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40680812 | MySQL Git Bash winpty mysqldump stdout is not a tty and stdin is not a tty | 18 | 2016-11-18 15:32:46 | <p>Please help with MySQL Git Bash winpty mysqldump. "winpty mysqldump" is not working in Git Bash. Here the details of the error:</p>
<p><strong>Git Bash</strong></p>
<pre><code>$ winpty mysqldump -u root -p employeedb > "E:\Working\SQL\MySQL\MySQL-Queries\mysqldump\SQL-dump\employeedb_backup.sql"
stdout is not a... | 16,267 | 5,264,370 | 2018-01-31 05:55:02 | 40,791,559 | 14 | 2016-11-24 16:55:39 | 6,311,905 | 2017-06-16 23:48:31 | https://stackoverflow.com/q/40680812 | https://stackoverflow.com/a/40791559 | <p>The error is actually from <code>winpty</code> because you are trying to redirect output to a file and it expects a terminal for interactive use.</p>
<p>Normally, native Git bash commands like <code>git</code>, <code>ssh</code> and all output redirection like <code>node --version | clip</code> should work without <... | <p>The error is actually from <code>winpty</code> because you are trying to redirect output to a file and it expects a terminal for interactive use.</p> <p>Normally, native Git bash commands like <code>git</code>, <code>ssh</code> and all output redirection like <code>node --version | clip</code> should work without <... | 21, 61874 | git-bash, mysql | <h1>MySQL Git Bash winpty mysqldump stdout is not a tty and stdin is not a tty</h1>
<p>Please help with MySQL Git Bash winpty mysqldump. "winpty mysqldump" is not working in Git Bash. Here the details of the error:</p>
<p><strong>Git Bash</strong></p>
<pre><code>$ winpty mysqldump -u root -p employeedb > "E:\Worki... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,566 | bash | # MySQL Git Bash winpty mysqldump stdout is not a tty and stdin is not a tty
Please help with MySQL Git Bash winpty mysqldump. "winpty mysqldump" is not working in Git Bash. Here the details of the error:
**Git Bash**
```
$ winpty mysqldump -u root -p employeedb > "E:\Working\SQL\MySQL\MySQL-Queries\mysqldump\SQL-du... | The error is actually from `winpty` because you are trying to redirect output to a file and it expects a terminal for interactive use.
Normally, native Git bash commands like `git`, `ssh` and all output redirection like `node --version | clip` should work without `winpty`.
These `mysql` commands are different in that... |
38090455 | What is the simplest way to make matplotlib in OSX work in a virtual environment? | 18 | 2016-06-29 04:34:14 | <p>I just discovered that <code>matplotlib</code> has issue with virtual environments. I tried the solutions in the <a href="http://matplotlib.org/faq/virtualenv_faq.html">FAQs</a> but they didn't work. An ideal solution should only involve <code>pip</code> commands, but it might be hard or unrealistic to request that.... | 8,393 | 1,601,580 | 2018-05-17 12:10:25 | 38,161,572 | 14 | 2016-07-02 15:15:20 | 1,490,091 | 2017-06-03 00:27:12 | https://stackoverflow.com/q/38090455 | https://stackoverflow.com/a/38161572 | <p><strong>Update:</strong></p>
<p>With Python3, you can use the built-in implementation of <code>virtualenv</code> via <code>-m venv</code>:</p>
<pre><code>python -m venv <name of virtualenv>
source <name of virtualenv>/bin/activate
</code></pre>
<p>Python3's builtin implementation builds the virtualenv... | <p><strong>Update:</strong></p> <p>With Python3, you can use the built-in implementation of <code>virtualenv</code> via <code>-m venv</code>:</p> <pre><code>python -m venv <name of virtualenv> source <name of virtualenv>/bin/activate </code></pre> <p>Python3's builtin implementation builds the virtualenv... | 16, 369, 387, 7979 | bash, macos, matplotlib, python | <h1>What is the simplest way to make matplotlib in OSX work in a virtual environment?</h1>
<p>I just discovered that <code>matplotlib</code> has issue with virtual environments. I tried the solutions in the <a href="http://matplotlib.org/faq/virtualenv_faq.html">FAQs</a> but they didn't work. An ideal solution should o... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,567 | bash | # What is the simplest way to make matplotlib in OSX work in a virtual environment?
I just discovered that `matplotlib` has issue with virtual environments. I tried the solutions in the [FAQs](http://matplotlib.org/faq/virtualenv_faq.html) but they didn't work. An ideal solution should only involve `pip` commands, but... | **Update:**
With Python3, you can use the built-in implementation of `virtualenv` via `-m venv`:
```
python -m venv <name of virtualenv>
source <name of virtualenv>/bin/activate
```
Python3's builtin implementation builds the virtualenv such that Python is set up as a framework, so no need to configure anything to g... |
19950620 | how to hide password in command line with **** and get the value into .bat file and .sh file | 18 | 2013-11-13 09:56:01 | <p>My .bat file command to get user input from command line is</p>
<pre><code>set /p weblogicpassword=Enter weblogic password:%=%
</code></pre>
<p>My .sh file command to get user input from bash script is </p>
<pre><code>echo -n "Enter weblogic password: "
read weblogicpassword
</code></pre>
<p>Now when we enter so... | 87,267 | 2,878,317 | 2017-01-21 08:28:09 | 19,950,690 | 14 | 2013-11-13 09:59:38 | 551,045 | 2013-11-13 11:07:26 | https://stackoverflow.com/q/19950620 | https://stackoverflow.com/a/19950690 | <p>For bash its <code>read -s</code>. </p>
<p><code>-s Silent mode. If input is coming from a terminal, characters are not echoed.</code></p>
<p>For batch it seems to be more complicated.</p>
<p>Read about it here:
<a href="https://stackoverflow.com/questions/664957/can-i-mask-an-input-text-in-a-bat-file">Can I mask... | <p>For bash its <code>read -s</code>. </p> <p><code>-s Silent mode. If input is coming from a terminal, characters are not echoed.</code></p> <p>For batch it seems to be more complicated.</p> <p>Read about it here: <a href="https://stackoverflow.com/questions/664957/can-i-mask-an-input-text-in-a-bat-file">Can I mask... | 387, 2631, 7002, 9938 | bash, batch-file, cmd, command-prompt | <h1>how to hide password in command line with **** and get the value into .bat file and .sh file</h1>
<p>My .bat file command to get user input from command line is</p>
<pre><code>set /p weblogicpassword=Enter weblogic password:%=%
</code></pre>
<p>My .sh file command to get user input from bash script is </p>
<pre>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,568 | bash | # how to hide password in command line with **** and get the value into .bat file and .sh file
My .bat file command to get user input from command line is
```
set /p weblogicpassword=Enter weblogic password:%=%
```
My .sh file command to get user input from bash script is
```
echo -n "Enter weblogic password: "
rea... | For bash its `read -s`.
`-s Silent mode. If input is coming from a terminal, characters are not echoed.`
For batch it seems to be more complicated.
Read about it here:
[Can I mask an input text in a bat file](https://stackoverflow.com/questions/664957/can-i-mask-an-input-text-in-a-bat-file) |
5896223 | Using find to delete all subdirectories (and their files) | 18 | 2011-05-05 10:28:14 | <p>I'm sure this is straight forward and answered somewhere, but I didn't manage to find what I was looking for. Basically, I'm trying to run a cron script to clear the contents of a given directory every 7 days. So far I have tried the following,</p>
<pre><code>find /myDir -mtime 7 -exec rm -rf {} \;
</code></pre>
... | 16,349 | 706,380 | 2017-06-15 13:43:26 | 5,896,314 | 14 | 2011-05-05 10:34:25 | 719,147 | 2011-05-05 10:34:25 | https://stackoverflow.com/q/5896223 | https://stackoverflow.com/a/5896314 | <p>Try:</p>
<pre><code>find /myDir -mindepth 1 -mtime 7 -exec rm -rf {} \;
</code></pre>
| <p>Try:</p> <pre><code>find /myDir -mindepth 1 -mtime 7 -exec rm -rf {} \; </code></pre> | 387, 578, 5610, 10193, 34708 | bash, find, recursion, rm, subdirectory | <h1>Using find to delete all subdirectories (and their files)</h1>
<p>I'm sure this is straight forward and answered somewhere, but I didn't manage to find what I was looking for. Basically, I'm trying to run a cron script to clear the contents of a given directory every 7 days. So far I have tried the following,</p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,569 | bash | # Using find to delete all subdirectories (and their files)
I'm sure this is straight forward and answered somewhere, but I didn't manage to find what I was looking for. Basically, I'm trying to run a cron script to clear the contents of a given directory every 7 days. So far I have tried the following,
```
find /myD... | Try:
```
find /myDir -mindepth 1 -mtime 7 -exec rm -rf {} \;
``` |
5306604 | how to make this "action-packed, random data" being echoed in a terminal? | 18 | 2011-03-15 01:43:00 | <p>OK, this isn't really a question to achieve anything practical, but still it is a serious question and I hope it will be taken seriously and mods won't punish me for this :)</p>
<p>I'm sure majority of you have seen some good action movie, where CIA or FBI or hackers or any other "pc nerds" are "retrieving some inf... | 7,817 | 616,855 | 2016-01-02 00:11:24 | 5,306,613 | 14 | 2011-03-15 01:45:00 | 26,428 | 2011-03-16 02:32:07 | https://stackoverflow.com/q/5306604 | https://stackoverflow.com/a/5306613 | <p>There's a utility call <a href="http://linux.die.net/man/1/script"><code>script</code></a> (ironically) that does what you're talking about. It can even record timing data so the playback is done at the same rate the original actions were performed.</p>
<p>To start recording and capture timing data:</p>
<pre><code... | <p>There's a utility call <a href="http://linux.die.net/man/1/script"><code>script</code></a> (ironically) that does what you're talking about. It can even record timing data so the playback is done at the same rate the original actions were performed.</p> <p>To start recording and capture timing data:</p> <pre><code... | 58, 390, 391, 549 | linux, shell, terminal, ubuntu | <h1>how to make this "action-packed, random data" being echoed in a terminal?</h1>
<p>OK, this isn't really a question to achieve anything practical, but still it is a serious question and I hope it will be taken seriously and mods won't punish me for this :)</p>
<p>I'm sure majority of you have seen some good action ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,570 | bash | # how to make this "action-packed, random data" being echoed in a terminal?
OK, this isn't really a question to achieve anything practical, but still it is a serious question and I hope it will be taken seriously and mods won't punish me for this :)
I'm sure majority of you have seen some good action movie, where CIA... | There's a utility call [`script`](http://linux.die.net/man/1/script) (ironically) that does what you're talking about. It can even record timing data so the playback is done at the same rate the original actions were performed.
To start recording and capture timing data:
```
$ script -t script.out 2>timing.out
```
W... |
46236580 | How to enable shell command completion for gcloud? | 17 | 2017-09-15 09:44:32 | <p>I'm trying to install the Google Cloud SDK on a Mac (following <a href="https://cloud.google.com/sdk/docs/quickstart-mac-os-x" rel="noreferrer">https://cloud.google.com/sdk/docs/quickstart-mac-os-x</a>), using the <code>install.sh</code> script:</p>
<pre><code>~/Downloads$ ./google-cloud-sdk/install.sh
</code></pre... | 27,667 | 995,862 | 2019-07-11 10:57:15 | 46,236,915 | 14 | 2017-09-15 10:01:12 | 995,862 | 2017-09-15 10:01:12 | https://stackoverflow.com/q/46236580 | https://stackoverflow.com/a/46236915 | <p>The trick was to run the <code>install.sh</code> using <code>sudo</code> as described in the update. After that I needed to restart the terminal (as described in the instructions) for the changes to take effect.</p>
| <p>The trick was to run the <code>install.sh</code> using <code>sudo</code> as described in the update. After that I needed to restart the terminal (as described in the instructions) for the changes to take effect.</p> | 387, 390, 99304 | bash, google-cloud-platform, shell | <h1>How to enable shell command completion for gcloud?</h1>
<p>I'm trying to install the Google Cloud SDK on a Mac (following <a href="https://cloud.google.com/sdk/docs/quickstart-mac-os-x" rel="noreferrer">https://cloud.google.com/sdk/docs/quickstart-mac-os-x</a>), using the <code>install.sh</code> script:</p>
<pre><... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,571 | bash | # How to enable shell command completion for gcloud?
I'm trying to install the Google Cloud SDK on a Mac (following <https://cloud.google.com/sdk/docs/quickstart-mac-os-x>), using the `install.sh` script:
```
~/Downloads$ ./google-cloud-sdk/install.sh
```
In the logged output, I see the following instructions:
```
... | The trick was to run the `install.sh` using `sudo` as described in the update. After that I needed to restart the terminal (as described in the instructions) for the changes to take effect. |
26809898 | Invoke MSYS2 Shell from Command Prompt or PowerShell | 17 | 2014-11-07 20:53:50 | <p>Starting from Command Prompt or PowerShell (either is fine; I can figure out how to do the other given one), how can I invoke the MSYS2 shell to run a command?</p>
<h3>More specific issue</h3>
<p>I'm including this information to avoid an XY problem, but I strongly believe this is best solved by the answer to the ... | 25,098 | 1,394,393 | 2019-09-01 10:20:52 | 26,811,432 | 14 | 2014-11-07 22:52:42 | 3,257,826 | 2019-09-01 10:20:52 | https://stackoverflow.com/q/26809898 | https://stackoverflow.com/a/26811432 | <p>We're working hard to fix our messy update procedure, we want it to be trouble-free.</p>
<p>You can see some examples of how we invoke MSYS2 from a batch file when we create a new installer in:</p>
<p><a href="https://github.com/Alexpux/MSYS2-packages/blob/master/msys2-installer/make-msys2-installer.bat" rel="nore... | <p>We're working hard to fix our messy update procedure, we want it to be trouble-free.</p> <p>You can see some examples of how we invoke MSYS2 from a batch file when we create a new installer in:</p> <p><a href="https://github.com/Alexpux/MSYS2-packages/blob/master/msys2-installer/make-msys2-installer.bat" rel="nore... | 390, 105819 | msys2, shell | <h1>Invoke MSYS2 Shell from Command Prompt or PowerShell</h1>
<p>Starting from Command Prompt or PowerShell (either is fine; I can figure out how to do the other given one), how can I invoke the MSYS2 shell to run a command?</p>
<h3>More specific issue</h3>
<p>I'm including this information to avoid an XY problem, bu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,572 | bash | # Invoke MSYS2 Shell from Command Prompt or PowerShell
Starting from Command Prompt or PowerShell (either is fine; I can figure out how to do the other given one), how can I invoke the MSYS2 shell to run a command?
### More specific issue
I'm including this information to avoid an XY problem, but I strongly believe ... | We're working hard to fix our messy update procedure, we want it to be trouble-free.
You can see some examples of how we invoke MSYS2 from a batch file when we create a new installer in:
<https://github.com/Alexpux/MSYS2-packages/blob/master/msys2-installer/make-msys2-installer.bat>
But as @StevenPenny suggests,
``... |
24605656 | Run du on parallel | 17 | 2014-07-07 08:00:51 | <p>I have a very big storage disk (16T). I want to run 'du' on it to figure out how much each subdirectory takes. However, that takes a very long time. Luckily, I have at my disposal a cluster of computers. I can therefore run 'du' on parallel, each job runs on a separate subdirectory, and write a simple script that do... | 6,953 | 54,248 | 2017-11-16 16:27:51 | 24,973,805 | 14 | 2014-07-26 17:45:58 | 363,028 | 2014-07-26 17:45:58 | https://stackoverflow.com/q/24605656 | https://stackoverflow.com/a/24973805 | <p>It is simple to do it using GNU Parallel:</p>
<pre><code>parallel du ::: */*
</code></pre>
| <p>It is simple to do it using GNU Parallel:</p> <pre><code>parallel du ::: */* </code></pre> | 353, 387, 2829, 26163 | bash, csh, du, parallel-processing | <h1>Run du on parallel</h1>
<p>I have a very big storage disk (16T). I want to run 'du' on it to figure out how much each subdirectory takes. However, that takes a very long time. Luckily, I have at my disposal a cluster of computers. I can therefore run 'du' on parallel, each job runs on a separate subdirectory, and w... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,573 | bash | # Run du on parallel
I have a very big storage disk (16T). I want to run 'du' on it to figure out how much each subdirectory takes. However, that takes a very long time. Luckily, I have at my disposal a cluster of computers. I can therefore run 'du' on parallel, each job runs on a separate subdirectory, and write a si... | It is simple to do it using GNU Parallel:
```
parallel du ::: */*
``` |
15558101 | Case insensitive comparison in Bash | 17 | 2013-03-21 21:06:06 | <p>I'm trying to write a comparison in a while statement that's case insensitive. Basically, I'm simply trying to shorten the following to act on a yes or no question prompt to the user ...</p>
<pre><code>while[ $yn == "y" | $yn == "Y" | $yn == "Yes" | $yn == "yes" ] ; do
</code></pre>
<p>What would be the best way ... | 22,721 | 2,150,250 | 2018-09-13 21:32:31 | 15,558,159 | 14 | 2013-03-21 21:09:27 | 465,183 | 2013-03-21 21:29:59 | https://stackoverflow.com/q/15558101 | https://stackoverflow.com/a/15558159 | <pre><code>shopt -s nocasematch
while [[ $yn == y || $yn == "yes" ]] ; do
</code></pre>
<p>or :</p>
<pre><code>shopt -s nocasematch
while [[ $yn =~ (y|yes) ]] ; do
</code></pre>
<h2>Note</h2>
<ul>
<li><code>[[</code> is a bash keyword similar to (but more powerful than) the <code>[</code> command. See <a href="http... | <pre><code>shopt -s nocasematch while [[ $yn == y || $yn == "yes" ]] ; do </code></pre> <p>or :</p> <pre><code>shopt -s nocasematch while [[ $yn =~ (y|yes) ]] ; do </code></pre> <h2>Note</h2> <ul> <li><code>[[</code> is a bash keyword similar to (but more powerful than) the <code>[</code> command. See <a href="http... | 367, 387 | bash, syntax | <h1>Case insensitive comparison in Bash</h1>
<p>I'm trying to write a comparison in a while statement that's case insensitive. Basically, I'm simply trying to shorten the following to act on a yes or no question prompt to the user ...</p>
<pre><code>while[ $yn == "y" | $yn == "Y" | $yn == "Yes" | $yn == "yes" ] ; do
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,574 | bash | # Case insensitive comparison in Bash
I'm trying to write a comparison in a while statement that's case insensitive. Basically, I'm simply trying to shorten the following to act on a yes or no question prompt to the user ...
```
while[ $yn == "y" | $yn == "Y" | $yn == "Yes" | $yn == "yes" ] ; do
```
What would be th... | ```
shopt -s nocasematch
while [[ $yn == y || $yn == "yes" ]] ; do
```
or :
```
shopt -s nocasematch
while [[ $yn =~ (y|yes) ]] ; do
```
## Note
- `[[` is a bash keyword similar to (but more powerful than) the `[` command. See <http://mywiki.wooledge.org/BashFAQ/031> and <http://mywiki.wooledge.org/BashGuide/TestsA... |
14806296 | Garbage collection in bash | 17 | 2013-02-11 05:18:06 | <p>Does bash run a garbage collector? Can it be controlled via some command line options? I can't find anything on the net about this.</p>
<p>I have a bash script that runs and over a few days its memory usage increases. I want to know where the memory is going.</p>
| 11,845 | 366,817 | 2013-02-11 06:46:25 | 14,807,176 | 14 | 2013-02-11 06:46:25 | 1,899,640 | 2013-02-11 06:46:25 | https://stackoverflow.com/q/14806296 | https://stackoverflow.com/a/14807176 | <p>Bash does not run a garbage collector as such. Since it has no concept of references, there is no need to find data without references. It does free memory no longer in use, though.</p>
<p>Here's a simple demonstration of memory usage before and after declaring and overwriting a large variable. Memory usage goes up... | <p>Bash does not run a garbage collector as such. Since it has no concept of references, there is no need to find data without references. It does free memory no longer in use, though.</p> <p>Here's a simple demonstration of memory usage before and after declaring and overwriting a large variable. Memory usage goes up... | 58, 387 | bash, linux | <h1>Garbage collection in bash</h1>
<p>Does bash run a garbage collector? Can it be controlled via some command line options? I can't find anything on the net about this.</p>
<p>I have a bash script that runs and over a few days its memory usage increases. I want to know where the memory is going.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,575 | bash | # Garbage collection in bash
Does bash run a garbage collector? Can it be controlled via some command line options? I can't find anything on the net about this.
I have a bash script that runs and over a few days its memory usage increases. I want to know where the memory is going. | Bash does not run a garbage collector as such. Since it has no concept of references, there is no need to find data without references. It does free memory no longer in use, though.
Here's a simple demonstration of memory usage before and after declaring and overwriting a large variable. Memory usage goes up then down... |
8535947 | XSLT 2.0 transformation via linux shell | 17 | 2011-12-16 15:00:07 | <p>I want to perform an XSLT 2.0 transformation by the use of command line executions. I heard that i could use the Saxon library by a shell command like:</p>
<pre><code>java -jar sax.jar -input foo.xml -xsl foo.xsl -output bar.xml
</code></pre>
<p>Does anyone know how exactly I can achieve that goal?</p>
<p>By the way... | 14,679 | 675,065 | 2022-07-21 14:55:38 | 8,535,996 | 14 | 2011-12-16 15:04:17 | 252,228 | 2022-07-21 14:55:38 | https://stackoverflow.com/q/8535947 | https://stackoverflow.com/a/8535996 | <p>The documentation of Saxon is online: <a href="http://www.saxonica.com/documentation/#!using-xsl/commandline" rel="nofollow noreferrer">http://www.saxonica.com/documentation/#!using-xsl/commandline</a>. So you need:</p>
<pre><code>java -jar saxon9he.jar -xsl:foo.xsl -s:foo.xml -o:bar.xml
</code></pre>
| <p>The documentation of Saxon is online: <a href="http://www.saxonica.com/documentation/#!using-xsl/commandline" rel="nofollow noreferrer">http://www.saxonica.com/documentation/#!using-xsl/commandline</a>. So you need:</p> <pre><code>java -jar saxon9he.jar -xsl:foo.xsl -s:foo.xml -o:bar.xml </code></pre> | 17, 272, 390, 4841, 5398 | jar, java, saxon, shell, xslt | <h1>XSLT 2.0 transformation via linux shell</h1>
<p>I want to perform an XSLT 2.0 transformation by the use of command line executions. I heard that i could use the Saxon library by a shell command like:</p>
<pre><code>java -jar sax.jar -input foo.xml -xsl foo.xsl -output bar.xml
</code></pre>
<p>Does anyone know how e... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,576 | bash | # XSLT 2.0 transformation via linux shell
I want to perform an XSLT 2.0 transformation by the use of command line executions. I heard that i could use the Saxon library by a shell command like:
```
java -jar sax.jar -input foo.xml -xsl foo.xsl -output bar.xml
```
Does anyone know how exactly I can achieve that goal?... | The documentation of Saxon is online: <http://www.saxonica.com/documentation/#!using-xsl/commandline>. So you need:
```
java -jar saxon9he.jar -xsl:foo.xsl -s:foo.xml -o:bar.xml
``` |
7180082 | grep output into array | 17 | 2011-08-24 17:58:28 | <p>Guys How can I make this work</p>
<blockquote>
<p>`find /xyz/abc/music/ |grep def`</p>
</blockquote>
<p>I don't want to store the array in any temporary variable. How can we directly operate on this array.</p>
<p>so to get the 1st element of that array </p>
<blockquote>
<p>echo ${$(`find /xyz/abc/music/ |gre... | 47,178 | 910,149 | 2014-05-13 11:41:54 | 7,180,101 | 14 | 2011-08-24 18:00:08 | 308,392 | 2011-08-24 18:12:19 | https://stackoverflow.com/q/7180082 | https://stackoverflow.com/a/7180101 | <p>If you just need the first element (or rather line), you can use <code>head</code>:</p>
<pre><code>`find /xyz/abc/music/ |grep def | head -n 1`
</code></pre>
<p>If you need access to arbitrary elements, you can store the array first, and then retrieve the element:</p>
<pre><code>arr=(`find /xyz/abc/music/ |grep d... | <p>If you just need the first element (or rather line), you can use <code>head</code>:</p> <pre><code>`find /xyz/abc/music/ |grep def | head -n 1` </code></pre> <p>If you need access to arbitrary elements, you can store the array first, and then retrieve the element:</p> <pre><code>arr=(`find /xyz/abc/music/ |grep d... | 114, 387, 1271 | arrays, bash, grep | <h1>grep output into array</h1>
<p>Guys How can I make this work</p>
<blockquote>
<p>`find /xyz/abc/music/ |grep def`</p>
</blockquote>
<p>I don't want to store the array in any temporary variable. How can we directly operate on this array.</p>
<p>so to get the 1st element of that array </p>
<blockquote>
<p>ech... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,577 | bash | # grep output into array
Guys How can I make this work
> `find /xyz/abc/music/ |grep def`
I don't want to store the array in any temporary variable. How can we directly operate on this array.
so to get the 1st element of that array
> echo ${$(`find /xyz/abc/music/ |grep def`)[0]}
> Please help me How I can achieve... | If you just need the first element (or rather line), you can use `head`:
```
`find /xyz/abc/music/ |grep def | head -n 1`
```
If you need access to arbitrary elements, you can store the array first, and then retrieve the element:
```
arr=(`find /xyz/abc/music/ |grep def`)
echo ${arr[n]}
```
but this will not put ea... |
6827870 | Capturing colorized output to a bash variable | 17 | 2011-07-26 09:20:13 | <p>I want to capture the color output from <code>git status</code> in a variable and print it later.</p>
<p>So far I have come up to:</p>
<pre><code>status=$(git status -s)
echo -e "$status"
</code></pre>
<p>The above script keeps the newline intact (thx to <a href="https://stackoverflow.com/q/613572/146272">Capturi... | 3,924 | 146,272 | 2015-11-22 22:06:45 | 6,827,961 | 14 | 2011-07-26 09:28:20 | 259,310 | 2011-07-26 09:28:20 | https://stackoverflow.com/q/6827870 | https://stackoverflow.com/a/6827961 | <p>The problem is not that bash strips the color output before storing the text, but that <code>git</code> refuses to produce the colored output int he first place, probably because it can tell that its STDOUT is not a terminal. Many commands do this (e.g. <code>ls</code>). Most of these have an option telling them to ... | <p>The problem is not that bash strips the color output before storing the text, but that <code>git</code> refuses to produce the colored output int he first place, probably because it can tell that its STDOUT is not a terminal. Many commands do this (e.g. <code>ls</code>). Most of these have an option telling them to ... | 276, 387, 6439 | bash, colors, variables | <h1>Capturing colorized output to a bash variable</h1>
<p>I want to capture the color output from <code>git status</code> in a variable and print it later.</p>
<p>So far I have come up to:</p>
<pre><code>status=$(git status -s)
echo -e "$status"
</code></pre>
<p>The above script keeps the newline intact (thx to <a h... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,578 | bash | # Capturing colorized output to a bash variable
I want to capture the color output from `git status` in a variable and print it later.
So far I have come up to:
```
status=$(git status -s)
echo -e "$status"
```
The above script keeps the newline intact (thx to [Capturing multiple line output into a Bash variable](h... | The problem is not that bash strips the color output before storing the text, but that `git` refuses to produce the colored output int he first place, probably because it can tell that its STDOUT is not a terminal. Many commands do this (e.g. `ls`). Most of these have an option telling them to use color anyway, for use... |
6297271 | Is "export" needed, when setting a variable in .bashrc? | 17 | 2011-06-09 18:08:45 | <p>I wonder if there is a need to use "export" when setting a variable in .bashrc.</p>
<p>In my tests editing .bashrc there was no difference between</p>
<pre><code>foo=bar
</code></pre>
<p>and</p>
<pre><code>export foo=bar
</code></pre>
<p>In both cases, after login "echo $foo" outputs "bar".</p>
<p>I am using D... | 8,156 | 568,737 | 2023-06-16 00:39:02 | 6,297,339 | 14 | 2011-06-09 18:13:47 | 265,804 | 2011-06-09 18:13:47 | https://stackoverflow.com/q/6297271 | https://stackoverflow.com/a/6297339 | <p>Try creating a shell script that accesses the <code>foo</code> variable.</p>
<p>If <code>foo</code> was <code>export</code>'ed, it will be visible in the shell script, otherwise it won't.</p>
| <p>Try creating a shell script that accesses the <code>foo</code> variable.</p> <p>If <code>foo</code> was <code>export</code>'ed, it will be visible in the shell script, otherwise it won't.</p> | 276, 387, 4167 | bash, export, variables | <h1>Is "export" needed, when setting a variable in .bashrc?</h1>
<p>I wonder if there is a need to use "export" when setting a variable in .bashrc.</p>
<p>In my tests editing .bashrc there was no difference between</p>
<pre><code>foo=bar
</code></pre>
<p>and</p>
<pre><code>export foo=bar
</code></pre>
<p>In both c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,579 | bash | # Is "export" needed, when setting a variable in .bashrc?
I wonder if there is a need to use "export" when setting a variable in .bashrc.
In my tests editing .bashrc there was no difference between
```
foo=bar
```
and
```
export foo=bar
```
In both cases, after login "echo $foo" outputs "bar".
I am using Debian ... | Try creating a shell script that accesses the `foo` variable.
If `foo` was `export`'ed, it will be visible in the shell script, otherwise it won't. |
3852616 | xargs with command that open editor leaves shell in weird state | 17 | 2010-10-04 03:09:36 | <p>I tried to make an alias for committing several different git projects. I tried something like </p>
<pre><code>cat projectPaths | \
xargs -I project git --git-dir=project/.git --work-tree=project commit -a
</code></pre>
<p>where projectPaths is a file containing the paths to all the projects I want to commit. Th... | 5,409 | 465,488 | 2018-11-02 21:41:15 | 3,852,702 | 14 | 2010-10-04 03:37:24 | 89,817 | 2010-10-04 03:37:24 | https://stackoverflow.com/q/3852616 | https://stackoverflow.com/a/3852702 | <p>The problem is that since you're running xargs (and hence git and hence vim) in a pipeline, its stdin is taken from the output of <code>cat projectPaths</code> rather than the terminal; this is confusing vim. Fortunately, the solution is simple: add the <code>-o</code> flag to xargs, and it'll start git (and hence ... | <p>The problem is that since you're running xargs (and hence git and hence vim) in a pipeline, its stdin is taken from the output of <code>cat projectPaths</code> rather than the terminal; this is confusing vim. Fortunately, the solution is simple: add the <code>-o</code> flag to xargs, and it'll start git (and hence ... | 34, 293, 387, 531 | bash, scripting, unix, vi | <h1>xargs with command that open editor leaves shell in weird state</h1>
<p>I tried to make an alias for committing several different git projects. I tried something like </p>
<pre><code>cat projectPaths | \
xargs -I project git --git-dir=project/.git --work-tree=project commit -a
</code></pre>
<p>where projectPaths... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,580 | bash | # xargs with command that open editor leaves shell in weird state
I tried to make an alias for committing several different git projects. I tried something like
```
cat projectPaths | \
xargs -I project git --git-dir=project/.git --work-tree=project commit -a
```
where projectPaths is a file containing the paths to ... | The problem is that since you're running xargs (and hence git and hence vim) in a pipeline, its stdin is taken from the output of `cat projectPaths` rather than the terminal; this is confusing vim. Fortunately, the solution is simple: add the `-o` flag to xargs, and it'll start git (and hence vim) with input from /dev/... |
65980636 | Is anybody having this Powershell "Update-Help" command, issue? | 16 | 2021-01-31 15:06:45 | <p>I am trying to download and install Help files for all the commands but it won't work. I am using Powershell 7.1.1 inside the Windows Terminal.</p>
<pre><code>Update-Help: Failed to update Help for the module(s) 'ConfigDefender, PSReadline' with UI culture(s) {en-US} : One or more errors occurred. (Response status c... | 10,292 | 14,333,734 | 2024-05-06 02:27:51 | 65,982,117 | 14 | 2021-01-31 17:24:50 | 14,333,734 | 2023-06-23 10:23:01 | https://stackoverflow.com/q/65980636 | https://stackoverflow.com/a/65982117 | <p>Solved, thanks to another post I've found on stackoverflow.
<a href="https://answers.microsoft.com/en-us/windows/forum/all/updateing-powershell-user-help-files/07afd880-c543-4e56-9446-1e9eb509003d" rel="nofollow noreferrer">According to this Microsoft Forum</a>, the below command should bypass any errors and give yo... | <p>Solved, thanks to another post I've found on stackoverflow. <a href="https://answers.microsoft.com/en-us/windows/forum/all/updateing-powershell-user-help-files/07afd880-c543-4e56-9446-1e9eb509003d" rel="nofollow noreferrer">According to this Microsoft Forum</a>, the below command should bypass any errors and give yo... | 526, 144089 | powershell, powershell-7.0 | <h1>Is anybody having this Powershell "Update-Help" command, issue?</h1>
<p>I am trying to download and install Help files for all the commands but it won't work. I am using Powershell 7.1.1 inside the Windows Terminal.</p>
<pre><code>Update-Help: Failed to update Help for the module(s) 'ConfigDefender, PSReadline' wit... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,581 | bash | # Is anybody having this Powershell "Update-Help" command, issue?
I am trying to download and install Help files for all the commands but it won't work. I am using Powershell 7.1.1 inside the Windows Terminal.
```
Update-Help: Failed to update Help for the module(s) 'ConfigDefender, PSReadline' with UI culture(s) {en... | Solved, thanks to another post I've found on stackoverflow.
[According to this Microsoft Forum](https://answers.microsoft.com/en-us/windows/forum/all/updateing-powershell-user-help-files/07afd880-c543-4e56-9446-1e9eb509003d), the below command should bypass any errors and give you a successful run of cmdlet `Update-Hel... |
27722205 | 'New-AzureStorageContext' is not recognized | 16 | 2014-12-31 14:04:05 | <p>I'm trying to run a PowerShell script that functions on a colleague's computer, but is failing on mine on this line:</p>
<pre><code>Set-Variable -Name StorageContext -Value (New-AzureStorageContext -ConnectionString $storageConnectionString)
</code></pre>
<p>My error is:</p>
<blockquote>
<p>New-AzureStorageCont... | 45,041 | 980,799 | 2023-09-21 17:21:56 | 56,055,633 | 14 | 2019-05-09 08:50:24 | 8,841,378 | 2023-09-21 17:21:56 | https://stackoverflow.com/q/27722205 | https://stackoverflow.com/a/56055633 | <p>I have same problem with you. My problem is that I was using the wrong command: <code>AzureStorageContext</code>. It should be <code>AzStorageContext</code>.</p>
| <p>I have same problem with you. My problem is that I was using the wrong command: <code>AzureStorageContext</code>. It should be <code>AzStorageContext</code>.</p> | 526, 14158 | azure, powershell | <h1>'New-AzureStorageContext' is not recognized</h1>
<p>I'm trying to run a PowerShell script that functions on a colleague's computer, but is failing on mine on this line:</p>
<pre><code>Set-Variable -Name StorageContext -Value (New-AzureStorageContext -ConnectionString $storageConnectionString)
</code></pre>
<p>My ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,582 | bash | # 'New-AzureStorageContext' is not recognized
I'm trying to run a PowerShell script that functions on a colleague's computer, but is failing on mine on this line:
```
Set-Variable -Name StorageContext -Value (New-AzureStorageContext -ConnectionString $storageConnectionString)
```
My error is:
> New-AzureStorageCont... | I have same problem with you. My problem is that I was using the wrong command: `AzureStorageContext`. It should be `AzStorageContext`. |
49503805 | echo command color not working | 16 | 2018-03-27 03:14:55 | <p>I have a code like this:</p>
<pre><code>#!/bin/bash
COLOR_REST='\e[0m'
COLOR_GREEN='\e[0;32m'
echo -e "${COLOR_GREEN}OK${COLOR_REST}"
</code></pre>
<p>When I copy and paste the code into my iTerm, it displays <code>OK</code> in the color of green.</p>
<p><a href="https://i.sstatic.net/gukJB.png" rel="noreferrer"... | 9,910 | 1,408,347 | 2022-03-28 23:23:05 | 49,504,086 | 14 | 2018-03-27 03:52:43 | 236,465 | 2018-03-27 03:52:43 | https://stackoverflow.com/q/49503805 | https://stackoverflow.com/a/49504086 | <p>Use</p>
<pre><code>#!/bin/bash
COLOR_REST="$(tput sgr0)"
COLOR_GREEN="$(tput setaf 2)"
printf '%s%s%s\n' $COLOR_GREEN 'OK' $COLOR_REST
</code></pre>
<p>which uses printf to avoid <code>echo</code> options and <code>tput</code> to be portable across different terminals.</p>
| <p>Use</p> <pre><code>#!/bin/bash COLOR_REST="$(tput sgr0)" COLOR_GREEN="$(tput setaf 2)" printf '%s%s%s\n' $COLOR_GREEN 'OK' $COLOR_REST </code></pre> <p>which uses printf to avoid <code>echo</code> options and <code>tput</code> to be portable across different terminals.</p> | 369, 387, 6439, 13824 | bash, colors, echo, macos | <h1>echo command color not working</h1>
<p>I have a code like this:</p>
<pre><code>#!/bin/bash
COLOR_REST='\e[0m'
COLOR_GREEN='\e[0;32m'
echo -e "${COLOR_GREEN}OK${COLOR_REST}"
</code></pre>
<p>When I copy and paste the code into my iTerm, it displays <code>OK</code> in the color of green.</p>
<p><a href="https://i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,583 | bash | # echo command color not working
I have a code like this:
```
#!/bin/bash
COLOR_REST='\e[0m'
COLOR_GREEN='\e[0;32m'
echo -e "${COLOR_GREEN}OK${COLOR_REST}"
```
When I copy and paste the code into my iTerm, it displays `OK` in the color of green.
[](ht... | Use
```
#!/bin/bash
COLOR_REST="$(tput sgr0)"
COLOR_GREEN="$(tput setaf 2)"
printf '%s%s%s\n' $COLOR_GREEN 'OK' $COLOR_REST
```
which uses printf to avoid `echo` options and `tput` to be portable across different terminals. |
46467523 | How to change picture background color using ImageMagick? | 16 | 2017-09-28 11:00:34 | <p>I want to change my picture background color, This is my source <a href="http://cdn.mayike.com/emotion/img/attached/1/image/dt/20170916/18/20170916180007_833.png" rel="noreferrer">http://cdn.mayike.com/emotion/img/attached/1/image/dt/20170916/18/20170916180007_833.png</a>.<br><br>
If I want to change the background ... | 29,626 | 7,664,948 | 2018-07-06 23:29:00 | 46,474,064 | 14 | 2017-09-28 16:28:12 | 7,355,741 | 2017-09-28 16:28:12 | https://stackoverflow.com/q/46467523 | https://stackoverflow.com/a/46474064 | <p>I do not think you will get a perfect result due to the fact that your image is not binary. Nevertheless in Imagemagick you have two choices. First you could just change all white to red:</p>
<pre><code>convert 20170916180007_833.png.jpeg -fuzz 25% -fill red -opaque white -flatten result1.png
</code></pre>
<p><a h... | <p>I do not think you will get a perfect result due to the fact that your image is not binary. Nevertheless in Imagemagick you have two choices. First you could just change all white to red:</p> <pre><code>convert 20170916180007_833.png.jpeg -fuzz 25% -fill red -opaque white -flatten result1.png </code></pre> <p><a h... | 58, 390, 6554 | imagemagick, linux, shell | <h1>How to change picture background color using ImageMagick?</h1>
<p>I want to change my picture background color, This is my source <a href="http://cdn.mayike.com/emotion/img/attached/1/image/dt/20170916/18/20170916180007_833.png" rel="noreferrer">http://cdn.mayike.com/emotion/img/attached/1/image/dt/20170916/18/2017... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,584 | bash | # How to change picture background color using ImageMagick?
I want to change my picture background color, This is my source <http://cdn.mayike.com/emotion/img/attached/1/image/dt/20170916/18/20170916180007_833.png>.
If I want to change the background color to another color, what should I do?
If I want to cha... | I do not think you will get a perfect result due to the fact that your image is not binary. Nevertheless in Imagemagick you have two choices. First you could just change all white to red:
```
convert 20170916180007_833.png.jpeg -fuzz 25% -fill red -opaque white -flatten result1.png
```
[![enter image description here... |
34793704 | Reset bash history search position | 16 | 2016-01-14 15:44:10 | <p>In a terminal the Bash history can be searched easily with <kbd>Ctrl</kbd>+<kbd>r</kbd>. But what if I cannot find what I am looking for? I am stuck in the middle of my history. What if a want to search again from the beginning?</p>
<p>Is there another shortcut to reset the history search?</p>
| 2,215 | 3,751,845 | 2019-06-07 15:19:51 | 34,794,365 | 14 | 2016-01-14 16:13:52 | 3,266,847 | 2016-01-14 16:13:52 | https://stackoverflow.com/q/34793704 | https://stackoverflow.com/a/34794365 | <p>There is <kbd>Meta</kbd> + <kbd>></kbd>, which is bound to <code>end-of-history</code> and useful if you're in the middle of your history. The meta key is usually the <kbd>Alt</kbd> key.</p>
<p>If you see that your incremental history search isn't successful, you can use <kbd>Ctrl</kbd> + <kbd>G</kbd>, which is bou... | <p>There is <kbd>Meta</kbd> + <kbd>></kbd>, which is bound to <code>end-of-history</code> and useful if you're in the middle of your history. The meta key is usually the <kbd>Alt</kbd> key.</p> <p>If you see that your incremental history search isn't successful, you can use <kbd>Ctrl</kbd> + <kbd>G</kbd>, which is bou... | 58, 387, 391, 4198 | bash, keyboard-shortcuts, linux, terminal | <h1>Reset bash history search position</h1>
<p>In a terminal the Bash history can be searched easily with <kbd>Ctrl</kbd>+<kbd>r</kbd>. But what if I cannot find what I am looking for? I am stuck in the middle of my history. What if a want to search again from the beginning?</p>
<p>Is there another shortcut to reset t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,585 | bash | # Reset bash history search position
In a terminal the Bash history can be searched easily with `Ctrl`+`r`. But what if I cannot find what I am looking for? I am stuck in the middle of my history. What if a want to search again from the beginning?
Is there another shortcut to reset the history search? | There is `Meta` + `>`, which is bound to `end-of-history` and useful if you're in the middle of your history. The meta key is usually the `Alt` key.
If you see that your incremental history search isn't successful, you can use `Ctrl` + `G`, which is bound to `abort` and restores the previous line and history position.... |
27268358 | Create directory in hadoop filesystem | 16 | 2014-12-03 09:47:44 | <p>I'm new to hadoop. I am trying to create a directory in hdfs but I am not able to create.</p>
<p>I have logged into "hduser" hence I assumed /home/hduser" pre-exists as Unix fs. So I tried to create hadoop directory using below command. </p>
<pre><code>[hduser@Virus ~]$ hadoop fs -mkdir /home/hduser/mydata/
14/12... | 84,046 | 2,310,989 | 2021-10-31 06:24:43 | 31,146,005 | 14 | 2015-06-30 18:43:00 | 2,294,772 | 2018-04-18 05:48:49 | https://stackoverflow.com/q/27268358 | https://stackoverflow.com/a/31146005 | <p>To leave safe mode, try below command since <code>hadoop dfsadmin -safemode</code> is deprecated in newer distribution of Hadoop:</p>
<pre><code> hdfs dfsadmin -safemode leave
</code></pre>
<p>By default, user's <code>home</code> directory in hdfs exists with '/user/hduser' not as /home/hduser'.</p>
<p>If you tri... | <p>To leave safe mode, try below command since <code>hadoop dfsadmin -safemode</code> is deprecated in newer distribution of Hadoop:</p> <pre><code> hdfs dfsadmin -safemode leave </code></pre> <p>By default, user's <code>home</code> directory in hdfs exists with '/user/hduser' not as /home/hduser'.</p> <p>If you tri... | 390, 1995, 11225, 40255 | command-line-interface, hadoop, hdfs, shell | <h1>Create directory in hadoop filesystem</h1>
<p>I'm new to hadoop. I am trying to create a directory in hdfs but I am not able to create.</p>
<p>I have logged into "hduser" hence I assumed /home/hduser" pre-exists as Unix fs. So I tried to create hadoop directory using below command. </p>
<pre><code>[hduser@Virus ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,586 | bash | # Create directory in hadoop filesystem
I'm new to hadoop. I am trying to create a directory in hdfs but I am not able to create.
I have logged into "hduser" hence I assumed /home/hduser" pre-exists as Unix fs. So I tried to create hadoop directory using below command.
```
[hduser@Virus ~]$ hadoop fs -mkdir /home/hd... | To leave safe mode, try below command since `hadoop dfsadmin -safemode` is deprecated in newer distribution of Hadoop:
```
hdfs dfsadmin -safemode leave
```
By default, user's `home` directory in hdfs exists with '/user/hduser' not as /home/hduser'.
If you tried to create directory directly like below then it will ... |
18731610 | xargs with multiple commands | 16 | 2013-09-11 02:12:14 | <p>In the current directory, I'd like to print the filename and contents in it.
I can print filenames or contents separately by</p>
<pre><code>find . | grep "file_for_print" | xargs echo
find . | grep "file_for_print" | xargs cat
</code></pre>
<p>but what I want is printing them together like this:</p>
<pre><code>fi... | 28,733 | 930,071 | 2017-08-14 05:55:27 | 18,731,704 | 14 | 2013-09-11 02:26:03 | 1,566,221 | 2017-08-14 05:37:29 | https://stackoverflow.com/q/18731610 | https://stackoverflow.com/a/18731704 | <p>To start with, there is virtually no difference between:</p>
<pre><code>find . | grep "file_for_print" | xargs echo
</code></pre>
<p>and</p>
<pre><code>find . -name "file_for_print*"
</code></pre>
<p>except that the second one will not match filenames like <code>this_is_not_the_file_for_print</code>, and it will... | <p>To start with, there is virtually no difference between:</p> <pre><code>find . | grep "file_for_print" | xargs echo </code></pre> <p>and</p> <pre><code>find . -name "file_for_print*" </code></pre> <p>except that the second one will not match filenames like <code>this_is_not_the_file_for_print</code>, and it will... | 387, 10326 | bash, xargs | <h1>xargs with multiple commands</h1>
<p>In the current directory, I'd like to print the filename and contents in it.
I can print filenames or contents separately by</p>
<pre><code>find . | grep "file_for_print" | xargs echo
find . | grep "file_for_print" | xargs cat
</code></pre>
<p>but what I want is printing them ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,587 | bash | # xargs with multiple commands
In the current directory, I'd like to print the filename and contents in it.
I can print filenames or contents separately by
```
find . | grep "file_for_print" | xargs echo
find . | grep "file_for_print" | xargs cat
```
but what I want is printing them together like this:
```
file1
li... | To start with, there is virtually no difference between:
```
find . | grep "file_for_print" | xargs echo
```
and
```
find . -name "file_for_print*"
```
except that the second one will not match filenames like `this_is_not_the_file_for_print`, and it will print the filenames one per line. It will also be a lot faste... |
8537473 | Is there an equivalent of "this" in powershell? | 16 | 2011-12-16 16:56:25 | <p>Basically I have this code:</p>
<pre><code>$file = $web.GetFile("Pages/default.aspx")
$file.CheckOut()
</code></pre>
<p>and I was wondering if there is anyway to use a pipe and the powershell equivalent of <code>this</code> to rewrite it as:</p>
<pre><code>$web.GetFile("Pages/default.aspx") | $this.CheckOut()
</c... | 15,023 | 226,897 | 2017-10-24 01:00:34 | 8,537,574 | 14 | 2011-12-16 17:02:52 | 153,982 | 2011-12-16 17:02:52 | https://stackoverflow.com/q/8537473 | https://stackoverflow.com/a/8537574 | <p>What you're looking for is <code>$_</code> and it represents the current object in the pipeline. However you can only access <code>$_</code> in a scriptblock of a command that takes pipeline input e.g.:</p>
<pre><code>$web.GetFile("Pages/default.aspx") | Foreach-Object -Process {$_.Checkout()}
</code></pre>
<p>Ho... | <p>What you're looking for is <code>$_</code> and it represents the current object in the pipeline. However you can only access <code>$_</code> in a scriptblock of a command that takes pipeline input e.g.:</p> <pre><code>$web.GetFile("Pages/default.aspx") | Foreach-Object -Process {$_.Checkout()} </code></pre> <p>Ho... | 526 | powershell | <h1>Is there an equivalent of "this" in powershell?</h1>
<p>Basically I have this code:</p>
<pre><code>$file = $web.GetFile("Pages/default.aspx")
$file.CheckOut()
</code></pre>
<p>and I was wondering if there is anyway to use a pipe and the powershell equivalent of <code>this</code> to rewrite it as:</p>
<pre><code>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,588 | bash | # Is there an equivalent of "this" in powershell?
Basically I have this code:
```
$file = $web.GetFile("Pages/default.aspx")
$file.CheckOut()
```
and I was wondering if there is anyway to use a pipe and the powershell equivalent of `this` to rewrite it as:
```
$web.GetFile("Pages/default.aspx") | $this.CheckOut()
`... | What you're looking for is `$_` and it represents the current object in the pipeline. However you can only access `$_` in a scriptblock of a command that takes pipeline input e.g.:
```
$web.GetFile("Pages/default.aspx") | Foreach-Object -Process {$_.Checkout()}
```
However there are aliases for the Foreach-Object cmd... |
7663481 | Trapping getopt invalid options | 16 | 2011-10-05 15:06:58 | <p>I'm using <code>getopt</code> (not <code>getops</code>) to provide the ability for my bash script to process options and switches (both long --option and short -o forms).</p>
<p>I'd like to be able to trap invalid options and handle them, typically echoing out that the user should try <code>cmd --help</code> and th... | 21,299 | 467,386 | 2013-11-02 02:27:24 | 7,675,307 | 14 | 2011-10-06 13:56:07 | 96,588 | 2011-10-06 13:56:07 | https://stackoverflow.com/q/7663481 | https://stackoverflow.com/a/7675307 | <p><a href="https://github.com/l0b0/tilde/blob/master/scripts/make-links.sh#L68" rel="noreferrer">This</a> sort of style works for me:</p>
<pre><code>params="$(getopt -o d:h -l diff:,help --name "$cmdname" -- "$@")"
if [ $? -ne 0 ]
then
usage
fi
eval set -- "$params"
unset params
while true
do
case $1 in
... | <p><a href="https://github.com/l0b0/tilde/blob/master/scripts/make-links.sh#L68" rel="noreferrer">This</a> sort of style works for me:</p> <pre><code>params="$(getopt -o d:h -l diff:,help --name "$cmdname" -- "$@")" if [ $? -ne 0 ] then usage fi eval set -- "$params" unset params while true do case $1 in ... | 387, 390, 6107, 10831 | bash, case, getopt, shell | <h1>Trapping getopt invalid options</h1>
<p>I'm using <code>getopt</code> (not <code>getops</code>) to provide the ability for my bash script to process options and switches (both long --option and short -o forms).</p>
<p>I'd like to be able to trap invalid options and handle them, typically echoing out that the user ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,589 | bash | # Trapping getopt invalid options
I'm using `getopt` (not `getops`) to provide the ability for my bash script to process options and switches (both long --option and short -o forms).
I'd like to be able to trap invalid options and handle them, typically echoing out that the user should try `cmd --help` and then exiti... | [This](https://github.com/l0b0/tilde/blob/master/scripts/make-links.sh#L68) sort of style works for me:
```
params="$(getopt -o d:h -l diff:,help --name "$cmdname" -- "$@")"
if [ $? -ne 0 ]
then
usage
fi
eval set -- "$params"
unset params
while true
do
case $1 in
-d|--diff)
diff_exec=(${... |
2472273 | How do I run a sudo command in Emacs? | 16 | 2010-03-18 18:07:17 | <p>I'm trying to create shortcut keys for some commonly used sudo shell commands (for example, having <code>C-c s</code> run <code>(shell-command "sudo /etc/init.d/apache2 restart")</code>).</p>
<p>I tried using a straight-up shell-command call as above, but it just outputs the following to the <code>*Shell Command Ou... | 8,818 | 190,887 | 2022-08-27 17:14:08 | 2,473,152 | 14 | 2010-03-18 20:29:51 | 17,637 | 2012-11-15 11:53:48 | https://stackoverflow.com/q/2472273 | https://stackoverflow.com/a/2473152 | <p>How about:</p>
<pre><code>(shell-command (concat "echo " (shell-quote-argument (read-passwd "Password? "))
" | sudo -S your_command_here"))
</code></pre>
| <p>How about:</p> <pre><code>(shell-command (concat "echo " (shell-quote-argument (read-passwd "Password? ")) " | sudo -S your_command_here")) </code></pre> | 371, 390, 1674 | emacs, shell, sudo | <h1>How do I run a sudo command in Emacs?</h1>
<p>I'm trying to create shortcut keys for some commonly used sudo shell commands (for example, having <code>C-c s</code> run <code>(shell-command "sudo /etc/init.d/apache2 restart")</code>).</p>
<p>I tried using a straight-up shell-command call as above, but it just outpu... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,590 | bash | # How do I run a sudo command in Emacs?
I'm trying to create shortcut keys for some commonly used sudo shell commands (for example, having `C-c s` run `(shell-command "sudo /etc/init.d/apache2 restart")`).
I tried using a straight-up shell-command call as above, but it just outputs the following to the `*Shell Comman... | How about:
```
(shell-command (concat "echo " (shell-quote-argument (read-passwd "Password? "))
" | sudo -S your_command_here"))
``` |
1824115 | Display socket options | 16 | 2009-12-01 05:11:05 | <p>How I can see from shell what socket options are set? In particular
I'm interesting to know if SO_BROADCAST is set?</p>
| 18,166 | 135,960 | 2020-05-25 21:44:16 | 1,824,239 | 14 | 2009-12-01 05:52:43 | 9,530 | 2009-12-01 05:52:43 | https://stackoverflow.com/q/1824115 | https://stackoverflow.com/a/1824239 | <p>You can use <a href="http://linux.die.net/man/8/lsof" rel="noreferrer"><code>lsof(8)</code></a>. If <code>PID</code> is the process ID and <code>FD</code> is the file descriptor number of the socket you're interested in, you can do this:</p>
<pre><code>lsof -a -p PID -d FD -T f
</code></pre>
<p>To list all IPv4 s... | <p>You can use <a href="http://linux.die.net/man/8/lsof" rel="noreferrer"><code>lsof(8)</code></a>. If <code>PID</code> is the process ID and <code>FD</code> is the file descriptor number of the socket you're interested in, you can do this:</p> <pre><code>lsof -a -p PID -d FD -T f </code></pre> <p>To list all IPv4 s... | 58, 390 | linux, shell | <h1>Display socket options</h1>
<p>How I can see from shell what socket options are set? In particular
I'm interesting to know if SO_BROADCAST is set?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,591 | bash | # Display socket options
How I can see from shell what socket options are set? In particular
I'm interesting to know if SO_BROADCAST is set? | You can use [`lsof(8)`](http://linux.die.net/man/8/lsof). If `PID` is the process ID and `FD` is the file descriptor number of the socket you're interested in, you can do this:
```
lsof -a -p PID -d FD -T f
```
To list all IPv4 sockets of a process:
```
lsof -a -p PID -i 4 -T f
```
This will print out the socket op... |
369990 | Is it possible to customize error display in powershell? | 16 | 2008-12-15 22:56:58 | <p>I find the standard Powershell display of errors (red text, multi-line display) a bit distracting. Is it possible to customize this?</p>
| 16,576 | 34,438 | 2016-10-26 13:17:52 | 370,052 | 14 | 2008-12-15 23:20:59 | 40,405 | 2011-11-01 20:25:53 | https://stackoverflow.com/q/369990 | https://stackoverflow.com/a/370052 | <p>Yes and yes.</p>
<p>You can use the built-in <code>$host</code> object if all you want to do is change the text color. However, you can't change the error message itself - that's hardcoded.</p>
<p>What you could do is (a) suppress the error messages, and instead (b) trap the errors and display your own.</p>
<p>Ac... | <p>Yes and yes.</p> <p>You can use the built-in <code>$host</code> object if all you want to do is change the text color. However, you can't change the error message itself - that's hardcoded.</p> <p>What you could do is (a) suppress the error messages, and instead (b) trap the errors and display your own.</p> <p>Ac... | 526, 964 | customization, powershell | <h1>Is it possible to customize error display in powershell?</h1>
<p>I find the standard Powershell display of errors (red text, multi-line display) a bit distracting. Is it possible to customize this?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,592 | bash | # Is it possible to customize error display in powershell?
I find the standard Powershell display of errors (red text, multi-line display) a bit distracting. Is it possible to customize this? | Yes and yes.
You can use the built-in `$host` object if all you want to do is change the text color. However, you can't change the error message itself - that's hardcoded.
What you could do is (a) suppress the error messages, and instead (b) trap the errors and display your own.
Accomplish (a) by setting `$ErrorActi... |
52649122 | Check function exists in PowerShell module | 15 | 2018-10-04 14:23:14 | <p>I’ve the following PowerShell script which searches in a directory for PowerShell module). All found modules will be imported and stored in a list (using the -PassThru) option.
The scrip iterates over the imported modules and invokes a function defined in the module:</p>
<pre><code># Discover and import all modules... | 11,578 | 1,320,170 | 2024-01-24 18:52:17 | 52,649,216 | 14 | 2018-10-04 14:27:51 | 3,829,407 | 2018-10-04 14:27:51 | https://stackoverflow.com/q/52649122 | https://stackoverflow.com/a/52649216 | <p><code>Get-Command</code> can tell you this. You can even use module scope to be sure it comes from a specific module</p>
<pre><code>get-command activedirectory\get-aduser -erroraction silentlycontinue
</code></pre>
<p>For example. Evaluate that in an if statement and you should be good to go. </p>
| <p><code>Get-Command</code> can tell you this. You can even use module scope to be sure it comes from a specific module</p> <pre><code>get-command activedirectory\get-aduser -erroraction silentlycontinue </code></pre> <p>For example. Evaluate that in an if statement and you should be good to go. </p> | 526 | powershell | <h1>Check function exists in PowerShell module</h1>
<p>I’ve the following PowerShell script which searches in a directory for PowerShell module). All found modules will be imported and stored in a list (using the -PassThru) option.
The scrip iterates over the imported modules and invokes a function defined in the modul... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,593 | bash | # Check function exists in PowerShell module
I’ve the following PowerShell script which searches in a directory for PowerShell module). All found modules will be imported and stored in a list (using the -PassThru) option.
The scrip iterates over the imported modules and invokes a function defined in the module:
```
#... | `Get-Command` can tell you this. You can even use module scope to be sure it comes from a specific module
```
get-command activedirectory\get-aduser -erroraction silentlycontinue
```
For example. Evaluate that in an if statement and you should be good to go. |
44794821 | Macports: assume yes on "Continue Y/N" prompts? | 15 | 2017-06-28 06:09:19 | <p>I'm a complete noob when it comes to macports. I've just started a new job, they've given me a new work laptop and a basic bash script filled with just over 20,000 ports. I'm running macports 2.4.1 on OS X Sierra.</p>
<p>Occasionally a port wants my password, usually to allow a port to run on startup. So simply cre... | 3,800 | 7,024,304 | 2018-09-07 07:54:12 | 44,808,833 | 14 | 2017-06-28 17:14:01 | 5,041,452 | 2017-12-30 23:06:46 | https://stackoverflow.com/q/44794821 | https://stackoverflow.com/a/44808833 | <p>Add the <code>-N</code> flag to the port command so "interactive questions are not asked."</p>
<p>From <code>man port</code>:</p>
<pre><code> -N
Non-interactive mode, interactive questions are not asked
</code></pre>
| <p>Add the <code>-N</code> flag to the port command so "interactive questions are not asked."</p> <p>From <code>man port</code>:</p> <pre><code> -N Non-interactive mode, interactive questions are not asked </code></pre> | 369, 387, 8199 | bash, macos, macports | <h1>Macports: assume yes on "Continue Y/N" prompts?</h1>
<p>I'm a complete noob when it comes to macports. I've just started a new job, they've given me a new work laptop and a basic bash script filled with just over 20,000 ports. I'm running macports 2.4.1 on OS X Sierra.</p>
<p>Occasionally a port wants my password,... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,594 | bash | # Macports: assume yes on "Continue Y/N" prompts?
I'm a complete noob when it comes to macports. I've just started a new job, they've given me a new work laptop and a basic bash script filled with just over 20,000 ports. I'm running macports 2.4.1 on OS X Sierra.
Occasionally a port wants my password, usually to allo... | Add the `-N` flag to the port command so "interactive questions are not asked."
From `man port`:
```
-N
Non-interactive mode, interactive questions are not asked
``` |
44059885 | PowerShell Remove Junction | 15 | 2017-05-19 01:02:26 | <p>As of Windows 10 PowerShell is finally capable of creating Junctions and links natively.</p>
<p>Howerver the Remove-Item function seems to be unaware of the junction and tries to remove the directory asking for confirmation and if it should recursively delete items within.</p>
<p>So, the question is:
Is there a wa... | 23,245 | 333,492 | 2025-08-18 09:58:06 | 44,060,418 | 14 | 2017-05-19 02:21:36 | 3,829,407 | 2017-05-19 02:21:36 | https://stackoverflow.com/q/44059885 | https://stackoverflow.com/a/44060418 | <blockquote>
<p>Is there a way to remove a junction using PowerShell?</p>
</blockquote>
<p>Currently, at least in PowerShell v5, <a href="https://github.com/PowerShell/PowerShell/issues/621" rel="noreferrer">this is considered "fixed"</a>. What you can do is use the <code>-Force</code> switch, else you will get an e... | <blockquote> <p>Is there a way to remove a junction using PowerShell?</p> </blockquote> <p>Currently, at least in PowerShell v5, <a href="https://github.com/PowerShell/PowerShell/issues/621" rel="noreferrer">this is considered "fixed"</a>. What you can do is use the <code>-Force</code> switch, else you will get an e... | 526, 40006 | junction, powershell | <h1>PowerShell Remove Junction</h1>
<p>As of Windows 10 PowerShell is finally capable of creating Junctions and links natively.</p>
<p>Howerver the Remove-Item function seems to be unaware of the junction and tries to remove the directory asking for confirmation and if it should recursively delete items within.</p>
<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,595 | bash | # PowerShell Remove Junction
As of Windows 10 PowerShell is finally capable of creating Junctions and links natively.
Howerver the Remove-Item function seems to be unaware of the junction and tries to remove the directory asking for confirmation and if it should recursively delete items within.
So, the question is:
... | > Is there a way to remove a junction using PowerShell?
Currently, at least in PowerShell v5, [this is considered "fixed"](https://github.com/PowerShell/PowerShell/issues/621). What you can do is use the `-Force` switch, else you will get an error calling the path an NTFS junction. The reason that I at least use the q... |
43902878 | Run Powershell script from URL without temporary file | 15 | 2017-05-10 21:15:56 | <p>I want to write a PowerShell script that runs a PowerShell script stored at a URL, passing both custom arguments and forwarding any arguments that are given to this PowerShell. Concretely, I can do:</p>
<pre><code>$VAR=Invoke-WebRequest http://example.com/powershell.ps1
$TEMP=New-TemporaryFile
$FILE=$TEMP.FullName ... | 33,485 | 160,673 | 2025-05-13 08:06:38 | 43,903,244 | 14 | 2017-05-10 21:47:11 | 3,425,553 | 2017-05-16 21:36:09 | https://stackoverflow.com/q/43902878 | https://stackoverflow.com/a/43903244 | <p>You can convert content to script block and then invoke it as command with arguments </p>
<pre><code>$Script = Invoke-WebRequest 'http://example.com/powershell.ps1'
$ScriptBlock = [Scriptblock]::Create($Script.Content)
Invoke-Command -ScriptBlock $ScriptBlock -ArgumentList ($args + @('someargument'))
</code></pre>
| <p>You can convert content to script block and then invoke it as command with arguments </p> <pre><code>$Script = Invoke-WebRequest 'http://example.com/powershell.ps1' $ScriptBlock = [Scriptblock]::Create($Script.Content) Invoke-Command -ScriptBlock $ScriptBlock -ArgumentList ($args + @('someargument')) </code></pre> | 526 | powershell | <h1>Run Powershell script from URL without temporary file</h1>
<p>I want to write a PowerShell script that runs a PowerShell script stored at a URL, passing both custom arguments and forwarding any arguments that are given to this PowerShell. Concretely, I can do:</p>
<pre><code>$VAR=Invoke-WebRequest http://example.c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,596 | bash | # Run Powershell script from URL without temporary file
I want to write a PowerShell script that runs a PowerShell script stored at a URL, passing both custom arguments and forwarding any arguments that are given to this PowerShell. Concretely, I can do:
```
$VAR=Invoke-WebRequest http://example.com/powershell.ps1
$T... | You can convert content to script block and then invoke it as command with arguments
```
$Script = Invoke-WebRequest 'http://example.com/powershell.ps1'
$ScriptBlock = [Scriptblock]::Create($Script.Content)
Invoke-Command -ScriptBlock $ScriptBlock -ArgumentList ($args + @('someargument'))
``` |
41553303 | Pass groovy variable to shell script | 15 | 2017-01-09 17:11:56 | <p>I just started learning groovy.I want to pass the svnSourcePath and svnDestPath to shell script in the svn copy command. But URL not rendered.</p>
<pre><code>node {
stage 'Copy Svn code'
def svnSourcePath = "${svnBaseURL}${svnAppCode}${svnEnvDev}${SVN_DEV_PACKAGE}"
def svnDestPath = "${svnBaseURL}${svnAppCode}${s... | 29,277 | 905,628 | 2022-12-26 06:32:42 | 41,597,369 | 14 | 2017-01-11 17:43:41 | 905,628 | 2017-01-11 17:43:41 | https://stackoverflow.com/q/41553303 | https://stackoverflow.com/a/41597369 | <p>added the single quotes and plus operater('+ variable +') around the variable. Now it is working</p>
<pre><code>svn copy '''+svnSourcePath+' '+svnDestPath+''' -m 'promote dev to test' --username $SVN_USER --password $SVN_PWD '''
</code></pre>
| <p>added the single quotes and plus operater('+ variable +') around the variable. Now it is working</p> <pre><code>svn copy '''+svnSourcePath+' '+svnDestPath+''' -m 'promote dev to test' --username $SVN_USER --password $SVN_PWD ''' </code></pre> | 390, 849, 64999, 79229 | cloudbees, groovy, jenkins, shell | <h1>Pass groovy variable to shell script</h1>
<p>I just started learning groovy.I want to pass the svnSourcePath and svnDestPath to shell script in the svn copy command. But URL not rendered.</p>
<pre><code>node {
stage 'Copy Svn code'
def svnSourcePath = "${svnBaseURL}${svnAppCode}${svnEnvDev}${SVN_DEV_PACKAGE}"
de... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,597 | bash | # Pass groovy variable to shell script
I just started learning groovy.I want to pass the svnSourcePath and svnDestPath to shell script in the svn copy command. But URL not rendered.
```
node {
stage 'Copy Svn code'
def svnSourcePath = "${svnBaseURL}${svnAppCode}${svnEnvDev}${SVN_DEV_PACKAGE}"
def svnDestPath = "${s... | added the single quotes and plus operater('+ variable +') around the variable. Now it is working
```
svn copy '''+svnSourcePath+' '+svnDestPath+''' -m 'promote dev to test' --username $SVN_USER --password $SVN_PWD '''
``` |
40165593 | What is a sourced shell function? | 15 | 2016-10-20 22:34:51 | <p>In the nvm <a href="https://github.com/creationix/nvm/blob/master/README.markdown" rel="noreferrer">README.markdown</a> it says</p>
<blockquote>
<p>Please note that <code>which nvm</code> will not work, since <code>nvm</code> is a sourced shell
function, not an executable binary.</p>
</blockquote>
<p>What I fo... | 1,338 | 3,885,927 | 2016-10-20 23:20:54 | 40,165,622 | 14 | 2016-10-20 22:37:06 | 14,122 | 2016-10-20 22:44:03 | https://stackoverflow.com/q/40165593 | https://stackoverflow.com/a/40165622 | <p>This verbiage is sloppy. <code>nvm</code> is simply a shell function defined by sourcing the file in which that function is defined. That doesn't change the function in any qualitative way: It would be the same function, with all the same behaviors, if you'd typed it in by hand, so applying "sourced" as a modifier i... | <p>This verbiage is sloppy. <code>nvm</code> is simply a shell function defined by sourcing the file in which that function is defined. That doesn't change the function in any qualitative way: It would be the same function, with all the same behaviors, if you'd typed it in by hand, so applying "sourced" as a modifier i... | 387, 81748 | bash, nvm | <h1>What is a sourced shell function?</h1>
<p>In the nvm <a href="https://github.com/creationix/nvm/blob/master/README.markdown" rel="noreferrer">README.markdown</a> it says</p>
<blockquote>
<p>Please note that <code>which nvm</code> will not work, since <code>nvm</code> is a sourced shell
function, not an executa... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,598 | bash | # What is a sourced shell function?
In the nvm [README.markdown](https://github.com/creationix/nvm/blob/master/README.markdown) it says
> Please note that `which nvm` will not work, since `nvm` is a sourced shell
> function, not an executable binary.
What I found is the nvm install process will update the `.bashrc` ... | This verbiage is sloppy. `nvm` is simply a shell function defined by sourcing the file in which that function is defined. That doesn't change the function in any qualitative way: It would be the same function, with all the same behaviors, if you'd typed it in by hand, so applying "sourced" as a modifier is a bit mislea... |
17916201 | Background spawned process in Expect | 15 | 2013-07-29 04:43:19 | <p>I'm using expect to start an application on my server:</p>
<pre><code>#!/usr/bin/expect
set timeout -1
spawn "bin/start-all.sh"
expect {
-re "Found MongoDB in" { send "y\r"; exp_continue }
-re "Found Hadoop in" { send "y\r"; exp_continue }
-re "Going to start Hadoop" { interact }
}
</code></pre>
<p>I... | 11,517 | 739,282 | 2019-09-24 00:39:18 | 32,545,624 | 14 | 2015-09-13 02:04:20 | 1,296,044 | 2017-04-07 03:38:16 | https://stackoverflow.com/q/17916201 | https://stackoverflow.com/a/32545624 | <p>I had the same problem and figured this out.</p>
<p>When <code>expect</code> exits, it sends a <code>SIGHUP</code> (hangup signal) to the spawned subprocess. By default, this <code>SIGHUP</code> causes termination of the spawned process.</p>
<p>If you want the underlying process not to die from <code>SIGHUP</code>... | <p>I had the same problem and figured this out.</p> <p>When <code>expect</code> exits, it sends a <code>SIGHUP</code> (hangup signal) to the spawned subprocess. By default, this <code>SIGHUP</code> causes termination of the spawned process.</p> <p>If you want the underlying process not to die from <code>SIGHUP</code>... | 34, 390, 5881, 9048, 15292 | background-process, expect, shell, tcl, unix | <h1>Background spawned process in Expect</h1>
<p>I'm using expect to start an application on my server:</p>
<pre><code>#!/usr/bin/expect
set timeout -1
spawn "bin/start-all.sh"
expect {
-re "Found MongoDB in" { send "y\r"; exp_continue }
-re "Found Hadoop in" { send "y\r"; exp_continue }
-re "Going to st... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,599 | bash | # Background spawned process in Expect
I'm using expect to start an application on my server:
```
#!/usr/bin/expect
set timeout -1
spawn "bin/start-all.sh"
expect {
-re "Found MongoDB in" { send "y\r"; exp_continue }
-re "Found Hadoop in" { send "y\r"; exp_continue }
-re "Going to start Hadoop" { intera... | I had the same problem and figured this out.
When `expect` exits, it sends a `SIGHUP` (hangup signal) to the spawned subprocess. By default, this `SIGHUP` causes termination of the spawned process.
If you want the underlying process not to die from `SIGHUP` you have two easy options. Both work well:
1) Ask `expect` ... |
26797651 | Creation of .ebextensions folder in aws elastic beanstalk | 15 | 2014-11-07 09:06:44 | <p>I am trying to deploy a shellscript script to install a program when autoscaling triggers on aws elastic beanstalk.</p>
<p>I have searched on google and it all points to the creation of .ebextensions to use a config file to install the program upon start up
May i know how do i create this?</p>
<p>Many thanks for t... | 20,741 | 4,226,241 | 2014-11-11 09:32:58 | 26,804,625 | 14 | 2014-11-07 15:32:25 | 3,107,308 | 2014-11-07 15:32:25 | https://stackoverflow.com/q/26797651 | https://stackoverflow.com/a/26804625 | <p>You need to do the following (obviously catering for your requirements):</p>
<p>In the root on your packaged software create a folder called <strong>.ebextensions</strong></p>
<pre><code>drwxr-xr-x 4 root root 4096 Sep 30 13:39 .
dr-xr-x--- 7 root root 4096 Nov 4 15:22 ..
drwxr-xr-x 2 root root 4096 N... | <p>You need to do the following (obviously catering for your requirements):</p> <p>In the root on your packaged software create a folder called <strong>.ebextensions</strong></p> <pre><code>drwxr-xr-x 4 root root 4096 Sep 30 13:39 . dr-xr-x--- 7 root root 4096 Nov 4 15:22 .. drwxr-xr-x 2 root root 4096 N... | 390, 33388, 105747 | amazon-elastic-beanstalk, amazon-web-services, shell | <h1>Creation of .ebextensions folder in aws elastic beanstalk</h1>
<p>I am trying to deploy a shellscript script to install a program when autoscaling triggers on aws elastic beanstalk.</p>
<p>I have searched on google and it all points to the creation of .ebextensions to use a config file to install the program upon ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,600 | bash | # Creation of .ebextensions folder in aws elastic beanstalk
I am trying to deploy a shellscript script to install a program when autoscaling triggers on aws elastic beanstalk.
I have searched on google and it all points to the creation of .ebextensions to use a config file to install the program upon start up
May i k... | You need to do the following (obviously catering for your requirements):
In the root on your packaged software create a folder called **.ebextensions**
```
drwxr-xr-x 4 root root 4096 Sep 30 13:39 .
dr-xr-x--- 7 root root 4096 Nov 4 15:22 ..
drwxr-xr-x 2 root root 4096 Nov 4 15:22 .ebextensions
```
In ... |
18477785 | Bash: Why does parent script not terminate on SIGINT when child script traps SIGINT? | 15 | 2013-08-28 00:59:29 | <p>script1.sh:</p>
<pre><code> #!/bin/bash
./script2.sh
echo after-script
</code></pre>
<p>script2.sh:</p>
<pre><code>#!/bin/bash
function handler {
exit 130
}
trap handler SIGINT
while true; do true; done
</code></pre>
<p>When I start script1.sh from a terminal, and then use <kbd>Ctrl</kbd>+<kbd>C</kbd>... | 4,255 | 1,109,986 | 2020-02-07 23:14:54 | 18,479,195 | 14 | 2013-08-28 03:59:12 | 1,162,501 | 2013-08-28 19:23:25 | https://stackoverflow.com/q/18477785 | https://stackoverflow.com/a/18479195 | <p><strong>New answer:</strong></p>
<p>This question is far more interesting than I originally suspected. The answer is essentially given here:</p>
<p><a href="https://stackoverflow.com/questions/4717118/what-happens-to-a-sigint-c-when-sent-to-a-perl-script-containing-children">What happens to a SIGINT (^C) when sen... | <p><strong>New answer:</strong></p> <p>This question is far more interesting than I originally suspected. The answer is essentially given here:</p> <p><a href="https://stackoverflow.com/questions/4717118/what-happens-to-a-sigint-c-when-sent-to-a-perl-script-containing-children">What happens to a SIGINT (^C) when sen... | 58, 387, 5910 | bash, linux, process | <h1>Bash: Why does parent script not terminate on SIGINT when child script traps SIGINT?</h1>
<p>script1.sh:</p>
<pre><code> #!/bin/bash
./script2.sh
echo after-script
</code></pre>
<p>script2.sh:</p>
<pre><code>#!/bin/bash
function handler {
exit 130
}
trap handler SIGINT
while true; do true; done
</code... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,601 | bash | # Bash: Why does parent script not terminate on SIGINT when child script traps SIGINT?
script1.sh:
```
#!/bin/bash
./script2.sh
echo after-script
```
script2.sh:
```
#!/bin/bash
function handler {
exit 130
}
trap handler SIGINT
while true; do true; done
```
When I start script1.sh from a terminal, and ... | **New answer:**
This question is far more interesting than I originally suspected. The answer is essentially given here:
[What happens to a SIGINT (^C) when sent to a perl script containing children?](https://stackoverflow.com/questions/4717118/what-happens-to-a-sigint-c-when-sent-to-a-perl-script-containing-children... |
14066992 | What does minus mean in "exec 3>&-" and how do I use it? | 15 | 2012-12-28 08:57:12 | <p>I often have trouble figuring out certain language constructs because they won't register when googling or duckduckgoing them. With a bit of experimenting, it's often simple to figure it out, but I don't get this one.</p>
<p>I often see stuff like <code>2>&1</code> or <code>3>&-</code> in bash scripts... | 16,979 | 754,174 | 2012-12-28 09:16:32 | 14,067,174 | 14 | 2012-12-28 09:15:00 | 1,120,147 | 2012-12-28 09:15:00 | https://stackoverflow.com/q/14066992 | https://stackoverflow.com/a/14067174 | <ol>
<li><code>2>&1</code> means that stderr is redirected to stdout</li>
<li><code>3>&-</code> means that file descriptor 3, opened for writing(same as stdout), is closed.</li>
</ol>
<p>You can see more examples of redirection <a href="http://www.linuxtopia.org/online_books/advanced_bash_scripting_guide... | <ol> <li><code>2>&1</code> means that stderr is redirected to stdout</li> <li><code>3>&-</code> means that file descriptor 3, opened for writing(same as stdout), is closed.</li> </ol> <p>You can see more examples of redirection <a href="http://www.linuxtopia.org/online_books/advanced_bash_scripting_guide... | 387, 391, 4867, 10327, 31901 | bash, http-redirect, sh, stdout, terminal | <h1>What does minus mean in "exec 3>&-" and how do I use it?</h1>
<p>I often have trouble figuring out certain language constructs because they won't register when googling or duckduckgoing them. With a bit of experimenting, it's often simple to figure it out, but I don't get this one.</p>
<p>I often see stuff like <c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,602 | bash | # What does minus mean in "exec 3>&-" and how do I use it?
I often have trouble figuring out certain language constructs because they won't register when googling or duckduckgoing them. With a bit of experimenting, it's often simple to figure it out, but I don't get this one.
I often see stuff like `2>&1` or `3>&-` i... | 1. `2>&1` means that stderr is redirected to stdout
2. `3>&-` means that file descriptor 3, opened for writing(same as stdout), is closed.
You can see more examples of redirection [here](http://www.linuxtopia.org/online_books/advanced_bash_scripting_guide/x13082.html)
3. As for questions number 3, I think [this](http... |
12922033 | The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) | 15 | 2012-10-16 19:24:21 | <p>Occasionally I get this error when working on remote computers. It's hit or miss on which computer I get it on. But I am able to ping the computer and test-connection pans out. For example, the computer I got this error on today I was able to get to yesterday. I know the computer is on because It's right next me... | 248,155 | 1,165,268 | 2022-04-05 23:43:33 | 12,923,953 | 14 | 2012-10-16 21:46:26 | 1,529,339 | 2012-10-25 23:11:33 | https://stackoverflow.com/q/12922033 | https://stackoverflow.com/a/12923953 | <p>Check to see if the <code>Remote Procedure Call (RPC)</code> service is running. If it is, then it's a firewall issue between your workstation and the server. You can test it by temporary disabling the firewall and retrying the command. </p>
<p>Edit after comment:</p>
<p>Ok, it's a firewall issue. You'll have t... | <p>Check to see if the <code>Remote Procedure Call (RPC)</code> service is running. If it is, then it's a firewall issue between your workstation and the server. You can test it by temporary disabling the firewall and retrying the command. </p> <p>Edit after comment:</p> <p>Ok, it's a firewall issue. You'll have t... | 526, 794 | network-programming, powershell | <h1>The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)</h1>
<p>Occasionally I get this error when working on remote computers. It's hit or miss on which computer I get it on. But I am able to ping the computer and test-connection pans out. For example, the computer I got this error on today I was ab... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,603 | bash | # The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
Occasionally I get this error when working on remote computers. It's hit or miss on which computer I get it on. But I am able to ping the computer and test-connection pans out. For example, the computer I got this error on today I was able to get to... | Check to see if the `Remote Procedure Call (RPC)` service is running. If it is, then it's a firewall issue between your workstation and the server. You can test it by temporary disabling the firewall and retrying the command.
Edit after comment:
Ok, it's a firewall issue. You'll have to either limit the ports WMI/RPC... |
8600958 | Bash: Variable Expansion in Single Quote / Double Quote | 15 | 2011-12-22 08:04:33 | <p>I want to add a variable <code>${date}</code> in the following bash script:</p>
<pre><code>ffmpeg -i in.flv -vf drawtext="fontfile=Sans.ttf:text='Today is ${date}':fontsize=6" out.flv
</code></pre>
<p>Obviously, <code>${date}</code> won't expand in single quote, <b>please also note that there is a double quote bey... | 19,558 | 1,111,275 | 2012-03-15 00:20:50 | 8,600,980 | 14 | 2011-12-22 08:08:08 | 387,981 | 2011-12-22 08:08:08 | https://stackoverflow.com/q/8600958 | https://stackoverflow.com/a/8600980 | <p><code>${date}</code> is expanded because it is between double quotes (the single quotes inside the double quotes are just characters)</p>
<p>Test it with:</p>
<pre><code>$ export date=SOMEVALUE
$ echo ffmpeg -i in.flv -vf drawtext="fontfile=/usr/share/fonts/dejavu/DejaVuLGCSans.ttf:text='Today is ${date}':fontsize... | <p><code>${date}</code> is expanded because it is between double quotes (the single quotes inside the double quotes are just characters)</p> <p>Test it with:</p> <pre><code>$ export date=SOMEVALUE $ echo ffmpeg -i in.flv -vf drawtext="fontfile=/usr/share/fonts/dejavu/DejaVuLGCSans.ttf:text='Today is ${date}':fontsize... | 58, 276, 367, 387, 3847 | bash, ffmpeg, linux, syntax, variables | <h1>Bash: Variable Expansion in Single Quote / Double Quote</h1>
<p>I want to add a variable <code>${date}</code> in the following bash script:</p>
<pre><code>ffmpeg -i in.flv -vf drawtext="fontfile=Sans.ttf:text='Today is ${date}':fontsize=6" out.flv
</code></pre>
<p>Obviously, <code>${date}</code> won't expand in s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,604 | bash | # Bash: Variable Expansion in Single Quote / Double Quote
I want to add a variable `${date}` in the following bash script:
```
ffmpeg -i in.flv -vf drawtext="fontfile=Sans.ttf:text='Today is ${date}':fontsize=6" out.flv
```
Obviously, `${date}` won't expand in single quote, **please also note that there is a double ... | `${date}` is expanded because it is between double quotes (the single quotes inside the double quotes are just characters)
Test it with:
```
$ export date=SOMEVALUE
$ echo ffmpeg -i in.flv -vf drawtext="fontfile=/usr/share/fonts/dejavu/DejaVuLGCSans.ttf:text='Today is ${date}':fontsize=6" out.flv
ffmpeg -i in.flv -vf... |
8031073 | How to check for no input in bash read? | 15 | 2011-11-06 22:59:04 | <p>I am looking for a conditional to avoid users from leaving an input value blank. Any suggestions?</p>
| 27,092 | 517,235 | 2022-12-29 12:30:23 | 8,031,091 | 14 | 2011-11-06 23:02:08 | 771,329 | 2011-11-06 23:02:08 | https://stackoverflow.com/q/8031073 | https://stackoverflow.com/a/8031091 | <p>No inputs (or even spaces I believe) get entered as empty strings, so check input while the input var is empty:</p>
<pre><code>input=
while [[ $input = "" ]]; do
read input
done
</code></pre>
| <p>No inputs (or even spaces I believe) get entered as empty strings, so check input while the input var is empty:</p> <pre><code>input= while [[ $input = "" ]]; do read input done </code></pre> | 387 | bash | <h1>How to check for no input in bash read?</h1>
<p>I am looking for a conditional to avoid users from leaving an input value blank. Any suggestions?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,605 | bash | # How to check for no input in bash read?
I am looking for a conditional to avoid users from leaving an input value blank. Any suggestions? | No inputs (or even spaces I believe) get entered as empty strings, so check input while the input var is empty:
```
input=
while [[ $input = "" ]]; do
read input
done
``` |
3789894 | Is command substitution $(foo) bashism? | 15 | 2010-09-24 18:29:59 | <p>There are two different syntaxes for command substitution,</p>
<pre><code>FOO=$(echo bar)
</code></pre>
<p>and</p>
<pre><code>FOO=`echo bar`
</code></pre>
<p>As far as I know, the first method is defined in Bash, while the second is defined in <code>sh</code>.</p>
<p>Consider the following use of command substi... | 3,942 | 360,899 | 2012-03-03 18:38:40 | 3,789,931 | 14 | 2010-09-24 18:36:02 | 422,597 | 2010-09-24 22:07:37 | https://stackoverflow.com/q/3789894 | https://stackoverflow.com/a/3789931 | <p>It's the same thing. So no it's not a bashism nor related to bash only.</p>
<blockquote>
<p><strong>Command Substitution</strong><br>
Command substitution allows the output of a command to be substituted in place of the command name itself. Command substitution occurs when the command is enclosed as follows:</p... | <p>It's the same thing. So no it's not a bashism nor related to bash only.</p> <blockquote> <p><strong>Command Substitution</strong><br> Command substitution allows the output of a command to be substituted in place of the command name itself. Command substitution occurs when the command is enclosed as follows:</p... | 387, 1993, 10327 | bash, posix, sh | <h1>Is command substitution $(foo) bashism?</h1>
<p>There are two different syntaxes for command substitution,</p>
<pre><code>FOO=$(echo bar)
</code></pre>
<p>and</p>
<pre><code>FOO=`echo bar`
</code></pre>
<p>As far as I know, the first method is defined in Bash, while the second is defined in <code>sh</code>.</p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,606 | bash | # Is command substitution $(foo) bashism?
There are two different syntaxes for command substitution,
```
FOO=$(echo bar)
```
and
```
FOO=`echo bar`
```
As far as I know, the first method is defined in Bash, while the second is defined in `sh`.
Consider the following use of command substitution in an `sh` script.
... | It's the same thing. So no it's not a bashism nor related to bash only.
> **Command Substitution**
> Command substitution allows the output of a command to be substituted in place of the command name itself. Command substitution occurs when the command is enclosed as follows:
>
> ```
> $(command)
> ```
>
> or ( ''ba... |
3462075 | Keep a file open forever within a bash script | 15 | 2010-08-11 19:29:05 | <p>I need a way to make a process keep a certain file open forever. Here's an example of what I have so far:</p>
<p><code>sleep 1000 > myfile &</code></p>
<p>It works for a thousand seconds, but really don't want to make some complicated sleep/loop statement. <a href="https://stackoverflow.com/questions/29351... | 16,327 | 125,380 | 2021-12-14 10:58:40 | 3,462,138 | 14 | 2010-08-11 19:36:55 | 119,280 | 2010-08-11 19:36:55 | https://stackoverflow.com/q/3462075 | https://stackoverflow.com/a/3462138 | <p>The reason that <code>cat>myfile&</code> works is because it re-directs standard input into a file. </p>
<p>if you launch it with an ampersand (in background), it won't get ANY input, including end-of-file, which means it will forever wait and print nothing to the output file.</p>
<p>You can get an equivale... | <p>The reason that <code>cat>myfile&</code> works is because it re-directs standard input into a file. </p> <p>if you launch it with an ampersand (in background), it won't get ANY input, including end-of-file, which means it will forever wait and print nothing to the output file.</p> <p>You can get an equivale... | 387 | bash | <h1>Keep a file open forever within a bash script</h1>
<p>I need a way to make a process keep a certain file open forever. Here's an example of what I have so far:</p>
<p><code>sleep 1000 > myfile &</code></p>
<p>It works for a thousand seconds, but really don't want to make some complicated sleep/loop statem... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,607 | bash | # Keep a file open forever within a bash script
I need a way to make a process keep a certain file open forever. Here's an example of what I have so far:
`sleep 1000 > myfile &`
It works for a thousand seconds, but really don't want to make some complicated sleep/loop statement. [This post](https://stackoverflow.com... | The reason that `cat>myfile&` works is because it re-directs standard input into a file.
if you launch it with an ampersand (in background), it won't get ANY input, including end-of-file, which means it will forever wait and print nothing to the output file.
You can get an equivalent effect, except WITHOUT dependency... |
3281999 | Format-List: sort properties by name | 15 | 2010-07-19 14:29:49 | <p>Is it possible to sort the output of the Format-List cmdlet by property name?<br>
Suppose that I have an object $x with two properties "A" and "B", and when I run Format-List with it I get</p>
<pre><code>(PS) > $x | Format-List
B : value b
A : value a
</code></pre>
<p>I would like to have</p>
<pre><code>(PS) &... | 30,252 | 15,622 | 2023-08-10 18:05:05 | 3,282,208 | 14 | 2010-07-19 14:57:49 | 323,582 | 2010-07-19 17:32:52 | https://stackoverflow.com/q/3281999 | https://stackoverflow.com/a/3282208 | <p>AFAIK, <code>Format-List</code> does not provide such an option.</p>
<p>For your particular example this should work:</p>
<pre><code>$x | Select-Object A, B | Format-List
</code></pre>
<p>If the property set is not fixed/known then the procedure will be more tricky with use of <code>Get-Member</code> and some pre... | <p>AFAIK, <code>Format-List</code> does not provide such an option.</p> <p>For your particular example this should work:</p> <pre><code>$x | Select-Object A, B | Format-List </code></pre> <p>If the property set is not fixed/known then the procedure will be more tricky with use of <code>Get-Member</code> and some pre... | 134, 526 | powershell, sorting | <h1>Format-List: sort properties by name</h1>
<p>Is it possible to sort the output of the Format-List cmdlet by property name?<br>
Suppose that I have an object $x with two properties "A" and "B", and when I run Format-List with it I get</p>
<pre><code>(PS) > $x | Format-List
B : value b
A : value a
</code></pre>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,608 | bash | # Format-List: sort properties by name
Is it possible to sort the output of the Format-List cmdlet by property name?
Suppose that I have an object $x with two properties "A" and "B", and when I run Format-List with it I get
```
(PS) > $x | Format-List
B : value b
A : value a
```
I would like to have
```
(PS) > $x... | AFAIK, `Format-List` does not provide such an option.
For your particular example this should work:
```
$x | Select-Object A, B | Format-List
```
If the property set is not fixed/known then the procedure will be more tricky with use of `Get-Member` and some preprocessing making sorted parameter array for `Select-Obj... |
63432023 | Running powershell script inside a bash script | 14 | 2020-08-16 00:30:39 | <p>In Powershell-<br/>
How do I run a powershell script(.ps1) inside a bash script(.sh)<br/>
I can run just the powershell script-<br/>
& .\scriptfile.ps1 <br/>
and just the bash script.<br/>
But when I try to run the powershell inside the bash script, I get <br/>
file.ps1 : command not found<br/>
Both scripts are ... | 50,647 | 2,296,291 | 2024-04-17 15:00:42 | 63,432,492 | 14 | 2020-08-16 02:12:14 | 607,470 | 2020-08-16 04:05:21 | https://stackoverflow.com/q/63432023 | https://stackoverflow.com/a/63432492 | <p>Are you trying</p>
<pre><code>.\scriptfile.ps1
</code></pre>
<p>?
That should be</p>
<pre><code>./scriptfile.ps1
</code></pre>
<p>But also, when invoking powershell from a bash script, you'll need to either run the pwsh command like</p>
<pre><code>pwsh ./scriptfile.ps1
</code></pre>
<p>or the first line of your Powe... | <p>Are you trying</p> <pre><code>.\scriptfile.ps1 </code></pre> <p>? That should be</p> <pre><code>./scriptfile.ps1 </code></pre> <p>But also, when invoking powershell from a bash script, you'll need to either run the pwsh command like</p> <pre><code>pwsh ./scriptfile.ps1 </code></pre> <p>or the first line of your Powe... | 387, 526 | bash, powershell | <h1>Running powershell script inside a bash script</h1>
<p>In Powershell-<br/>
How do I run a powershell script(.ps1) inside a bash script(.sh)<br/>
I can run just the powershell script-<br/>
& .\scriptfile.ps1 <br/>
and just the bash script.<br/>
But when I try to run the powershell inside the bash script, I get <... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,609 | bash | # Running powershell script inside a bash script
In Powershell-
How do I run a powershell script(.ps1) inside a bash script(.sh)
I can run just the powershell script-
& .\scriptfile.ps1
and just the bash script.
But when I try to run the powershell inside the bash script, I get
file.ps1 : command not fou... | Are you trying
```
.\scriptfile.ps1
```
?
That should be
```
./scriptfile.ps1
```
But also, when invoking powershell from a bash script, you'll need to either run the pwsh command like
```
pwsh ./scriptfile.ps1
```
or the first line of your Powershell script file should be a shebang (interpreter directive) like:
... |
48537171 | Packer can't execute shell provisioner as sudo | 14 | 2018-01-31 07:55:47 | <p>I have a <code>shell provisioner</code> in packer connected to a box with user <code>vagrant</code></p>
<pre class="lang-json prettyprint-override"><code>{
"environment_vars": [
"HOME_DIR=/home/vagrant"
],
"expect_disconnect": true,
"scripts": [
"scripts/foo.sh"
],
"type": "shell"
}
</code></pre... | 31,365 | 2,587,904 | 2020-09-19 07:11:38 | 48,540,659 | 14 | 2018-01-31 11:06:59 | 226,174 | 2018-01-31 11:06:59 | https://stackoverflow.com/q/48537171 | https://stackoverflow.com/a/48540659 | <p>You should override the <a href="https://www.packer.io/docs/provisioners/shell.html#execute_command" rel="noreferrer">execute_command</a>. Example:</p>
<pre><code> "provisioners": [
{
"execute_command": "echo 'vagrant' | {{.Vars}} sudo -S -E sh -eux '{{.Path}}'",
"scripts": [
"scripts/foo.s... | <p>You should override the <a href="https://www.packer.io/docs/provisioners/shell.html#execute_command" rel="noreferrer">execute_command</a>. Example:</p> <pre><code> "provisioners": [ { "execute_command": "echo 'vagrant' | {{.Vars}} sudo -S -E sh -eux '{{.Path}}'", "scripts": [ "scripts/foo.s... | 390, 8814, 12079, 24433 | packer, provisioning, root, shell | <h1>Packer can't execute shell provisioner as sudo</h1>
<p>I have a <code>shell provisioner</code> in packer connected to a box with user <code>vagrant</code></p>
<pre class="lang-json prettyprint-override"><code>{
"environment_vars": [
"HOME_DIR=/home/vagrant"
],
"expect_disconnect": true,
"scripts": [
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,610 | bash | # Packer can't execute shell provisioner as sudo
I have a `shell provisioner` in packer connected to a box with user `vagrant`
```
{
"environment_vars": [
"HOME_DIR=/home/vagrant"
],
"expect_disconnect": true,
"scripts": [
"scripts/foo.sh"
],
"type": "shell"
}
```
where the content of the script ... | You should override the [execute_command](https://www.packer.io/docs/provisioners/shell.html#execute_command). Example:
```
"provisioners": [
{
"execute_command": "echo 'vagrant' | {{.Vars}} sudo -S -E sh -eux '{{.Path}}'",
"scripts": [
"scripts/foo.sh"
],
"type": "shell"
}
... |
45118089 | Git - Rename multiple branches | 14 | 2017-07-15 12:15:32 | <p>Here we have a git repo which has multiple branches which start with the same prefix just like this: </p>
<pre><code>pfx.branchName1
pfx.branchName2
pfx.branchName3
...
</code></pre>
<p>So the question is how to quickly remove all the prefixes ("pfx.") from all the branches and get something like this: </p... | 3,848 | 5,935,112 | 2021-05-26 12:29:46 | 45,118,832 | 14 | 2017-07-15 13:38:02 | 5,935,112 | 2021-05-26 12:29:46 | https://stackoverflow.com/q/45118089 | https://stackoverflow.com/a/45118832 | <p>Found an universal command that searches for the branches which contain our desired string (e.g. <code>"StringToFind"</code>) and renames by replacing that part with the string we want (e.g. <code>"ReplaceWith"</code>):</p>
<pre><code>git branch | grep "StringToFind" | awk '{original=$1... | <p>Found an universal command that searches for the branches which contain our desired string (e.g. <code>"StringToFind"</code>) and renames by replacing that part with the string we want (e.g. <code>"ReplaceWith"</code>):</p> <pre><code>git branch | grep "StringToFind" | awk '{original=$1... | 119, 387 | bash, git | <h1>Git - Rename multiple branches</h1>
<p>Here we have a git repo which has multiple branches which start with the same prefix just like this: </p>
<pre><code>pfx.branchName1
pfx.branchName2
pfx.branchName3
...
</code></pre>
<p>So the question is how to quickly remove all the prefixes ("pfx.") from all the br... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,611 | bash | # Git - Rename multiple branches
Here we have a git repo which has multiple branches which start with the same prefix just like this:
```
pfx.branchName1
pfx.branchName2
pfx.branchName3
...
```
So the question is how to quickly remove all the prefixes ("pfx.") from all the branches and get something like this:... | Found an universal command that searches for the branches which contain our desired string (e.g. `"StringToFind"`) and renames by replacing that part with the string we want (e.g. `"ReplaceWith"`):
```
git branch | grep "StringToFind" | awk '{original=$1; sub("StringToFind","ReplaceWith"); print original, $1}' | xargs... |
40010820 | Loop over files in HDFS directory | 14 | 2016-10-13 01:22:13 | <p>I need to loop over all csv files in a Hadoop file system. I can list all of the files in a HDFS directory with</p>
<pre><code>> hadoop fs -ls /path/to/directory
Found 2 items
drwxr-xr-x - hadoop hadoop 2 2016-10-12 16:20 /path/to/directory/tmp
-rwxr-xr-x 3 hadoop hadoop 4691945927 2016-10-12 19:37 ... | 17,456 | 3,891,715 | 2021-08-16 18:02:10 | 40,011,087 | 14 | 2016-10-13 02:00:55 | 6,928,591 | 2016-10-13 02:00:55 | https://stackoverflow.com/q/40010820 | https://stackoverflow.com/a/40011087 | <p>This should work</p>
<pre><code>for filename in `hadoop fs -ls /path/to/directory | awk '{print $NF}' | grep .csv$ | tr '\n' ' '`
do echo $filename; done
</code></pre>
| <p>This should work</p> <pre><code>for filename in `hadoop fs -ls /path/to/directory | awk '{print $NF}' | grep .csv$ | tr '\n' ' '` do echo $filename; done </code></pre> | 387, 1995, 40255 | bash, hadoop, hdfs | <h1>Loop over files in HDFS directory</h1>
<p>I need to loop over all csv files in a Hadoop file system. I can list all of the files in a HDFS directory with</p>
<pre><code>> hadoop fs -ls /path/to/directory
Found 2 items
drwxr-xr-x - hadoop hadoop 2 2016-10-12 16:20 /path/to/directory/tmp
-rwxr-xr-x 3... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,612 | bash | # Loop over files in HDFS directory
I need to loop over all csv files in a Hadoop file system. I can list all of the files in a HDFS directory with
```
> hadoop fs -ls /path/to/directory
Found 2 items
drwxr-xr-x - hadoop hadoop 2 2016-10-12 16:20 /path/to/directory/tmp
-rwxr-xr-x 3 hadoop hadoop 46919459... | This should work
```
for filename in `hadoop fs -ls /path/to/directory | awk '{print $NF}' | grep .csv$ | tr '\n' ' '`
do echo $filename; done
``` |
37141039 | Is there any difference between $@ and "$@"? | 14 | 2016-05-10 14:11:38 | <p>Is there any difference between <code>$@</code> and <code>"$@"</code>? </p>
<p>I understand there may be differences for non special characters, but what about the <code>@</code> sign with input arguments?</p>
| 8,702 | 2,098,831 | 2016-05-10 14:40:44 | 37,141,139 | 14 | 2016-05-10 14:15:59 | 1,983,854 | 2016-05-10 14:37:14 | https://stackoverflow.com/q/37141039 | https://stackoverflow.com/a/37141139 | <p>Yes!</p>
<pre><code>$ cat a.sh
echo "$@"
echo $@
</code></pre>
<p>Let's run it:</p>
<pre><code>$ ./a.sh 2 "3 4" 5
2 3 4 5 # output for "$@"
2 3 4 5 # output for $@ -> spaces are lost!
</code></pre>
<p>As you can see, using <code>$@</code> makes the parameters to ... | <p>Yes!</p> <pre><code>$ cat a.sh echo "$@" echo $@ </code></pre> <p>Let's run it:</p> <pre><code>$ ./a.sh 2 "3 4" 5 2 3 4 5 # output for "$@" 2 3 4 5 # output for $@ -> spaces are lost! </code></pre> <p>As you can see, using <code>$@</code> makes the parameters to ... | 387, 19863 | bash, expansion | <h1>Is there any difference between $@ and "$@"?</h1>
<p>Is there any difference between <code>$@</code> and <code>"$@"</code>? </p>
<p>I understand there may be differences for non special characters, but what about the <code>@</code> sign with input arguments?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,613 | bash | # Is there any difference between $@ and "$@"?
Is there any difference between `$@` and `"$@"`?
I understand there may be differences for non special characters, but what about the `@` sign with input arguments? | Yes!
```
$ cat a.sh
echo "$@"
echo $@
```
Let's run it:
```
$ ./a.sh 2 "3 4" 5
2 3 4 5 # output for "$@"
2 3 4 5 # output for $@ -> spaces are lost!
```
As you can see, using `$@` makes the parameters to "lose" some content when used as a parameter. See -for example- [... |
32841846 | Get the return code of a C program in my shell program | 14 | 2015-09-29 10:42:27 | <p>Suppose I have a C program named <code>Foo.c</code> which is printing few things and returning a value named <code>rc</code> which I am executing in my shell program as follows :</p>
<p><code>foobar=$(Foo | tail -1)</code></p>
<p>Now, the variable foobar has the last printed value of the program <code>Foo</code>. ... | 9,686 | 2,874,172 | 2015-09-30 07:07:18 | 32,843,127 | 14 | 2015-09-29 11:46:14 | 1,205,132 | 2015-09-29 11:46:14 | https://stackoverflow.com/q/32841846 | https://stackoverflow.com/a/32843127 | <p>You can use "set -o pipefail" option.</p>
<pre><code>[root@myserver Test]# set -o pipefail
[root@myserver Test]# ./a.out | tail -l
[root@myserver Test]# echo $?
100
</code></pre>
<p>Here my program a.out returns 100. </p>
<p>Or another options is to use pipestatus environment variable. You can read about it here.... | <p>You can use "set -o pipefail" option.</p> <pre><code>[root@myserver Test]# set -o pipefail [root@myserver Test]# ./a.out | tail -l [root@myserver Test]# echo $? 100 </code></pre> <p>Here my program a.out returns 100. </p> <p>Or another options is to use pipestatus environment variable. You can read about it here.... | 8, 387, 390 | bash, c, shell | <h1>Get the return code of a C program in my shell program</h1>
<p>Suppose I have a C program named <code>Foo.c</code> which is printing few things and returning a value named <code>rc</code> which I am executing in my shell program as follows :</p>
<p><code>foobar=$(Foo | tail -1)</code></p>
<p>Now, the variable foo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,614 | bash | # Get the return code of a C program in my shell program
Suppose I have a C program named `Foo.c` which is printing few things and returning a value named `rc` which I am executing in my shell program as follows :
`foobar=$(Foo | tail -1)`
Now, the variable foobar has the last printed value of the program `Foo`. But... | You can use "set -o pipefail" option.
```
[root@myserver Test]# set -o pipefail
[root@myserver Test]# ./a.out | tail -l
[root@myserver Test]# echo $?
100
```
Here my program a.out returns 100.
Or another options is to use pipestatus environment variable. You can read about it here.
<http://www.linuxnix.com/2011/03/p... |
31547104 | How to get the value of the PATH environment variable without expanding tokens? | 14 | 2015-07-21 18:40:36 | <p>I'm writing a PowerShell script to convert folder names to short names in the PATH environment variable and save the changes. It works correctly for explicit paths, but it expands tokens, so when I save my changes the tokens are replaced with explicit paths. I'd like to preserve the tokens.</p>
<p>For example, if... | 4,461 | 4,154 | 2018-10-24 21:17:31 | 31,548,093 | 14 | 2015-07-21 19:36:35 | 517,852 | 2015-07-21 21:54:46 | https://stackoverflow.com/q/31547104 | https://stackoverflow.com/a/31548093 | <p>This isn't PowerShell per se, but a "feature" of the underlying Windows registry. The Path variable is of type REG_EXPAND_SZ which automatically expands environment variables on retrieval. I don't think you can get around it with the built-in cmdlets, but you can with the .NET <code>Microsoft.Win32.Registry</code> A... | <p>This isn't PowerShell per se, but a "feature" of the underlying Windows registry. The Path variable is of type REG_EXPAND_SZ which automatically expands environment variables on retrieval. I don't think you can get around it with the built-in cmdlets, but you can with the .NET <code>Microsoft.Win32.Registry</code> A... | 526, 9013 | environment-variables, powershell | <h1>How to get the value of the PATH environment variable without expanding tokens?</h1>
<p>I'm writing a PowerShell script to convert folder names to short names in the PATH environment variable and save the changes. It works correctly for explicit paths, but it expands tokens, so when I save my changes the tokens ar... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,615 | bash | # How to get the value of the PATH environment variable without expanding tokens?
I'm writing a PowerShell script to convert folder names to short names in the PATH environment variable and save the changes. It works correctly for explicit paths, but it expands tokens, so when I save my changes the tokens are replaced... | This isn't PowerShell per se, but a "feature" of the underlying Windows registry. The Path variable is of type REG_EXPAND_SZ which automatically expands environment variables on retrieval. I don't think you can get around it with the built-in cmdlets, but you can with the .NET `Microsoft.Win32.Registry` APIs. Use the `... |
24134530 | how to exclude multiple pattern using grep | 14 | 2014-06-10 06:44:07 | <p>I want to exclude both <code>"*log*"</code> and <code>./tags</code> from grep. </p>
<p>What i do is:</p>
<pre><code>grep -rI "PatternToSearch" ./path --exclude="*log*"
</code></pre>
<p>or this:</p>
<pre><code>grep -rI "PatternToSearch" ./path --exclude="tags"
</code></pre>
<p>is it possible to merge both exclu... | 18,792 | 2,657,927 | 2025-01-22 19:19:52 | 24,155,448 | 14 | 2014-06-11 05:47:22 | 2,789,948 | 2014-06-11 05:47:22 | https://stackoverflow.com/q/24134530 | https://stackoverflow.com/a/24155448 | <p>Try below:</p>
<pre><code> grep -rI "PatternToSearch" ./path --exclude={*log*,tags}
</code></pre>
<p>Just use "," to separate patterns.</p>
<p>Seems duplicated with <a href="https://stackoverflow.com/questions/10619160/how-do-i-use-the-grep-include-option-for-multiple-file-types">how do I use the grep --include o... | <p>Try below:</p> <pre><code> grep -rI "PatternToSearch" ./path --exclude={*log*,tags} </code></pre> <p>Just use "," to separate patterns.</p> <p>Seems duplicated with <a href="https://stackoverflow.com/questions/10619160/how-do-i-use-the-grep-include-option-for-multiple-file-types">how do I use the grep --include o... | 58, 390, 1271, 1796 | command, grep, linux, shell | <h1>how to exclude multiple pattern using grep</h1>
<p>I want to exclude both <code>"*log*"</code> and <code>./tags</code> from grep. </p>
<p>What i do is:</p>
<pre><code>grep -rI "PatternToSearch" ./path --exclude="*log*"
</code></pre>
<p>or this:</p>
<pre><code>grep -rI "PatternToSearch" ./path --exclude="tags"
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,616 | bash | # how to exclude multiple pattern using grep
I want to exclude both `"*log*"` and `./tags` from grep.
What i do is:
```
grep -rI "PatternToSearch" ./path --exclude="*log*"
```
or this:
```
grep -rI "PatternToSearch" ./path --exclude="tags"
```
is it possible to merge both exclude patterns in one grep? | Try below:
```
grep -rI "PatternToSearch" ./path --exclude={*log*,tags}
```
Just use "," to separate patterns.
Seems duplicated with [how do I use the grep --include option for multiple file types?](https://stackoverflow.com/questions/10619160/how-do-i-use-the-grep-include-option-for-multiple-file-types) |
16318211 | More succinct way of getting a registry value as a string than (Get-ItemProperty $key $valueName)._VALUENAME_? | 14 | 2013-05-01 12:37:45 | <p>The method for getting a value in a registry key from PowerShell is:</p>
<pre><code>Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion CommonFilesDir
</code></pre>
<p>However, that command returns some extra properties I don't usually want:</p>
<pre><code>CommonFilesDir : C:\Program Files\Common Fil... | 21,611 | 95,195 | 2019-01-29 21:15:20 | 18,806,379 | 14 | 2013-09-14 21:04:59 | 1,913,219 | 2013-09-14 21:04:59 | https://stackoverflow.com/q/16318211 | https://stackoverflow.com/a/18806379 | <p>I'm new to PowerShell, but it seems to work in PowerShell 2 and 3 if you leave out the registry value name in Get-ItemProperty, using the value name only as a property:</p>
<pre><code>(Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion).CommonFilesDir
</code></pre>
<p>or even shorter with the alias:<... | <p>I'm new to PowerShell, but it seems to work in PowerShell 2 and 3 if you leave out the registry value name in Get-ItemProperty, using the value name only as a property:</p> <pre><code>(Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion).CommonFilesDir </code></pre> <p>or even shorter with the alias:<... | 263, 526 | powershell, registry | <h1>More succinct way of getting a registry value as a string than (Get-ItemProperty $key $valueName)._VALUENAME_?</h1>
<p>The method for getting a value in a registry key from PowerShell is:</p>
<pre><code>Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion CommonFilesDir
</code></pre>
<p>However, that ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,617 | bash | # More succinct way of getting a registry value as a string than (Get-ItemProperty $key $valueName)._VALUENAME_?
The method for getting a value in a registry key from PowerShell is:
```
Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion CommonFilesDir
```
However, that command returns some extra proper... | I'm new to PowerShell, but it seems to work in PowerShell 2 and 3 if you leave out the registry value name in Get-ItemProperty, using the value name only as a property:
```
(Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion).CommonFilesDir
```
or even shorter with the alias:
```
(gp HKLM:\SOFTWARE\Mic... |
18508628 | How to install a windows service from command line specifying name and description? | 14 | 2013-08-29 10:35:44 | <p>I created a Windows service with Delphi for a client server application.</p>
<p>To install it I use</p>
<pre><code>c:\Test\MyService.exe /install (or /uninstall)
</code></pre>
<p>This installs the service and in Windows services it lists with "MyService" name and empty description.</p>
<p>How to define a differe... | 38,764 | 193,655 | 2014-09-10 21:33:48 | 18,508,828 | 14 | 2013-08-29 10:44:58 | 505,088 | 2013-08-29 10:50:35 | https://stackoverflow.com/q/18508628 | https://stackoverflow.com/a/18508828 | <p>Windows already ships with the utility that you need, namely <code>sc create</code>.</p>
<pre>
>sc create /?
DESCRIPTION:
Creates a service entry in the registry and Service Database.
USAGE:
sc create [service name] [binPath= ] ...
OPTIONS:
NOTE: The option name includes the equal sign.
A s... | <p>Windows already ships with the utility that you need, namely <code>sc create</code>.</p> <pre> >sc create /? DESCRIPTION: Creates a service entry in the registry and Service Database. USAGE: sc create [service name] [binPath= ] ... OPTIONS: NOTE: The option name includes the equal sign. A s... | 2596, 7839 | shellexecute, windows-services | <h1>How to install a windows service from command line specifying name and description?</h1>
<p>I created a Windows service with Delphi for a client server application.</p>
<p>To install it I use</p>
<pre><code>c:\Test\MyService.exe /install (or /uninstall)
</code></pre>
<p>This installs the service and in Windows s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,618 | bash | # How to install a windows service from command line specifying name and description?
I created a Windows service with Delphi for a client server application.
To install it I use
```
c:\Test\MyService.exe /install (or /uninstall)
```
This installs the service and in Windows services it lists with "MyService" name a... | Windows already ships with the utility that you need, namely `sc create`.
```
>sc create /?
DESCRIPTION:
Creates a service entry in the registry and Service Database.
USAGE:
sc create [service name] [binPath= ] ...
OPTIONS:
NOTE: The option name includes the equal sign.
A space is required bet... |
13359276 | echo to stderr and tee to log file? | 14 | 2012-11-13 10:41:51 | <p>In bash script,</p>
<blockquote>
<p>echo "error" 1>&2 | tee -a log</p>
</blockquote>
<p>will print stderr in screen but no log to file, how to do these at same time?</p>
| 15,311 | 735,035 | 2012-11-13 13:18:39 | 13,361,416 | 14 | 2012-11-13 13:18:39 | 1,057,909 | 2012-11-13 13:18:39 | https://stackoverflow.com/q/13359276 | https://stackoverflow.com/a/13361416 | <p>To echo the text to both the log file and stderr, <em>but not stdout</em>, try this:</p>
<pre><code>echo "error" | tee -a log 1>&2
</code></pre>
| <p>To echo the text to both the log file and stderr, <em>but not stdout</em>, try this:</p> <pre><code>echo "error" | tee -a log 1>&2 </code></pre> | 387 | bash | <h1>echo to stderr and tee to log file?</h1>
<p>In bash script,</p>
<blockquote>
<p>echo "error" 1>&2 | tee -a log</p>
</blockquote>
<p>will print stderr in screen but no log to file, how to do these at same time?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,619 | bash | # echo to stderr and tee to log file?
In bash script,
> echo "error" 1>&2 | tee -a log
will print stderr in screen but no log to file, how to do these at same time? | To echo the text to both the log file and stderr, *but not stdout*, try this:
```
echo "error" | tee -a log 1>&2
``` |
6686576 | Easiest way to produce guitar chords in linux and/or python | 14 | 2011-07-13 22:44:24 | <p>What i'm trying to achieve is playing a guitar chord from my python application. I know (or can calculate) the frequencies in the chord if needed.</p>
<p>I'm thinking that even if I do the low level leg work of producing multiple sine waves at the right frequencies it wont sound right due to the envelope needing to... | 5,445 | 384,388 | 2012-06-14 12:48:39 | 11,033,287 | 14 | 2012-06-14 12:43:12 | 1,456,232 | 2012-06-14 12:43:12 | https://stackoverflow.com/q/6686576 | https://stackoverflow.com/a/11033287 | <p>The manual gives this example:</p>
<pre><code>play -n synth pl G2 pl B2 pl D3 pl G3 pl D4 pl G4 \
delay 0 .05 .1 .15 .2 .25 remix - fade 0 4 .1 norm -1
</code></pre>
<p>This creates 6 simultaneous instances of synth (as separate audio channels), delays 5 of the channels by slightly increasing times,... | <p>The manual gives this example:</p> <pre><code>play -n synth pl G2 pl B2 pl D3 pl G3 pl D4 pl G4 \ delay 0 .05 .1 .15 .2 .25 remix - fade 0 4 .1 norm -1 </code></pre> <p>This creates 6 simultaneous instances of synth (as separate audio channels), delays 5 of the channels by slightly increasing times,... | 16, 58, 348, 387, 59202 | audio, bash, guitar, linux, python | <h1>Easiest way to produce guitar chords in linux and/or python</h1>
<p>What i'm trying to achieve is playing a guitar chord from my python application. I know (or can calculate) the frequencies in the chord if needed.</p>
<p>I'm thinking that even if I do the low level leg work of producing multiple sine waves at the... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,620 | bash | # Easiest way to produce guitar chords in linux and/or python
What i'm trying to achieve is playing a guitar chord from my python application. I know (or can calculate) the frequencies in the chord if needed.
I'm thinking that even if I do the low level leg work of producing multiple sine waves at the right frequenci... | The manual gives this example:
```
play -n synth pl G2 pl B2 pl D3 pl G3 pl D4 pl G4 \
delay 0 .05 .1 .15 .2 .25 remix - fade 0 4 .1 norm -1
```
This creates 6 simultaneous instances of synth (as separate audio channels), delays 5 of the channels by slightly increasing times, then mixes them down to a ... |
9506584 | convert scientific notation bash script | 14 | 2012-02-29 21:04:51 | <p>I have a awk script that grabs numbers that I want. But the problem is they are in this kind of format: 1.8200E+02 </p>
<p>In bash script this decimal notation is not supported so I was wonering anyone can help me with this problem.</p>
| 10,650 | 1,174,490 | 2017-08-02 15:18:53 | 9,506,733 | 14 | 2012-02-29 21:14:53 | 526,956 | 2012-02-29 21:28:18 | https://stackoverflow.com/q/9506584 | https://stackoverflow.com/a/9506733 | <p>My last answer was wrong, sorry about that. You can use printf for this:</p>
<pre><code>printf '%.0f' 1.8200E+02
182
</code></pre>
| <p>My last answer was wrong, sorry about that. You can use printf for this:</p> <pre><code>printf '%.0f' 1.8200E+02 182 </code></pre> | 387, 6250 | bash, decimal | <h1>convert scientific notation bash script</h1>
<p>I have a awk script that grabs numbers that I want. But the problem is they are in this kind of format: 1.8200E+02 </p>
<p>In bash script this decimal notation is not supported so I was wonering anyone can help me with this problem.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,621 | bash | # convert scientific notation bash script
I have a awk script that grabs numbers that I want. But the problem is they are in this kind of format: 1.8200E+02
In bash script this decimal notation is not supported so I was wonering anyone can help me with this problem. | My last answer was wrong, sorry about that. You can use printf for this:
```
printf '%.0f' 1.8200E+02
182
``` |
5546223 | Signals received by bash when terminal is closed | 14 | 2011-04-05 01:35:52 | <p>Use trap to capture signals like this:</p>
<pre><code>i=-1;while((++i<33));
do
trap "echo $i >> log.txt" $i;
done
</code></pre>
<p>And close the terminal by force.</p>
<p>The content in log.txt is then (under redhat linux):</p>
<blockquote>
<p>1</p>
<p>18</p>
<p>1</p>
<p>17</p>
... | 10,619 | 689,486 | 2011-04-06 13:41:57 | 5,547,386 | 14 | 2011-04-05 04:59:02 | 15,168 | 2011-04-05 08:05:54 | https://stackoverflow.com/q/5546223 | https://stackoverflow.com/a/5547386 | <p>The first signal is SIGHUP; that gets sent to all processes in the process group when the terminal disconnects (hangs up - hence HUP).</p>
<p>The second signal is SIGCONT (thanks, SiegeX, for the numbers). This is slightly surprising; it suggests you had a job stopped in the background which had to be allowed to r... | <p>The first signal is SIGHUP; that gets sent to all processes in the process group when the terminal disconnects (hangs up - hence HUP).</p> <p>The second signal is SIGCONT (thanks, SiegeX, for the numbers). This is slightly surprising; it suggests you had a job stopped in the background which had to be allowed to r... | 387, 391, 2481 | bash, signals, terminal | <h1>Signals received by bash when terminal is closed</h1>
<p>Use trap to capture signals like this:</p>
<pre><code>i=-1;while((++i<33));
do
trap "echo $i >> log.txt" $i;
done
</code></pre>
<p>And close the terminal by force.</p>
<p>The content in log.txt is then (under redhat linux):</p>
<blockquote>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,622 | bash | # Signals received by bash when terminal is closed
Use trap to capture signals like this:
```
i=-1;while((++i<33));
do
trap "echo $i >> log.txt" $i;
done
```
And close the terminal by force.
The content in log.txt is then (under redhat linux):
> 1
>
> 18
>
> 1
>
> 17
>
> 0
Where these signals from? | The first signal is SIGHUP; that gets sent to all processes in the process group when the terminal disconnects (hangs up - hence HUP).
The second signal is SIGCONT (thanks, SiegeX, for the numbers). This is slightly surprising; it suggests you had a job stopped in the background which had to be allowed to run again.
... |
3086781 | Bash's equivalent of Tcsh's ESC-p to jump to command starting with what you typed so far | 14 | 2010-06-21 17:09:32 | <p>I recently made the insanely long overdue switch from tcsh to bash.
The only thing I miss is tcsh's <kbd>ESC</kbd>+<kbd>p</kbd> feature:
Start typing a command and then hit <kbd>ESC</kbd>+<kbd>p</kbd> (I actually found the equivalent ctrl-[p easier to type) and it jumps to the most recent command in your history tha... | 15,290 | 4,234 | 2017-08-11 09:20:11 | 3,086,977 | 14 | 2010-06-21 17:36:25 | 26,428 | 2011-10-28 11:13:31 | https://stackoverflow.com/q/3086781 | https://stackoverflow.com/a/3086977 | <p>Add this to your <code>~/.inputrc</code> file:</p>
<pre><code>"\e[5~": history-search-backward
"\e[6~": history-search-forward
</code></pre>
<p>This will make <kbd>PageUp</kbd> act like tcsh's <kbd>Esc</kbd>+<kbd>p</kbd> and <kbd>PageDown</kbd> will go forward through the list.</p>
<p>You can bind <code>\ep</code... | <p>Add this to your <code>~/.inputrc</code> file:</p> <pre><code>"\e[5~": history-search-backward "\e[6~": history-search-forward </code></pre> <p>This will make <kbd>PageUp</kbd> act like tcsh's <kbd>Esc</kbd>+<kbd>p</kbd> and <kbd>PageDown</kbd> will go forward through the list.</p> <p>You can bind <code>\ep</code... | 387, 390, 4198, 8599 | bash, keyboard-shortcuts, shell, tcsh | <h1>Bash's equivalent of Tcsh's ESC-p to jump to command starting with what you typed so far</h1>
<p>I recently made the insanely long overdue switch from tcsh to bash.
The only thing I miss is tcsh's <kbd>ESC</kbd>+<kbd>p</kbd> feature:
Start typing a command and then hit <kbd>ESC</kbd>+<kbd>p</kbd> (I actually found ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,623 | bash | # Bash's equivalent of Tcsh's ESC-p to jump to command starting with what you typed so far
I recently made the insanely long overdue switch from tcsh to bash.
The only thing I miss is tcsh's `ESC`+`p` feature:
Start typing a command and then hit `ESC`+`p` (I actually found the equivalent ctrl-[p easier to type) and it... | Add this to your `~/.inputrc` file:
```
"\e[5~": history-search-backward
"\e[6~": history-search-forward
```
This will make `PageUp` act like tcsh's `Esc`+`p` and `PageDown` will go forward through the list.
You can bind `\ep` instead. If you use `PageUp` / `PageDown`, you may need to see what character sequence you... |
2501056 | Can't get expand_aliases to take effect | 14 | 2010-03-23 15:17:28 | <p>I can't get expand_aliases to take effect in bash. I've tried a lot of different things, and nothing works.</p>
<p>Here's the simple test case:</p>
<pre><code>/bin/bash -c 'shopt -s expand_aliases; alias cdtmp="cd /tmp"; alias; cdtmp; pwd;'
</code></pre>
<p>And the output:</p>
<pre><code>$ /bin/bash -c 'shopt -... | 7,728 | 300,028 | 2020-12-23 08:58:51 | 2,502,451 | 14 | 2010-03-23 18:11:50 | 26,428 | 2015-09-23 20:02:23 | https://stackoverflow.com/q/2501056 | https://stackoverflow.com/a/2502451 | <p>Aliases aren't available on the same line or in the same function where they are defined.</p>
<p>From the Bash man page:</p>
<pre>
The rules concerning the definition and use of aliases are somewhat
confusing. Bash always reads at least one complete line of input
before executing an... | <p>Aliases aren't available on the same line or in the same function where they are defined.</p> <p>From the Bash man page:</p> <pre> The rules concerning the definition and use of aliases are somewhat confusing. Bash always reads at least one complete line of input before executing an... | 387, 1448, 135295 | alias, bash, shopt | <h1>Can't get expand_aliases to take effect</h1>
<p>I can't get expand_aliases to take effect in bash. I've tried a lot of different things, and nothing works.</p>
<p>Here's the simple test case:</p>
<pre><code>/bin/bash -c 'shopt -s expand_aliases; alias cdtmp="cd /tmp"; alias; cdtmp; pwd;'
</code></pre>
<p>And th... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,624 | bash | # Can't get expand_aliases to take effect
I can't get expand_aliases to take effect in bash. I've tried a lot of different things, and nothing works.
Here's the simple test case:
```
/bin/bash -c 'shopt -s expand_aliases; alias cdtmp="cd /tmp"; alias; cdtmp; pwd;'
```
And the output:
```
$ /bin/bash -c 'shopt -s e... | Aliases aren't available on the same line or in the same function where they are defined.
From the Bash man page:
```
The rules concerning the definition and use of aliases are somewhat
confusing. Bash always reads at least one complete line of input
before executing any of the comm... |
2278876 | Powershell scripting: recommended way to implement ShouldProcess when function calls are nested? | 14 | 2010-02-17 07:01:31 | <p>Test script:</p>
<pre><code>function outer
{
[cmdletbinding(supportsshouldprocess=$true)]
param($s)
process
{
$pscmdlet.shouldprocess("outer $s", "ShouldProcess") | out-null
"" | out-file "outer $s"
inner ImplicitPassthru
inner VerbosePassthru -Verbose:$Verb... | 8,568 | 74,439 | 2017-01-21 23:45:18 | 2,314,145 | 14 | 2010-02-22 21:00:15 | 153,982 | 2010-02-23 01:59:30 | https://stackoverflow.com/q/2278876 | https://stackoverflow.com/a/2314145 | <p>You can't really refer to $WhatIf or $Verbose since these are synthesized for you i.e. these variables don't exist in your function. If the user specifies them then you can get at them via $PSBoundParameters but if the user didn't specify then obviously they won't be in this hashtable. </p>
<p>When you pass a val... | <p>You can't really refer to $WhatIf or $Verbose since these are synthesized for you i.e. these variables don't exist in your function. If the user specifies them then you can get at them via $PSBoundParameters but if the user didn't specify then obviously they won't be in this hashtable. </p> <p>When you pass a val... | 379, 526, 2433, 153947 | design-patterns, error-handling, powershell, powershell-cmdlet | <h1>Powershell scripting: recommended way to implement ShouldProcess when function calls are nested?</h1>
<p>Test script:</p>
<pre><code>function outer
{
[cmdletbinding(supportsshouldprocess=$true)]
param($s)
process
{
$pscmdlet.shouldprocess("outer $s", "ShouldProcess") | out-null
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,625 | bash | # Powershell scripting: recommended way to implement ShouldProcess when function calls are nested?
Test script:
```
function outer
{
[cmdletbinding(supportsshouldprocess=$true)]
param($s)
process
{
$pscmdlet.shouldprocess("outer $s", "ShouldProcess") | out-null
"" | out-file "... | You can't really refer to $WhatIf or $Verbose since these are synthesized for you i.e. these variables don't exist in your function. If the user specifies them then you can get at them via $PSBoundParameters but if the user didn't specify then obviously they won't be in this hashtable.
When you pass a value to a switc... |
67275008 | In Git-Bash-Windows `openssl pkcs12` does not prompt for password | 13 | 2021-04-26 23:29:06 | <p>The SSL certificate authority sent me the signed certificate in <code>.pfx</code> format and it was password-protected; so I need to convert it to <code>.crt</code> file.</p>
<p>The first attempt was to call <code>openssl pkcs12 -in server.pfx -out server.crt -nokeys -clcerts</code>, simply in Git-Bash Windows; but ... | 22,917 | 7,903,749 | 2022-11-06 14:26:25 | 67,278,566 | 14 | 2021-04-27 07:19:42 | 6,309 | 2021-04-27 07:19:42 | https://stackoverflow.com/q/67275008 | https://stackoverflow.com/a/67278566 | <p>First, on Windows 10, you could switch to any Linus distro of your choice through WSL2.</p>
<p>Second, on Windows, I always had to include the password in the command line:</p>
<pre><code>openssl pkcs12 -password pass:aPassword -in server.keystore.pfx -nokeys -clcerts -out server.cert
# or
openssl pkcs12 -passin pas... | <p>First, on Windows 10, you could switch to any Linus distro of your choice through WSL2.</p> <p>Second, on Windows, I always had to include the password in the command line:</p> <pre><code>openssl pkcs12 -password pass:aPassword -in server.keystore.pfx -nokeys -clcerts -out server.cert # or openssl pkcs12 -passin pas... | 64, 1999, 24574, 61874 | git-bash, openssl, pkcs#12, windows | <h1>In Git-Bash-Windows `openssl pkcs12` does not prompt for password</h1>
<p>The SSL certificate authority sent me the signed certificate in <code>.pfx</code> format and it was password-protected; so I need to convert it to <code>.crt</code> file.</p>
<p>The first attempt was to call <code>openssl pkcs12 -in server.pf... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,626 | bash | # In Git-Bash-Windows `openssl pkcs12` does not prompt for password
The SSL certificate authority sent me the signed certificate in `.pfx` format and it was password-protected; so I need to convert it to `.crt` file.
The first attempt was to call `openssl pkcs12 -in server.pfx -out server.crt -nokeys -clcerts`, simpl... | First, on Windows 10, you could switch to any Linus distro of your choice through WSL2.
Second, on Windows, I always had to include the password in the command line:
```
openssl pkcs12 -password pass:aPassword -in server.keystore.pfx -nokeys -clcerts -out server.cert
# or
openssl pkcs12 -passin pass:aPassword -in ser... |
44982499 | Read from a 'named pipe' / fifo with Node.js | 13 | 2017-07-08 04:30:39 | <p>I have this:</p>
<pre><code> const p = path.resolve(projectRoot + '/NAMEDPIPEIN');
const fd = fs.openSync(p, 'r+');
fs.createReadStream(null, {fd}).on('data', function (d) {
if (String(d).trim() === '[stdin end]') {
return process.nextTick(cb);
}
process.argv.push(String(d).trim());
});
</... | 9,195 | 1,223,975 | 2025-01-26 09:23:38 | 52,622,889 | 14 | 2018-10-03 08:32:08 | 1,843,507 | 2019-12-23 19:09:18 | https://stackoverflow.com/q/44982499 | https://stackoverflow.com/a/52622889 | <p>The other solution, from <a href="https://stackoverflow.com/a/46965930/1843507">@richardpringle</a> should work, but is limited in functionality.</p>
<p>If you try to open multiple FIFOs that way (more than the number of threads in the thread-pool), the first ones you opened won't be streaming data anymore. This is... | <p>The other solution, from <a href="https://stackoverflow.com/a/46965930/1843507">@richardpringle</a> should work, but is limited in functionality.</p> <p>If you try to open multiple FIFOs that way (more than the number of threads in the thread-pool), the first ones you opened won't be streaming data anymore. This is... | 58, 369, 387, 11366, 46426 | bash, linux, macos, named-pipes, node.js | <h1>Read from a 'named pipe' / fifo with Node.js</h1>
<p>I have this:</p>
<pre><code> const p = path.resolve(projectRoot + '/NAMEDPIPEIN');
const fd = fs.openSync(p, 'r+');
fs.createReadStream(null, {fd}).on('data', function (d) {
if (String(d).trim() === '[stdin end]') {
return process.nextTick(cb);
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,627 | bash | # Read from a 'named pipe' / fifo with Node.js
I have this:
```
const p = path.resolve(projectRoot + '/NAMEDPIPEIN');
const fd = fs.openSync(p, 'r+');
fs.createReadStream(null, {fd}).on('data', function (d) {
if (String(d).trim() === '[stdin end]') {
return process.nextTick(cb);
}
process.arg... | The other solution, from [@richardpringle](https://stackoverflow.com/a/46965930/1843507) should work, but is limited in functionality.
If you try to open multiple FIFOs that way (more than the number of threads in the thread-pool), the first ones you opened won't be streaming data anymore. This is because the `fs` mod... |
46696156 | Git autocomplete for custom bash functions | 13 | 2017-10-11 19:33:45 | <p>In my <code>.bash_profile</code>, I have a lot of functional shortcuts for git. For example:</p>
<pre><code>function gitpull() {
branch="$1"
if [[ -z $branch ]]; then
current_branch=`git symbolic-ref -q --short HEAD`
git pull origin $current_branch;
elif [[ -n $branch && $branch... | 2,062 | 2,094,116 | 2021-01-17 03:47:34 | 46,696,505 | 14 | 2017-10-11 19:57:15 | 404,556 | 2017-10-12 14:00:41 | https://stackoverflow.com/q/46696156 | https://stackoverflow.com/a/46696505 | <p>Manually-crafted bash completion is as simple as this:</p>
<pre><code># our handler that returns choices by populating Bash array COMPREPLY
# (filtered by the currently entered word ($2) via compgen builtin)
_gitpull_complete() {
branches=$(git branch -l | cut -c3-)
COMPREPLY=($(compgen -W "$branches" -- "$... | <p>Manually-crafted bash completion is as simple as this:</p> <pre><code># our handler that returns choices by populating Bash array COMPREPLY # (filtered by the currently entered word ($2) via compgen builtin) _gitpull_complete() { branches=$(git branch -l | cut -c3-) COMPREPLY=($(compgen -W "$branches" -- "$... | 119, 387, 59778 | bash, bash-completion, git | <h1>Git autocomplete for custom bash functions</h1>
<p>In my <code>.bash_profile</code>, I have a lot of functional shortcuts for git. For example:</p>
<pre><code>function gitpull() {
branch="$1"
if [[ -z $branch ]]; then
current_branch=`git symbolic-ref -q --short HEAD`
git pull origin $curre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,628 | bash | # Git autocomplete for custom bash functions
In my `.bash_profile`, I have a lot of functional shortcuts for git. For example:
```
function gitpull() {
branch="$1"
if [[ -z $branch ]]; then
current_branch=`git symbolic-ref -q --short HEAD`
git pull origin $current_branch;
elif [[ -n $bran... | Manually-crafted bash completion is as simple as this:
```
# our handler that returns choices by populating Bash array COMPREPLY
# (filtered by the currently entered word ($2) via compgen builtin)
_gitpull_complete() {
branches=$(git branch -l | cut -c3-)
COMPREPLY=($(compgen -W "$branches" -- "$2"))
}
# we n... |
40458246 | How do I run an extensionless (maybe ELF) file on Ubuntu? | 13 | 2016-11-07 05:14:25 | <p>I was given a "binary" file on linux and a seperate file for windows for a particular task. The programs is an exe on windows. A linux version of the file has the same function on linux as it had windows, too.</p>
<p>However, I've failed to be able to execute this. I tried (on the terminal) to execute it by just th... | 98,132 | 4,640,489 | 2022-12-12 01:25:58 | 40,458,487 | 14 | 2016-11-07 05:39:16 | 229,602 | 2016-11-07 05:39:16 | https://stackoverflow.com/q/40458246 | https://stackoverflow.com/a/40458487 | <p>My guess is that this is 32 bit compile on a 64 bit system. I cross compiled a small c file into a binary using the <code>-m32</code> option on gcc. This also needed a few extra packages. The resulting <code>a.out</code> looks like this.</p>
<pre><code>% file a.out
a.out: ELF 32-bit LSB executable, Intel 80386, ver... | <p>My guess is that this is 32 bit compile on a 64 bit system. I cross compiled a small c file into a binary using the <code>-m32</code> option on gcc. This also needed a few extra packages. The resulting <code>a.out</code> looks like this.</p> <pre><code>% file a.out a.out: ELF 32-bit LSB executable, Intel 80386, ver... | 58, 387, 390 | bash, linux, shell | <h1>How do I run an extensionless (maybe ELF) file on Ubuntu?</h1>
<p>I was given a "binary" file on linux and a seperate file for windows for a particular task. The programs is an exe on windows. A linux version of the file has the same function on linux as it had windows, too.</p>
<p>However, I've failed to be able ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,629 | bash | # How do I run an extensionless (maybe ELF) file on Ubuntu?
I was given a "binary" file on linux and a seperate file for windows for a particular task. The programs is an exe on windows. A linux version of the file has the same function on linux as it had windows, too.
However, I've failed to be able to execute this.... | My guess is that this is 32 bit compile on a 64 bit system. I cross compiled a small c file into a binary using the `-m32` option on gcc. This also needed a few extra packages. The resulting `a.out` looks like this.
```
% file a.out
a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, i... |
38996051 | Reading python variables during a running job | 13 | 2016-08-17 12:00:26 | <p>I have launched a python script that takes a long time to finish, and silly me I forgot to print out the values of important variables every now and then in my script, to for example estimate the progress of the computation I'm doing.
So now, I was wondering if there's a way to access the current values of certain ... | 5,544 | null | 2016-08-17 13:33:30 | 38,996,231 | 14 | 2016-08-17 12:08:14 | 1,702,990 | 2016-08-17 13:33:30 | https://stackoverflow.com/q/38996051 | https://stackoverflow.com/a/38996231 | <p>Without editing your program, you're going to have a bad time. What you are looking for is some form of remote debugger, but anything that gives you python specific things will probably have to be at least somehow given a hook into your program. That being said, if you feel like fiddling around in a stack, you can a... | <p>Without editing your program, you're going to have a bad time. What you are looking for is some form of remote debugger, but anything that gives you python specific things will probably have to be at least somehow given a hook into your program. That being said, if you feel like fiddling around in a stack, you can a... | 16, 390 | python, shell | <h1>Reading python variables during a running job</h1>
<p>I have launched a python script that takes a long time to finish, and silly me I forgot to print out the values of important variables every now and then in my script, to for example estimate the progress of the computation I'm doing.
So now, I was wondering if... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,630 | bash | # Reading python variables during a running job
I have launched a python script that takes a long time to finish, and silly me I forgot to print out the values of important variables every now and then in my script, to for example estimate the progress of the computation I'm doing.
So now, I was wondering if there's a... | Without editing your program, you're going to have a bad time. What you are looking for is some form of remote debugger, but anything that gives you python specific things will probably have to be at least somehow given a hook into your program. That being said, if you feel like fiddling around in a stack, you can atta... |
37356444 | Sed error "command a expects \ followed by text" | 13 | 2016-05-20 21:56:35 | <p>Here is my script:</p>
<pre><code>openscad $1 -D generate=1 -o $1.csg 2>&1 >/dev/null |
sed 's/ECHO: \"\[LC\] //' |
sed 's/"$//' |
sed '$a;' >./2d_$1
</code></pre>
<p>That output:</p>
<pre><code>sed: 1: "$a;": command a expects \ followed by text
</code></pre>
| 15,547 | null | 2023-05-23 08:56:06 | 37,356,878 | 14 | 2016-05-20 22:41:41 | 15,168 | 2016-05-20 22:41:41 | https://stackoverflow.com/q/37356444 | https://stackoverflow.com/a/37356878 | <p>Your version of <code>sed</code> is not GNU <code>sed</code> which allows what you use. You need to write:</p>
<pre><code>openscad $1 -D generate=1 -o $1.csg 2>&1 >/dev/null |
sed 's/ECHO: \"\[LC\] //' |
sed 's/"$//' |
sed '$a\
;' >./2d_$1
</code></pre>
<p>Also, three copies of <code>sed</code> is a ... | <p>Your version of <code>sed</code> is not GNU <code>sed</code> which allows what you use. You need to write:</p> <pre><code>openscad $1 -D generate=1 -o $1.csg 2>&1 >/dev/null | sed 's/ECHO: \"\[LC\] //' | sed 's/"$//' | sed '$a\ ;' >./2d_$1 </code></pre> <p>Also, three copies of <code>sed</code> is a ... | 387, 5282, 93134 | bash, openscad, sed | <h1>Sed error "command a expects \ followed by text"</h1>
<p>Here is my script:</p>
<pre><code>openscad $1 -D generate=1 -o $1.csg 2>&1 >/dev/null |
sed 's/ECHO: \"\[LC\] //' |
sed 's/"$//' |
sed '$a;' >./2d_$1
</code></pre>
<p>That output:</p>
<pre><code>sed: 1: "$a;": command a expects \ followed by t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,631 | bash | # Sed error "command a expects \ followed by text"
Here is my script:
```
openscad $1 -D generate=1 -o $1.csg 2>&1 >/dev/null |
sed 's/ECHO: \"\[LC\] //' |
sed 's/"$//' |
sed '$a;' >./2d_$1
```
That output:
```
sed: 1: "$a;": command a expects \ followed by text
``` | Your version of `sed` is not GNU `sed` which allows what you use. You need to write:
```
openscad $1 -D generate=1 -o $1.csg 2>&1 >/dev/null |
sed 's/ECHO: \"\[LC\] //' |
sed 's/"$//' |
sed '$a\
;' >./2d_$1
```
Also, three copies of `sed` is a little excessive (to be polite); one suffices:
```
openscad $1 -D generat... |
37275033 | Running 'export' command with Pythons 'subprocess' does not work | 13 | 2016-05-17 11:37:41 | <pre><code>subprocess.run('export FOO=BAR', shell=True)
</code></pre>
<p>This simply doesn't work, and I have no idea why.</p>
<p>All I am trying to do I set an environment variable from my python (3.5.1) script, and when I run the above line, nothing happens. No errors are raised, and when I check the environment va... | 6,984 | 6,018,304 | 2016-05-17 12:17:30 | 37,275,214 | 14 | 2016-05-17 11:45:53 | 1,126,841 | 2016-05-17 12:17:30 | https://stackoverflow.com/q/37275033 | https://stackoverflow.com/a/37275214 | <p>It works fine; however, the variable setting only exists in the subprocess. You cannot affect the environment of the local process from a child.</p>
<p><code>os.environ</code> is the correct solution, as it changes the environment of the local process, and those changes will be inherited by any process started with... | <p>It works fine; however, the variable setting only exists in the subprocess. You cannot affect the environment of the local process from a child.</p> <p><code>os.environ</code> is the correct solution, as it changes the environment of the local process, and those changes will be inherited by any process started with... | 16, 387, 390, 1796, 2348 | bash, command, python, shell, subprocess | <h1>Running 'export' command with Pythons 'subprocess' does not work</h1>
<pre><code>subprocess.run('export FOO=BAR', shell=True)
</code></pre>
<p>This simply doesn't work, and I have no idea why.</p>
<p>All I am trying to do I set an environment variable from my python (3.5.1) script, and when I run the above line, ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,632 | bash | # Running 'export' command with Pythons 'subprocess' does not work
```
subprocess.run('export FOO=BAR', shell=True)
```
This simply doesn't work, and I have no idea why.
All I am trying to do I set an environment variable from my python (3.5.1) script, and when I run the above line, nothing happens. No errors are ra... | It works fine; however, the variable setting only exists in the subprocess. You cannot affect the environment of the local process from a child.
`os.environ` is the correct solution, as it changes the environment of the local process, and those changes will be inherited by any process started with `subprocess.run`.
Y... |
32007152 | Insert multiple lines of text before specific line using Bash | 13 | 2015-08-14 09:48:32 | <p>I am trying to insert a few lines of text before a specific line, but keep getting sed errors when I try to add a new line character. My command looks like:</p>
<pre><code>sed -r -i '/Line to insert after/ i Line one to insert \\
second new line to insert \\
third new line to insert' /etc/directory/somefil... | 25,913 | 575,596 | 2019-05-28 23:05:26 | 32,007,388 | 14 | 2015-08-14 10:00:24 | 548,225 | 2015-08-14 10:00:24 | https://stackoverflow.com/q/32007152 | https://stackoverflow.com/a/32007388 | <p>This should work:</p>
<pre><code>sed -i '/Line to insert after/ i Line one to insert \
second new line to insert \
third new line to insert' file
</code></pre>
| <p>This should work:</p> <pre><code>sed -i '/Line to insert after/ i Line one to insert \ second new line to insert \ third new line to insert' file </code></pre> | 34, 387, 5282, 30640 | bash, sed, text-manipulation, unix | <h1>Insert multiple lines of text before specific line using Bash</h1>
<p>I am trying to insert a few lines of text before a specific line, but keep getting sed errors when I try to add a new line character. My command looks like:</p>
<pre><code>sed -r -i '/Line to insert after/ i Line one to insert \\
second new... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,633 | bash | # Insert multiple lines of text before specific line using Bash
I am trying to insert a few lines of text before a specific line, but keep getting sed errors when I try to add a new line character. My command looks like:
```
sed -r -i '/Line to insert after/ i Line one to insert \\
second new line to insert \\
... | This should work:
```
sed -i '/Line to insert after/ i Line one to insert \
second new line to insert \
third new line to insert' file
``` |
27652458 | What's the best way to embed a Unicode character in a POSIX shell script? | 13 | 2014-12-26 03:08:06 | <p>There's several shell-specific ways to include a ‘unicode literal’ in a string. For instance, in Bash, the quoted string-expanding mechanism, <code>$''</code>, allows us to directly embed an invisible character: <code>$'\u2620'</code>.</p>
<p>However, if you're trying to write universally cross-platform shell-scrip... | 6,522 | 31,897 | 2016-11-27 22:20:28 | 27,658,989 | 14 | 2014-12-26 15:37:41 | 1,566,221 | 2015-06-26 17:47:44 | https://stackoverflow.com/q/27652458 | https://stackoverflow.com/a/27658989 | <p>If you have Gnu <code>printf</code> installed (it's in debian package <code>coreutils</code>, for example), then you can use it independent of which shell you are using by avoiding the shell's builtin:</p>
<pre><code>env printf '\u2388\n'
</code></pre>
<p>Here I am using the Posix-standard <code>env</code> command... | <p>If you have Gnu <code>printf</code> installed (it's in debian package <code>coreutils</code>, for example), then you can use it independent of which shell you are using by avoiding the shell's builtin:</p> <pre><code>env printf '\u2388\n' </code></pre> <p>Here I am using the Posix-standard <code>env</code> command... | 279, 387, 390, 1993, 137448 | bash, dash-shell, posix, shell, unicode | <h1>What's the best way to embed a Unicode character in a POSIX shell script?</h1>
<p>There's several shell-specific ways to include a ‘unicode literal’ in a string. For instance, in Bash, the quoted string-expanding mechanism, <code>$''</code>, allows us to directly embed an invisible character: <code>$'\u2620'</code>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,634 | bash | # What's the best way to embed a Unicode character in a POSIX shell script?
There's several shell-specific ways to include a ‘unicode literal’ in a string. For instance, in Bash, the quoted string-expanding mechanism, `$''`, allows us to directly embed an invisible character: `$'\u2620'`.
However, if you're trying to... | If you have Gnu `printf` installed (it's in debian package `coreutils`, for example), then you can use it independent of which shell you are using by avoiding the shell's builtin:
```
env printf '\u2388\n'
```
Here I am using the Posix-standard `env` command to avoid the use of the `printf` builtin, but if you happen... |
24701227 | coloring in heredocs, bash | 13 | 2014-07-11 15:23:38 | <p>If I have previously defined color variable like this:</p>
<pre><code>txtred='\e[1;31m'
</code></pre>
<p>How would I use it in <strong>heredoc</strong>:</p>
<pre><code> cat << EOM
[colorcode here] USAGE:
EOM
</code></pre>
<p>I mean what should I write in place of <code>[colorcode here]</code> to r... | 5,222 | 2,434,479 | 2025-12-15 07:00:02 | 24,701,349 | 14 | 2014-07-11 15:29:20 | 258,523 | 2018-03-03 03:15:55 | https://stackoverflow.com/q/24701227 | https://stackoverflow.com/a/24701349 | <p>You need something to interpret the escape sequence which <code>cat</code> won't do. This is why you need <code>echo -e</code> instead of just <code>echo</code> to make it work normally.</p>
<pre><code>cat << EOM
$(echo -e "${txtred} USAGE:")
EOM
</code></pre>
<p>works</p>
<p>but you could also not use esca... | <p>You need something to interpret the escape sequence which <code>cat</code> won't do. This is why you need <code>echo -e</code> instead of just <code>echo</code> to make it work normally.</p> <pre><code>cat << EOM $(echo -e "${txtred} USAGE:") EOM </code></pre> <p>works</p> <p>but you could also not use esca... | 387, 6439, 7449 | bash, colors, heredoc | <h1>coloring in heredocs, bash</h1>
<p>If I have previously defined color variable like this:</p>
<pre><code>txtred='\e[1;31m'
</code></pre>
<p>How would I use it in <strong>heredoc</strong>:</p>
<pre><code> cat << EOM
[colorcode here] USAGE:
EOM
</code></pre>
<p>I mean what should I write in place o... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,635 | bash | # coloring in heredocs, bash
If I have previously defined color variable like this:
```
txtred='\e[1;31m'
```
How would I use it in **heredoc**:
```
cat << EOM
[colorcode here] USAGE:
EOM
```
I mean what should I write in place of `[colorcode here]` to render that USAGE
text red? `${txtred}` won't work, ... | You need something to interpret the escape sequence which `cat` won't do. This is why you need `echo -e` instead of just `echo` to make it work normally.
```
cat << EOM
$(echo -e "${txtred} USAGE:")
EOM
```
works
but you could also not use escape sequences by using `textred=$(tput setaf 1)` and then just use the var... |
24525791 | PowerShell Write-Output inside "if" does not output anything | 13 | 2014-07-02 07:55:57 | <p>I am learning PowerShell recently, and found a behavior that I cannot understand. Let me explain in code below:</p>
<pre><code>function func1()
{
Write-Output "output from func1()"
func2
return $true
}
function func2()
{
Write-Output "output from func2()"
func3
}
function func3()
{
Write-O... | 9,301 | 3,104,257 | 2024-02-27 10:26:08 | 24,526,547 | 14 | 2014-07-02 08:38:00 | 3,796,417 | 2019-04-04 09:22:56 | https://stackoverflow.com/q/24525791 | https://stackoverflow.com/a/24526547 | <p>PowerShell functions are not like their traditional language counterparts: they can output multiple things. When you're using <code>Write-Output</code>, you are sending things down the pipeline, so <code>func1()</code> will return both a String and a Boolean. If you try this:</p>
<pre><code>$return_values = func1;
... | <p>PowerShell functions are not like their traditional language counterparts: they can output multiple things. When you're using <code>Write-Output</code>, you are sending things down the pipeline, so <code>func1()</code> will return both a String and a Boolean. If you try this:</p> <pre><code>$return_values = func1; ... | 526 | powershell | <h1>PowerShell Write-Output inside "if" does not output anything</h1>
<p>I am learning PowerShell recently, and found a behavior that I cannot understand. Let me explain in code below:</p>
<pre><code>function func1()
{
Write-Output "output from func1()"
func2
return $true
}
function func2()
{
Write-Ou... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,636 | bash | # PowerShell Write-Output inside "if" does not output anything
I am learning PowerShell recently, and found a behavior that I cannot understand. Let me explain in code below:
```
function func1()
{
Write-Output "output from func1()"
func2
return $true
}
function func2()
{
Write-Output "output from fu... | PowerShell functions are not like their traditional language counterparts: they can output multiple things. When you're using `Write-Output`, you are sending things down the pipeline, so `func1()` will return both a String and a Boolean. If you try this:
```
$return_values = func1;
$return_values | Get-Member
```
You... |
24004302 | Using PowerShell to import data properly into an array | 13 | 2014-06-02 22:28:32 | <p>I am trying to put together a PowerShell script that will read data from a CSV (it is actually tab separated and not CSV but for SO, we'll use commas) and import that data into a PowerShell multidimensional array. My CSV has the following data:</p>
<pre><code>EmpID,Name,Dept
12345,John,Service
56789,Sarah,Sales
98... | 151,933 | 2,846,397 | 2016-03-16 23:00:30 | 24,004,453 | 14 | 2014-06-02 22:42:24 | 3,661,652 | 2014-06-02 22:42:24 | https://stackoverflow.com/q/24004302 | https://stackoverflow.com/a/24004453 | <p>You're working too hard. Import-CSV will work with comma separation by default, and you could handle tab delimited using -Delimiter. From there you can reference the columns by name.</p>
<pre><code>Import-CSV "temp.csv" | Write-Host "EmpID=" + $_.EmpID
</code></pre>
| <p>You're working too hard. Import-CSV will work with comma separation by default, and you could handle tab delimited using -Delimiter. From there you can reference the columns by name.</p> <pre><code>Import-CSV "temp.csv" | Write-Host "EmpID=" + $_.EmpID </code></pre> | 526 | powershell | <h1>Using PowerShell to import data properly into an array</h1>
<p>I am trying to put together a PowerShell script that will read data from a CSV (it is actually tab separated and not CSV but for SO, we'll use commas) and import that data into a PowerShell multidimensional array. My CSV has the following data:</p>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,637 | bash | # Using PowerShell to import data properly into an array
I am trying to put together a PowerShell script that will read data from a CSV (it is actually tab separated and not CSV but for SO, we'll use commas) and import that data into a PowerShell multidimensional array. My CSV has the following data:
```
EmpID,Name,D... | You're working too hard. Import-CSV will work with comma separation by default, and you could handle tab delimited using -Delimiter. From there you can reference the columns by name.
```
Import-CSV "temp.csv" | Write-Host "EmpID=" + $_.EmpID
``` |
21944643 | powershell select-string not working correctly | 13 | 2014-02-21 20:35:49 | <p>I'm a beginner to powershell and having I suspect what will be a simple problem. I'm trying to do the following command, but it returns nothing as a result and I don't understand why.</p>
<p>I'm trying to get the description of the current section of bcdedit. If I do:</p>
<pre class="lang-powershell prettyprint-ov... | 16,221 | 2,443,973 | 2017-06-08 08:39:21 | 21,945,017 | 14 | 2014-02-21 20:57:24 | 1,630,171 | 2017-06-08 08:39:21 | https://stackoverflow.com/q/21944643 | https://stackoverflow.com/a/21945017 | <p>You don't get the result you expect, because <code>Select-String</code> doesn't output strings, but <a href="http://msdn.microsoft.com/en-us/library/microsoft.powershell.commands.matchinfo_members%28v=vs.85%29.aspx" rel="noreferrer"><code>MatchInfo</code></a> objects. If you pipe the output of your first <code>Selec... | <p>You don't get the result you expect, because <code>Select-String</code> doesn't output strings, but <a href="http://msdn.microsoft.com/en-us/library/microsoft.powershell.commands.matchinfo_members%28v=vs.85%29.aspx" rel="noreferrer"><code>MatchInfo</code></a> objects. If you pipe the output of your first <code>Selec... | 526, 92879 | powershell, select-string | <h1>powershell select-string not working correctly</h1>
<p>I'm a beginner to powershell and having I suspect what will be a simple problem. I'm trying to do the following command, but it returns nothing as a result and I don't understand why.</p>
<p>I'm trying to get the description of the current section of bcdedit. ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,638 | bash | # powershell select-string not working correctly
I'm a beginner to powershell and having I suspect what will be a simple problem. I'm trying to do the following command, but it returns nothing as a result and I don't understand why.
I'm trying to get the description of the current section of bcdedit. If I do:
```
bc... | You don't get the result you expect, because `Select-String` doesn't output strings, but [`MatchInfo`](http://msdn.microsoft.com/en-us/library/microsoft.powershell.commands.matchinfo_members%28v=vs.85%29.aspx) objects. If you pipe the output of your first `Select-String` into the `Get-Member` or `Format-List` cmdlet, y... |
16673570 | Bash case statement | 13 | 2013-05-21 15:18:43 | <p>I'm trying to learn case as I was to write a fully functional script.</p>
<p>I'm starting off with the below</p>
<pre><code>#!/bin/sh
case $@ in
-h|--help)
echo "You have selected Help"
;;
-B|-b)
echo "You have selected B"
;;
-C|-c)
echo "You... | 29,739 | 1,978,420 | 2016-06-23 17:54:52 | 16,682,308 | 14 | 2013-05-22 01:59:59 | 2,378,898 | 2013-05-22 01:59:59 | https://stackoverflow.com/q/16673570 | https://stackoverflow.com/a/16682308 | <p>Try this</p>
<pre><code>#!/bin/sh
usage() {
echo `basename $0`: ERROR: $* 1>&2
echo usage: `basename $0` '[-a] [-b] [-c]
[file ...]' 1>&2
exit 1
}
while :
do
case "$1" in
-a|-A) echo you picked A;;
-b|-B) echo you picked B;;
-c|-C) echo you picked C;;
-*) us... | <p>Try this</p> <pre><code>#!/bin/sh usage() { echo `basename $0`: ERROR: $* 1>&2 echo usage: `basename $0` '[-a] [-b] [-c] [file ...]' 1>&2 exit 1 } while : do case "$1" in -a|-A) echo you picked A;; -b|-B) echo you picked B;; -c|-C) echo you picked C;; -*) us... | 387, 390, 6107 | bash, case, shell | <h1>Bash case statement</h1>
<p>I'm trying to learn case as I was to write a fully functional script.</p>
<p>I'm starting off with the below</p>
<pre><code>#!/bin/sh
case $@ in
-h|--help)
echo "You have selected Help"
;;
-B|-b)
echo "You have selected B"
;;
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,639 | bash | # Bash case statement
I'm trying to learn case as I was to write a fully functional script.
I'm starting off with the below
```
#!/bin/sh
case $@ in
-h|--help)
echo "You have selected Help"
;;
-B|-b)
echo "You have selected B"
;;
-C|-c)
echo "Y... | Try this
```
#!/bin/sh
usage() {
echo `basename $0`: ERROR: $* 1>&2
echo usage: `basename $0` '[-a] [-b] [-c]
[file ...]' 1>&2
exit 1
}
while :
do
case "$1" in
-a|-A) echo you picked A;;
-b|-B) echo you picked B;;
-c|-C) echo you picked C;;
-*) usage "bad argument $1";;
... |
16654866 | Invoke-Sqlcmd, InputFile, and Variable | 13 | 2013-05-20 17:25:34 | <p>I need to exec a powershell script that exec a SQL script to create a database.
Based on my knowledge I exec the powershell command in this way:</p>
<p><strong>Init.ps1</strong></p>
<pre><code>$DATABASEFILENAME = "C:\Program Files\Microsoft SQL Server\MSSQL10_50.SQL2008INSTANCE\MSSQL\DATA\myDB.mdf"
$DATABASELOGNAM... | 19,287 | 250,003 | 2022-08-23 15:19:41 | 16,656,788 | 14 | 2013-05-20 19:21:03 | 135,965 | 2017-02-08 15:27:13 | https://stackoverflow.com/q/16654866 | https://stackoverflow.com/a/16656788 | <p>The <code>Variable</code> parameter for the <code>Invoke-Sqlcmd</code> cmdlet is picky. Do not include spaces before or after the variable assignment.</p>
<pre><code>$sqlVariable = "DATABASEFILENAME='$DATABASEFILENAME'", "DATABASELOGNAME='$DATABASELOGNAME'", "DBUSEROWNER='$DBUSEROWNER'"
</code></pre>
<p>Also you n... | <p>The <code>Variable</code> parameter for the <code>Invoke-Sqlcmd</code> cmdlet is picky. Do not include spaces before or after the variable assignment.</p> <pre><code>$sqlVariable = "DATABASEFILENAME='$DATABASEFILENAME'", "DATABASELOGNAME='$DATABASELOGNAME'", "DBUSEROWNER='$DBUSEROWNER'" </code></pre> <p>Also you n... | 72, 526 | powershell, sql-server | <h1>Invoke-Sqlcmd, InputFile, and Variable</h1>
<p>I need to exec a powershell script that exec a SQL script to create a database.
Based on my knowledge I exec the powershell command in this way:</p>
<p><strong>Init.ps1</strong></p>
<pre><code>$DATABASEFILENAME = "C:\Program Files\Microsoft SQL Server\MSSQL10_50.SQL2... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,640 | bash | # Invoke-Sqlcmd, InputFile, and Variable
I need to exec a powershell script that exec a SQL script to create a database.
Based on my knowledge I exec the powershell command in this way:
**Init.ps1**
```
$DATABASEFILENAME = "C:\Program Files\Microsoft SQL Server\MSSQL10_50.SQL2008INSTANCE\MSSQL\DATA\myDB.mdf"
$DATABA... | The `Variable` parameter for the `Invoke-Sqlcmd` cmdlet is picky. Do not include spaces before or after the variable assignment.
```
$sqlVariable = "DATABASEFILENAME='$DATABASEFILENAME'", "DATABASELOGNAME='$DATABASELOGNAME'", "DBUSEROWNER='$DBUSEROWNER'"
```
Also you need remove single quotes from variables:
```
$sq... |
16019389 | Passing An Array From One Bash Script to Another | 13 | 2013-04-15 15:45:45 | <p>I am new to writing Shell Scripts and am having some difficulties.</p>
<p><strong>What I Want To Achieve</strong></p>
<p>I have an array of strings in <code>scriptOne.sh</code> that I want to pass to <code>scriptTwo.sh</code></p>
<p><strong>What I Have Done So Far</strong></p>
<p>I can execute the second script ... | 8,522 | 507,313 | 2024-02-02 11:39:38 | 16,019,520 | 14 | 2013-04-15 15:51:51 | 1,030,675 | 2013-04-15 15:51:51 | https://stackoverflow.com/q/16019389 | https://stackoverflow.com/a/16019520 | <p>Your way of passing the array is correct</p>
<pre><code>./scriptTwo.sh "${array[@]}"
</code></pre>
<p>The problem is probably in the way how you receive it. In <code>scriptTwo.sh</code>, use</p>
<pre><code>array=("$@")
</code></pre>
| <p>Your way of passing the array is correct</p> <pre><code>./scriptTwo.sh "${array[@]}" </code></pre> <p>The problem is probably in the way how you receive it. In <code>scriptTwo.sh</code>, use</p> <pre><code>array=("$@") </code></pre> | 114, 387, 390, 10355 | arrays, bash, parameter-passing, shell | <h1>Passing An Array From One Bash Script to Another</h1>
<p>I am new to writing Shell Scripts and am having some difficulties.</p>
<p><strong>What I Want To Achieve</strong></p>
<p>I have an array of strings in <code>scriptOne.sh</code> that I want to pass to <code>scriptTwo.sh</code></p>
<p><strong>What I Have Don... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,641 | bash | # Passing An Array From One Bash Script to Another
I am new to writing Shell Scripts and am having some difficulties.
**What I Want To Achieve**
I have an array of strings in `scriptOne.sh` that I want to pass to `scriptTwo.sh`
**What I Have Done So Far**
I can execute the second script from inside the first using... | Your way of passing the array is correct
```
./scriptTwo.sh "${array[@]}"
```
The problem is probably in the way how you receive it. In `scriptTwo.sh`, use
```
array=("$@")
``` |
13971808 | Execute command multiple times with curly brackets arguments list | 13 | 2012-12-20 12:03:12 | <p>When I needed to run a command multiple times with a different argument I used this approach (without understanding it fully):</p>
<pre><code>touch {a,b,c}
</code></pre>
<p>Which is equivalent of:</p>
<pre><code>touch a
touch b
touch c
</code></pre>
<p>I think the same could be accomplished with the following lo... | 8,498 | 679,227 | 2015-03-06 18:22:35 | 13,972,093 | 14 | 2012-12-20 12:19:28 | 115,845 | 2012-12-20 12:19:28 | https://stackoverflow.com/q/13971808 | https://stackoverflow.com/a/13972093 | <p>That's called <a href="http://wiki.bash-hackers.org/syntax/expansion/brace">Brace Expansion</a>, which expands to a space-separated list of the given strings. </p>
<p>So <code>touch {a,b,c}</code> would be equivalent to</p>
<pre><code>touch a b c
</code></pre>
<p>While <code>touch {a,b,c}x</code> would be equival... | <p>That's called <a href="http://wiki.bash-hackers.org/syntax/expansion/brace">Brace Expansion</a>, which expands to a space-separated list of the given strings. </p> <p>So <code>touch {a,b,c}</code> would be equivalent to</p> <pre><code>touch a b c </code></pre> <p>While <code>touch {a,b,c}x</code> would be equival... | 387, 390, 1231, 31134, 41340 | bash, brace-expansion, command-line, command-line-arguments, shell | <h1>Execute command multiple times with curly brackets arguments list</h1>
<p>When I needed to run a command multiple times with a different argument I used this approach (without understanding it fully):</p>
<pre><code>touch {a,b,c}
</code></pre>
<p>Which is equivalent of:</p>
<pre><code>touch a
touch b
touch c
</c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,642 | bash | # Execute command multiple times with curly brackets arguments list
When I needed to run a command multiple times with a different argument I used this approach (without understanding it fully):
```
touch {a,b,c}
```
Which is equivalent of:
```
touch a
touch b
touch c
```
I think the same could be accomplished wit... | That's called [Brace Expansion](http://wiki.bash-hackers.org/syntax/expansion/brace), which expands to a space-separated list of the given strings.
So `touch {a,b,c}` would be equivalent to
```
touch a b c
```
While `touch {a,b,c}x` would be equivalent to:
```
touch ax bx cx
```
You `pear` command would essentiall... |
9268836 | zsh change prompt input color | 13 | 2012-02-13 22:12:58 | <p>I want to change the color of the input text in zsh (the text that I type for each command). Example: in <code>user@host> ls ~/</code> I would want <code>ls ~/</code> <strong>to be yellow to stand out from standard output.</strong> </p>
<p>I know I can accomplish this in <strong>bash</strong> using </p>
<pre><c... | 12,105 | 1,164,573 | 2012-11-30 17:10:41 | 13,635,653 | 14 | 2012-11-29 22:08:22 | 719,547 | 2012-11-30 17:10:41 | https://stackoverflow.com/q/9268836 | https://stackoverflow.com/a/13635653 | <p>Try this:</p>
<pre><code>PROMPT="%F{green}%n@%m %# %F{yellow}"
preexec () { echo -ne "\e[0m" }
</code></pre>
<p>I tried using <code>trap</code>, but it looks like <code>DEBUG</code> doesn't happen until after the command runs/before the next prompt, so the command ends up executing in yellow. The <code>preexec()<... | <p>Try this:</p> <pre><code>PROMPT="%F{green}%n@%m %# %F{yellow}" preexec () { echo -ne "\e[0m" } </code></pre> <p>I tried using <code>trap</code>, but it looks like <code>DEBUG</code> doesn't happen until after the command runs/before the next prompt, so the command ends up executing in yellow. The <code>preexec()<... | 387, 391, 3791, 28566 | bash, terminal, zsh, zshrc | <h1>zsh change prompt input color</h1>
<p>I want to change the color of the input text in zsh (the text that I type for each command). Example: in <code>user@host> ls ~/</code> I would want <code>ls ~/</code> <strong>to be yellow to stand out from standard output.</strong> </p>
<p>I know I can accomplish this in <s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,643 | bash | # zsh change prompt input color
I want to change the color of the input text in zsh (the text that I type for each command). Example: in `user@host> ls ~/` I would want `ls ~/` **to be yellow to stand out from standard output.**
I know I can accomplish this in **bash** using
```
export PS1=" $BIGreen \u@\h \w \$ $IY... | Try this:
```
PROMPT="%F{green}%n@%m %# %F{yellow}"
preexec () { echo -ne "\e[0m" }
```
I tried using `trap`, but it looks like `DEBUG` doesn't happen until after the command runs/before the next prompt, so the command ends up executing in yellow. The `preexec()` function gets called before the command executes, so y... |
13609701 | How to ignore return value different then 0 when I have set -e? | 13 | 2012-11-28 16:24:05 | <p>I often add <code>set -e</code> in my bash scripts. However this time I have to call a command that returns some meaningless number instead of 0 on success. How can I tell bash to ignore the return value of this command only.</p>
<p>Changing the command, or changing it's code to conform to the standard is not an op... | 1,442 | 1,047,870 | 2018-11-21 02:28:22 | 13,609,745 | 14 | 2012-11-28 16:26:12 | 462,117 | 2012-11-28 16:26:12 | https://stackoverflow.com/q/13609701 | https://stackoverflow.com/a/13609745 | <p><code>true</code> always returns a zero exit code. So you can do</p>
<pre><code>command-with-meaningless-return-value || true
</code></pre>
| <p><code>true</code> always returns a zero exit code. So you can do</p> <pre><code>command-with-meaningless-return-value || true </code></pre> | 387 | bash | <h1>How to ignore return value different then 0 when I have set -e?</h1>
<p>I often add <code>set -e</code> in my bash scripts. However this time I have to call a command that returns some meaningless number instead of 0 on success. How can I tell bash to ignore the return value of this command only.</p>
<p>Changing t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,644 | bash | # How to ignore return value different then 0 when I have set -e?
I often add `set -e` in my bash scripts. However this time I have to call a command that returns some meaningless number instead of 0 on success. How can I tell bash to ignore the return value of this command only.
Changing the command, or changing it'... | `true` always returns a zero exit code. So you can do
```
command-with-meaningless-return-value || true
``` |
13258123 | Shell Scripting unwanted '?' character at the end of file name | 13 | 2012-11-06 19:37:35 | <p>I get an unwanted '?' at the end of my file name while doing this: </p>
<pre><code>emplid=$(grep -a "Student ID" "$i".txt | sed 's/(Student ID: //g' | sed 's/)Tj//g' )
#gets emplid by doing a grep from some text file
echo "$emplid" #prints employee id correctly
cp "$i" "$emplid".pdf #getting an extra '?' ch... | 16,022 | 1,380,255 | 2014-01-30 21:31:12 | 13,258,251 | 14 | 2012-11-06 19:45:41 | 89,817 | 2012-11-07 01:47:51 | https://stackoverflow.com/q/13258123 | https://stackoverflow.com/a/13258251 | <p>It sounds like your script file has DOS-style line endings (\r\n) instead of unix-style (just \n) -- when a script in this format, the \r gets treated as part of the commands. In this instance, it's getting included in $emplid and therefore in the filename.</p>
<p>Many platforms support the <code>dos2unix</code> co... | <p>It sounds like your script file has DOS-style line endings (\r\n) instead of unix-style (just \n) -- when a script in this format, the \r gets treated as part of the commands. In this instance, it's getting included in $emplid and therefore in the filename.</p> <p>Many platforms support the <code>dos2unix</code> co... | 387, 390, 25299 | bash, cp, shell | <h1>Shell Scripting unwanted '?' character at the end of file name</h1>
<p>I get an unwanted '?' at the end of my file name while doing this: </p>
<pre><code>emplid=$(grep -a "Student ID" "$i".txt | sed 's/(Student ID: //g' | sed 's/)Tj//g' )
#gets emplid by doing a grep from some text file
echo "$emplid" #print... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,645 | bash | # Shell Scripting unwanted '?' character at the end of file name
I get an unwanted '?' at the end of my file name while doing this:
```
emplid=$(grep -a "Student ID" "$i".txt | sed 's/(Student ID: //g' | sed 's/)Tj//g' )
#gets emplid by doing a grep from some text file
echo "$emplid" #prints employee id correct... | It sounds like your script file has DOS-style line endings (\r\n) instead of unix-style (just \n) -- when a script in this format, the \r gets treated as part of the commands. In this instance, it's getting included in $emplid and therefore in the filename.
Many platforms support the `dos2unix` command to convert the ... |
10224921 | How to create a temporary file with portable shell in a secure way? | 13 | 2012-04-19 09:08:02 | <p>I want to create a temporary file in POSIX shell (<code>/bin/sh</code>). </p>
<p>I found out that <code>mktemp(1)</code> doens't exist on my AIX box, and according to <a href="https://stackoverflow.com/questions/2792675/how-portable-is-mktemp1">How portable is mktemp(1)?</a>, it isn't that portable and/or secure an... | 4,090 | 24,760 | 2025-01-19 14:32:10 | 10,235,393 | 14 | 2012-04-19 19:30:22 | 1,296,116 | 2012-04-23 12:04:12 | https://stackoverflow.com/q/10224921 | https://stackoverflow.com/a/10235393 | <p>Why not use <code>/dev/random</code>? </p>
<p>It could be neater with perl but od and awk will do, something like:</p>
<pre><code>tempfile=XXX-$(od -N4 -tu /dev/random | awk 'NR==1 {print $2} {}')
</code></pre>
| <p>Why not use <code>/dev/random</code>? </p> <p>It could be neater with perl but od and awk will do, something like:</p> <pre><code>tempfile=XXX-$(od -N4 -tu /dev/random | awk 'NR==1 {print $2} {}') </code></pre> | 390, 1407, 1993, 17512, 63811 | portability, posix, secure-coding, shell, temporary-files | <h1>How to create a temporary file with portable shell in a secure way?</h1>
<p>I want to create a temporary file in POSIX shell (<code>/bin/sh</code>). </p>
<p>I found out that <code>mktemp(1)</code> doens't exist on my AIX box, and according to <a href="https://stackoverflow.com/questions/2792675/how-portable-is-mkt... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,646 | bash | # How to create a temporary file with portable shell in a secure way?
I want to create a temporary file in POSIX shell (`/bin/sh`).
I found out that `mktemp(1)` doens't exist on my AIX box, and according to [How portable is mktemp(1)?](https://stackoverflow.com/questions/2792675/how-portable-is-mktemp1), it isn't tha... | Why not use `/dev/random`?
It could be neater with perl but od and awk will do, something like:
```
tempfile=XXX-$(od -N4 -tu /dev/random | awk 'NR==1 {print $2} {}')
``` |
8100334 | Best Icon size for displaying in the tray | 13 | 2011-11-11 21:41:20 | <p>I am working on a Delphi program which will display an icon on the "tray". I am doing it "the hard way" (using the Shell_NotifyIcon api, etc and not a component, for reasons outside the point here). It's working fine but sometimes it seems like the icon is a little "blurry" in some systems. Now, I have experimented ... | 24,224 | 218,587 | 2017-11-17 20:30:46 | 8,100,520 | 14 | 2011-11-11 22:02:11 | 505,088 | 2011-11-12 13:48:33 | https://stackoverflow.com/q/8100334 | https://stackoverflow.com/a/8100520 | <p>You should be using 32bpp icons with partial transparency for best effect.</p>
<p>The icon uses the small system size. Get this by calling <code>GetSystemMetrics</code> passing <code>SM_CXSMICON</code>. If you use font scaling this can be, for example, 20px rather than the more common 16px. I've never found MS docu... | <p>You should be using 32bpp icons with partial transparency for best effect.</p> <p>The icon uses the small system size. Get this by calling <code>GetSystemMetrics</code> passing <code>SM_CXSMICON</code>. If you use font scaling this can be, for example, 20px rather than the more common 16px. I've never found MS docu... | 118, 390, 889, 5692 | delphi, shell, system-tray, winapi | <h1>Best Icon size for displaying in the tray</h1>
<p>I am working on a Delphi program which will display an icon on the "tray". I am doing it "the hard way" (using the Shell_NotifyIcon api, etc and not a component, for reasons outside the point here). It's working fine but sometimes it seems like the icon is a little ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,647 | bash | # Best Icon size for displaying in the tray
I am working on a Delphi program which will display an icon on the "tray". I am doing it "the hard way" (using the Shell_NotifyIcon api, etc and not a component, for reasons outside the point here). It's working fine but sometimes it seems like the icon is a little "blurry" ... | You should be using 32bpp icons with partial transparency for best effect.
The icon uses the small system size. Get this by calling `GetSystemMetrics` passing `SM_CXSMICON`. If you use font scaling this can be, for example, 20px rather than the more common 16px. I've never found MS documentation for this fact but you ... |
5230886 | Please explain set-content $zipfilename ("PK" + [char]5 + [char]6 + ("$([char]0)" * 18)) line of Powershell Script | 13 | 2011-03-08 09:59:54 | <p>After investigating how to create a zip file with Powershell I found the following very helpful <a href="http://blogs.msdn.com/b/daiken/archive/2007/02/12/compress-files-with-windows-powershell-then-package-a-windows-vista-sidebar-gadget.aspx" rel="noreferrer">link</a> which describes how to create a zip file using ... | 4,006 | 336,426 | 2014-10-06 19:59:54 | 5,231,292 | 14 | 2011-03-08 10:36:24 | 236,131 | 2014-10-06 19:59:54 | https://stackoverflow.com/q/5230886 | https://stackoverflow.com/a/5231292 | <p>By using <code>("PK" + [char]5 + [char]6 + ("$([char]0)" * 18))</code> as the value to <code>set-Content</code>, we are simply adding the file header and creating a 0 byte <code>.zip</code> file.</p>
<p>To understand this, you may want to read under the section file headers:</p>
<ul>
<li><a href="http://en.wikiped... | <p>By using <code>("PK" + [char]5 + [char]6 + ("$([char]0)" * 18))</code> as the value to <code>set-Content</code>, we are simply adding the file header and creating a 0 byte <code>.zip</code> file.</p> <p>To understand this, you may want to read under the section file headers:</p> <ul> <li><a href="http://en.wikiped... | 526, 881 | powershell, zip | <h1>Please explain set-content $zipfilename ("PK" + [char]5 + [char]6 + ("$([char]0)" * 18)) line of Powershell Script</h1>
<p>After investigating how to create a zip file with Powershell I found the following very helpful <a href="http://blogs.msdn.com/b/daiken/archive/2007/02/12/compress-files-with-windows-powershell... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,648 | bash | # Please explain set-content $zipfilename ("PK" + [char]5 + [char]6 + ("$([char]0)" * 18)) line of Powershell Script
After investigating how to create a zip file with Powershell I found the following very helpful [link](http://blogs.msdn.com/b/daiken/archive/2007/02/12/compress-files-with-windows-powershell-then-packa... | By using `("PK" + [char]5 + [char]6 + ("$([char]0)" * 18))` as the value to `set-Content`, we are simply adding the file header and creating a 0 byte `.zip` file.
To understand this, you may want to read under the section file headers:
- [Magic number (programming)](http://en.wikipedia.org/wiki/Magic_number_(programm... |
2352380 | How to get extension of a file in shell script | 13 | 2010-02-28 19:45:26 | <p>I am trying to get file extension for a file in shell script. But without any luck.</p>
<p>The command I am using is </p>
<pre><code>file_ext=${filename##*.}
</code></pre>
<p>and</p>
<pre><code>file_ext = $filename |awk -F . '{if (NF>1) {print $NF}}'
</code></pre>
<p>But both of the commands failed to put va... | 33,130 | 197,125 | 2022-06-16 17:40:09 | 2,352,397 | 14 | 2010-02-28 19:50:38 | 258,267 | 2022-06-16 17:40:09 | https://stackoverflow.com/q/2352380 | https://stackoverflow.com/a/2352397 | <p>Spaces hurt.</p>
<p>Anyway you should do:</p>
<pre><code>file_ext=$(echo $filename | awk -F . '{if (NF>1) {print $NF}}')
</code></pre>
<p>[Edit] Better suggestion by Martin:</p>
<pre><code>file_ext=$(printf '%s' "$filename" | awk -F . '{if (NF>1) {print $NF}}')
</code></pre>
<p>That will store in <co... | <p>Spaces hurt.</p> <p>Anyway you should do:</p> <pre><code>file_ext=$(echo $filename | awk -F . '{if (NF>1) {print $NF}}') </code></pre> <p>[Edit] Better suggestion by Martin:</p> <pre><code>file_ext=$(printf '%s' "$filename" | awk -F . '{if (NF>1) {print $NF}}') </code></pre> <p>That will store in <co... | 58, 390 | linux, shell | <h1>How to get extension of a file in shell script</h1>
<p>I am trying to get file extension for a file in shell script. But without any luck.</p>
<p>The command I am using is </p>
<pre><code>file_ext=${filename##*.}
</code></pre>
<p>and</p>
<pre><code>file_ext = $filename |awk -F . '{if (NF>1) {print $NF}}'
</c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,649 | bash | # How to get extension of a file in shell script
I am trying to get file extension for a file in shell script. But without any luck.
The command I am using is
```
file_ext=${filename##*.}
```
and
```
file_ext = $filename |awk -F . '{if (NF>1) {print $NF}}'
```
But both of the commands failed to put value in varia... | Spaces hurt.
Anyway you should do:
```
file_ext=$(echo $filename | awk -F . '{if (NF>1) {print $NF}}')
```
[Edit] Better suggestion by Martin:
```
file_ext=$(printf '%s' "$filename" | awk -F . '{if (NF>1) {print $NF}}')
```
That will store in `$file_ext` the output of the command. |
1846416 | Using .NET library from PowerShell | 13 | 2009-12-04 11:34:15 | <p>I have a PowerShell snap-in for manipulating a database. The snap-in itself is just a wrapper for the main library implemented in a separate .NET DLL all written in c#.</p>
<p>I have registered both the snap-in and the implementation DLLs with the GAC using installutil.exe</p>
<p>Whilst the snap-in works fine in P... | 15,546 | 42,109 | 2009-12-05 05:13:12 | 1,846,434 | 14 | 2009-12-04 11:37:44 | 63,627 | 2009-12-04 11:37:44 | https://stackoverflow.com/q/1846416 | https://stackoverflow.com/a/1846434 | <pre><code>Add-Type -AssemblyName "Your.Assembly.Name"
</code></pre>
<p>Kindness,</p>
<p>Dan</p>
| <pre><code>Add-Type -AssemblyName "Your.Assembly.Name" </code></pre> <p>Kindness,</p> <p>Dan</p> | 526 | powershell | <h1>Using .NET library from PowerShell</h1>
<p>I have a PowerShell snap-in for manipulating a database. The snap-in itself is just a wrapper for the main library implemented in a separate .NET DLL all written in c#.</p>
<p>I have registered both the snap-in and the implementation DLLs with the GAC using installutil.ex... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,650 | bash | # Using .NET library from PowerShell
I have a PowerShell snap-in for manipulating a database. The snap-in itself is just a wrapper for the main library implemented in a separate .NET DLL all written in c#.
I have registered both the snap-in and the implementation DLLs with the GAC using installutil.exe
Whilst the sn... | ```
Add-Type -AssemblyName "Your.Assembly.Name"
```
Kindness,
Dan |
683776 | How to use "xargs" properly when argument list is too long | 13 | 2009-03-25 22:28:25 | <p>Can someone please give me an example of using xargs on the below operation?</p>
<pre><code>tar c $dir/temp/*.parse\
| lzma -9 > $dir/backup/$(date '+%Y-%m-%d')-archive.tar.lzma
</code></pre>
<p>I get the error from bash "<b>/bin/tar: Argument list too long</b>"</p>
<p>Particularily I am trying to do LZMA ... | 22,324 | 82,856 | 2009-03-25 23:15:36 | 683,808 | 14 | 2009-03-25 22:38:52 | 40,342 | 2009-03-25 22:38:52 | https://stackoverflow.com/q/683776 | https://stackoverflow.com/a/683808 | <p>Expanding on CristopheDs answer and assuming you're using bash:</p>
<pre><code>tar c --files-from <(find $dir/temp -maxdepth 1 -name "*.parse") | lzma -9 > $dir/backup/$(date '+%Y-%m-%d')-archive.tar.lzma
</code></pre>
<p>The reason <code>xargs</code> doesn't help you here is that it will do multiple invocat... | <p>Expanding on CristopheDs answer and assuming you're using bash:</p> <pre><code>tar c --files-from <(find $dir/temp -maxdepth 1 -name "*.parse") | lzma -9 > $dir/backup/$(date '+%Y-%m-%d')-archive.tar.lzma </code></pre> <p>The reason <code>xargs</code> doesn't help you here is that it will do multiple invocat... | 34, 58, 387 | bash, linux, unix | <h1>How to use "xargs" properly when argument list is too long</h1>
<p>Can someone please give me an example of using xargs on the below operation?</p>
<pre><code>tar c $dir/temp/*.parse\
| lzma -9 > $dir/backup/$(date '+%Y-%m-%d')-archive.tar.lzma
</code></pre>
<p>I get the error from bash "<b>/bin/tar: Argum... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,651 | bash | # How to use "xargs" properly when argument list is too long
Can someone please give me an example of using xargs on the below operation?
```
tar c $dir/temp/*.parse\
| lzma -9 > $dir/backup/$(date '+%Y-%m-%d')-archive.tar.lzma
```
I get the error from bash "**/bin/tar: Argument list too long**"
Particularily I... | Expanding on CristopheDs answer and assuming you're using bash:
```
tar c --files-from <(find $dir/temp -maxdepth 1 -name "*.parse") | lzma -9 > $dir/backup/$(date '+%Y-%m-%d')-archive.tar.lzma
```
The reason `xargs` doesn't help you here is that it will do multiple invocations until all arguments have been used. Thi... |
53823386 | Programmatically get number of stashes in git | 12 | 2018-12-17 21:42:15 | <p>My "oldest" stash in a project is something I need to re-apply from time to time. (Yes, there's a reason for this, and yes, it's terrible, but fixing the underlying issue would be more time-consuming than just using <code>git stash</code> for now.)</p>
<p>However, the oldest stash has the highest number in the list... | 2,544 | 1,858,225 | 2024-10-22 15:42:49 | 53,823,705 | 14 | 2018-12-17 22:09:56 | 947,357 | 2024-10-22 15:42:49 | https://stackoverflow.com/q/53823386 | https://stackoverflow.com/a/53823705 | <p>Given a small sample repository with this stashes:</p>
<pre><code>> git stash list
stash@{0}: WIP on foo/master: d9184b5 ...
stash@{1}: WIP on foo/master: d9184b5 ...
</code></pre>
<p>this gives you the <em>number</em> of stash entries:</p>
<pre><code>> git rev-list --walk-reflogs --ignore-missing --count refs... | <p>Given a small sample repository with this stashes:</p> <pre><code>> git stash list stash@{0}: WIP on foo/master: d9184b5 ... stash@{1}: WIP on foo/master: d9184b5 ... </code></pre> <p>this gives you the <em>number</em> of stash entries:</p> <pre><code>> git rev-list --walk-reflogs --ignore-missing --count refs... | 119, 390, 13091 | git, git-stash, shell | <h1>Programmatically get number of stashes in git</h1>
<p>My "oldest" stash in a project is something I need to re-apply from time to time. (Yes, there's a reason for this, and yes, it's terrible, but fixing the underlying issue would be more time-consuming than just using <code>git stash</code> for now.)</p>
<p>Howev... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,652 | bash | # Programmatically get number of stashes in git
My "oldest" stash in a project is something I need to re-apply from time to time. (Yes, there's a reason for this, and yes, it's terrible, but fixing the underlying issue would be more time-consuming than just using `git stash` for now.)
However, the oldest stash has th... | Given a small sample repository with this stashes:
```
> git stash list
stash@{0}: WIP on foo/master: d9184b5 ...
stash@{1}: WIP on foo/master: d9184b5 ...
```
this gives you the *number* of stash entries:
```
> git rev-list --walk-reflogs --ignore-missing --count refs/stash
2
```
But you have to substract `1` to g... |
51522337 | Putting an array value into a string in powershell | 12 | 2018-07-25 15:11:32 | <p>I was having difficulty understanding how String values work with arrays in powershell. I wanted to know the correct syntax for placing an array into a string. Currently, this is what I am trying. The square brackets seem to be registered as part of the string rather than the variable.</p>
<pre><code>$array = @(2,3,... | 10,662 | 10,105,735 | 2023-12-09 22:16:02 | 51,522,395 | 14 | 2018-07-25 15:14:40 | 1,847,883 | 2018-07-25 19:45:52 | https://stackoverflow.com/q/51522337 | https://stackoverflow.com/a/51522395 | <p>The <code>[2]</code> is being read as a string. Use <code>$($array[2])</code> in order to run that part as powershell.</p>
<pre><code>$array = @(2,3,5)
"I have $($array[2]) apples"
</code></pre>
<p>This outputs <code>I have 5 apples</code>.</p>
<p>In the comments you asked how to do a for loop for this.</p>
<p>... | <p>The <code>[2]</code> is being read as a string. Use <code>$($array[2])</code> in order to run that part as powershell.</p> <pre><code>$array = @(2,3,5) "I have $($array[2]) apples" </code></pre> <p>This outputs <code>I have 5 apples</code>.</p> <p>In the comments you asked how to do a for loop for this.</p> <p>... | 114, 139, 526 | arrays, powershell, string | <h1>Putting an array value into a string in powershell</h1>
<p>I was having difficulty understanding how String values work with arrays in powershell. I wanted to know the correct syntax for placing an array into a string. Currently, this is what I am trying. The square brackets seem to be registered as part of the str... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,653 | bash | # Putting an array value into a string in powershell
I was having difficulty understanding how String values work with arrays in powershell. I wanted to know the correct syntax for placing an array into a string. Currently, this is what I am trying. The square brackets seem to be registered as part of the string rathe... | The `[2]` is being read as a string. Use `$($array[2])` in order to run that part as powershell.
```
$array = @(2,3,5)
"I have $($array[2]) apples"
```
This outputs `I have 5 apples`.
In the comments you asked how to do a for loop for this.
In powershell you should pipe whenever you can, the pipe command is `|`
`... |
50391334 | How to include dashes in the format string of bash printf? | 12 | 2018-05-17 12:20:13 | <p>I'm trying to concatenate strings in bash using <code>printf</code> by following <a href="https://linuxconfig.org/bash-printf-syntax-basics-with-examples" rel="noreferrer">the examples here</a>:</p>
<pre><code>$ printf "%s " "hello printf" "in" "bash script"
</code></pre>
<p>The above works. But when I try to add ... | 4,747 | 4,196,578 | 2018-05-17 12:47:30 | 50,391,361 | 14 | 2018-05-17 12:21:43 | 5,291,015 | 2018-05-17 12:47:30 | https://stackoverflow.com/q/50391334 | https://stackoverflow.com/a/50391361 | <p>Always specify end of command line flags when using strings involving <code>--</code>. In general the shell commands need to know where their positional argument start at. So by forcing <code>--</code> after <code>printf</code> we let it know that the subsequent arguments are to be interpreted as its arguments. At t... | <p>Always specify end of command line flags when using strings involving <code>--</code>. In general the shell commands need to know where their positional argument start at. So by forcing <code>--</code> after <code>printf</code> we let it know that the subsequent arguments are to be interpreted as its arguments. At t... | 387, 1156 | bash, printf | <h1>How to include dashes in the format string of bash printf?</h1>
<p>I'm trying to concatenate strings in bash using <code>printf</code> by following <a href="https://linuxconfig.org/bash-printf-syntax-basics-with-examples" rel="noreferrer">the examples here</a>:</p>
<pre><code>$ printf "%s " "hello printf" "in" "ba... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,654 | bash | # How to include dashes in the format string of bash printf?
I'm trying to concatenate strings in bash using `printf` by following [the examples here](https://linuxconfig.org/bash-printf-syntax-basics-with-examples):
```
$ printf "%s " "hello printf" "in" "bash script"
```
The above works. But when I try to add to t... | Always specify end of command line flags when using strings involving `--`. In general the shell commands need to know where their positional argument start at. So by forcing `--` after `printf` we let it know that the subsequent arguments are to be interpreted as its arguments. At this point, afterwards using `--` wil... |
49540457 | sed gives error with unterminated substitute in regular expression | 12 | 2018-03-28 17:11:14 | <p>I trying to substitute string "x.x.x.x" in a file and output the results to another file. It is giving me error unterminated substitute in regular expression</p>
<p>here is the code</p>
<pre><code>sed 's/x.x.x.x/'$bigip_management_ip'/g' temp.tt >> variables.tf
sed: 1: "s/x.x.x.x/": unterminated substitute i... | 51,297 | 7,119,673 | 2021-03-30 04:15:56 | 49,540,617 | 14 | 2018-03-28 17:21:08 | 1,899,640 | 2018-03-28 17:21:08 | https://stackoverflow.com/q/49540457 | https://stackoverflow.com/a/49540617 | <p>Here's a MCVE for your problem:</p>
<pre><code>bigip_management_ip=" 54.83.174.153"
sed 's/x.x.x.x/'$bigip_management_ip'/g'
</code></pre>
<p>When executed on macOS, you get:</p>
<pre><code>sed: 1: "s/x.x.x.x/": unterminated substitute in regular expression
</code></pre>
<p>The problem is the leading space in th... | <p>Here's a MCVE for your problem:</p> <pre><code>bigip_management_ip=" 54.83.174.153" sed 's/x.x.x.x/'$bigip_management_ip'/g' </code></pre> <p>When executed on macOS, you get:</p> <pre><code>sed: 1: "s/x.x.x.x/": unterminated substitute in regular expression </code></pre> <p>The problem is the leading space in th... | 390, 990, 5282 | awk, sed, shell | <h1>sed gives error with unterminated substitute in regular expression</h1>
<p>I trying to substitute string "x.x.x.x" in a file and output the results to another file. It is giving me error unterminated substitute in regular expression</p>
<p>here is the code</p>
<pre><code>sed 's/x.x.x.x/'$bigip_management_ip'/g' t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,655 | bash | # sed gives error with unterminated substitute in regular expression
I trying to substitute string "x.x.x.x" in a file and output the results to another file. It is giving me error unterminated substitute in regular expression
here is the code
```
sed 's/x.x.x.x/'$bigip_management_ip'/g' temp.tt >> variables.tf
sed:... | Here's a MCVE for your problem:
```
bigip_management_ip=" 54.83.174.153"
sed 's/x.x.x.x/'$bigip_management_ip'/g'
```
When executed on macOS, you get:
```
sed: 1: "s/x.x.x.x/": unterminated substitute in regular expression
```
The problem is the leading space in the variable causing word splitting due to a lack of ... |
47702490 | ShellCheck warning: "Iterating over ls output is fragile. Use globs. [SC2045]" | 12 | 2017-12-07 19:34:14 | <p>I am getting a ShellCheck warning [SC2045] for the second line in the code below. Is it fine to ignore it as I am making sure the directory is not empty before I try the last <code>ls</code>?</p>
<pre><code> if [ "$(ls -A "$retryDir")" ] ; then
for thisRetryFile in $(ls "$retryDir"/*.tar.gz) ; do
scp -... | 10,367 | 472,427 | 2018-01-04 22:27:53 | 47,702,732 | 14 | 2017-12-07 19:50:31 | 641,955 | 2017-12-07 20:40:05 | https://stackoverflow.com/q/47702490 | https://stackoverflow.com/a/47702732 | <p>Use the loop with a glob, and also set <code>nullglob</code> to avoid executing <code>scp</code> in case the pattern doesn't match anything.
And you don't need the outer <code>if</code> condition either,
since the <code>for</code> with <code>nullglob</code> effectively takes care of that:</p>
<pre><code>shopt -s nu... | <p>Use the loop with a glob, and also set <code>nullglob</code> to avoid executing <code>scp</code> in case the pattern doesn't match anything. And you don't need the outer <code>if</code> condition either, since the <code>for</code> with <code>nullglob</code> effectively takes care of that:</p> <pre><code>shopt -s nu... | 387, 3589, 117067 | bash, ls, shellcheck | <h1>ShellCheck warning: "Iterating over ls output is fragile. Use globs. [SC2045]"</h1>
<p>I am getting a ShellCheck warning [SC2045] for the second line in the code below. Is it fine to ignore it as I am making sure the directory is not empty before I try the last <code>ls</code>?</p>
<pre><code> if [ "$(ls -A "$retr... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,656 | bash | # ShellCheck warning: "Iterating over ls output is fragile. Use globs. [SC2045]"
I am getting a ShellCheck warning [SC2045] for the second line in the code below. Is it fine to ignore it as I am making sure the directory is not empty before I try the last `ls`?
```
if [ "$(ls -A "$retryDir")" ] ; then
for thisR... | Use the loop with a glob, and also set `nullglob` to avoid executing `scp` in case the pattern doesn't match anything.
And you don't need the outer `if` condition either,
since the `for` with `nullglob` effectively takes care of that:
```
shopt -s nullglob
for thisRetryFile in "$retryDir"/*.tar.gz; do
scp -o Conn... |
44004052 | Generate Self-signed certificate with Root CA Signer | 12 | 2017-05-16 14:18:29 | <p>Scenario: I am using PowerShell on <em>Windows Server 2012r2</em> to generate a Root certificate and want to use that to sign a newly created Intermediate and Web certificate in dynamic generated (and destroyed) dev/test environments. The scripts are deployed remotely, and the intent is to keep it pure PowerShell if... | 29,849 | 1,010,036 | 2021-09-05 08:53:27 | 44,057,365 | 14 | 2017-05-18 20:39:27 | 1,010,036 | 2017-11-28 06:28:56 | https://stackoverflow.com/q/44004052 | https://stackoverflow.com/a/44057365 | <p>The ultimate solution in my case, avoiding makecert and openssl was to use Powershell and BouncyCastle. I forked the PSBouncyCastle repo from <a href="https://github.com/rlipscombe/PSBouncyCastle" rel="noreferrer">PSBouncyCastle</a> by RLipscombe and pushed 1.8.1 Bouncy Castle in. My forked version is the one I've u... | <p>The ultimate solution in my case, avoiding makecert and openssl was to use Powershell and BouncyCastle. I forked the PSBouncyCastle repo from <a href="https://github.com/rlipscombe/PSBouncyCastle" rel="noreferrer">PSBouncyCastle</a> by RLipscombe and pushed 1.8.1 Bouncy Castle in. My forked version is the one I've u... | 526, 74269, 96533 | powershell, sql-server-2012, windows-server-2012-r2 | <h1>Generate Self-signed certificate with Root CA Signer</h1>
<p>Scenario: I am using PowerShell on <em>Windows Server 2012r2</em> to generate a Root certificate and want to use that to sign a newly created Intermediate and Web certificate in dynamic generated (and destroyed) dev/test environments. The scripts are depl... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,657 | bash | # Generate Self-signed certificate with Root CA Signer
Scenario: I am using PowerShell on *Windows Server 2012r2* to generate a Root certificate and want to use that to sign a newly created Intermediate and Web certificate in dynamic generated (and destroyed) dev/test environments. The scripts are deployed remotely, a... | The ultimate solution in my case, avoiding makecert and openssl was to use Powershell and BouncyCastle. I forked the PSBouncyCastle repo from [PSBouncyCastle](https://github.com/rlipscombe/PSBouncyCastle) by RLipscombe and pushed 1.8.1 Bouncy Castle in. My forked version is the one I've used for the script, the fork re... |
39913481 | Powershell: naming convention for bool functions | 12 | 2016-10-07 09:05:11 | <p>I am having problem with finding any appropriate naming convention in PowerShell (verb-noun) that would reflect programming:</p>
<pre><code>IsApple() {
return Fruit.Type == Fruits.Apple
}
</code></pre>
<p><strong>Is there such a convention in PS?</strong></p>
<p>I did not find any cmdlets having 'is' or 'has'... | 3,269 | 4,744,069 | 2019-11-25 20:44:45 | 39,913,953 | 14 | 2016-10-07 09:29:58 | 978,511 | 2019-11-25 20:44:45 | https://stackoverflow.com/q/39913481 | https://stackoverflow.com/a/39913953 | <p>In PowerShell, there're approved verbs for a function. They are different from version to version, but you can get yours using the <code>Get-Verb</code> cmdlet.</p>
<p>As for your case, I could think of <code>Assert-IsApple</code> or <code>Test-IsApple</code></p>
<p>For reference, here is the <a href="https://lear... | <p>In PowerShell, there're approved verbs for a function. They are different from version to version, but you can get yours using the <code>Get-Verb</code> cmdlet.</p> <p>As for your case, I could think of <code>Assert-IsApple</code> or <code>Test-IsApple</code></p> <p>For reference, here is the <a href="https://lear... | 526, 2848, 7028 | boolean, naming-conventions, powershell | <h1>Powershell: naming convention for bool functions</h1>
<p>I am having problem with finding any appropriate naming convention in PowerShell (verb-noun) that would reflect programming:</p>
<pre><code>IsApple() {
return Fruit.Type == Fruits.Apple
}
</code></pre>
<p><strong>Is there such a convention in PS?</stron... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,658 | bash | # Powershell: naming convention for bool functions
I am having problem with finding any appropriate naming convention in PowerShell (verb-noun) that would reflect programming:
```
IsApple() {
return Fruit.Type == Fruits.Apple
}
```
**Is there such a convention in PS?**
I did not find any cmdlets having 'is' or ... | In PowerShell, there're approved verbs for a function. They are different from version to version, but you can get yours using the `Get-Verb` cmdlet.
As for your case, I could think of `Assert-IsApple` or `Test-IsApple`
For reference, here is the [link to the official list of verbs for PowerShell](https://learn.micro... |
35022078 | How do I output ASCII Art to console? | 12 | 2016-01-26 19:20:27 | <p>I would like to spice up my scripts with some ASCII art to be displayed on completion of a process.</p>
<p>I have 2 thoughts on how to output ASCII art to console. Hopefully someone who knows more than I do can direct us to what the command is and what method is 'Better'.</p>
<ol>
<li><p>Output a multi-line <code... | 31,871 | 5,022,269 | 2018-05-10 13:10:52 | 35,022,366 | 14 | 2016-01-26 19:35:11 | 3,829,407 | 2018-05-10 13:10:52 | https://stackoverflow.com/q/35022078 | https://stackoverflow.com/a/35022366 | <p>Just use a newline delimited string, here-string or <code>Get-Content -Raw</code> if you have a source file. Both will give you a single multiline string without fuss. One thing the here-string is good for is not having to worry about the quotes you use (which could be a distinct possibility with ASCII art). An exam... | <p>Just use a newline delimited string, here-string or <code>Get-Content -Raw</code> if you have a source file. Both will give you a single multiline string without fuss. One thing the here-string is good for is not having to worry about the quotes you use (which could be a distinct possibility with ASCII art). An exam... | 488, 526, 1843 | ascii, console, powershell | <h1>How do I output ASCII Art to console?</h1>
<p>I would like to spice up my scripts with some ASCII art to be displayed on completion of a process.</p>
<p>I have 2 thoughts on how to output ASCII art to console. Hopefully someone who knows more than I do can direct us to what the command is and what method is 'Bett... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,659 | bash | # How do I output ASCII Art to console?
I would like to spice up my scripts with some ASCII art to be displayed on completion of a process.
I have 2 thoughts on how to output ASCII art to console. Hopefully someone who knows more than I do can direct us to what the command is and what method is 'Better'.
1. Output a... | Just use a newline delimited string, here-string or `Get-Content -Raw` if you have a source file. Both will give you a single multiline string without fuss. One thing the here-string is good for is not having to worry about the quotes you use (which could be a distinct possibility with ASCII art). An example using a he... |
32878146 | Too many open files error while running awk command | 12 | 2015-10-01 01:35:29 | <p>I am trying to split a big file based on a pattern.
I am using awk command for this. After creating certain number of files it gives error: Too many open files. </p>
<p>Command is:</p>
<pre><code>awk '/pattern here/{i++}{print > "file"i}' /input file
</code></pre>
<p>Can someone tell me how to close these file... | 6,968 | 4,695,617 | 2021-04-08 14:35:25 | 32,878,168 | 14 | 2015-10-01 01:39:07 | 3,030,305 | 2021-04-08 14:35:25 | https://stackoverflow.com/q/32878146 | https://stackoverflow.com/a/32878168 | <p>Before starting on the next file, close the previous one:</p>
<pre class="lang-sh prettyprint-override"><code> awk '/pattern here/{close("file"i); i++}{print > "file"i}' InputFile
</code></pre>
| <p>Before starting on the next file, close the previous one:</p> <pre class="lang-sh prettyprint-override"><code> awk '/pattern here/{close("file"i); i++}{print > "file"i}' InputFile </code></pre> | 58, 390, 990 | awk, linux, shell | <h1>Too many open files error while running awk command</h1>
<p>I am trying to split a big file based on a pattern.
I am using awk command for this. After creating certain number of files it gives error: Too many open files. </p>
<p>Command is:</p>
<pre><code>awk '/pattern here/{i++}{print > "file"i}' /input file
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,660 | bash | # Too many open files error while running awk command
I am trying to split a big file based on a pattern.
I am using awk command for this. After creating certain number of files it gives error: Too many open files.
Command is:
```
awk '/pattern here/{i++}{print > "file"i}' /input file
```
Can someone tell me how to... | Before starting on the next file, close the previous one:
```
awk '/pattern here/{close("file"i); i++}{print > "file"i}' InputFile
``` |
30642883 | How to properly close Internet Explorer when launched from PowerShell? | 12 | 2015-06-04 11:39:25 | <p>There was a set of recently asked questions about doing something with Internet Explorer via PowerShell. All of them contain codes to launch IE from PowerShell as an object, via <code>$ie=new-object -comobject InternetExplorer.Application</code>. The problem is, the proper way of <strong>closing</strong> IE that con... | 31,826 | 1,627,055 | 2021-05-23 09:59:49 | 30,643,155 | 14 | 2015-06-04 11:53:30 | 1,630,171 | 2017-07-12 08:00:11 | https://stackoverflow.com/q/30642883 | https://stackoverflow.com/a/30643155 | <p>Simply calling the <code>Quit()</code> method should normally suffice for gracefully terminating Internet Explorer processes, regardless of whether they were created by running <code>iexplore.exe</code> or by instantiating a COM object in PowerShell.</p>
<p>Demonstration:</p>
<pre>
PS C:\> <b>$env:PROCESSOR_ARCHIT... | <p>Simply calling the <code>Quit()</code> method should normally suffice for gracefully terminating Internet Explorer processes, regardless of whether they were created by running <code>iexplore.exe</code> or by instantiating a COM object in PowerShell.</p> <p>Demonstration:</p> <pre> PS C:\> <b>$env:PROCESSOR_ARCHIT... | 162, 526, 1189 | com, internet-explorer, powershell | <h1>How to properly close Internet Explorer when launched from PowerShell?</h1>
<p>There was a set of recently asked questions about doing something with Internet Explorer via PowerShell. All of them contain codes to launch IE from PowerShell as an object, via <code>$ie=new-object -comobject InternetExplorer.Applicatio... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,661 | bash | # How to properly close Internet Explorer when launched from PowerShell?
There was a set of recently asked questions about doing something with Internet Explorer via PowerShell. All of them contain codes to launch IE from PowerShell as an object, via `$ie=new-object -comobject InternetExplorer.Application`. The proble... | Simply calling the `Quit()` method should normally suffice for gracefully terminating Internet Explorer processes, regardless of whether they were created by running `iexplore.exe` or by instantiating a COM object in PowerShell.
Demonstration:
```
PS C:\> $env:PROCESSOR_ARCHITECTURE
AMD64
PS C:\> (Get-WmiObject -Clas... |
29783092 | regexp to match java package name | 12 | 2015-04-21 21:05:02 | <p>I want to check if arguments passed in stdin to see if they conform to a valid java package name. The regex I have is not working properly. With the following code passing in com.example.package I receive the error message. I'm not sure what is wrong with my regex?</p>
<pre><code> regex="/^[a-z][a-z0-9_]*(\.[a-z0-9... | 10,418 | 2,827,885 | 2022-06-22 16:00:57 | 29,783,266 | 14 | 2015-04-21 21:16:12 | 1,404,992 | 2015-04-21 21:22:30 | https://stackoverflow.com/q/29783092 | https://stackoverflow.com/a/29783266 | <p>You are pretty close to the correct solution. Just tweak the regex a bit (also consider @fede's simpler regex) and set the <code>nocasematch</code> option for case insensitive matching. For example:</p>
<pre><code>regex='^[a-z][a-z0-9_]*(\.[a-z0-9_]+)+[0-9a-z_]$'
shopt -s nocasematch
if ! [[ $1 =~ $regex ]]; then
... | <p>You are pretty close to the correct solution. Just tweak the regex a bit (also consider @fede's simpler regex) and set the <code>nocasematch</code> option for case insensitive matching. For example:</p> <pre><code>regex='^[a-z][a-z0-9_]*(\.[a-z0-9_]+)+[0-9a-z_]$' shopt -s nocasematch if ! [[ $1 =~ $regex ]]; then ... | 18, 387 | bash, regex | <h1>regexp to match java package name</h1>
<p>I want to check if arguments passed in stdin to see if they conform to a valid java package name. The regex I have is not working properly. With the following code passing in com.example.package I receive the error message. I'm not sure what is wrong with my regex?</p>
<pr... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,662 | bash | # regexp to match java package name
I want to check if arguments passed in stdin to see if they conform to a valid java package name. The regex I have is not working properly. With the following code passing in com.example.package I receive the error message. I'm not sure what is wrong with my regex?
```
regex="/^[a... | You are pretty close to the correct solution. Just tweak the regex a bit (also consider @fede's simpler regex) and set the `nocasematch` option for case insensitive matching. For example:
```
regex='^[a-z][a-z0-9_]*(\.[a-z0-9_]+)+[0-9a-z_]$'
shopt -s nocasematch
if ! [[ $1 =~ $regex ]]; then
exit 2
fi
shopt -u noca... |
29081531 | Shell script print line number when it errors out | 12 | 2015-03-16 16:06:16 | <p>I have been looking for a way to print the line number inside the shell script when it errors out. </p>
<p>I came across '-x' option, which prints the line when running the shell script, but this is not exactly what I want. Maybe I could do $LINENO before every exit code? Is there a cleaner way to do it?</p>
<p>I... | 5,312 | 2,441,441 | 2015-03-16 16:15:38 | 29,081,598 | 14 | 2015-03-16 16:08:52 | 14,122 | 2015-03-16 16:15:38 | https://stackoverflow.com/q/29081531 | https://stackoverflow.com/a/29081598 | <p>Using</p>
<pre><code>PS4=':$LINENO+'
</code></pre>
<p>will add line number to the output of <code>set -x</code>.</p>
<hr>
<p>If you <em>only</em> want to print that on errors, there's some risk of running into bugs in recent interpreters. However, you can try the following (first given in <A HREF="http://stackov... | <p>Using</p> <pre><code>PS4=':$LINENO+' </code></pre> <p>will add line number to the output of <code>set -x</code>.</p> <hr> <p>If you <em>only</em> want to print that on errors, there's some risk of running into bugs in recent interpreters. However, you can try the following (first given in <A HREF="http://stackov... | 387, 390, 531 | bash, scripting, shell | <h1>Shell script print line number when it errors out</h1>
<p>I have been looking for a way to print the line number inside the shell script when it errors out. </p>
<p>I came across '-x' option, which prints the line when running the shell script, but this is not exactly what I want. Maybe I could do $LINENO before ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,663 | bash | # Shell script print line number when it errors out
I have been looking for a way to print the line number inside the shell script when it errors out.
I came across '-x' option, which prints the line when running the shell script, but this is not exactly what I want. Maybe I could do $LINENO before every exit code? I... | Using
```
PS4=':$LINENO+'
```
will add line number to the output of `set -x`.
---
If you *only* want to print that on errors, there's some risk of running into bugs in recent interpreters. However, you can try the following (first given in [this previous answer](http://stackoverflow.com/questions/64786/error-handli... |
28290635 | PowerShell passing two arrays by reference to a function | 12 | 2015-02-03 03:00:24 | <p>At the moment I am trying to pass in two array items by reference to a function I have written which loads data into those arrays. However, once this function loses scope the arrays appear as blank.</p>
<p>If I use the ref keyword to pass them into the function the first array loads up correctly. However, the secon... | 11,536 | 1,367,229 | 2018-12-28 19:39:20 | 28,291,054 | 14 | 2015-02-03 03:49:56 | 284,111 | 2018-12-28 19:39:20 | https://stackoverflow.com/q/28290635 | https://stackoverflow.com/a/28291054 | <p>I modified your example to work:</p>
<pre><code>$logConfigPath = "C:\Testing\Configuration\config.xml"
#### VARIABLES RELATING TO THE LOG FILE
# Contains the log path and log file mask
$logPaths = @()
$logFileMasks = @()
function LoadLogTailerConfig($logConfigPath, [ref]$logPaths, [ref]$logFileMasks)
{
Writ... | <p>I modified your example to work:</p> <pre><code>$logConfigPath = "C:\Testing\Configuration\config.xml" #### VARIABLES RELATING TO THE LOG FILE # Contains the log path and log file mask $logPaths = @() $logFileMasks = @() function LoadLogTailerConfig($logConfigPath, [ref]$logPaths, [ref]$logFileMasks) { Writ... | 114, 526, 11658 | arrays, pass-by-reference, powershell | <h1>PowerShell passing two arrays by reference to a function</h1>
<p>At the moment I am trying to pass in two array items by reference to a function I have written which loads data into those arrays. However, once this function loses scope the arrays appear as blank.</p>
<p>If I use the ref keyword to pass them into t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,664 | bash | # PowerShell passing two arrays by reference to a function
At the moment I am trying to pass in two array items by reference to a function I have written which loads data into those arrays. However, once this function loses scope the arrays appear as blank.
If I use the ref keyword to pass them into the function the ... | I modified your example to work:
```
$logConfigPath = "C:\Testing\Configuration\config.xml"
#### VARIABLES RELATING TO THE LOG FILE
# Contains the log path and log file mask
$logPaths = @()
$logFileMasks = @()
function LoadLogTailerConfig($logConfigPath, [ref]$logPaths, [ref]$logFileMasks)
{
Write-Debug "Loadi... |
25273403 | Windows Powershell: Shortcut for change directory | 12 | 2014-08-12 20:21:27 | <p>I just started using Windows Powershell and one major problem I've run into is when I start it, it starts me off in this directory:</p>
<pre><code>C:\Users\Username
</code></pre>
<p>However, the directory I usually need to navigate to is in something like:</p>
<pre><code>C:\Users\Username\Dropbox\Websites\2014\Pr... | 28,361 | 1,219,562 | 2024-11-26 19:38:48 | 25,274,911 | 14 | 2014-08-12 22:08:33 | 3,905,079 | 2014-08-12 22:08:33 | https://stackoverflow.com/q/25273403 | https://stackoverflow.com/a/25274911 | <p>Run this in powershell:</p>
<pre class="lang-powershell prettyprint-override"><code>start notepad $profile
</code></pre>
<p>That will open up your profile in notepad (notepad will prompt you to create it if it doesn't exist).</p>
<p>Any code you write in this <code>.ps1</code> file will be executed when powershel... | <p>Run this in powershell:</p> <pre class="lang-powershell prettyprint-override"><code>start notepad $profile </code></pre> <p>That will open up your profile in notepad (notepad will prompt you to create it if it doesn't exist).</p> <p>Any code you write in this <code>.ps1</code> file will be executed when powershel... | 390, 526, 1231, 11225 | command-line, command-line-interface, powershell, shell | <h1>Windows Powershell: Shortcut for change directory</h1>
<p>I just started using Windows Powershell and one major problem I've run into is when I start it, it starts me off in this directory:</p>
<pre><code>C:\Users\Username
</code></pre>
<p>However, the directory I usually need to navigate to is in something like:... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 9,665 | bash | # Windows Powershell: Shortcut for change directory
I just started using Windows Powershell and one major problem I've run into is when I start it, it starts me off in this directory:
```
C:\Users\Username
```
However, the directory I usually need to navigate to is in something like:
```
C:\Users\Username\Dropbox\W... | Run this in powershell:
```
start notepad $profile
```
That will open up your profile in notepad (notepad will prompt you to create it if it doesn't exist).
Any code you write in this `.ps1` file will be executed when powershell starts.
You can also set a system environment variable, like if you were to set `MYPSPA... |
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