TeamProject":"Cloud"
}
}
'@
$j = $Json | convertfrom-json
... | <p>If you put the property names in <code>""</code> or <code>''</code>, you should be able to get what you are looking for: </p> <pre><code>$json= @' { "id" : 9983, "rev" : 17, "fields" :{ "System.AreaPath":"Cloud\\Dev Blue Team", "System.TeamProject":"Cloud" } } '@ $j = $Json | convertfrom-json ... | 526, 1508, 30161 | json, jsonpath, powershell | <h1>Parse value from JSON when key contains dot (period) in Powershell</h1>
<p><a href="https://i.sstatic.net/79dRd.jpg" rel="noreferrer"><img src="https://i.sstatic.net/79dRd.jpg" alt="enter image description here"></a></p>
<p>In the above example, I would like to get the value "Bug" from "System.WorkItemType"</p>
<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,457 | bash | # Parse value from JSON when key contains dot (period) in Powershell
[](https://i.sstatic.net/79dRd.jpg)
In the above example, I would like to get the value "Bug" from "System.WorkItemType"
using
```
$response = Invoke-RestMethod -Url $someUri -Method ... | If you put the property names in `""` or `''`, you should be able to get what you are looking for:
```
$json= @'
{ "id" : 9983,
"rev" : 17,
"fields" :{
"System.AreaPath":"Cloud\\Dev Blue Team",
"System.TeamProject":"Cloud"
}
}
'@
$j = $Json | convertfrom-json
$j.fields."System.AreaPath"
$J.fields... |
52374260 | bash variable changes in loop with ffmpeg | 7 | 2018-09-17 19:05:26 | <p>I wrote a skript to quickly create short preview clips from vides I recorded on timestamps that I found worth checking out later for cutting.
My file with the timestamps is written like this</p>
<pre><code>FILE_NAME1#MM:SS MM:SS
FILE_NAME2#MM:SS MM:SS MM:SS MM:SS
</code></pre>
<p>example:</p>
<pre><code>MAH01728... | 1,548 | 2,470,901 | 2018-09-17 19:19:04 | 52,374,405 | 13 | 2018-09-17 19:19:04 | 1,126,841 | 2018-09-17 19:19:04 | https://stackoverflow.com/q/52374260 | https://stackoverflow.com/a/52374405 | <p><code>ffmpeg</code> reads from standard input, consuming data from <code>$1</code> that was intended for the <code>read</code> command at the top of the loop. Redirect its standard input from <code>/dev/null</code>:</p>
<pre><code>while IFS="#" read file timestamps; do
filename="$file.MP4"
for time in $timestam... | <p><code>ffmpeg</code> reads from standard input, consuming data from <code>$1</code> that was intended for the <code>read</code> command at the top of the loop. Redirect its standard input from <code>/dev/null</code>:</p> <pre><code>while IFS="#" read file timestamps; do filename="$file.MP4" for time in $timestam... | 387, 2314, 3847 | bash, ffmpeg, loops | <h1>bash variable changes in loop with ffmpeg</h1>
<p>I wrote a skript to quickly create short preview clips from vides I recorded on timestamps that I found worth checking out later for cutting.
My file with the timestamps is written like this</p>
<pre><code>FILE_NAME1#MM:SS MM:SS
FILE_NAME2#MM:SS MM:SS MM:SS MM:SS
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,458 | bash | # bash variable changes in loop with ffmpeg
I wrote a skript to quickly create short preview clips from vides I recorded on timestamps that I found worth checking out later for cutting.
My file with the timestamps is written like this
```
FILE_NAME1#MM:SS MM:SS
FILE_NAME2#MM:SS MM:SS MM:SS MM:SS
```
example:
```
MA... | `ffmpeg` reads from standard input, consuming data from `$1` that was intended for the `read` command at the top of the loop. Redirect its standard input from `/dev/null`:
```
while IFS="#" read file timestamps; do
filename="$file.MP4"
for time in $timestamps; do
ffmpeg -ss 00:${time}.0 -i "orig/${filename}" \... |
49399984 | Parsing .ini file in bash | 7 | 2018-03-21 06:53:19 | <p>I have a below properties file and would like to parse it as mentioned below. Please help in doing this.</p>
<p>.ini file which I created :</p>
<pre><code>[Machine1]
app=version1
[Machine2]
app=version1
app=version2
[Machine3]
app=version1
app=version3
</code></pre>
<p>I am looking for a solution in which ... | 12,290 | 8,000,076 | 2024-02-27 17:11:40 | 49,400,353 | 13 | 2018-03-21 07:17:25 | 3,030,305 | 2018-03-21 07:48:52 | https://stackoverflow.com/q/49399984 | https://stackoverflow.com/a/49400353 | <p>Try:</p>
<pre><code>$ awk '/\[/{prefix=$0; next} $1{print prefix $0}' file.ini
[Machine1]app=version1
[Machine2]app=version1
[Machine2]app=version2
[Machine3]app=version1
[Machine3]app=version3
</code></pre>
<p>How it works</p>
<ul>
<li><p><code>/\[/{prefix=$0; next}</code></p>
<p>If any line begins with <code>[... | <p>Try:</p> <pre><code>$ awk '/\[/{prefix=$0; next} $1{print prefix $0}' file.ini [Machine1]app=version1 [Machine2]app=version1 [Machine2]app=version2 [Machine3]app=version1 [Machine3]app=version3 </code></pre> <p>How it works</p> <ul> <li><p><code>/\[/{prefix=$0; next}</code></p> <p>If any line begins with <code>[... | 387, 996 | bash, ini | <h1>Parsing .ini file in bash</h1>
<p>I have a below properties file and would like to parse it as mentioned below. Please help in doing this.</p>
<p>.ini file which I created :</p>
<pre><code>[Machine1]
app=version1
[Machine2]
app=version1
app=version2
[Machine3]
app=version1
app=version3
</code></pre>
<p>I ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,459 | bash | # Parsing .ini file in bash
I have a below properties file and would like to parse it as mentioned below. Please help in doing this.
.ini file which I created :
```
[Machine1]
app=version1
[Machine2]
app=version1
app=version2
[Machine3]
app=version1
app=version3
```
I am looking for a solution in which ini f... | Try:
```
$ awk '/\[/{prefix=$0; next} $1{print prefix $0}' file.ini
[Machine1]app=version1
[Machine2]app=version1
[Machine2]app=version2
[Machine3]app=version1
[Machine3]app=version3
```
How it works
- `/\[/{prefix=$0; next}`
If any line begins with `[`, we save the line in the variable `prefix` and then we skip ... |
48322960 | How to convert a string to a stream object in Powershell? | 7 | 2018-01-18 13:52:32 | <p>I want to make a string fit for consumption as a stream, by e.g. <code>Get-FileHash</code> command (using its <code>-InputStream</code> parameter).</p>
<p>The reason I want this is that I need to digest a string, and not contents of a file. I do not want to temporarily store said string in a file just to digest it.<... | 9,985 | 254,343 | 2022-10-07 10:12:51 | 48,323,225 | 13 | 2018-01-18 14:08:27 | 6,579,295 | 2018-01-18 14:08:27 | https://stackoverflow.com/q/48322960 | https://stackoverflow.com/a/48323225 | <p>You can use some .NET functions:</p>
<pre><code>$stream = [IO.MemoryStream]::new([Text.Encoding]::UTF8.GetBytes("Quick brown fox jumps over the lazy dog."))
Get-FileHash -InputStream $stream -Algorithm SHA512
</code></pre>
| <p>You can use some .NET functions:</p> <pre><code>$stream = [IO.MemoryStream]::new([Text.Encoding]::UTF8.GetBytes("Quick brown fox jumps over the lazy dog.")) Get-FileHash -InputStream $stream -Algorithm SHA512 </code></pre> | 526 | powershell | <h1>How to convert a string to a stream object in Powershell?</h1>
<p>I want to make a string fit for consumption as a stream, by e.g. <code>Get-FileHash</code> command (using its <code>-InputStream</code> parameter).</p>
<p>The reason I want this is that I need to digest a string, and not contents of a file. I do not ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,460 | bash | # How to convert a string to a stream object in Powershell?
I want to make a string fit for consumption as a stream, by e.g. `Get-FileHash` command (using its `-InputStream` parameter).
The reason I want this is that I need to digest a string, and not contents of a file. I do not want to temporarily store said string... | You can use some .NET functions:
```
$stream = [IO.MemoryStream]::new([Text.Encoding]::UTF8.GetBytes("Quick brown fox jumps over the lazy dog."))
Get-FileHash -InputStream $stream -Algorithm SHA512
``` |
46400234 | Encrypt String with the Machine Key in Powershell? | 7 | 2017-09-25 08:00:55 | <p>I want to Encrypt a password in Powershell to save it to a file. The <code>ConvertTo-SecureString</code> uses the current credentials to encrypt and decrypt the string.</p>
<p>I want to encrypt it with the local machine key (probably the SYSTEM account credentials) so every username on the same computer will be abl... | 4,272 | 288,280 | 2017-09-25 17:28:13 | 46,400,268 | 13 | 2017-09-25 08:02:49 | 288,280 | 2017-09-25 08:02:49 | https://stackoverflow.com/q/46400234 | https://stackoverflow.com/a/46400268 | <p>It's possible to use the <code>[Security.Cryptography.ProtectedData]::Protect</code> function along with <code>[Security.Cryptography.DataProtectionScope]::LocalMachine</code> as the entity.</p>
<p>Code example:</p>
<pre><code>Function Encrypt-WithMachineKey($s) {
Add-Type -AssemblyName System.Security
$b... | <p>It's possible to use the <code>[Security.Cryptography.ProtectedData]::Protect</code> function along with <code>[Security.Cryptography.DataProtectionScope]::LocalMachine</code> as the entity.</p> <p>Code example:</p> <pre><code>Function Encrypt-WithMachineKey($s) { Add-Type -AssemblyName System.Security $b... | 526, 2387, 33800, 108010 | cryptography, password-encryption, powershell, powershell-5.0 | <h1>Encrypt String with the Machine Key in Powershell?</h1>
<p>I want to Encrypt a password in Powershell to save it to a file. The <code>ConvertTo-SecureString</code> uses the current credentials to encrypt and decrypt the string.</p>
<p>I want to encrypt it with the local machine key (probably the SYSTEM account cre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,461 | bash | # Encrypt String with the Machine Key in Powershell?
I want to Encrypt a password in Powershell to save it to a file. The `ConvertTo-SecureString` uses the current credentials to encrypt and decrypt the string.
I want to encrypt it with the local machine key (probably the SYSTEM account credentials) so every username... | It's possible to use the `[Security.Cryptography.ProtectedData]::Protect` function along with `[Security.Cryptography.DataProtectionScope]::LocalMachine` as the entity.
Code example:
```
Function Encrypt-WithMachineKey($s) {
Add-Type -AssemblyName System.Security
$bytes = [System.Text.Encoding]::Unicode.GetB... |
45744569 | how to handle bash with multiple arguments for multiple options | 7 | 2017-08-17 20:37:34 | <p>I need to download chart data from poloniex rest client with multiple options using bash only.
I tried getopts but couldn't really find a way to use mutliple options with multiple parameters.</p>
<p>here is what I want to achieve</p>
<pre><code>./getdata.sh -c currency1 currency2 ... -p period1 period2 ...
</code... | 38,984 | 944,768 | 2017-08-17 23:59:48 | 45,744,742 | 13 | 2017-08-17 20:49:19 | 5,395,709 | 2017-08-17 23:59:48 | https://stackoverflow.com/q/45744569 | https://stackoverflow.com/a/45744742 | <p>Could something like this work for you?</p>
<pre><code>#!/bin/bash
while getopts ":a:p:" opt; do
case $opt in
a) arg1="$OPTARG"
;;
p) arg2="$OPTARG"
;;
\?) echo "Invalid option -$OPTARG" >&2
;;
esac
done
printf "Argument 1 is %s\n" "$arg1"
printf "Argument 2 is %s\n" "$arg2"
</c... | <p>Could something like this work for you?</p> <pre><code>#!/bin/bash while getopts ":a:p:" opt; do case $opt in a) arg1="$OPTARG" ;; p) arg2="$OPTARG" ;; \?) echo "Invalid option -$OPTARG" >&2 ;; esac done printf "Argument 1 is %s\n" "$arg1" printf "Argument 2 is %s\n" "$arg2" </c... | 58, 369, 387, 120795 | bash, linux, macos, poloniex | <h1>how to handle bash with multiple arguments for multiple options</h1>
<p>I need to download chart data from poloniex rest client with multiple options using bash only.
I tried getopts but couldn't really find a way to use mutliple options with multiple parameters.</p>
<p>here is what I want to achieve</p>
<pre><c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,462 | bash | # how to handle bash with multiple arguments for multiple options
I need to download chart data from poloniex rest client with multiple options using bash only.
I tried getopts but couldn't really find a way to use mutliple options with multiple parameters.
here is what I want to achieve
```
./getdata.sh -c currency... | Could something like this work for you?
```
#!/bin/bash
while getopts ":a:p:" opt; do
case $opt in
a) arg1="$OPTARG"
;;
p) arg2="$OPTARG"
;;
\?) echo "Invalid option -$OPTARG" >&2
;;
esac
done
printf "Argument 1 is %s\n" "$arg1"
printf "Argument 2 is %s\n" "$arg2"
```
You can then call y... |
45350837 | cut : use "/" as a delimiter | 7 | 2017-07-27 12:28:24 | <p>I am trying to use the cut command in my bash script. I need to get the name of a rpm package containing 'sys' in its name, without its full path. So I tried this:</p>
<pre><code>packageName=$(find temp/noarch/ -name '*sys*noarch.rpm' | cut -d "\/" -f 3)
</code></pre>
<p>I thought this way could return the package... | 9,943 | 8,343,342 | 2019-05-17 22:14:31 | 45,350,955 | 13 | 2017-07-27 12:33:49 | 1,030,675 | 2017-07-27 12:33:49 | https://stackoverflow.com/q/45350837 | https://stackoverflow.com/a/45350955 | <p><code>"\/"</code> doesn't expand to <code>/</code>, so <code>cut</code> complains:</p>
<pre><code>cut: the delimiter must be a single character
</code></pre>
<p>Use plain <code>/</code> instead:</p>
<pre><code>packageName=$(find temp/noarch/ -name '*sys*noarch.rpm' | cut -d/ -f3)
</code></pre>
| <p><code>"\/"</code> doesn't expand to <code>/</code>, so <code>cut</code> complains:</p> <pre><code>cut: the delimiter must be a single character </code></pre> <p>Use plain <code>/</code> instead:</p> <pre><code>packageName=$(find temp/noarch/ -name '*sys*noarch.rpm' | cut -d/ -f3) </code></pre> | 387, 4257 | bash, cut | <h1>cut : use "/" as a delimiter</h1>
<p>I am trying to use the cut command in my bash script. I need to get the name of a rpm package containing 'sys' in its name, without its full path. So I tried this:</p>
<pre><code>packageName=$(find temp/noarch/ -name '*sys*noarch.rpm' | cut -d "\/" -f 3)
</code></pre>
<p>I tho... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,463 | bash | # cut : use "/" as a delimiter
I am trying to use the cut command in my bash script. I need to get the name of a rpm package containing 'sys' in its name, without its full path. So I tried this:
```
packageName=$(find temp/noarch/ -name '*sys*noarch.rpm' | cut -d "\/" -f 3)
```
I thought this way could return the pa... | `"\/"` doesn't expand to `/`, so `cut` complains:
```
cut: the delimiter must be a single character
```
Use plain `/` instead:
```
packageName=$(find temp/noarch/ -name '*sys*noarch.rpm' | cut -d/ -f3)
``` |
44034124 | Escaping slash "\" in grep | 7 | 2017-05-17 20:21:25 | <p>I have file with line: </p>
<pre><code>"H:\Check\WP_20140511_029.mp4"
</code></pre>
<p>along with other lines. I want to remove such lines indicating directory at <code>H:\Check</code>. I tried</p>
<pre><code>grep -v ".*H:\\Check.*" testout.txt > testout2.txt
</code></pre>
<p>But it did not delete those lines... | 18,995 | 1,317,018 | 2017-05-20 07:39:07 | 44,034,170 | 13 | 2017-05-17 20:25:15 | 548,225 | 2017-05-17 20:35:35 | https://stackoverflow.com/q/44034124 | https://stackoverflow.com/a/44034170 | <p>You can use:</p>
<pre><code>grep -v 'H:\\Check' testout.txt > testout2.txt
</code></pre>
<p>It is important to use single quotes to avoid excessive escaping of backslash.</p>
<p>Using double quotes equivalent command will be this:</p>
<pre><code>grep -v "H:\\\Check" testout.txt > testout2.txt
</code></pre>... | <p>You can use:</p> <pre><code>grep -v 'H:\\Check' testout.txt > testout2.txt </code></pre> <p>It is important to use single quotes to avoid excessive escaping of backslash.</p> <p>Using double quotes equivalent command will be this:</p> <pre><code>grep -v "H:\\\Check" testout.txt > testout2.txt </code></pre>... | 18, 58, 387, 390, 1271 | bash, grep, linux, regex, shell | <h1>Escaping slash "\" in grep</h1>
<p>I have file with line: </p>
<pre><code>"H:\Check\WP_20140511_029.mp4"
</code></pre>
<p>along with other lines. I want to remove such lines indicating directory at <code>H:\Check</code>. I tried</p>
<pre><code>grep -v ".*H:\\Check.*" testout.txt > testout2.txt
</code></pre>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,464 | bash | # Escaping slash "\" in grep
I have file with line:
```
"H:\Check\WP_20140511_029.mp4"
```
along with other lines. I want to remove such lines indicating directory at `H:\Check`. I tried
```
grep -v ".*H:\\Check.*" testout.txt > testout2.txt
```
But it did not delete those lines. Whats wrong with my regex `.*H:\\C... | You can use:
```
grep -v 'H:\\Check' testout.txt > testout2.txt
```
It is important to use single quotes to avoid excessive escaping of backslash.
Using double quotes equivalent command will be this:
```
grep -v "H:\\\Check" testout.txt > testout2.txt
```
---
**EDIT:**
`\\` in double quotes is equivalent of a si... |
43413203 | How to pass all but the first argument to a second bash script? | 7 | 2017-04-14 14:07:37 | <p>I'm trying to write a bash script that executes another bash script with all but the first argument, so I can't use: </p>
<blockquote>
<p>bash abc.sh "$@"</p>
</blockquote>
<p>because it will also pass the first argument which I don't want. How can i remove the first argument?</p>
| 1,943 | 7,867,665 | 2017-04-14 14:20:28 | 43,413,218 | 13 | 2017-04-14 14:08:27 | 1,084,774 | 2017-04-14 14:20:28 | https://stackoverflow.com/q/43413203 | https://stackoverflow.com/a/43413218 | <p>You can remove the first argument with a <code>shift</code>:</p>
<pre><code>shift #same as: shift 1
bash abc.sh "$@"
</code></pre>
<p>(In <code>bash</code>, <code>ksh</code>, and <code>zsh</code>, you can also use <code>"${@:2}"</code> without modifying the <code>"$@"</code> array, but <code>shift</code> will work... | <p>You can remove the first argument with a <code>shift</code>:</p> <pre><code>shift #same as: shift 1 bash abc.sh "$@" </code></pre> <p>(In <code>bash</code>, <code>ksh</code>, and <code>zsh</code>, you can also use <code>"${@:2}"</code> without modifying the <code>"$@"</code> array, but <code>shift</code> will work... | 387 | bash | <h1>How to pass all but the first argument to a second bash script?</h1>
<p>I'm trying to write a bash script that executes another bash script with all but the first argument, so I can't use: </p>
<blockquote>
<p>bash abc.sh "$@"</p>
</blockquote>
<p>because it will also pass the first argument which I don't want.... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,465 | bash | # How to pass all but the first argument to a second bash script?
I'm trying to write a bash script that executes another bash script with all but the first argument, so I can't use:
> bash abc.sh "$@"
because it will also pass the first argument which I don't want. How can i remove the first argument? | You can remove the first argument with a `shift`:
```
shift #same as: shift 1
bash abc.sh "$@"
```
(In `bash`, `ksh`, and `zsh`, you can also use `"${@:2}"` without modifying the `"$@"` array, but `shift` will work in any POSIX shell.) |
41871596 | Why isn't tilde (~) expanding inside double quotes? | 7 | 2017-01-26 10:38:09 | <p>I want to check whether or not the hidden <code>.git</code> folder exists. First thought was to use:</p>
<pre><code>if [ -d "~/.git" ]; then
echo "Do stuff"
fi
</code></pre>
<p>But the <code>-d</code> apparently does not look for hidden folders.</p>
| 1,554 | 4,342,608 | 2023-01-17 20:52:29 | 41,871,651 | 13 | 2017-01-26 10:41:03 | 1,983,854 | 2023-01-17 20:52:29 | https://stackoverflow.com/q/41871596 | https://stackoverflow.com/a/41871651 | <p>The problem has to do with the tilde being within double quotes.</p>
<p>To get it expanded, you need to put the tilde outside the quotes:</p>
<pre><code>if [ -d ~/".git" ]; then # note tilde outside double quotes!
echo "Do stuff"
fi
</code></pre>
<p>Or, alternatively, as commented below by h... | <p>The problem has to do with the tilde being within double quotes.</p> <p>To get it expanded, you need to put the tilde outside the quotes:</p> <pre><code>if [ -d ~/".git" ]; then # note tilde outside double quotes! echo "Do stuff" fi </code></pre> <p>Or, alternatively, as commented below by h... | 387, 40596, 63342 | bash, double-quotes, tilde-expansion | <h1>Why isn't tilde (~) expanding inside double quotes?</h1>
<p>I want to check whether or not the hidden <code>.git</code> folder exists. First thought was to use:</p>
<pre><code>if [ -d "~/.git" ]; then
echo "Do stuff"
fi
</code></pre>
<p>But the <code>-d</code> apparently does not look for hidden folders.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,466 | bash | # Why isn't tilde (~) expanding inside double quotes?
I want to check whether or not the hidden `.git` folder exists. First thought was to use:
```
if [ -d "~/.git" ]; then
echo "Do stuff"
fi
```
But the `-d` apparently does not look for hidden folders. | The problem has to do with the tilde being within double quotes.
To get it expanded, you need to put the tilde outside the quotes:
```
if [ -d ~/".git" ]; then # note tilde outside double quotes!
echo "Do stuff"
fi
```
Or, alternatively, as commented below by hek2mgl, use `$HOME` instead of `~`:
```
if [ -d "$... |
41179883 | "Are you sure?" via a messagebox in powershell | 7 | 2016-12-16 08:08:58 | <p>Goodmorning developers,</p>
<p>I am trying to make a delete function in powershell. I want to have something like this:</p>
<pre><code> function deleteEnv(){
$result = [System.Windows.Forms.MessageBox]::Show('Are you sure?''Yes', 'No' 'Info')
if(yes){
//Delete
}
else {
//do nothing
}
}
</code></pre>... | 15,271 | 6,280,280 | 2024-02-26 09:44:16 | 41,179,942 | 13 | 2016-12-16 08:14:08 | 6,067,741 | 2016-12-16 08:14:08 | https://stackoverflow.com/q/41179883 | https://stackoverflow.com/a/41179942 | <pre><code>[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
$result = [System.Windows.Forms.MessageBox]::Show('Are you sure?' , "Info" , 4)
if ($result -eq 'Yes') {
do stuff
}
</code></pre>
<p>Additional reading: <a href="http://powershell-tips.blogspot.com.by/2012/02/display-messagebox-wi... | <pre><code>[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") $result = [System.Windows.Forms.MessageBox]::Show('Are you sure?' , "Info" , 4) if ($result -eq 'Yes') { do stuff } </code></pre> <p>Additional reading: <a href="http://powershell-tips.blogspot.com.by/2012/02/display-messagebox-wi... | 49, 526, 1117 | forms, powershell, xaml | <h1>"Are you sure?" via a messagebox in powershell</h1>
<p>Goodmorning developers,</p>
<p>I am trying to make a delete function in powershell. I want to have something like this:</p>
<pre><code> function deleteEnv(){
$result = [System.Windows.Forms.MessageBox]::Show('Are you sure?''Yes', 'No' 'Info')
if(yes)... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,467 | bash | # "Are you sure?" via a messagebox in powershell
Goodmorning developers,
I am trying to make a delete function in powershell. I want to have something like this:
```
function deleteEnv(){
$result = [System.Windows.Forms.MessageBox]::Show('Are you sure?''Yes', 'No' 'Info')
if(yes){
//Delete
}
else {
/... | ```
[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
$result = [System.Windows.Forms.MessageBox]::Show('Are you sure?' , "Info" , 4)
if ($result -eq 'Yes') {
do stuff
}
```
Additional reading: <http://powershell-tips.blogspot.com.by/2012/02/display-messagebox-with-powershell.html> |
38469234 | How to Source all powershell scripts from a directory | 7 | 2016-07-19 21:59:23 | <p>Can not dot source all PowerShell scripts from directory
tried:</p>
<pre><code>. .\*.ps1
</code></pre>
<p>Returns this:</p>
<pre><code>> : The term '.\*.ps1' is not recognized as the name of a cmdlet,
> function, script file, or operable program. Check the spelling of the
> name, or if a path was includ... | 6,734 | 1,179,340 | 2018-06-25 20:05:17 | 38,469,310 | 13 | 2016-07-19 22:06:14 | 712,649 | 2018-06-25 20:05:17 | https://stackoverflow.com/q/38469234 | https://stackoverflow.com/a/38469310 | <p>Use <code>Get-ChildItem</code> to grab all <code>*.ps1</code> files, then loop through them with <code>ForEach-Object</code> and dot-source them individually</p>
<pre><code>$Path = "C:\Scripts\Directory"
Get-ChildItem -Path $Path -Filter *.ps1 |ForEach-Object {
. $_.FullName
}
</code></pre>
<hr>
<p>If you put... | <p>Use <code>Get-ChildItem</code> to grab all <code>*.ps1</code> files, then loop through them with <code>ForEach-Object</code> and dot-source them individually</p> <pre><code>$Path = "C:\Scripts\Directory" Get-ChildItem -Path $Path -Filter *.ps1 |ForEach-Object { . $_.FullName } </code></pre> <hr> <p>If you put... | 526 | powershell | <h1>How to Source all powershell scripts from a directory</h1>
<p>Can not dot source all PowerShell scripts from directory
tried:</p>
<pre><code>. .\*.ps1
</code></pre>
<p>Returns this:</p>
<pre><code>> : The term '.\*.ps1' is not recognized as the name of a cmdlet,
> function, script file, or operable progra... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,468 | bash | # How to Source all powershell scripts from a directory
Can not dot source all PowerShell scripts from directory
tried:
```
. .\*.ps1
```
Returns this:
```
> : The term '.\*.ps1' is not recognized as the name of a cmdlet,
> function, script file, or operable program. Check the spelling of the
> name, or if a path ... | Use `Get-ChildItem` to grab all `*.ps1` files, then loop through them with `ForEach-Object` and dot-source them individually
```
$Path = "C:\Scripts\Directory"
Get-ChildItem -Path $Path -Filter *.ps1 |ForEach-Object {
. $_.FullName
}
```
---
If you put the above in a script, and the script itself is located in `... |
38316422 | How to capture actual response code and response body with HTTPie in bash script? | 7 | 2016-07-11 21:21:11 | <p>I have a bash script to call several APIs using HTTPie. I want to capture both the response body AND the HTTP status code.</p>
<p>Here is the best I have managed so far:</p>
<pre><code>rspBody=$( http $URL --check-status --ignore-stdin )
statusCode=$?
</code></pre>
<p>Command substitution lets me get the body, an... | 6,281 | 6,576,482 | 2020-04-22 11:03:53 | 38,338,811 | 13 | 2016-07-12 21:01:19 | 380,625 | 2019-07-19 09:53:17 | https://stackoverflow.com/q/38316422 | https://stackoverflow.com/a/38338811 | <p>There's no ready-made solution as such for this but it's achievable with a bit of scripting. For example:</p>
<pre><code>STATUS=$(http -hdo ./body httpbin.org/get 2>&1 | grep HTTP/ | cut -d ' ' -f 2)
BODY=$(cat ./body)
rm ./body
echo $STATUS
# 200
echo $BODY
# { "args": {}, "headers": { "Accept": "*/*", "Ac... | <p>There's no ready-made solution as such for this but it's achievable with a bit of scripting. For example:</p> <pre><code>STATUS=$(http -hdo ./body httpbin.org/get 2>&1 | grep HTTP/ | cut -d ' ' -f 2) BODY=$(cat ./body) rm ./body echo $STATUS # 200 echo $BODY # { "args": {}, "headers": { "Accept": "*/*", "Ac... | 387, 84690 | bash, httpie | <h1>How to capture actual response code and response body with HTTPie in bash script?</h1>
<p>I have a bash script to call several APIs using HTTPie. I want to capture both the response body AND the HTTP status code.</p>
<p>Here is the best I have managed so far:</p>
<pre><code>rspBody=$( http $URL --check-status --i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 10,469 | bash | # How to capture actual response code and response body with HTTPie in bash script?
I have a bash script to call several APIs using HTTPie. I want to capture both the response body AND the HTTP status code.
Here is the best I have managed so far:
```
rspBody=$( http $URL --check-status --ignore-stdin )
statusCode=$?... | There's no ready-made solution as such for this but it's achievable with a bit of scripting. For example:
```
STATUS=$(http -hdo ./body httpbin.org/get 2>&1 | grep HTTP/ | cut -d ' ' -f 2)
BODY=$(cat ./body)
rm ./body
echo $STATUS
# 200
echo $BODY
# { "args": {}, "headers": { "Accept": "*/*", "Accept-Encoding": "iden... |
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