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49311215 | What is exclamation mark at beginning of line doing in this BASH snippet? | 10 | 2018-03-16 00:01:39 | <p>I understand history expansion in C-shell and BASH, but I don't understand why the exclamation mark on the line with the <code>read</code> command is being used in this snippet from some source I'm looking at:</p>
<pre><code>#!/bin/bash
set -e
. "$(dirname "$0")/includes.sh"
! read -d '' SOME_VAR <<"EOT"
... | 2,860 | 8,075,005 | 2018-03-16 00:21:09 | 49,311,315 | 16 | 2018-03-16 00:13:21 | 827,263 | 2018-03-16 00:21:09 | https://stackoverflow.com/q/49311215 | https://stackoverflow.com/a/49311315 | <p>The <code>set -e</code> command tells bash to exit if a pipeline returns a non-zero exit status (basically if a command fails).</p>
<p>The <code>!</code> negates the exit status, but it also inhibits the effect of <code>set -e</code>. The idea is that if a command is being executed as part of a condition, you don't... | <p>The <code>set -e</code> command tells bash to exit if a pipeline returns a non-zero exit status (basically if a command fails).</p> <p>The <code>!</code> negates the exit status, but it also inhibits the effect of <code>set -e</code>. The idea is that if a command is being executed as part of a condition, you don't... | 387, 390 | bash, shell | <h1>What is exclamation mark at beginning of line doing in this BASH snippet?</h1>
<p>I understand history expansion in C-shell and BASH, but I don't understand why the exclamation mark on the line with the <code>read</code> command is being used in this snippet from some source I'm looking at:</p>
<pre><code>#!/bin/b... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,862 | bash | # What is exclamation mark at beginning of line doing in this BASH snippet?
I understand history expansion in C-shell and BASH, but I don't understand why the exclamation mark on the line with the `read` command is being used in this snippet from some source I'm looking at:
```
#!/bin/bash
set -e
. "$(dirname "$0")... | The `set -e` command tells bash to exit if a pipeline returns a non-zero exit status (basically if a command fails).
The `!` negates the exit status, but it also inhibits the effect of `set -e`. The idea is that if a command is being executed as part of a condition, you don't want to terminate the shell. If it's prece... |
48661016 | Ansible playbook, what is the proper syntax to run a powershell script with a specific (domain) user, in an elevated mode? | 10 | 2018-02-07 10:08:53 | <p>running Ansible 2.4.2 in an offline environment, using kerberos to authenticate, </p>
<p>Via an ansible playbook, what is the proper syntax to run a powershell script with a specific (domain) user: DOMAIN\someuser, in an elevated mode?</p>
<p>By elevated mode I mean that in the Windows interface, I'd run the scrip... | 58,271 | 5,239,648 | 2018-02-08 00:09:01 | 48,675,395 | 16 | 2018-02-08 00:09:01 | 9,016,691 | 2018-02-08 00:09:01 | https://stackoverflow.com/q/48661016 | https://stackoverflow.com/a/48675395 | <p>I did the following to get it working in my playbook:</p>
<pre><code>- name: Run ps1 script in privileged mode
hosts: "{{ my_hosts }}"
become_method: runas
vars:
ansible_become_password: mysupersecretpasswrod
tasks:
- win_shell: '.\myscript.ps1'
become: yes
become_user: Administrator
<... | <p>I did the following to get it working in my playbook:</p> <pre><code>- name: Run ps1 script in privileged mode hosts: "{{ my_hosts }}" become_method: runas vars: ansible_become_password: mysupersecretpasswrod tasks: - win_shell: '.\myscript.ps1' become: yes become_user: Administrator <... | 64, 526, 86394, 104426, 117136 | ansible, ansible-2.x, kerberos-delegation, powershell, windows | <h1>Ansible playbook, what is the proper syntax to run a powershell script with a specific (domain) user, in an elevated mode?</h1>
<p>running Ansible 2.4.2 in an offline environment, using kerberos to authenticate, </p>
<p>Via an ansible playbook, what is the proper syntax to run a powershell script with a specific (... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,863 | bash | # Ansible playbook, what is the proper syntax to run a powershell script with a specific (domain) user, in an elevated mode?
running Ansible 2.4.2 in an offline environment, using kerberos to authenticate,
Via an ansible playbook, what is the proper syntax to run a powershell script with a specific (domain) user: DOM... | I did the following to get it working in my playbook:
```
- name: Run ps1 script in privileged mode
hosts: "{{ my_hosts }}"
become_method: runas
vars:
ansible_become_password: mysupersecretpasswrod
tasks:
- win_shell: '.\myscript.ps1'
become: yes
become_user: Administrator
``` |
46565019 | How to properly start a Gnome-Shell extension via command line? | 10 | 2017-10-04 12:35:03 | <p>After copying <code>myexentension@me.com</code> folder to <code>.../gnome-shell/extensions/</code> I'm executing this command on the terminal:</p>
<p><code>gnome-shell-extension-tool -e myexentension@me.com</code></p>
<p>Then, I restart my session with <kbd>Alt</kbd> + <kbd>F2</kbd> and execute <code>r</code>, and... | 9,434 | 8,394,280 | 2023-05-18 00:21:33 | 47,952,111 | 16 | 2017-12-23 11:30:56 | 1,420,237 | 2022-01-22 01:32:13 | https://stackoverflow.com/q/46565019 | https://stackoverflow.com/a/47952111 | <p>According to some answers around the internet, sending SIGHUP to the <code>gnome-shell</code> process restarts it (i. e. <code>killall -HUP gnome-shell</code>), but I haven’t been able to find a clear source on this and couldn’t find the signal handling in the code. What I do know is that this should be exactly equi... | <p>According to some answers around the internet, sending SIGHUP to the <code>gnome-shell</code> process restarts it (i. e. <code>killall -HUP gnome-shell</code>), but I haven’t been able to find a clear source on this and couldn’t find the signal handling in the code. What I do know is that this should be exactly equi... | 387, 390, 3294, 68385, 78339 | bash, gnome, gnome-shell, gnome-shell-extensions, shell | <h1>How to properly start a Gnome-Shell extension via command line?</h1>
<p>After copying <code>myexentension@me.com</code> folder to <code>.../gnome-shell/extensions/</code> I'm executing this command on the terminal:</p>
<p><code>gnome-shell-extension-tool -e myexentension@me.com</code></p>
<p>Then, I restart my se... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,864 | bash | # How to properly start a Gnome-Shell extension via command line?
After copying `myexentension@me.com` folder to `.../gnome-shell/extensions/` I'm executing this command on the terminal:
`gnome-shell-extension-tool -e myexentension@me.com`
Then, I restart my session with `Alt` + `F2` and execute `r`, and everything ... | According to some answers around the internet, sending SIGHUP to the `gnome-shell` process restarts it (i. e. `killall -HUP gnome-shell`), but I haven’t been able to find a clear source on this and couldn’t find the signal handling in the code. What I do know is that this should be exactly equivalent to `Alt+F2 r`:
``... |
47189213 | Why is bash failing to create a symbolic link in /usr/local/bin? | 10 | 2017-11-08 20:38:24 | <p>Attempting to create a symbolic link for the subl command so that I can open flies in Sublime Test 3 from the terminal. However, it fails to find the /usr/local/bin directory, even though it is in my path.</p>
<pre><code> $ ln -s /D/ProgramsD/SublimeText3/subl /usr/local/bin/subl
ln: failed to create symbolic link... | 24,865 | 8,223,706 | 2017-11-09 14:47:24 | 47,189,369 | 16 | 2017-11-08 20:46:10 | 641,955 | 2017-11-08 20:46:10 | https://stackoverflow.com/q/47189213 | https://stackoverflow.com/a/47189369 | <blockquote>
<p>ln: failed to create symbolic link '/usr/local/bin/subl': No such file or directory</p>
</blockquote>
<p>This error can happen when one of the parent directories of <code>/usr/local/bin/subl</code> don't exist.</p>
<p>Create them with:</p>
<pre><code>mkdir -p /usr/local/bin
</code></pre>
<blockquo... | <blockquote> <p>ln: failed to create symbolic link '/usr/local/bin/subl': No such file or directory</p> </blockquote> <p>This error can happen when one of the parent directories of <code>/usr/local/bin/subl</code> don't exist.</p> <p>Create them with:</p> <pre><code>mkdir -p /usr/local/bin </code></pre> <blockquo... | 387, 391, 88190 | bash, sublimetext3, terminal | <h1>Why is bash failing to create a symbolic link in /usr/local/bin?</h1>
<p>Attempting to create a symbolic link for the subl command so that I can open flies in Sublime Test 3 from the terminal. However, it fails to find the /usr/local/bin directory, even though it is in my path.</p>
<pre><code> $ ln -s /D/ProgramsD... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,865 | bash | # Why is bash failing to create a symbolic link in /usr/local/bin?
Attempting to create a symbolic link for the subl command so that I can open flies in Sublime Test 3 from the terminal. However, it fails to find the /usr/local/bin directory, even though it is in my path.
```
$ ln -s /D/ProgramsD/SublimeText3/subl /... | > ln: failed to create symbolic link '/usr/local/bin/subl': No such file or directory
This error can happen when one of the parent directories of `/usr/local/bin/subl` don't exist.
Create them with:
```
mkdir -p /usr/local/bin
```
> However, it fails to find the `/usr/local/bin` directory, even though it is in my p... |
45881232 | Base64 coreutils encoding padding (trailing "=" characters) | 10 | 2017-08-25 12:16:21 | <p>If I base64 encode a string which consists of seven characters e.g. <code>abcdefg</code> with the website <a href="https://www.base64encode.org/" rel="noreferrer">https://www.base64encode.org/</a> the result is <code>YWJjZGVmZw==</code>. The trailing "==" characters are padding because the number of input characters... | 4,866 | 2,948,561 | 2022-03-15 17:36:36 | 45,881,258 | 16 | 2017-08-25 12:17:46 | 2,948,561 | 2017-08-25 12:17:46 | https://stackoverflow.com/q/45881232 | https://stackoverflow.com/a/45881258 | <p>I've just noticed that the reason for the described behaviour is the newline which <code>echo</code> writes at the end. So the correct command is the following which suppress the newline</p>
<pre><code>echo -n "abcdefg" | base64
</code></pre>
<p>Then the output is like I expect it:</p>
<pre><code>YWJjZGVmZw==
</c... | <p>I've just noticed that the reason for the described behaviour is the newline which <code>echo</code> writes at the end. So the correct command is the following which suppress the newline</p> <pre><code>echo -n "abcdefg" | base64 </code></pre> <p>Then the output is like I expect it:</p> <pre><code>YWJjZGVmZw== </c... | 387, 1011 | base64, bash | <h1>Base64 coreutils encoding padding (trailing "=" characters)</h1>
<p>If I base64 encode a string which consists of seven characters e.g. <code>abcdefg</code> with the website <a href="https://www.base64encode.org/" rel="noreferrer">https://www.base64encode.org/</a> the result is <code>YWJjZGVmZw==</code>. The traili... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,866 | bash | # Base64 coreutils encoding padding (trailing "=" characters)
If I base64 encode a string which consists of seven characters e.g. `abcdefg` with the website <https://www.base64encode.org/> the result is `YWJjZGVmZw==`. The trailing "==" characters are padding because the number of input characters cannot be divided by... | I've just noticed that the reason for the described behaviour is the newline which `echo` writes at the end. So the correct command is the following which suppress the newline
```
echo -n "abcdefg" | base64
```
Then the output is like I expect it:
```
YWJjZGVmZw==
``` |
45147904 | How do I terminate GNU parallel without killing running jobs? | 10 | 2017-07-17 15:18:08 | <p>I'm running a bunch of shell scripts like
<code>parallel -a my_scripts bash</code>
and at some point I decided I've run enough of them and would like to stop spawning new jobs, and simply let all the existing jobs finish. Put another way, I want to kill the parent process without killing the children.</p>
<p>There ... | 6,020 | 4,115,369 | 2022-10-10 09:42:22 | 45,155,136 | 16 | 2017-07-17 23:25:43 | 4,115,369 | 2022-10-10 09:42:22 | https://stackoverflow.com/q/45147904 | https://stackoverflow.com/a/45155136 | <h2>Update:</h2>
<p>If you have a new version of parallel <code>>= 20190322</code>: as per @Bowi's comment, "since 2019, it is no longer <code>SIGTERM</code>, it's <code>SIGHUP</code> instead:</p>
<pre><code>kill -HUP $PARALLEL_PID
</code></pre>
<p><code>SIGTERM</code> now terminates the children without lettin... | <h2>Update:</h2> <p>If you have a new version of parallel <code>>= 20190322</code>: as per @Bowi's comment, "since 2019, it is no longer <code>SIGTERM</code>, it's <code>SIGHUP</code> instead:</p> <pre><code>kill -HUP $PARALLEL_PID </code></pre> <p><code>SIGTERM</code> now terminates the children without lettin... | 58, 353, 387, 5910, 82247 | bash, gnu-parallel, linux, parallel-processing, process | <h1>How do I terminate GNU parallel without killing running jobs?</h1>
<p>I'm running a bunch of shell scripts like
<code>parallel -a my_scripts bash</code>
and at some point I decided I've run enough of them and would like to stop spawning new jobs, and simply let all the existing jobs finish. Put another way, I want ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,867 | bash | # How do I terminate GNU parallel without killing running jobs?
I'm running a bunch of shell scripts like
`parallel -a my_scripts bash`
and at some point I decided I've run enough of them and would like to stop spawning new jobs, and simply let all the existing jobs finish. Put another way, I want to kill the parent p... | ## Update:
If you have a new version of parallel `>= 20190322`: as per @Bowi's comment, "since 2019, it is no longer `SIGTERM`, it's `SIGHUP` instead:
```
kill -HUP $PARALLEL_PID
```
`SIGTERM` now terminates the children without letting them finish."
See:
- <https://superuser.com/questions/1660301/gnu-parallel-is-... |
41721847 | readarray -t option in bash default behavior? | 10 | 2017-01-18 14:20:44 | <p>From <code>man bash</code> on <code>readarray</code>:</p>
<blockquote>
<p>-t<br>
Remove any trailing newline from a line read, before it is assigned to an array element.</p>
</blockquote>
<p>Is -t default behavior for readarray in bash?</p>
<p>I tested it couple of times with -t and without on a file with new... | 13,693 | 3,470,556 | 2017-01-18 14:45:22 | 41,722,162 | 16 | 2017-01-18 14:36:02 | 1,126,841 | 2017-01-18 14:36:02 | https://stackoverflow.com/q/41721847 | https://stackoverflow.com/a/41722162 | <p>There is indeed a difference:</p>
<pre><code># Newlines are retained as part each array element
$ readarray foo <<EOF
> foo
> bar
> baz
> EOF
$ printf '%s' "${foo[@]}"
foo
bar
baz
# Newlines are stripped
$ readarray -t foo <<EOF
foo
bar
baz
EOF
$ printf '%s' "${foo[@]}"
foobarbaz
</code></... | <p>There is indeed a difference:</p> <pre><code># Newlines are retained as part each array element $ readarray foo <<EOF > foo > bar > baz > EOF $ printf '%s' "${foo[@]}" foo bar baz # Newlines are stripped $ readarray -t foo <<EOF foo bar baz EOF $ printf '%s' "${foo[@]}" foobarbaz </code></... | 114, 387 | arrays, bash | <h1>readarray -t option in bash default behavior?</h1>
<p>From <code>man bash</code> on <code>readarray</code>:</p>
<blockquote>
<p>-t<br>
Remove any trailing newline from a line read, before it is assigned to an array element.</p>
</blockquote>
<p>Is -t default behavior for readarray in bash?</p>
<p>I tested it... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,868 | bash | # readarray -t option in bash default behavior?
From `man bash` on `readarray`:
> -t
> Remove any trailing newline from a line read, before it is assigned to an array element.
Is -t default behavior for readarray in bash?
I tested it couple of times with -t and without on a file with newlines
no difference notice... | There is indeed a difference:
```
# Newlines are retained as part each array element
$ readarray foo <<EOF
> foo
> bar
> baz
> EOF
$ printf '%s' "${foo[@]}"
foo
bar
baz
# Newlines are stripped
$ readarray -t foo <<EOF
foo
bar
baz
EOF
$ printf '%s' "${foo[@]}"
foobarbaz
```
The format to `printf` does not include a ... |
41194602 | Docker disconnect all containers from docker network | 10 | 2016-12-17 01:41:52 | <p>I have docker network "my_network". I want to remove this docker network with <code>docker network rm my_network</code>. Before it I should disconnect all my containers from this network. I can use <code>docker network inspect</code> and get output like</p>
<pre><code>[
{
"Name": "my_network",
... | 10,839 | 3,545,745 | 2017-05-09 18:44:56 | 41,194,696 | 16 | 2016-12-17 02:01:10 | 6,309 | 2017-05-09 18:44:56 | https://stackoverflow.com/q/41194602 | https://stackoverflow.com/a/41194696 | <p><a href="https://docs.docker.com/engine/reference/commandline/network_inspect/" rel="noreferrer"><code>docker network inspect</code></a> has a <a href="http://docs.master.dockerproject.org/engine/admin/formatting/" rel="noreferrer">format option</a>.</p>
<p>That means you can list all Container names with:</p>
<pr... | <p><a href="https://docs.docker.com/engine/reference/commandline/network_inspect/" rel="noreferrer"><code>docker network inspect</code></a> has a <a href="http://docs.master.dockerproject.org/engine/admin/formatting/" rel="noreferrer">format option</a>.</p> <p>That means you can list all Container names with:</p> <pr... | 387, 90304, 126320 | bash, docker, docker-network | <h1>Docker disconnect all containers from docker network</h1>
<p>I have docker network "my_network". I want to remove this docker network with <code>docker network rm my_network</code>. Before it I should disconnect all my containers from this network. I can use <code>docker network inspect</code> and get output like<... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,869 | bash | # Docker disconnect all containers from docker network
I have docker network "my_network". I want to remove this docker network with `docker network rm my_network`. Before it I should disconnect all my containers from this network. I can use `docker network inspect` and get output like
```
[
{
"Name": "my... | [`docker network inspect`](https://docs.docker.com/engine/reference/commandline/network_inspect/) has a [format option](http://docs.master.dockerproject.org/engine/admin/formatting/).
That means you can list all Container names with:
```
docker network inspect -f '{{range .Containers}}{{.Name}}{{end}}' network_name
`... |
33713088 | Convert apache log date format to epoch in bash | 10 | 2015-11-14 20:39:14 | <p>My goal is to convert dates from my apache logs in the format <em>"12/Nov/2015:23:28:22"</em> to epoch format. Can this be done using the date command or do I need to parse and extract the information?</p>
| 4,122 | 2,704,766 | 2018-05-29 18:24:20 | 33,713,297 | 16 | 2015-11-14 20:57:59 | 4,687,135 | 2015-11-14 20:57:59 | https://stackoverflow.com/q/33713088 | https://stackoverflow.com/a/33713297 | <p>It seems my <code>date</code> command wants <code>-</code> instead of <code>/</code> between the date parts and that to be separated by a space from the time part. So I used <code>sed</code> to do the conversion like so:</p>
<pre><code>date -d "$(echo '12/Nov/2015:23:28:22' | sed -e 's,/,-,g' -e 's,:, ,')" +"%s"
<... | <p>It seems my <code>date</code> command wants <code>-</code> instead of <code>/</code> between the date parts and that to be separated by a space from the time part. So I used <code>sed</code> to do the conversion like so:</p> <pre><code>date -d "$(echo '12/Nov/2015:23:28:22' | sed -e 's,/,-,g' -e 's,:, ,')" +"%s" <... | 58, 387, 390, 106673 | bash, centos7, linux, shell | <h1>Convert apache log date format to epoch in bash</h1>
<p>My goal is to convert dates from my apache logs in the format <em>"12/Nov/2015:23:28:22"</em> to epoch format. Can this be done using the date command or do I need to parse and extract the information?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,870 | bash | # Convert apache log date format to epoch in bash
My goal is to convert dates from my apache logs in the format *"12/Nov/2015:23:28:22"* to epoch format. Can this be done using the date command or do I need to parse and extract the information? | It seems my `date` command wants `-` instead of `/` between the date parts and that to be separated by a space from the time part. So I used `sed` to do the conversion like so:
```
date -d "$(echo '12/Nov/2015:23:28:22' | sed -e 's,/,-,g' -e 's,:, ,')" +"%s"
``` |
31524786 | How can I call many URLs from a list asynchronously | 10 | 2015-07-20 19:28:31 | <p>I have a few hundred thousand URLs that I need to call. These are calls to an application server which will process them and write a status code to a table. I do not need to wait for a response (success/fail), only that the server got the request. I also want to be able to specify how many concurrent jobs can be run... | 16,648 | 2,430,498 | 2019-05-07 19:53:53 | 31,525,044 | 16 | 2015-07-20 19:43:57 | 712,649 | 2015-07-20 19:43:57 | https://stackoverflow.com/q/31524786 | https://stackoverflow.com/a/31525044 | <p>With Jobs you incur a large amount of overhead, because each new Job spawns a new process.</p>
<p>Use <a href="https://serverfault.com/questions/626711/how-do-i-run-my-powershell-scripts-in-parallel-without-using-jobs/626712#626712">Runspaces</a> instead!</p>
<pre><code>$maxConcurrentJobs = 10
$content = Get-Conte... | <p>With Jobs you incur a large amount of overhead, because each new Job spawns a new process.</p> <p>Use <a href="https://serverfault.com/questions/626711/how-do-i-run-my-powershell-scripts-in-parallel-without-using-jobs/626712#626712">Runspaces</a> instead!</p> <pre><code>$maxConcurrentJobs = 10 $content = Get-Conte... | 526, 24067, 43392 | powershell, powershell-2.0, start-job | <h1>How can I call many URLs from a list asynchronously</h1>
<p>I have a few hundred thousand URLs that I need to call. These are calls to an application server which will process them and write a status code to a table. I do not need to wait for a response (success/fail), only that the server got the request. I also w... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,871 | bash | # How can I call many URLs from a list asynchronously
I have a few hundred thousand URLs that I need to call. These are calls to an application server which will process them and write a status code to a table. I do not need to wait for a response (success/fail), only that the server got the request. I also want to be... | With Jobs you incur a large amount of overhead, because each new Job spawns a new process.
Use [Runspaces](https://serverfault.com/questions/626711/how-do-i-run-my-powershell-scripts-in-parallel-without-using-jobs/626712#626712) instead!
```
$maxConcurrentJobs = 10
$content = Get-Content -Path "C:\Temp\urls.txt"
# C... |
27257333 | How do I escape curly braces {...} in powershell? | 10 | 2014-12-02 19:26:24 | <p>I need to generate multiple lines of xml tag with a GUID in them:</p>
<pre><code><xmltag_10 value="{ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ}"/>
<xmltag_11 value="{ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ}"/>
</code></pre>
<p>and so on</p>
<p>I have this line in a loop where $guid is generated each iteration,... | 19,318 | 1,108,510 | 2019-08-23 19:33:02 | 27,257,380 | 16 | 2014-12-02 19:29:26 | 3,905,079 | 2019-08-23 19:32:30 | https://stackoverflow.com/q/27257333 | https://stackoverflow.com/a/27257380 | <p>To escape curly braces, simply double them:</p>
<pre><code>'{0}, {{1}}, {{{2}}}' -f 'zero', 'one', 'two'
# outputs:
# zero, {1}, {two}
# i.e.
# - {0} is replaced by zero because of normal substitution rules
# - {{1}} is not replaced, as we've escaped/doubled the brackets
# - {2} is replaced by two, but the doubl... | <p>To escape curly braces, simply double them:</p> <pre><code>'{0}, {{1}}, {{{2}}}' -f 'zero', 'one', 'two' # outputs: # zero, {1}, {two} # i.e. # - {0} is replaced by zero because of normal substitution rules # - {{1}} is not replaced, as we've escaped/doubled the brackets # - {2} is replaced by two, but the doubl... | 526, 3567, 4804 | escaping, guid, powershell | <h1>How do I escape curly braces {...} in powershell?</h1>
<p>I need to generate multiple lines of xml tag with a GUID in them:</p>
<pre><code><xmltag_10 value="{ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ}"/>
<xmltag_11 value="{ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ}"/>
</code></pre>
<p>and so on</p>
<p>I have t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,872 | bash | # How do I escape curly braces {...} in powershell?
I need to generate multiple lines of xml tag with a GUID in them:
```
<xmltag_10 value="{ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ}"/>
<xmltag_11 value="{ZZZZZZZZ-ZZZZ-ZZZZ-ZZZZ-ZZZZZZZZZZZZ}"/>
```
and so on
I have this line in a loop where $guid is generated each ite... | To escape curly braces, simply double them:
```
'{0}, {{1}}, {{{2}}}' -f 'zero', 'one', 'two'
# outputs:
# zero, {1}, {two}
# i.e.
# - {0} is replaced by zero because of normal substitution rules
# - {{1}} is not replaced, as we've escaped/doubled the brackets
# - {2} is replaced by two, but the doubled brackets su... |
26619272 | Permission denied when i try to execute a python script from bash? | 10 | 2014-10-28 22:00:55 | <p>I downloaded a python script from the web and when i try to execute it from bash it throws a exception: </p>
<p><code>User:python_script user$ ./python_script.py -n some_parameter -b</code> </p>
<p>The output is the following:</p>
<pre><code>-bash: ./python_script.py: Permission denied
</code></pre>
<p>the file ... | 36,610 | 4,140,027 | 2014-10-28 22:03:18 | 26,619,301 | 16 | 2014-10-28 22:03:18 | 367,273 | 2014-10-28 22:03:18 | https://stackoverflow.com/q/26619272 | https://stackoverflow.com/a/26619301 | <p>You need to add execute permissions like so:</p>
<pre><code>chmod u+x python_script.py
</code></pre>
<p>This assumes that the script is owned by you. If it isn't, you might need to change the group/other execute permissions or <code>chown</code> the file as appropriate.</p>
| <p>You need to add execute permissions like so:</p> <pre><code>chmod u+x python_script.py </code></pre> <p>This assumes that the script is owned by you. If it isn't, you might need to change the group/other execute permissions or <code>chown</code> the file as appropriate.</p> | 16, 387, 390, 59047 | bash, python, python-2.7, shell | <h1>Permission denied when i try to execute a python script from bash?</h1>
<p>I downloaded a python script from the web and when i try to execute it from bash it throws a exception: </p>
<p><code>User:python_script user$ ./python_script.py -n some_parameter -b</code> </p>
<p>The output is the following:</p>
<pre><c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,873 | bash | # Permission denied when i try to execute a python script from bash?
I downloaded a python script from the web and when i try to execute it from bash it throws a exception:
`User:python_script user$ ./python_script.py -n some_parameter -b`
The output is the following:
```
-bash: ./python_script.py: Permission denie... | You need to add execute permissions like so:
```
chmod u+x python_script.py
```
This assumes that the script is owned by you. If it isn't, you might need to change the group/other execute permissions or `chown` the file as appropriate. |
22296839 | need a shell script to convert big endian to little endian | 10 | 2014-03-10 09:52:47 | <p>I need a shell script program to print the hexadecimal number from big endian to little endian</p>
<h3>For example</h3>
<ul>
<li>Input: <code>my virtual address = 00d66d7e</code></li>
<li>Output: <code>7e6dd600</code></li>
</ul>
<p>How can I can I create this in a bash script?</p>
| 23,825 | 2,431,159 | 2023-01-03 02:47:18 | 22,297,123 | 16 | 2014-03-10 10:05:49 | 650,405 | 2014-03-10 10:05:49 | https://stackoverflow.com/q/22296839 | https://stackoverflow.com/a/22297123 | <p>For 32 bit addresses, assuming it's zero padded:</p>
<pre><code>v=00d66d7e
echo ${v:6:2}${v:4:2}${v:2:2}${v:0:2}
# 7e6dd600
</code></pre>
| <p>For 32 bit addresses, assuming it's zero padded:</p> <pre><code>v=00d66d7e echo ${v:6:2}${v:4:2}${v:2:2}${v:0:2} # 7e6dd600 </code></pre> | 387, 390, 11692 | bash, endianness, shell | <h1>need a shell script to convert big endian to little endian</h1>
<p>I need a shell script program to print the hexadecimal number from big endian to little endian</p>
<h3>For example</h3>
<ul>
<li>Input: <code>my virtual address = 00d66d7e</code></li>
<li>Output: <code>7e6dd600</code></li>
</ul>
<p>How can I can I c... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,874 | bash | # need a shell script to convert big endian to little endian
I need a shell script program to print the hexadecimal number from big endian to little endian
### For example
- Input: `my virtual address = 00d66d7e`
- Output: `7e6dd600`
How can I can I create this in a bash script? | For 32 bit addresses, assuming it's zero padded:
```
v=00d66d7e
echo ${v:6:2}${v:4:2}${v:2:2}${v:0:2}
# 7e6dd600
``` |
20629581 | awk substitute shell variables | 10 | 2013-12-17 08:46:51 | <p>I am struggling with awk substitution, for some reason the following code does not substitute anything, it just prints the output unaltered. Can anyone see what I am missing here? Any help would be very much appreachiated! (PS! The $DOCPATH and $SITEPATH are shell variables, they work perfectly fine in my awk setup)... | 14,502 | 2,304,259 | 2014-03-30 09:42:20 | 20,629,779 | 16 | 2013-12-17 08:58:33 | 2,235,132 | 2013-12-17 08:58:33 | https://stackoverflow.com/q/20629581 | https://stackoverflow.com/a/20629779 | <p>Saying:</p>
<pre><code>sub( /docpath/, sitepath )
</code></pre>
<p>causes <code>awk</code> to replace the pattern <code>docpath</code>, not the variable <code>docpath</code>.</p>
<p>You need to say:</p>
<pre><code>awk -v docpath="$DOCPATH" -v sitepath="$SITEPATH" '{sub(docpath, sitepath)}1' filename
</code></pre... | <p>Saying:</p> <pre><code>sub( /docpath/, sitepath ) </code></pre> <p>causes <code>awk</code> to replace the pattern <code>docpath</code>, not the variable <code>docpath</code>.</p> <p>You need to say:</p> <pre><code>awk -v docpath="$DOCPATH" -v sitepath="$SITEPATH" '{sub(docpath, sitepath)}1' filename </code></pre... | 276, 387, 990, 16107 | awk, bash, substitution, variables | <h1>awk substitute shell variables</h1>
<p>I am struggling with awk substitution, for some reason the following code does not substitute anything, it just prints the output unaltered. Can anyone see what I am missing here? Any help would be very much appreachiated! (PS! The $DOCPATH and $SITEPATH are shell variables, t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,875 | bash | # awk substitute shell variables
I am struggling with awk substitution, for some reason the following code does not substitute anything, it just prints the output unaltered. Can anyone see what I am missing here? Any help would be very much appreachiated! (PS! The $DOCPATH and $SITEPATH are shell variables, they work ... | Saying:
```
sub( /docpath/, sitepath )
```
causes `awk` to replace the pattern `docpath`, not the variable `docpath`.
You need to say:
```
awk -v docpath="$DOCPATH" -v sitepath="$SITEPATH" '{sub(docpath, sitepath)}1' filename
``` |
19447352 | Using grep inside shell script gives file not found error | 10 | 2013-10-18 10:25:46 | <p>I cannot believe I've spent 1.5 hours on something as trivial as this. I'm writing a <strong>very</strong> simple shell script which greps a file, stores the output in a variable, and echos the variable to STDOUT.</p>
<p>I have checked the grep command with the regex on the command line, and it works fine. But for ... | 25,233 | 1,493,303 | 2013-10-18 10:38:51 | 19,447,478 | 16 | 2013-10-18 10:31:32 | 1,066,031 | 2013-10-18 10:38:51 | https://stackoverflow.com/q/19447352 | https://stackoverflow.com/a/19447478 | <p>You need to use command substitution:</p>
<pre><code>#!/usr/bin/env bash
test=$(grep 'foo' "$1")
echo "$test"
</code></pre>
<p>Command substitution allows the output of a command to replace the command itself. Command substitution occurs when a command is enclosed like this:</p>
<pre><code>$(command)
</code></pr... | <p>You need to use command substitution:</p> <pre><code>#!/usr/bin/env bash test=$(grep 'foo' "$1") echo "$test" </code></pre> <p>Command substitution allows the output of a command to replace the command itself. Command substitution occurs when a command is enclosed like this:</p> <pre><code>$(command) </code></pr... | 387, 390, 549, 1271 | bash, grep, shell, ubuntu | <h1>Using grep inside shell script gives file not found error</h1>
<p>I cannot believe I've spent 1.5 hours on something as trivial as this. I'm writing a <strong>very</strong> simple shell script which greps a file, stores the output in a variable, and echos the variable to STDOUT.</p>
<p>I have checked the grep comm... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,876 | bash | # Using grep inside shell script gives file not found error
I cannot believe I've spent 1.5 hours on something as trivial as this. I'm writing a **very** simple shell script which greps a file, stores the output in a variable, and echos the variable to STDOUT.
I have checked the grep command with the regex on the com... | You need to use command substitution:
```
#!/usr/bin/env bash
test=$(grep 'foo' "$1")
echo "$test"
```
Command substitution allows the output of a command to replace the command itself. Command substitution occurs when a command is enclosed like this:
```
$(command)
```
or like this using backticks:
```
`command`... |
15579739 | In an xterm, can I turn off bold or underline without resetting the current color? | 10 | 2013-03-22 20:58:33 | <p>I'm processing input (from sources like, but limited to, ls -la --color) and underlining certain sections of the text. I don't process these inputs character-by-character, but with lots of regular expressions, which makes it rather difficult to track whether the substring I'm affecting is already colored or in bold... | 6,413 | 30,997 | 2023-08-12 21:45:51 | 15,581,497 | 16 | 2013-03-22 23:34:33 | 30,997 | 2013-03-22 23:34:33 | https://stackoverflow.com/q/15579739 | https://stackoverflow.com/a/15581497 | <p>Nobody seems to document it, but adding 20 to the decorator codes will turn them off:</p>
<pre><code> echo -e "\\033[34;4m" underlined "\\033[24m" not underlined
echo -e "\\033[34;1m" bold "\\033[2m" not bold
echo -e "\\033[34;2m" dark "\\033[22m" not dark
echo -e "\\033[34;7m" inverse "\\033[27m" not invers... | <p>Nobody seems to document it, but adding 20 to the decorator codes will turn them off:</p> <pre><code> echo -e "\\033[34;4m" underlined "\\033[24m" not underlined echo -e "\\033[34;1m" bold "\\033[2m" not bold echo -e "\\033[34;2m" dark "\\033[22m" not dark echo -e "\\033[34;7m" inverse "\\033[27m" not invers... | 387, 555, 8737, 12066, 14323 | ansi-escape, bash, formatting, underline, xterm | <h1>In an xterm, can I turn off bold or underline without resetting the current color?</h1>
<p>I'm processing input (from sources like, but limited to, ls -la --color) and underlining certain sections of the text. I don't process these inputs character-by-character, but with lots of regular expressions, which makes it... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,877 | bash | # In an xterm, can I turn off bold or underline without resetting the current color?
I'm processing input (from sources like, but limited to, ls -la --color) and underlining certain sections of the text. I don't process these inputs character-by-character, but with lots of regular expressions, which makes it rather di... | Nobody seems to document it, but adding 20 to the decorator codes will turn them off:
```
echo -e "\\033[34;4m" underlined "\\033[24m" not underlined
echo -e "\\033[34;1m" bold "\\033[2m" not bold
echo -e "\\033[34;2m" dark "\\033[22m" not dark
echo -e "\\033[34;7m" inverse "\\033[27m" not inverse
``` |
15422757 | How to pass variables from a shell script to an expect script? | 10 | 2013-03-15 00:37:43 | <p>I've shell script as below:</p>
<pre><code>#!/bin/bash
echo "Select the Gateway Server:"
echo " 1. Gateway 1"
echo " 2. Gateway 2"
echo " 3. Gateway 3"
read gatewayHost
case $gatewayHost in
1) gateway="abc.com" ;;
2) gateway="pqr.com" ;;
3) gateway="xyz.com" ;;
*) echo "Invalid choice" ;;
e... | 28,207 | 1,914,541 | 2017-02-19 18:08:38 | 15,422,824 | 16 | 2013-03-15 00:45:02 | 459,745 | 2013-03-15 00:45:02 | https://stackoverflow.com/q/15422757 | https://stackoverflow.com/a/15422824 | <p>From your shell script:</p>
<pre><code>/mypath/abc $gateway
</code></pre>
<p>From your expect script:</p>
<pre><code>#!/usr/bin/expect
set gateway [lindex $argv 0]; # Grab the first command line parameter
set timeout 3
spawn ssh "james@$gateway"
expect "password:"
send "TSfdsHhtfs\r";
interact
</code></pre>
| <p>From your shell script:</p> <pre><code>/mypath/abc $gateway </code></pre> <p>From your expect script:</p> <pre><code>#!/usr/bin/expect set gateway [lindex $argv 0]; # Grab the first command line parameter set timeout 3 spawn ssh "james@$gateway" expect "password:" send "TSfdsHhtfs\r"; interact </code></pre> | 387, 390, 9048 | bash, expect, shell | <h1>How to pass variables from a shell script to an expect script?</h1>
<p>I've shell script as below:</p>
<pre><code>#!/bin/bash
echo "Select the Gateway Server:"
echo " 1. Gateway 1"
echo " 2. Gateway 2"
echo " 3. Gateway 3"
read gatewayHost
case $gatewayHost in
1) gateway="abc.com" ;;
2) gateway="p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,878 | bash | # How to pass variables from a shell script to an expect script?
I've shell script as below:
```
#!/bin/bash
echo "Select the Gateway Server:"
echo " 1. Gateway 1"
echo " 2. Gateway 2"
echo " 3. Gateway 3"
read gatewayHost
case $gatewayHost in
1) gateway="abc.com" ;;
2) gateway="pqr.com" ;;
3) ga... | From your shell script:
```
/mypath/abc $gateway
```
From your expect script:
```
#!/usr/bin/expect
set gateway [lindex $argv 0]; # Grab the first command line parameter
set timeout 3
spawn ssh "james@$gateway"
expect "password:"
send "TSfdsHhtfs\r";
interact
``` |
14602963 | Faster grep function for big (27GB) files | 10 | 2013-01-30 11:31:19 | <p>I have to grep from a file (5MB) containing specific strings the same strings (and other information) from a big file (27GB).
To speed up the analysis I split the 27GB file into 1GB files and then applied the following script (with the help of some people here). However it is not very efficient (to produce a 180KB ... | 14,286 | 1,216,241 | 2019-03-05 18:15:57 | 14,603,747 | 16 | 2013-01-30 12:13:22 | 7,412 | 2013-01-30 12:13:22 | https://stackoverflow.com/q/14602963 | https://stackoverflow.com/a/14603747 | <p>A few things you can try:</p>
<p>1) You are reading <code>input.sam</code> multiple times. It only needs to be read once before your first loop starts. Save the ids to a temporary file which will be read by <code>grep</code>.</p>
<p>2) Prefix your grep command with <code>LC_ALL=C</code> to use the C locale instead... | <p>A few things you can try:</p> <p>1) You are reading <code>input.sam</code> multiple times. It only needs to be read once before your first loop starts. Save the ids to a temporary file which will be read by <code>grep</code>.</p> <p>2) Prefix your grep command with <code>LC_ALL=C</code> to use the C locale instead... | 387, 990, 1271, 5310 | awk, bash, file, grep | <h1>Faster grep function for big (27GB) files</h1>
<p>I have to grep from a file (5MB) containing specific strings the same strings (and other information) from a big file (27GB).
To speed up the analysis I split the 27GB file into 1GB files and then applied the following script (with the help of some people here). Ho... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,879 | bash | # Faster grep function for big (27GB) files
I have to grep from a file (5MB) containing specific strings the same strings (and other information) from a big file (27GB).
To speed up the analysis I split the 27GB file into 1GB files and then applied the following script (with the help of some people here). However it i... | A few things you can try:
1) You are reading `input.sam` multiple times. It only needs to be read once before your first loop starts. Save the ids to a temporary file which will be read by `grep`.
2) Prefix your grep command with `LC_ALL=C` to use the C locale instead of UTF-8. This will speed up `grep`.
3) Use `fgr... |
14351991 | Get a subset of lines from a big text file using PowerShell v2 | 10 | 2013-01-16 05:36:26 | <p>I'm working with a big text file, I mean more than 100 MB big, and I need to loop through a specific number of lines, a kind of subset so I'm trying with this,</p>
<pre><code>$info = Get-Content -Path $TextFile | Select-Object -Index $from,$to
foreach ($line in $info)
{
,,,
</code></pre>
<p>But it does not wo... | 29,006 | 903,471 | 2016-07-18 03:28:33 | 14,353,603 | 16 | 2013-01-16 07:52:34 | 9,833 | 2013-01-16 07:52:34 | https://stackoverflow.com/q/14351991 | https://stackoverflow.com/a/14353603 | <pre><code>PS> help select -param index
-Index <Int32[]>
Selects objects from an array based on their index values. Enter the indexes in a comma-separated list.
Indexes in an array begin with 0, where 0 represents the first value and (n-1) represents the last value.
Required? ... | <pre><code>PS> help select -param index -Index <Int32[]> Selects objects from an array based on their index values. Enter the indexes in a comma-separated list. Indexes in an array begin with 0, where 0 represents the first value and (n-1) represents the last value. Required? ... | 526, 17938 | powershell, text-files | <h1>Get a subset of lines from a big text file using PowerShell v2</h1>
<p>I'm working with a big text file, I mean more than 100 MB big, and I need to loop through a specific number of lines, a kind of subset so I'm trying with this,</p>
<pre><code>$info = Get-Content -Path $TextFile | Select-Object -Index $from... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,880 | bash | # Get a subset of lines from a big text file using PowerShell v2
I'm working with a big text file, I mean more than 100 MB big, and I need to loop through a specific number of lines, a kind of subset so I'm trying with this,
```
$info = Get-Content -Path $TextFile | Select-Object -Index $from,$to
foreach ($line in $i... | ```
PS> help select -param index
-Index <Int32[]>
Selects objects from an array based on their index values. Enter the indexes in a comma-separated list.
Indexes in an array begin with 0, where 0 represents the first value and (n-1) represents the last value.
Required? false
Positi... |
12521647 | Getting TeamCity to recognize Powershell messages | 10 | 2012-09-20 22:10:45 | <p>How do I get TeamCity to output messages in the build log with Powershell?</p>
<p>I am using TeamCity 7.1.</p>
<p>Here is my Powershell Build Step:<img src="https://i.sstatic.net/z76Ld.png" alt="enter image description here"></p>
<p>The script is:</p>
<pre><code>write-host "##teamcity[message 'Getting production... | 7,290 | 257,975 | 2012-10-23 09:15:36 | 13,027,115 | 16 | 2012-10-23 09:15:36 | 1,039,742 | 2012-10-23 09:15:36 | https://stackoverflow.com/q/12521647 | https://stackoverflow.com/a/13027115 | <p>As described in <a href="http://confluence.jetbrains.net/display/TCD7/Build+Script+Interaction+with+TeamCity#BuildScriptInteractionwithTeamCity-ReportingMessagesForBuildLog">documentation</a> "message" service message can have multiple arguments, so you need to specify at least argument 'text': <code>"##teamcity[mes... | <p>As described in <a href="http://confluence.jetbrains.net/display/TCD7/Build+Script+Interaction+with+TeamCity#BuildScriptInteractionwithTeamCity-ReportingMessagesForBuildLog">documentation</a> "message" service message can have multiple arguments, so you need to specify at least argument 'text': <code>"##teamcity[mes... | 526, 76363 | powershell, teamcity-7.0 | <h1>Getting TeamCity to recognize Powershell messages</h1>
<p>How do I get TeamCity to output messages in the build log with Powershell?</p>
<p>I am using TeamCity 7.1.</p>
<p>Here is my Powershell Build Step:<img src="https://i.sstatic.net/z76Ld.png" alt="enter image description here"></p>
<p>The script is:</p>
<p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,881 | bash | # Getting TeamCity to recognize Powershell messages
How do I get TeamCity to output messages in the build log with Powershell?
I am using TeamCity 7.1.
Here is my Powershell Build Step:
The script is:
```
write-host "##teamcity[message 'Getting produc... | As described in [documentation](http://confluence.jetbrains.net/display/TCD7/Build+Script+Interaction+with+TeamCity#BuildScriptInteractionwithTeamCity-ReportingMessagesForBuildLog) "message" service message can have multiple arguments, so you need to specify at least argument 'text': `"##teamcity[message text='Getting ... |
12137908 | Running the Clean, Build and Rebuild through the Package Manager Console | 10 | 2012-08-27 07:36:08 | <p>I want to run the Clean, Build and Rebuild commands through the Package Manager Console in Visual Studio but so far I haven't been able to find how.</p>
<p>The following command gets me the first project inside the solution:</p>
<pre><code>$project = Get-Project | select -First 1
</code></pre>
<p>When I run the <... | 3,542 | 463,785 | 2012-08-27 12:38:53 | 12,142,141 | 16 | 2012-08-27 12:38:53 | 268,874 | 2012-08-27 12:38:53 | https://stackoverflow.com/q/12137908 | https://stackoverflow.com/a/12142141 | <p>Visual Studio's object model provides a way to build the entire solution or a single project via the <a href="http://msdn.microsoft.com/en-US/library/envdte.solutionbuild%28v=vs.100%29" rel="noreferrer">SolutionBuild</a> object.</p>
<p>Building the solution is straightforward from the NuGet Package Manager Console.... | <p>Visual Studio's object model provides a way to build the entire solution or a single project via the <a href="http://msdn.microsoft.com/en-US/library/envdte.solutionbuild%28v=vs.100%29" rel="noreferrer">SolutionBuild</a> object.</p> <p>Building the solution is straightforward from the NuGet Package Manager Console.... | 526, 33953, 62770 | nuget, powershell, visual-studio | <h1>Running the Clean, Build and Rebuild through the Package Manager Console</h1>
<p>I want to run the Clean, Build and Rebuild commands through the Package Manager Console in Visual Studio but so far I haven't been able to find how.</p>
<p>The following command gets me the first project inside the solution:</p>
<pre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,882 | bash | # Running the Clean, Build and Rebuild through the Package Manager Console
I want to run the Clean, Build and Rebuild commands through the Package Manager Console in Visual Studio but so far I haven't been able to find how.
The following command gets me the first project inside the solution:
```
$project = Get-Proje... | Visual Studio's object model provides a way to build the entire solution or a single project via the [SolutionBuild](http://msdn.microsoft.com/en-US/library/envdte.solutionbuild%28v=vs.100%29) object.
Building the solution is straightforward from the NuGet Package Manager Console.
```
$dte.Solution.SolutionBuild.Clea... |
11579008 | Writing to an excel sheet using Bash | 10 | 2012-07-20 12:03:57 | <p>Is it possible to write to an excel sheet(any type) from a bash script ?</p>
<p>What I am looking for is something along these lines :</p>
<pre><code>sed -e :a -e '$!N; s/\n/ /; ta' file.c > #( first coloumn ,second row of the spread sheet )
echo "$cdvar" > #( second coloumn ,third row of the spread sheet )... | 84,111 | 1,457,118 | 2021-12-13 02:25:01 | 11,590,073 | 16 | 2012-07-21 06:46:49 | 1,472,538 | 2021-12-13 02:25:01 | https://stackoverflow.com/q/11579008 | https://stackoverflow.com/a/11590073 | <p>You could write excel by <code>bash</code>, <code>perl</code>, <code>python</code>, .. I think that each program language has its solutions.</p>
<p><strong>bash</strong></p>
<p>You could use <code>join</code> or <code>awk</code>, and I think that there are other solutions.</p>
<p><em>join</em></p>
<p>If you want <co... | <p>You could write excel by <code>bash</code>, <code>perl</code>, <code>python</code>, .. I think that each program language has its solutions.</p> <p><strong>bash</strong></p> <p>You could use <code>join</code> or <code>awk</code>, and I think that there are other solutions.</p> <p><em>join</em></p> <p>If you want <co... | 387, 522, 990, 5282 | awk, bash, excel, sed | <h1>Writing to an excel sheet using Bash</h1>
<p>Is it possible to write to an excel sheet(any type) from a bash script ?</p>
<p>What I am looking for is something along these lines :</p>
<pre><code>sed -e :a -e '$!N; s/\n/ /; ta' file.c > #( first coloumn ,second row of the spread sheet )
echo "$cdvar" > #( s... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,883 | bash | # Writing to an excel sheet using Bash
Is it possible to write to an excel sheet(any type) from a bash script ?
What I am looking for is something along these lines :
```
sed -e :a -e '$!N; s/\n/ /; ta' file.c > #( first coloumn ,second row of the spread sheet )
echo "$cdvar" > #( second coloumn ,third row of the s... | You could write excel by `bash`, `perl`, `python`, .. I think that each program language has its solutions.
**bash**
You could use `join` or `awk`, and I think that there are other solutions.
*join*
If you want `join` to files with same column, look these posts: [Bash join command](https://stackoverflow.com/questio... |
11117493 | How to delete the rows that start with "C" with awk? | 10 | 2012-06-20 10:21:30 | <p>How can I delete the rows that start with "C" from a text file using <code>awk</code>?</p>
<p>Any suggestions please.</p>
| 8,360 | 1,460,569 | 2012-06-20 17:07:29 | 11,118,962 | 16 | 2012-06-20 11:54:06 | 1,209,279 | 2012-06-20 13:02:45 | https://stackoverflow.com/q/11117493 | https://stackoverflow.com/a/11118962 | <p>If data is in file <code>data.txt</code>, then</p>
<p>With <code>awk</code>:</p>
<pre><code>awk '!/^C/' data.txt
</code></pre>
<p>With <code>grep</code>:</p>
<pre><code>grep -v ^C data.txt
</code></pre>
<p>Display all lines without "C" at the start.</p>
<p><code>^C</code> means to match letter "C" at <em>star... | <p>If data is in file <code>data.txt</code>, then</p> <p>With <code>awk</code>:</p> <pre><code>awk '!/^C/' data.txt </code></pre> <p>With <code>grep</code>:</p> <pre><code>grep -v ^C data.txt </code></pre> <p>Display all lines without "C" at the start.</p> <p><code>^C</code> means to match letter "C" at <em>star... | 390, 990 | awk, shell | <h1>How to delete the rows that start with "C" with awk?</h1>
<p>How can I delete the rows that start with "C" from a text file using <code>awk</code>?</p>
<p>Any suggestions please.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,884 | bash | # How to delete the rows that start with "C" with awk?
How can I delete the rows that start with "C" from a text file using `awk`?
Any suggestions please. | If data is in file `data.txt`, then
With `awk`:
```
awk '!/^C/' data.txt
```
With `grep`:
```
grep -v ^C data.txt
```
Display all lines without "C" at the start.
`^C` means to match letter "C" at *start* of line. `!` in awk, and `-v` in grep negate the match. |
10671634 | Cakephp shell :Shell class HelloShell could not be found | 10 | 2012-05-20 07:36:16 | <p>I am a newer to cakephp .I config the cakephp shell as the cakephp
handbook says,when I run the HelloShell with the command cake
Hello ,I got the error information as follows:</p>
<pre><code>Error: Shell class HelloShell could not be found.
1#G:\htdocs\cakedemo\lib\Cake\Console\ShellDispatcher.php(191):ShellDispat... | 11,230 | 1,404,881 | 2016-03-24 10:39:31 | 10,672,041 | 16 | 2012-05-20 08:45:39 | 461,173 | 2014-06-16 09:38:57 | https://stackoverflow.com/q/10671634 | https://stackoverflow.com/a/10672041 | <p>there is your mistake.
you should always be in your APP path to execute the cake console.</p>
<pre><code>...app/>../lib/Cake/Console/cake MyShell
</code></pre>
<p>or (using the APP Console folder):</p>
<pre><code>...app/>Console/cake MyShell
</code></pre>
<p>and MyShell should then be in <code>...app/Conso... | <p>there is your mistake. you should always be in your APP path to execute the cake console.</p> <pre><code>...app/>../lib/Cake/Console/cake MyShell </code></pre> <p>or (using the APP Console folder):</p> <pre><code>...app/>Console/cake MyShell </code></pre> <p>and MyShell should then be in <code>...app/Conso... | 390, 3437 | cakephp, shell | <h1>Cakephp shell :Shell class HelloShell could not be found</h1>
<p>I am a newer to cakephp .I config the cakephp shell as the cakephp
handbook says,when I run the HelloShell with the command cake
Hello ,I got the error information as follows:</p>
<pre><code>Error: Shell class HelloShell could not be found.
1#G:\htd... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,885 | bash | # Cakephp shell :Shell class HelloShell could not be found
I am a newer to cakephp .I config the cakephp shell as the cakephp
handbook says,when I run the HelloShell with the command cake
Hello ,I got the error information as follows:
```
Error: Shell class HelloShell could not be found.
1#G:\htdocs\cakedemo\lib\Cake... | there is your mistake.
you should always be in your APP path to execute the cake console.
```
...app/>../lib/Cake/Console/cake MyShell
```
or (using the APP Console folder):
```
...app/>Console/cake MyShell
```
and MyShell should then be in `...app/Console/Command/`.
Thats all there is to it. |
9178685 | Change DataSource of SSRS Report with Powershell | 10 | 2012-02-07 15:11:44 | <p>I'm trying to ahange data sources of multiple SSRS Report with Powershell to one shared data source on my reporting server. Here my code:</p>
<pre><code>cls;
$reportserver = "myServer";<br/>
$url = "http://$($reportserver)/reportserver/reportservice2005.asmx?WSDL";";<br/>
$ssrs = New-WebServiceProxy -... | 27,438 | 1,194,945 | 2018-11-19 19:26:18 | 9,309,605 | 16 | 2012-02-16 10:28:21 | 1,194,945 | 2012-02-16 10:28:21 | https://stackoverflow.com/q/9178685 | https://stackoverflow.com/a/9309605 | <p>Thanks e82.eric!</p>
<p>you led me to the working solution. Here it is:</p>
<pre><code>cls;
#Set variables:
$reportserver = "myServer";
$newDataSourcePath = "/Data Sources/MyDS"
$newDataSourceName = "MyDS";
$reportFolderPath = "/DH"
#------------------------------------------------------------------------
$ssrs ... | <p>Thanks e82.eric!</p> <p>you led me to the working solution. Here it is:</p> <pre><code>cls; #Set variables: $reportserver = "myServer"; $newDataSourcePath = "/Data Sources/MyDS" $newDataSourceName = "MyDS"; $reportFolderPath = "/DH" #------------------------------------------------------------------------ $ssrs ... | 526, 3512, 25916 | datasource, powershell, reportingservices-2005 | <h1>Change DataSource of SSRS Report with Powershell</h1>
<p>I'm trying to ahange data sources of multiple SSRS Report with Powershell to one shared data source on my reporting server. Here my code:</p>
<pre><code>cls;
$reportserver = "myServer";<br/>
$url = "http://$($reportserver)/reportserver/reportservice2... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,886 | bash | # Change DataSource of SSRS Report with Powershell
I'm trying to ahange data sources of multiple SSRS Report with Powershell to one shared data source on my reporting server. Here my code:
```
cls;
$reportserver = "myServer";<br/>
$url = "http://$($reportserver)/reportserver/reportservice2005.asmx?WSDL";";<br/>
$ss... | Thanks e82.eric!
you led me to the working solution. Here it is:
```
cls;
#Set variables:
$reportserver = "myServer";
$newDataSourcePath = "/Data Sources/MyDS"
$newDataSourceName = "MyDS";
$reportFolderPath = "/DH"
#------------------------------------------------------------------------
$ssrs = New-WebServiceProxy... |
9052220 | Hash inside Makefile shell call causes unexpected behaviour | 10 | 2012-01-29 09:35:12 | <p>The following command prints the absolute path of a particular C++ header, according to where g++ believes it to be.</p>
<pre><code>echo \#include\<ham/hamsterdb.h\> | g++ -M -x c++-header - | grep hamsterdb.hpp | sed -e 's/-: //' -e 's/ \\//'
</code></pre>
<p>On my system, this outputs: <code>/usr/local/in... | 6,963 | 184,741 | 2023-11-10 17:37:07 | 9,052,257 | 16 | 2012-01-29 09:45:02 | 545,027 | 2012-01-29 09:51:53 | https://stackoverflow.com/q/9052220 | https://stackoverflow.com/a/9052257 | <p>You have to escape the hash twice in order to use it inside functions: once for Make and once again for the shell.</p>
<p>That is,</p>
<pre><code>FILE = $(shell echo \\\#include\ \<ham/hamsterdb.h\>)
</code></pre>
<p>Notice three backslashes instead of two as one could expect. The third backslash is needed ... | <p>You have to escape the hash twice in order to use it inside functions: once for Make and once again for the shell.</p> <p>That is,</p> <pre><code>FILE = $(shell echo \\\#include\ \<ham/hamsterdb.h\>) </code></pre> <p>Notice three backslashes instead of two as one could expect. The third backslash is needed ... | 390, 4301, 4747, 13824 | echo, g++, makefile, shell | <h1>Hash inside Makefile shell call causes unexpected behaviour</h1>
<p>The following command prints the absolute path of a particular C++ header, according to where g++ believes it to be.</p>
<pre><code>echo \#include\<ham/hamsterdb.h\> | g++ -M -x c++-header - | grep hamsterdb.hpp | sed -e 's/-: //' -e 's/ \\... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,887 | bash | # Hash inside Makefile shell call causes unexpected behaviour
The following command prints the absolute path of a particular C++ header, according to where g++ believes it to be.
```
echo \#include\<ham/hamsterdb.h\> | g++ -M -x c++-header - | grep hamsterdb.hpp | sed -e 's/-: //' -e 's/ \\//'
```
On my system, thi... | You have to escape the hash twice in order to use it inside functions: once for Make and once again for the shell.
That is,
```
FILE = $(shell echo \\\#include\ \<ham/hamsterdb.h\>)
```
Notice three backslashes instead of two as one could expect. The third backslash is needed because otherwise the first one would es... |
7872789 | Script repeat itself after X minutes | 10 | 2011-10-24 08:09:51 | <p>I have a bash script in Ubuntu, I want it to run every 10 minutes for example after it's done. How can I do this? Thanks!</p>
| 10,051 | 1,009,123 | 2017-11-22 09:06:57 | 7,873,066 | 16 | 2011-10-24 08:38:54 | 925,381 | 2011-10-24 08:38:54 | https://stackoverflow.com/q/7872789 | https://stackoverflow.com/a/7873066 | <p>You can check <code>watch</code>.<br>
From <a href="http://linux.die.net/man/1/watch">the man pages of <code>watch</code></a> the description says <code>watch - execute a program periodically, showing output fullscreen</code>, you can try <code>watch -n 600 my_script.sh</code> which will execute <code>myscript.sh</c... | <p>You can check <code>watch</code>.<br> From <a href="http://linux.die.net/man/1/watch">the man pages of <code>watch</code></a> the description says <code>watch - execute a program periodically, showing output fullscreen</code>, you can try <code>watch -n 600 my_script.sh</code> which will execute <code>myscript.sh</c... | 387, 2314 | bash, loops | <h1>Script repeat itself after X minutes</h1>
<p>I have a bash script in Ubuntu, I want it to run every 10 minutes for example after it's done. How can I do this? Thanks!</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,888 | bash | # Script repeat itself after X minutes
I have a bash script in Ubuntu, I want it to run every 10 minutes for example after it's done. How can I do this? Thanks! | You can check `watch`.
From [the man pages of `watch`](http://linux.die.net/man/1/watch) the description says `watch - execute a program periodically, showing output fullscreen`, you can try `watch -n 600 my_script.sh` which will execute `myscript.sh` every 600 seconds i.e. 10 minutes. `watch` shows the output to ful... |
5948717 | Calling shell command from ruby with proper argument escaping | 10 | 2011-05-10 10:33:22 | <p>I want to do the following securely</p>
<pre><code>system "echo '#{params[:message]}' > /dev/log"
</code></pre>
<p>What is the <strong>proper</strong> way for escaping arguments when calling a native command?</p>
<p>(Example evil input: <code>'; rm -Rf *; echo 'I won.</code>)</p>
| 1,965 | 163,454 | 2011-05-10 10:51:47 | 5,948,901 | 16 | 2011-05-10 10:51:47 | 24,195 | 2011-05-10 10:51:47 | https://stackoverflow.com/q/5948717 | https://stackoverflow.com/a/5948901 | <p>If you do</p>
<pre><code>system "echo", params[:message]
</code></pre>
<p>Then the second argument, will be sent as an argument, it will not be executed.</p>
| <p>If you do</p> <pre><code>system "echo", params[:message] </code></pre> <p>Then the second argument, will be sent as an argument, it will not be executed.</p> | 12, 390, 4804 | escaping, ruby, shell | <h1>Calling shell command from ruby with proper argument escaping</h1>
<p>I want to do the following securely</p>
<pre><code>system "echo '#{params[:message]}' > /dev/log"
</code></pre>
<p>What is the <strong>proper</strong> way for escaping arguments when calling a native command?</p>
<p>(Example evil input: <co... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,889 | bash | # Calling shell command from ruby with proper argument escaping
I want to do the following securely
```
system "echo '#{params[:message]}' > /dev/log"
```
What is the **proper** way for escaping arguments when calling a native command?
(Example evil input: `'; rm -Rf *; echo 'I won.`) | If you do
```
system "echo", params[:message]
```
Then the second argument, will be sent as an argument, it will not be executed. |
2753350 | How to make shell output redirect (>) write while script is still running? | 10 | 2010-05-02 11:50:45 | <p>I wrote a short script that never terminates. This script continuously generates output that I have to check on every now and then. I'm running it on a lab computer through SSH, and redirecting the output to a file in my public_html folder on that machine.</p>
<pre><code>python script.py > ~/public_html/results.... | 19,692 | 224,949 | 2010-05-02 12:40:00 | 2,753,361 | 16 | 2010-05-02 11:53:03 | 226,266 | 2010-05-02 11:53:03 | https://stackoverflow.com/q/2753350 | https://stackoverflow.com/a/2753361 | <p>You need to flush the output <code>sys.stdout.flush()</code> (or smth) if you want to see it immediately. See <a href="https://stackoverflow.com/questions/230751/how-to-flush-output-of-python-print">this</a></p>
| <p>You need to flush the output <code>sys.stdout.flush()</code> (or smth) if you want to see it immediately. See <a href="https://stackoverflow.com/questions/230751/how-to-flush-output-of-python-print">this</a></p> | 16, 58, 387, 390, 1231 | bash, command-line, linux, python, shell | <h1>How to make shell output redirect (>) write while script is still running?</h1>
<p>I wrote a short script that never terminates. This script continuously generates output that I have to check on every now and then. I'm running it on a lab computer through SSH, and redirecting the output to a file in my public_html ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,890 | bash | # How to make shell output redirect (>) write while script is still running?
I wrote a short script that never terminates. This script continuously generates output that I have to check on every now and then. I'm running it on a lab computer through SSH, and redirecting the output to a file in my public_html folder on... | You need to flush the output `sys.stdout.flush()` (or smth) if you want to see it immediately. See [this](https://stackoverflow.com/questions/230751/how-to-flush-output-of-python-print) |
1827561 | PowerShell: passing blocks as parameters to functions | 10 | 2009-12-01 17:04:51 | <p>I will explain my question on an example. Let's have following code in C#:</p>
<pre><code>void A(Action block)
{
B(() =>
{
Console.WriteLine(2);
block();
});
}
void B(Action block)
{
Console.WriteLine(1);
block();
}
void Main()
{
A(() =>
{
Console.WriteLine(3);
});
}
</code></pre>
<p>The outp... | 4,163 | 121,968 | 2015-04-16 00:17:02 | 1,827,658 | 16 | 2009-12-01 17:23:42 | 153,982 | 2009-12-01 17:23:42 | https://stackoverflow.com/q/1827561 | https://stackoverflow.com/a/1827658 | <p>Yeah, you're going recursive because the <code>$block</code> reference in the scriptblock passed into function B gets evaluated in the context of function B and as a result, evaluates to the value of B's <code>$block</code> parameter. </p>
<p>If you don't want to change the parameter name (don't blame you) you can... | <p>Yeah, you're going recursive because the <code>$block</code> reference in the scriptblock passed into function B gets evaluated in the context of function B and as a result, evaluates to the value of B's <code>$block</code> parameter. </p> <p>If you don't want to change the parameter name (don't blame you) you can... | 1, 9, 360, 526 | .net, c#, parameters, powershell | <h1>PowerShell: passing blocks as parameters to functions</h1>
<p>I will explain my question on an example. Let's have following code in C#:</p>
<pre><code>void A(Action block)
{
B(() =>
{
Console.WriteLine(2);
block();
});
}
void B(Action block)
{
Console.WriteLine(1);
block();
}
void Main()
{
A(() =&g... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,891 | bash | # PowerShell: passing blocks as parameters to functions
I will explain my question on an example. Let's have following code in C#:
```
void A(Action block)
{
B(() =>
{
Console.WriteLine(2);
block();
});
}
void B(Action block)
{
Console.WriteLine(1);
block();
}
void Main()
{
A(() =>
{
Console.WriteLine(... | Yeah, you're going recursive because the `$block` reference in the scriptblock passed into function B gets evaluated in the context of function B and as a result, evaluates to the value of B's `$block` parameter.
If you don't want to change the parameter name (don't blame you) you can force PowerShell to create a new ... |
722901 | Advice for Windows XP Scripting, WSH versus PowerShell | 10 | 2009-04-06 19:49:55 | <p>After much experience scripting in the Unix/Linux open-source world, using languages such as Bourne Shell, Perl, Python, and Ruby, I now find myself needing to do some Windows XP administration scripting. It appears that the legacy environment is Windows Script Host (WSH), which can use various scripting languages, ... | 8,887 | 87,420 | 2017-05-18 08:10:26 | 723,084 | 16 | 2009-04-06 20:27:47 | 4,035 | 2009-04-06 20:56:06 | https://stackoverflow.com/q/722901 | https://stackoverflow.com/a/723084 | <blockquote>
<p>Is it "worthwhile"?</p>
</blockquote>
<p>Absolutely. Here are number of reasons why.<br /></p>
<ol>
<li>More and more Microsoft products are based-on PowerShell - e.g. Exchange Server 2007, SQL Server 2008, etc.<br /></li>
<li>PowerShell can access Microsoft .NET.</li>
<li>Easy to learn - You only ... | <blockquote> <p>Is it "worthwhile"?</p> </blockquote> <p>Absolutely. Here are number of reasons why.<br /></p> <ol> <li>More and more Microsoft products are based-on PowerShell - e.g. Exchange Server 2007, SQL Server 2008, etc.<br /></li> <li>PowerShell can access Microsoft .NET.</li> <li>Easy to learn - You only ... | 494, 526, 531, 2216, 6701 | powershell, scripting, vbscript, windows-xp, wsh | <h1>Advice for Windows XP Scripting, WSH versus PowerShell</h1>
<p>After much experience scripting in the Unix/Linux open-source world, using languages such as Bourne Shell, Perl, Python, and Ruby, I now find myself needing to do some Windows XP administration scripting. It appears that the legacy environment is Window... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,892 | bash | # Advice for Windows XP Scripting, WSH versus PowerShell
After much experience scripting in the Unix/Linux open-source world, using languages such as Bourne Shell, Perl, Python, and Ruby, I now find myself needing to do some Windows XP administration scripting. It appears that the legacy environment is Windows Script ... | > Is it "worthwhile"?
Absolutely. Here are number of reasons why.
1. More and more Microsoft products are based-on PowerShell - e.g. Exchange Server 2007, SQL Server 2008, etc.
2. PowerShell can access Microsoft .NET.
3. Easy to learn - You only need few commands to explore capabilities of PowerShell - e.g.) Get-Comm... |
628617 | Moving All Files From Directories One Step Up | 10 | 2009-03-10 01:24:32 | <p>I have a directories that look like this</p>
<pre><code>fool@brat:/mydir/ucsc_mm8> tar -xvf *.tar
1/chr1.fa.masked
1/chr1_random.fa.masked
2/chr2.fa.masked
3/chr3.fa.masked
4/chr4.fa.masked
5/chr5.fa.masked
5/chr5_random.fa.masked
19/chr19.fa.masked
Un/chrUn_random.fa.masked
</code></pre>
<p>What I want to do ... | 8,729 | 67,405 | 2012-05-05 06:00:03 | 628,627 | 16 | 2009-03-10 01:32:54 | 74,493 | 2009-03-10 01:32:54 | https://stackoverflow.com/q/628617 | https://stackoverflow.com/a/628627 | <p>The typical way of moving files all files matching a particular expression is</p>
<pre><code>mv 1/*.masked targetDir
</code></pre>
<p>where targetDir could be .. </p>
<p>If you want to move it from directories 1,2,3 then you can do something like</p>
<pre><code>mv */*.masked targetDir
</code></pre>
<p>Or, if yo... | <p>The typical way of moving files all files matching a particular expression is</p> <pre><code>mv 1/*.masked targetDir </code></pre> <p>where targetDir could be .. </p> <p>If you want to move it from directories 1,2,3 then you can do something like</p> <pre><code>mv */*.masked targetDir </code></pre> <p>Or, if yo... | 34, 58, 387, 390, 12668 | bash, linux, mv, shell, unix | <h1>Moving All Files From Directories One Step Up</h1>
<p>I have a directories that look like this</p>
<pre><code>fool@brat:/mydir/ucsc_mm8> tar -xvf *.tar
1/chr1.fa.masked
1/chr1_random.fa.masked
2/chr2.fa.masked
3/chr3.fa.masked
4/chr4.fa.masked
5/chr5.fa.masked
5/chr5_random.fa.masked
19/chr19.fa.masked
Un/chrU... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,893 | bash | # Moving All Files From Directories One Step Up
I have a directories that look like this
```
fool@brat:/mydir/ucsc_mm8> tar -xvf *.tar
1/chr1.fa.masked
1/chr1_random.fa.masked
2/chr2.fa.masked
3/chr3.fa.masked
4/chr4.fa.masked
5/chr5.fa.masked
5/chr5_random.fa.masked
19/chr19.fa.masked
Un/chrUn_random.fa.masked
```
... | The typical way of moving files all files matching a particular expression is
```
mv 1/*.masked targetDir
```
where targetDir could be ..
If you want to move it from directories 1,2,3 then you can do something like
```
mv */*.masked targetDir
```
Or, if you want to specifically move it from numbered directories, y... |
70211581 | Disable a device without a confirmation - PowerShell | 9 | 2021-12-03 08:43:57 | <p>I'm working on a script that automates the process of disabling multiple Devices in Windows 10. This is my attempt:</p>
<pre><code>Get-PnpDevice something | Disable-PnpDevice
</code></pre>
<p>That code asks the user to enter <code>y</code> or <code>n</code> to confirm the process of disabling the device.</p>
<p>How ... | 8,084 | 16,330,115 | 2021-12-03 08:56:19 | 70,211,708 | 16 | 2021-12-03 08:56:19 | 14,638,694 | 2021-12-03 08:56:19 | https://stackoverflow.com/q/70211581 | https://stackoverflow.com/a/70211708 | <p>If the script uses PowerShell cmdlets, you can specify -<strong>Confirm:$false</strong> to suppress the prompt.</p>
<pre><code>Get-PnpDevice something | Disable-PnpDevice -Confirm:$false
</code></pre>
| <p>If the script uses PowerShell cmdlets, you can specify -<strong>Confirm:$false</strong> to suppress the prompt.</p> <pre><code>Get-PnpDevice something | Disable-PnpDevice -Confirm:$false </code></pre> | 64, 526 | powershell, windows | <h1>Disable a device without a confirmation - PowerShell</h1>
<p>I'm working on a script that automates the process of disabling multiple Devices in Windows 10. This is my attempt:</p>
<pre><code>Get-PnpDevice something | Disable-PnpDevice
</code></pre>
<p>That code asks the user to enter <code>y</code> or <code>n</cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,894 | bash | # Disable a device without a confirmation - PowerShell
I'm working on a script that automates the process of disabling multiple Devices in Windows 10. This is my attempt:
```
Get-PnpDevice something | Disable-PnpDevice
```
That code asks the user to enter `y` or `n` to confirm the process of disabling the device.
H... | If the script uses PowerShell cmdlets, you can specify -**Confirm:$false** to suppress the prompt.
```
Get-PnpDevice something | Disable-PnpDevice -Confirm:$false
``` |
56220620 | .NET tracing in PowerShell without creating .config file | 9 | 2019-05-20 12:01:15 | <p>I know I can enable <a href="https://learn.microsoft.com/en-us/dotnet/framework/debug-trace-profile/tracing-and-instrumenting-applications" rel="nofollow noreferrer">.NET tracing</a> by adding <a href="https://learn.microsoft.com/en-us/dotnet/framework/configure-apps/file-schema/trace-debug/system-diagnostics-elemen... | 2,597 | 850,848 | 2020-05-31 10:48:11 | 56,296,231 | 16 | 2019-05-24 16:13:12 | 909,199 | 2019-05-28 08:28:09 | https://stackoverflow.com/q/56220620 | https://stackoverflow.com/a/56296231 | <p>Just enabling the default trace sources (<code>Trace.Information</code> etc.) in code (and therefore in Powershell) is relatively easy.</p>
<p>Doing so for the <code>System.Net</code> trace sources is more complicated because they are not publicly accessible.</p>
<p>I have previously seen that in C#, calling a <co... | <p>Just enabling the default trace sources (<code>Trace.Information</code> etc.) in code (and therefore in Powershell) is relatively easy.</p> <p>Doing so for the <code>System.Net</code> trace sources is more complicated because they are not publicly accessible.</p> <p>I have previously seen that in C#, calling a <co... | 1, 526, 3107 | .net, app-config, powershell | <h1>.NET tracing in PowerShell without creating .config file</h1>
<p>I know I can enable <a href="https://learn.microsoft.com/en-us/dotnet/framework/debug-trace-profile/tracing-and-instrumenting-applications" rel="nofollow noreferrer">.NET tracing</a> by adding <a href="https://learn.microsoft.com/en-us/dotnet/framewor... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,895 | bash | # .NET tracing in PowerShell without creating .config file
I know I can enable [.NET tracing](https://learn.microsoft.com/en-us/dotnet/framework/debug-trace-profile/tracing-and-instrumenting-applications) by adding [`<system.diagnostics>` element](https://learn.microsoft.com/en-us/dotnet/framework/configure-apps/file-... | Just enabling the default trace sources (`Trace.Information` etc.) in code (and therefore in Powershell) is relatively easy.
Doing so for the `System.Net` trace sources is more complicated because they are not publicly accessible.
I have previously seen that in C#, calling a `System.Net` method e.g. `Dns.Resolve` was... |
54797475 | How to remove duplicate elements in an existing array in bash? | 9 | 2019-02-21 00:41:51 | <p>How do I create a newArray containing only the unique elements present in Array?</p>
<p>Ex: ARRAY contains elements <code>aa ab bb aa ab cc</code> at ARRAY[0-5] respectively.</p>
<p>When I print newARRAY, I want only <code>aa ab bb cc</code> at newARRAY[0-3] respectively.</p>
<p>I've searched stack overflow for a... | 15,270 | 11,087,586 | 2019-02-21 01:21:38 | 54,797,587 | 16 | 2019-02-21 00:53:47 | 3,030,305 | 2019-02-21 01:16:44 | https://stackoverflow.com/q/54797475 | https://stackoverflow.com/a/54797587 | <h3>Naive approach</h3>
<p>To get the unique elements of <code>arr</code> and assuming that no element contains newlines:</p>
<pre><code>$ printf "%s\n" "${arr[@]}" | sort -u
aa
ab
bb
cc
</code></pre>
<h3>Better approach</h3>
<p>To get a NUL-separated list that works even if there were newlines:</p>
<pre><code>$ p... | <h3>Naive approach</h3> <p>To get the unique elements of <code>arr</code> and assuming that no element contains newlines:</p> <pre><code>$ printf "%s\n" "${arr[@]}" | sort -u aa ab bb cc </code></pre> <h3>Better approach</h3> <p>To get a NUL-separated list that works even if there were newlines:</p> <pre><code>$ p... | 34, 387 | bash, unix | <h1>How to remove duplicate elements in an existing array in bash?</h1>
<p>How do I create a newArray containing only the unique elements present in Array?</p>
<p>Ex: ARRAY contains elements <code>aa ab bb aa ab cc</code> at ARRAY[0-5] respectively.</p>
<p>When I print newARRAY, I want only <code>aa ab bb cc</code> a... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,896 | bash | # How to remove duplicate elements in an existing array in bash?
How do I create a newArray containing only the unique elements present in Array?
Ex: ARRAY contains elements `aa ab bb aa ab cc` at ARRAY[0-5] respectively.
When I print newARRAY, I want only `aa ab bb cc` at newARRAY[0-3] respectively.
I've searched ... | ### Naive approach
To get the unique elements of `arr` and assuming that no element contains newlines:
```
$ printf "%s\n" "${arr[@]}" | sort -u
aa
ab
bb
cc
```
### Better approach
To get a NUL-separated list that works even if there were newlines:
```
$ printf "%s\0" "${arr[@]}" | sort -uz
aaabbbcc
```
(This, of... |
54041428 | How to list directory size of all child directories? | 9 | 2019-01-04 15:01:34 | <p>From the shell, I need to list the size of all child directories. I am currently using:</p>
<pre><code>du -hs * | sort -hr
</code></pre>
<p>However, this only gets one level down and does not traverse the directory tree.</p>
| 8,825 | 6,152,965 | 2019-01-04 15:28:06 | 54,041,662 | 16 | 2019-01-04 15:18:01 | 8,344,060 | 2019-01-04 15:27:29 | https://stackoverflow.com/q/54041428 | https://stackoverflow.com/a/54041662 | <p>The simplest is:</p>
<pre><code>du -h --max-depth=1 parent
</code></pre>
<p>This will show all sizes of the children of <code>parent</code> If you also want the grandchildren, you can do</p>
<pre><code>du -h --max-depth=2 parent
</code></pre>
<p>If you want the whole family</p>
<pre><code>du -h parent
</code></... | <p>The simplest is:</p> <pre><code>du -h --max-depth=1 parent </code></pre> <p>This will show all sizes of the children of <code>parent</code> If you also want the grandchildren, you can do</p> <pre><code>du -h --max-depth=2 parent </code></pre> <p>If you want the whole family</p> <pre><code>du -h parent </code></... | 58, 387, 390 | bash, linux, shell | <h1>How to list directory size of all child directories?</h1>
<p>From the shell, I need to list the size of all child directories. I am currently using:</p>
<pre><code>du -hs * | sort -hr
</code></pre>
<p>However, this only gets one level down and does not traverse the directory tree.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,897 | bash | # How to list directory size of all child directories?
From the shell, I need to list the size of all child directories. I am currently using:
```
du -hs * | sort -hr
```
However, this only gets one level down and does not traverse the directory tree. | The simplest is:
```
du -h --max-depth=1 parent
```
This will show all sizes of the children of `parent` If you also want the grandchildren, you can do
```
du -h --max-depth=2 parent
```
If you want the whole family
```
du -h parent
```
All these will just summarize the total directory size of each subdirectory u... |
51622424 | PowerShell: invoke-sqlcmd with Get-Credential doesn't work | 9 | 2018-07-31 21:34:03 | <p>I've never seen a so easy script failing so royally:</p>
<pre><code>$SQLServer = "localhost"
$cred = Get-Credential
invoke-sqlcmd -ServerInstance $SQLServer -Credential $cred -Query "select @@version"
</code></pre>
<p><a href="https://i.sstatic.net/6n4CI.png" rel="noreferrer"><img src="https://i.sstatic.net/6n4CI.... | 14,295 | 4,652,358 | 2018-07-31 23:33:58 | 51,623,386 | 16 | 2018-07-31 23:22:40 | 604,196 | 2018-07-31 23:33:58 | https://stackoverflow.com/q/51622424 | https://stackoverflow.com/a/51623386 | <p>The issue could be resulting from the fact that Microsoft has two versions of <code>Invoke-Sqlcmd</code>:</p>
<ol>
<li><a href="https://learn.microsoft.com/en-us/sql/database-engine/invoke-sqlcmd-cmdlet" rel="noreferrer">The Database Engine</a> - <strong>no</strong> <code>-Credentials</code> parameter.</li>
<li><a ... | <p>The issue could be resulting from the fact that Microsoft has two versions of <code>Invoke-Sqlcmd</code>:</p> <ol> <li><a href="https://learn.microsoft.com/en-us/sql/database-engine/invoke-sqlcmd-cmdlet" rel="noreferrer">The Database Engine</a> - <strong>no</strong> <code>-Credentials</code> parameter.</li> <li><a ... | 72, 526, 115585 | invoke-sqlcmd, powershell, sql-server | <h1>PowerShell: invoke-sqlcmd with Get-Credential doesn't work</h1>
<p>I've never seen a so easy script failing so royally:</p>
<pre><code>$SQLServer = "localhost"
$cred = Get-Credential
invoke-sqlcmd -ServerInstance $SQLServer -Credential $cred -Query "select @@version"
</code></pre>
<p><a href="https://i.sstatic.ne... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,898 | bash | # PowerShell: invoke-sqlcmd with Get-Credential doesn't work
I've never seen a so easy script failing so royally:
```
$SQLServer = "localhost"
$cred = Get-Credential
invoke-sqlcmd -ServerInstance $SQLServer -Credential $cred -Query "select @@version"
```
[ - **no** `-Credentials` parameter.
2. [The SqlServer module](https://learn.microsoft.com/en-us/powershell/module/sqlserver/... |
51471554 | Align columns in comma-separated file | 9 | 2018-07-23 04:25:35 | <p>I am writing the script in linux and the result of the script is a csv file. I want to format this file. My output file is:</p>
<pre><code>"T_Hours","T_Count","T_Hours","P_Avg_5","Diffrence_Between_P_Avg_5_and_T_Count"
"00","446","00","533","87"
"01","159","01","224","65"
"02","95","02","140","45"
"03","84","03","1... | 8,447 | 9,920,688 | 2019-05-15 15:05:30 | 51,471,616 | 16 | 2018-07-23 04:33:17 | 3,787,051 | 2019-05-15 15:05:30 | https://stackoverflow.com/q/51471554 | https://stackoverflow.com/a/51471616 | <p>Here's a portable way:</p>
<pre><code>sed 's/,/:,/g' output.csv |
column -t -s: |
sed 's/ ,/,/g'
</code></pre>
<p><strong>Explanation:</strong></p>
<p><code>column -t</code> aligns columns. The input separator can be specified with <code>-s</code> but the output separator is always a space (unless you have versio... | <p>Here's a portable way:</p> <pre><code>sed 's/,/:,/g' output.csv | column -t -s: | sed 's/ ,/,/g' </code></pre> <p><strong>Explanation:</strong></p> <p><code>column -t</code> aligns columns. The input separator can be specified with <code>-s</code> but the output separator is always a space (unless you have versio... | 387, 5282 | bash, sed | <h1>Align columns in comma-separated file</h1>
<p>I am writing the script in linux and the result of the script is a csv file. I want to format this file. My output file is:</p>
<pre><code>"T_Hours","T_Count","T_Hours","P_Avg_5","Diffrence_Between_P_Avg_5_and_T_Count"
"00","446","00","533","87"
"01","159","01","224","... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,899 | bash | # Align columns in comma-separated file
I am writing the script in linux and the result of the script is a csv file. I want to format this file. My output file is:
```
"T_Hours","T_Count","T_Hours","P_Avg_5","Diffrence_Between_P_Avg_5_and_T_Count"
"00","446","00","533","87"
"01","159","01","224","65"
"02","95","02","... | Here's a portable way:
```
sed 's/,/:,/g' output.csv |
column -t -s: |
sed 's/ ,/,/g'
```
**Explanation:**
`column -t` aligns columns. The input separator can be specified with `-s` but the output separator is always a space (unless you have version like *GNU* or *util-linux* supporting the `-o` flag, see [this answ... |
43941322 | dyld_insert_libraries ignored when calling application through bash | 9 | 2017-05-12 15:24:02 | <p>For my application, I am using DYLD_INSERT_LIBRARIES to switch libraries. I am running Mac OS X, El Capitan.</p>
<p>If I set these environment variables in my shell:</p>
<pre><code>export PYTHONHOME=${HOME}/anaconda
export DYLD_INSERT_LIBRARIES=${HOME}/anaconda/lib/libpython2.7.dylib:${HOME}/anaconda/lib/libmkl_r... | 3,094 | 104,910 | 2018-01-27 18:16:24 | 48,478,771 | 16 | 2018-01-27 17:55:12 | 986,902 | 2018-01-27 18:16:24 | https://stackoverflow.com/q/43941322 | https://stackoverflow.com/a/48478771 | <p>This is a security feature of recent macOS versions.</p>
<p>The system <code>bash</code> executable has been marked as "restricted", disabling the DYLD_* features. To work around this, you can make a copy of <code>bash</code> and use that instead.</p>
<p>By looking for the following details in the implementations ... | <p>This is a security feature of recent macOS versions.</p> <p>The system <code>bash</code> executable has been marked as "restricted", disabling the DYLD_* features. To work around this, you can make a copy of <code>bash</code> and use that instead.</p> <p>By looking for the following details in the implementations ... | 369, 387, 8952 | bash, macos, shared-libraries | <h1>dyld_insert_libraries ignored when calling application through bash</h1>
<p>For my application, I am using DYLD_INSERT_LIBRARIES to switch libraries. I am running Mac OS X, El Capitan.</p>
<p>If I set these environment variables in my shell:</p>
<pre><code>export PYTHONHOME=${HOME}/anaconda
export DYLD_INSERT_LI... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,900 | bash | # dyld_insert_libraries ignored when calling application through bash
For my application, I am using DYLD_INSERT_LIBRARIES to switch libraries. I am running Mac OS X, El Capitan.
If I set these environment variables in my shell:
```
export PYTHONHOME=${HOME}/anaconda
export DYLD_INSERT_LIBRARIES=${HOME}/anaconda/lib... | This is a security feature of recent macOS versions.
The system `bash` executable has been marked as "restricted", disabling the DYLD_* features. To work around this, you can make a copy of `bash` and use that instead.
By looking for the following details in the implementations of `dyld`, I see that this restriction ... |
46081687 | How to make "select" display the options in a single column? | 9 | 2017-09-06 18:04:22 | <p>I have a random situation, when I use multiple choice menu in bash and add more items to my list selection, the menu does no longer stack up line by line</p>
<pre><code>echo " [?] What would you like to do:"
echo
# End
opt=""
select recon in Enumeration General Web-Recon Services Msfvenom Other
do
opt="$re... | 4,692 | 7,778,016 | 2017-09-06 18:33:33 | 46,081,970 | 16 | 2017-09-06 18:24:12 | 3,776,858 | 2017-09-06 18:24:12 | https://stackoverflow.com/q/46081687 | https://stackoverflow.com/a/46081970 | <p>Use <code>COLUMNS=0</code> before your <code>select</code> command.</p>
<p>Tested with bash 4.2.8.</p>
| <p>Use <code>COLUMNS=0</code> before your <code>select</code> command.</p> <p>Tested with bash 4.2.8.</p> | 58, 387, 1151 | bash, linux, select | <h1>How to make "select" display the options in a single column?</h1>
<p>I have a random situation, when I use multiple choice menu in bash and add more items to my list selection, the menu does no longer stack up line by line</p>
<pre><code>echo " [?] What would you like to do:"
echo
# End
opt=""
select reco... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,901 | bash | # How to make "select" display the options in a single column?
I have a random situation, when I use multiple choice menu in bash and add more items to my list selection, the menu does no longer stack up line by line
```
echo " [?] What would you like to do:"
echo
# End
opt=""
select recon in Enumeration Gen... | Use `COLUMNS=0` before your `select` command.
Tested with bash 4.2.8. |
43789845 | How to detect if a Ruby script is running through a shell pipe? | 9 | 2017-05-04 18:02:39 | <p>My question is similar to this one: <a href="https://stackoverflow.com/questions/911168/how-to-detect-if-my-shell-script-is-running-through-a-pipe">How to detect if my shell script is running through a pipe?</a>. The difference is that the script I’m working on is written in Ruby.</p>
<p>Let’s say I run:</p>
<pre>... | 1,422 | 1,141,709 | 2020-05-09 03:28:25 | 43,791,242 | 16 | 2017-05-04 19:24:47 | 1,143,549 | 2017-05-04 21:03:37 | https://stackoverflow.com/q/43789845 | https://stackoverflow.com/a/43791242 | <p>Use <code>$stdout.isatty</code> or more idiomatically, <code>$stdout.tty?</code>. I created a little test.rb file to demonstrate, contents:</p>
<pre><code>puts $stdout.isatty
</code></pre>
<p>Results:</p>
<pre><code>$ ruby test.rb
true
$ ruby test.rb | cat
false
</code></pre>
<p>Reference: <a href="https://ruby... | <p>Use <code>$stdout.isatty</code> or more idiomatically, <code>$stdout.tty?</code>. I created a little test.rb file to demonstrate, contents:</p> <pre><code>puts $stdout.isatty </code></pre> <p>Results:</p> <pre><code>$ ruby test.rb true $ ruby test.rb | cat false </code></pre> <p>Reference: <a href="https://ruby... | 12, 390, 5813 | pipe, ruby, shell | <h1>How to detect if a Ruby script is running through a shell pipe?</h1>
<p>My question is similar to this one: <a href="https://stackoverflow.com/questions/911168/how-to-detect-if-my-shell-script-is-running-through-a-pipe">How to detect if my shell script is running through a pipe?</a>. The difference is that the scri... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,902 | bash | # How to detect if a Ruby script is running through a shell pipe?
My question is similar to this one: [How to detect if my shell script is running through a pipe?](https://stackoverflow.com/questions/911168/how-to-detect-if-my-shell-script-is-running-through-a-pipe). The difference is that the script I’m working on is... | Use `$stdout.isatty` or more idiomatically, `$stdout.tty?`. I created a little test.rb file to demonstrate, contents:
```
puts $stdout.isatty
```
Results:
```
$ ruby test.rb
true
$ ruby test.rb | cat
false
```
Reference: <https://ruby-doc.org/core/IO.html#method-i-isatty> |
41931855 | Why env does not print PS1 variable? | 9 | 2017-01-30 08:49:57 | <p>When we print the value of <code>PS1</code>, it is set:</p>
<pre><code>$ echo $PS1
[\u@\h \W]\$
</code></pre>
<p>We can use <code>env</code> command to print environment variables. Why does it not list <code>PS1</code> variable ?</p>
<pre><code>$ env | grep PS1
# No output here
</code></pre>
| 4,208 | 1,119,997 | 2017-01-30 09:31:40 | 41,932,102 | 16 | 2017-01-30 09:05:55 | null | 2017-01-30 09:28:15 | https://stackoverflow.com/q/41931855 | https://stackoverflow.com/a/41932102 | <p>Because PS1 is not (usually, and in your specific case) an environment variable.</p>
<p>There are many variables set in a bash instance which you can list with:</p>
<pre><code>$ set
BASH=/bin/bash
BASHOPTS=checkwinsize:cmdhist:…
BASH_ALIASES=()
BASH_ARGC=()
.
.
SHLVL=1
SSH_AGENT_PID=853
SSH_AUTH_SOCK=/tmp/ssh-Ofup... | <p>Because PS1 is not (usually, and in your specific case) an environment variable.</p> <p>There are many variables set in a bash instance which you can list with:</p> <pre><code>$ set BASH=/bin/bash BASHOPTS=checkwinsize:cmdhist:… BASH_ALIASES=() BASH_ARGC=() . . SHLVL=1 SSH_AGENT_PID=853 SSH_AUTH_SOCK=/tmp/ssh-Ofup... | 58, 387, 9013 | bash, environment-variables, linux | <h1>Why env does not print PS1 variable?</h1>
<p>When we print the value of <code>PS1</code>, it is set:</p>
<pre><code>$ echo $PS1
[\u@\h \W]\$
</code></pre>
<p>We can use <code>env</code> command to print environment variables. Why does it not list <code>PS1</code> variable ?</p>
<pre><code>$ env | grep PS1
# No o... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,903 | bash | # Why env does not print PS1 variable?
When we print the value of `PS1`, it is set:
```
$ echo $PS1
[\u@\h \W]\$
```
We can use `env` command to print environment variables. Why does it not list `PS1` variable ?
```
$ env | grep PS1
# No output here
``` | Because PS1 is not (usually, and in your specific case) an environment variable.
There are many variables set in a bash instance which you can list with:
```
$ set
BASH=/bin/bash
BASHOPTS=checkwinsize:cmdhist:…
BASH_ALIASES=()
BASH_ARGC=()
.
.
SHLVL=1
SSH_AGENT_PID=853
SSH_AUTH_SOCK=/tmp/ssh-Ofupc03xWIs7/agent.795
TE... |
40402048 | Preserving hashtable order | 9 | 2016-11-03 12:54:01 | <p>Let's say I've this script :</p>
<pre><code>$data= @{
A = 1
C = 2
B = 3
}
foreach($key in $data.Keys){
$item = $data[$key]
Write-Host "$($key) : $($item)"
}
</code></pre>
<p>The output is:</p>
<pre><code>C : 2
B : 3
A : 1
</code></pre>
<p>As you can see, the output is in different order that... | 3,845 | 588,868 | 2016-11-03 12:58:22 | 40,402,084 | 16 | 2016-11-03 12:56:31 | 1,324,345 | 2016-11-03 12:56:31 | https://stackoverflow.com/q/40402048 | https://stackoverflow.com/a/40402084 | <p>Requires PowerShell 3, but you can use the <code>[ordered]</code> accelerator to keep things in order.</p>
<pre><code>$data= [ordered]@{
A = 1
C = 2
B = 3
}
</code></pre>
| <p>Requires PowerShell 3, but you can use the <code>[ordered]</code> accelerator to keep things in order.</p> <pre><code>$data= [ordered]@{ A = 1 C = 2 B = 3 } </code></pre> | 526 | powershell | <h1>Preserving hashtable order</h1>
<p>Let's say I've this script :</p>
<pre><code>$data= @{
A = 1
C = 2
B = 3
}
foreach($key in $data.Keys){
$item = $data[$key]
Write-Host "$($key) : $($item)"
}
</code></pre>
<p>The output is:</p>
<pre><code>C : 2
B : 3
A : 1
</code></pre>
<p>As you can see, t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,904 | bash | # Preserving hashtable order
Let's say I've this script :
```
$data= @{
A = 1
C = 2
B = 3
}
foreach($key in $data.Keys){
$item = $data[$key]
Write-Host "$($key) : $($item)"
}
```
The output is:
```
C : 2
B : 3
A : 1
```
As you can see, the output is in different order that the input.
Is there... | Requires PowerShell 3, but you can use the `[ordered]` accelerator to keep things in order.
```
$data= [ordered]@{
A = 1
C = 2
B = 3
}
``` |
39215064 | Insert into mysql from Bash script | 9 | 2016-08-29 20:56:01 | <p>Utilized a few posts here and Google and friends and I'm trying desperately to get something simple to work. I want to insert data into mysql via a bash script.</p>
<pre><code>#!/bin/bash -x
DB_USER='jhatter';
DB_PASSWD='XXXXXXX';
DB_NAME='ppr';
TABLE='graph';
#Collect Rank Information from flightaware.com
day=$(... | 57,371 | 6,771,850 | 2016-08-29 21:02:43 | 39,215,128 | 16 | 2016-08-29 21:00:27 | 641,955 | 2016-08-29 21:02:43 | https://stackoverflow.com/q/39215064 | https://stackoverflow.com/a/39215128 | <p>You can pass the commands in a <em>here-document</em>, like this:</p>
<pre><code>mysql --user=$DB_USER --password=$DB_PASSWD $DB_NAME << EOF
INSERT INTO $TABLE (\`id\`, \`day\`, \`time\`, \`rank\`) VALUES (NULL, "$day", "$time", "$rank");
EOF
</code></pre>
<p>Notice that the <code>`</code> need to be escaped... | <p>You can pass the commands in a <em>here-document</em>, like this:</p> <pre><code>mysql --user=$DB_USER --password=$DB_PASSWD $DB_NAME << EOF INSERT INTO $TABLE (\`id\`, \`day\`, \`time\`, \`rank\`) VALUES (NULL, "$day", "$time", "$rank"); EOF </code></pre> <p>Notice that the <code>`</code> need to be escaped... | 21, 387 | bash, mysql | <h1>Insert into mysql from Bash script</h1>
<p>Utilized a few posts here and Google and friends and I'm trying desperately to get something simple to work. I want to insert data into mysql via a bash script.</p>
<pre><code>#!/bin/bash -x
DB_USER='jhatter';
DB_PASSWD='XXXXXXX';
DB_NAME='ppr';
TABLE='graph';
#Collect ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,905 | bash | # Insert into mysql from Bash script
Utilized a few posts here and Google and friends and I'm trying desperately to get something simple to work. I want to insert data into mysql via a bash script.
```
#!/bin/bash -x
DB_USER='jhatter';
DB_PASSWD='XXXXXXX';
DB_NAME='ppr';
TABLE='graph';
#Collect Rank Information fro... | You can pass the commands in a *here-document*, like this:
```
mysql --user=$DB_USER --password=$DB_PASSWD $DB_NAME << EOF
INSERT INTO $TABLE (\`id\`, \`day\`, \`time\`, \`rank\`) VALUES (NULL, "$day", "$time", "$rank");
EOF
```
Notice that the `` ` `` need to be escaped.
I also removed the `QUIT` command,
as it's un... |
36128042 | Powershell error adding to an array | 9 | 2016-03-21 10:06:53 | <p>Hi I am trying to run a script to get users in a network into an array so that it can be outputted to a csv file along with other data that I am going to get, such as distribution groups. </p>
<p>The code script I am running is giving an error: </p>
<blockquote>
<p>Method invocation failed because [System.Manage... | 121,143 | 5,840,839 | 2025-12-02 10:29:56 | 36,128,262 | 16 | 2016-03-21 10:16:33 | 712,649 | 2025-12-02 10:29:56 | https://stackoverflow.com/q/36128042 | https://stackoverflow.com/a/36128262 | <p>Don't reuse the same variable name for the array, and the individual objects that you want to add to the array. Here I've renamed the <code>PSObject</code> variable to <code>$ActiveDirectoryObject</code>:</p>
<pre><code>$ActiveDirectoryList=@()
$UserDetails = get-aduser -filter {enabled -eq $true} -properties * | S... | <p>Don't reuse the same variable name for the array, and the individual objects that you want to add to the array. Here I've renamed the <code>PSObject</code> variable to <code>$ActiveDirectoryObject</code>:</p> <pre><code>$ActiveDirectoryList=@() $UserDetails = get-aduser -filter {enabled -eq $true} -properties * | S... | 526 | powershell | <h1>Powershell error adding to an array</h1>
<p>Hi I am trying to run a script to get users in a network into an array so that it can be outputted to a csv file along with other data that I am going to get, such as distribution groups. </p>
<p>The code script I am running is giving an error: </p>
<blockquote>
<p>Me... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,906 | bash | # Powershell error adding to an array
Hi I am trying to run a script to get users in a network into an array so that it can be outputted to a csv file along with other data that I am going to get, such as distribution groups.
The code script I am running is giving an error:
> Method invocation failed because [System... | Don't reuse the same variable name for the array, and the individual objects that you want to add to the array. Here I've renamed the `PSObject` variable to `$ActiveDirectoryObject`:
```
$ActiveDirectoryList=@()
$UserDetails = get-aduser -filter {enabled -eq $true} -properties * | Select DisplayName,EmailAddress, SAM... |
34092367 | Powershell script to count specific files in directories & subdirectories | 9 | 2015-12-04 16:00:04 | <p>I am trying to make a powershell script which will count all the .xml files in directories & subdirectories and list the value + path.</p>
<p>So far I have done the this:</p>
<pre><code>Get-ChildItem -Path c:/test -recurse -include *.xml
</code></pre>
<p>Which is close to what I want but without the actual fi... | 19,762 | 5,612,718 | 2015-12-09 14:40:14 | 34,092,507 | 16 | 2015-12-04 16:06:44 | 47,402 | 2015-12-09 14:40:14 | https://stackoverflow.com/q/34092367 | https://stackoverflow.com/a/34092507 | <pre><code>Get-ChildItem -Path c:/test -recurse -filter *.xml | Group-Object -Property Directory
</code></pre>
<p>And to get a nicer table, you could add <code>-NoElement</code> to <code>Group-Object</code>.</p>
<p>To exclude some directories, try:</p>
<pre><code>$excludedPaths = @("Windows", "Program Files", "Progr... | <pre><code>Get-ChildItem -Path c:/test -recurse -filter *.xml | Group-Object -Property Directory </code></pre> <p>And to get a nicer table, you could add <code>-NoElement</code> to <code>Group-Object</code>.</p> <p>To exclude some directories, try:</p> <pre><code>$excludedPaths = @("Windows", "Program Files", "Progr... | 526, 7989, 29006 | count, get-childitem, powershell | <h1>Powershell script to count specific files in directories & subdirectories</h1>
<p>I am trying to make a powershell script which will count all the .xml files in directories & subdirectories and list the value + path.</p>
<p>So far I have done the this:</p>
<pre><code>Get-ChildItem -Path c:/test -recurse -incl... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,907 | bash | # Powershell script to count specific files in directories & subdirectories
I am trying to make a powershell script which will count all the .xml files in directories & subdirectories and list the value + path.
So far I have done the this:
```
Get-ChildItem -Path c:/test -recurse -include *.xml
```
Which is close t... | ```
Get-ChildItem -Path c:/test -recurse -filter *.xml | Group-Object -Property Directory
```
And to get a nicer table, you could add `-NoElement` to `Group-Object`.
To exclude some directories, try:
```
$excludedPaths = @("Windows", "Program Files", "Program Files (x86)");
$searchPaths = Get-ChildItem -Path C:\ -Di... |
32341733 | Does piping ls to head stop it's execution half way? | 9 | 2015-09-01 22:16:44 | <p>If I run <code>ls folder | head</code> in a directory with a lot of files, the execution time is about 50 times faster than <code>ls folder | tail</code>. Does the <code>head</code> command stops <code>ls</code> from executing wholy when it has enough (10) lines?</p>
<p>I couldn't find the answer to this anywhere b... | 1,492 | 5,290,212 | 2015-09-01 22:26:24 | 32,341,793 | 16 | 2015-09-01 22:21:47 | 5,233,270 | 2015-09-01 22:24:02 | https://stackoverflow.com/q/32341733 | https://stackoverflow.com/a/32341793 | <p>Once <code>head</code> has read enough lines from it's <code>stdin</code> (<code>stdout</code> of <code>ls</code>), then it exits and therefore closes the <code>stdin</code>. When that happens, the pipe is considered to be broken and <code>ls</code> receives a <code>SIGPIPE</code> signal. As a reaction to that it te... | <p>Once <code>head</code> has read enough lines from it's <code>stdin</code> (<code>stdout</code> of <code>ls</code>), then it exits and therefore closes the <code>stdin</code>. When that happens, the pipe is considered to be broken and <code>ls</code> receives a <code>SIGPIPE</code> signal. As a reaction to that it te... | 58, 387, 5813 | bash, linux, pipe | <h1>Does piping ls to head stop it's execution half way?</h1>
<p>If I run <code>ls folder | head</code> in a directory with a lot of files, the execution time is about 50 times faster than <code>ls folder | tail</code>. Does the <code>head</code> command stops <code>ls</code> from executing wholy when it has enough (10... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,908 | bash | # Does piping ls to head stop it's execution half way?
If I run `ls folder | head` in a directory with a lot of files, the execution time is about 50 times faster than `ls folder | tail`. Does the `head` command stops `ls` from executing wholy when it has enough (10) lines?
I couldn't find the answer to this anywhere... | Once `head` has read enough lines from it's `stdin` (`stdout` of `ls`), then it exits and therefore closes the `stdin`. When that happens, the pipe is considered to be broken and `ls` receives a `SIGPIPE` signal. As a reaction to that it terminates as well, way before processing everything that it would normally do.
In... |
30033784 | bash + sed: trim trailing zeroes off a floating point number? | 9 | 2015-05-04 15:21:27 | <p>I'm trying to get trim off trailing decimal zeroes off a floating point number, but no luck so far.</p>
<pre><code>echo "3/2" | bc -l | sed s/0\{1,\}\$//
1.50000000000000000000
</code></pre>
<p>I was hoping to get <code>1.5</code> but somehow the trailing zeroes are not truncated. If instead of <code>0\{1,\}</code... | 8,092 | 3,914,111 | 2024-09-26 09:45:31 | 30,048,933 | 16 | 2015-05-05 09:20:46 | 2,885,763 | 2015-05-05 09:20:46 | https://stackoverflow.com/q/30033784 | https://stackoverflow.com/a/30048933 | <pre><code>echo "3/2" | bc -l | sed '/\./ s/\.\{0,1\}0\{1,\}$//'
</code></pre>
<ul>
<li>remove trailing 0 IF there is a decimal separator</li>
<li>remove the separator if there are only 0 after separator also (assuming there is at least a digit before like BC does)</li>
</ul>
| <pre><code>echo "3/2" | bc -l | sed '/\./ s/\.\{0,1\}0\{1,\}$//' </code></pre> <ul> <li>remove trailing 0 IF there is a decimal separator</li> <li>remove the separator if there are only 0 after separator also (assuming there is at least a digit before like BC does)</li> </ul> | 18, 305, 387, 5282 | bash, floating-point, regex, sed | <h1>bash + sed: trim trailing zeroes off a floating point number?</h1>
<p>I'm trying to get trim off trailing decimal zeroes off a floating point number, but no luck so far.</p>
<pre><code>echo "3/2" | bc -l | sed s/0\{1,\}\$//
1.50000000000000000000
</code></pre>
<p>I was hoping to get <code>1.5</code> but somehow t... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,909 | bash | # bash + sed: trim trailing zeroes off a floating point number?
I'm trying to get trim off trailing decimal zeroes off a floating point number, but no luck so far.
```
echo "3/2" | bc -l | sed s/0\{1,\}\$//
1.50000000000000000000
```
I was hoping to get `1.5` but somehow the trailing zeroes are not truncated. If ins... | ```
echo "3/2" | bc -l | sed '/\./ s/\.\{0,1\}0\{1,\}$//'
```
- remove trailing 0 IF there is a decimal separator
- remove the separator if there are only 0 after separator also (assuming there is at least a digit before like BC does) |
23351432 | Executing a Powershell Script in Fake | 9 | 2014-04-28 21:23:47 | <p>What is the best way to go about executing a Powershell script in the Fake build automation tool ?</p>
<p>I feel that there should be an obvious answer to this question, but have not been able to find anything by searching.</p>
| 1,939 | 395,440 | 2014-04-29 09:29:43 | 23,360,748 | 16 | 2014-04-29 09:29:43 | 30,348 | 2014-04-29 09:29:43 | https://stackoverflow.com/q/23351432 | https://stackoverflow.com/a/23360748 | <p>As you mention in your comment, using the <code>PowerShell</code> class makes this very easy.</p>
<pre><code>#r "FakeLib.dll"
#r "System.Management.Automation"
open Fake
open System.Management.Automation
Target "RunSomePowerShell" <| fun _ ->
PowerShell.Create()
.AddScript("(Get-Process | ? Proces... | <p>As you mention in your comment, using the <code>PowerShell</code> class makes this very easy.</p> <pre><code>#r "FakeLib.dll" #r "System.Management.Automation" open Fake open System.Management.Automation Target "RunSomePowerShell" <| fun _ -> PowerShell.Create() .AddScript("(Get-Process | ? Proces... | 526, 1198, 97260 | f#, f#-fake, powershell | <h1>Executing a Powershell Script in Fake</h1>
<p>What is the best way to go about executing a Powershell script in the Fake build automation tool ?</p>
<p>I feel that there should be an obvious answer to this question, but have not been able to find anything by searching.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,910 | bash | # Executing a Powershell Script in Fake
What is the best way to go about executing a Powershell script in the Fake build automation tool ?
I feel that there should be an obvious answer to this question, but have not been able to find anything by searching. | As you mention in your comment, using the `PowerShell` class makes this very easy.
```
#r "FakeLib.dll"
#r "System.Management.Automation"
open Fake
open System.Management.Automation
Target "RunSomePowerShell" <| fun _ ->
PowerShell.Create()
.AddScript("(Get-Process | ? ProcessName -eq 'chrome' | measure Wo... |
22361722 | Simplifying advanced Bash prompt variable (PS1) code | 9 | 2014-03-12 19:20:12 | <p>So I've found the following cool Bash prompt:</p>
<p><img src="https://i.sstatic.net/7vdZq.jpg" alt="Bash prompt"></p>
<p>..with the very basic logic of:</p>
<pre><code>PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi) $(if [[ $... | 3,788 | 1,821,548 | 2014-03-12 20:15:43 | 22,362,727 | 16 | 2014-03-12 20:10:03 | 1,126,841 | 2014-03-12 20:15:43 | https://stackoverflow.com/q/22361722 | https://stackoverflow.com/a/22362727 | <p>Use <code>PROMPT_COMMAND</code> to build the value up in a sane fashion. This saves a lot of quoting and makes the text much more readable. Note that you can use <code>\e</code> instead of <code>\033</code> to represent the escape character inside a prompt.</p>
<pre><code>set_prompt () {
local last_command=$? ... | <p>Use <code>PROMPT_COMMAND</code> to build the value up in a sane fashion. This saves a lot of quoting and makes the text much more readable. Note that you can use <code>\e</code> instead of <code>\033</code> to represent the escape character inside a prompt.</p> <pre><code>set_prompt () { local last_command=$? ... | 387, 53034 | bash, ps1 | <h1>Simplifying advanced Bash prompt variable (PS1) code</h1>
<p>So I've found the following cool Bash prompt:</p>
<p><img src="https://i.sstatic.net/7vdZq.jpg" alt="Bash prompt"></p>
<p>..with the very basic logic of:</p>
<pre><code>PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\2... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,911 | bash | # Simplifying advanced Bash prompt variable (PS1) code
So I've found the following cool Bash prompt:
..with the very basic logic of:
```
PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\";... | Use `PROMPT_COMMAND` to build the value up in a sane fashion. This saves a lot of quoting and makes the text much more readable. Note that you can use `\e` instead of `\033` to represent the escape character inside a prompt.
```
set_prompt () {
local last_command=$? # Must come first!
PS1=""
# Add a brigh... |
21434064 | How to become a Jenkins user? | 9 | 2014-01-29 14:31:26 | <p>I have installed Jenkins and during installation an user named <code>jenkins</code> has been created. I can see from the documentation:</p>
<p><a href="https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+on+Ubuntu" rel="noreferrer">The 'jenkins' user is created to run this service.</a> </p>
<p>Now I nee... | 24,585 | 2,195,440 | 2018-08-14 04:50:41 | 21,435,987 | 16 | 2014-01-29 15:52:03 | 2,195,440 | 2014-01-29 16:21:03 | https://stackoverflow.com/q/21434064 | https://stackoverflow.com/a/21435987 | <p>Basically for this Jenkins user <code>jenkins</code> bash was not configured.</p>
<pre><code>jenkins:x:496:492:Jenkins Continuous Build server:/var/lib/jenkins:/bin/false
</code></pre>
<p>So we need to set the bash for this user and that resolved the issue. I used the following command:</p>
<pre><code>sudo usermo... | <p>Basically for this Jenkins user <code>jenkins</code> bash was not configured.</p> <pre><code>jenkins:x:496:492:Jenkins Continuous Build server:/var/lib/jenkins:/bin/false </code></pre> <p>So we need to set the bash for this user and that resolved the issue. I used the following command:</p> <pre><code>sudo usermo... | 387, 390, 1066, 48063, 64999 | bash, continuous-deployment, continuous-integration, jenkins, shell | <h1>How to become a Jenkins user?</h1>
<p>I have installed Jenkins and during installation an user named <code>jenkins</code> has been created. I can see from the documentation:</p>
<p><a href="https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+on+Ubuntu" rel="noreferrer">The 'jenkins' user is created to r... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,912 | bash | # How to become a Jenkins user?
I have installed Jenkins and during installation an user named `jenkins` has been created. I can see from the documentation:
[The 'jenkins' user is created to run this service.](https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+on+Ubuntu)
Now I need to become this `jenkin... | Basically for this Jenkins user `jenkins` bash was not configured.
```
jenkins:x:496:492:Jenkins Continuous Build server:/var/lib/jenkins:/bin/false
```
So we need to set the bash for this user and that resolved the issue. I used the following command:
```
sudo usermod -s /bin/bash jenkins
```
See below:
```
jenki... |
19515962 | telnet redis bash script | 9 | 2013-10-22 10:58:11 | <p>How can I extract the output from a telnet command on a remote redis-server in a bash script.</p>
<p>I would do:</p>
<pre><code>telnet remote-redis-ip 6379
LRANGE mylist 0 -1
</code></pre>
<p>And save the result in a variable. How can I reach this goal under a bash script?</p>
<p>Thanks,</p>
| 38,199 | 1,128,345 | 2013-10-22 14:30:57 | 19,520,520 | 16 | 2013-10-22 14:22:13 | 2,446,350 | 2013-10-22 14:30:57 | https://stackoverflow.com/q/19515962 | https://stackoverflow.com/a/19520520 | <p>try this </p>
<pre><code>RET=`telnet remote-redis-ip 6379 << EOF
LRANGE mylist 0 -1
EOF`
echo $RET
</code></pre>
<p>and I think using expect <a href="https://stackoverflow.com/questions/7013137/automating-telnet-session-using-bash-scripts">automating telnet session using bash scripts</a> post by fedorqui wi... | <p>try this </p> <pre><code>RET=`telnet remote-redis-ip 6379 << EOF LRANGE mylist 0 -1 EOF` echo $RET </code></pre> <p>and I think using expect <a href="https://stackoverflow.com/questions/7013137/automating-telnet-session-using-bash-scripts">automating telnet session using bash scripts</a> post by fedorqui wi... | 387, 6056, 43464 | bash, redis, telnet | <h1>telnet redis bash script</h1>
<p>How can I extract the output from a telnet command on a remote redis-server in a bash script.</p>
<p>I would do:</p>
<pre><code>telnet remote-redis-ip 6379
LRANGE mylist 0 -1
</code></pre>
<p>And save the result in a variable. How can I reach this goal under a bash script?</p>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,913 | bash | # telnet redis bash script
How can I extract the output from a telnet command on a remote redis-server in a bash script.
I would do:
```
telnet remote-redis-ip 6379
LRANGE mylist 0 -1
```
And save the result in a variable. How can I reach this goal under a bash script?
Thanks, | try this
```
RET=`telnet remote-redis-ip 6379 << EOF
LRANGE mylist 0 -1
EOF`
echo $RET
```
and I think using expect [automating telnet session using bash scripts](https://stackoverflow.com/questions/7013137/automating-telnet-session-using-bash-scripts) post by fedorqui will be better |
18061606 | add string in each line at the begining of column | 9 | 2013-08-05 15:11:48 | <p>I am interested in adding a string <code>chr</code> to the beginning of column in each line.</p>
<p>The file is tab delimited and looks something like:</p>
<pre><code>re1 1 AGT
re2 1 AGT
re3 2 ACGTCA
re12 3 ACGTACT
</code></pre>
<p>what I need is:</p>
<pre><code>re1 chr1 AGT
re2 chr1 AGT
re3 chr2 ... | 15,790 | 2,553,476 | 2023-06-29 12:59:16 | 18,061,775 | 16 | 2013-08-05 15:20:17 | 1,983,854 | 2013-08-05 15:20:17 | https://stackoverflow.com/q/18061606 | https://stackoverflow.com/a/18061775 | <p>What about this?</p>
<pre><code>$ awk '$2="chr"$2' file
re1 chr1 AGT
re2 chr1 AGT
re3 chr2 ACGTCA
re12 chr3 ACGTACT
</code></pre>
<h3>Explanation</h3>
<p>With <code>$2="chr"$2</code> we add <code>chr</code> to the 2nd field. Then we do not need any other command to get the desired output, as the default behaviour... | <p>What about this?</p> <pre><code>$ awk '$2="chr"$2' file re1 chr1 AGT re2 chr1 AGT re3 chr2 ACGTCA re12 chr3 ACGTACT </code></pre> <h3>Explanation</h3> <p>With <code>$2="chr"$2</code> we add <code>chr</code> to the 2nd field. Then we do not need any other command to get the desired output, as the default behaviour... | 139, 387, 990 | awk, bash, string | <h1>add string in each line at the begining of column</h1>
<p>I am interested in adding a string <code>chr</code> to the beginning of column in each line.</p>
<p>The file is tab delimited and looks something like:</p>
<pre><code>re1 1 AGT
re2 1 AGT
re3 2 ACGTCA
re12 3 ACGTACT
</code></pre>
<p>what I need is:... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,914 | bash | # add string in each line at the begining of column
I am interested in adding a string `chr` to the beginning of column in each line.
The file is tab delimited and looks something like:
```
re1 1 AGT
re2 1 AGT
re3 2 ACGTCA
re12 3 ACGTACT
```
what I need is:
```
re1 chr1 AGT
re2 chr1 AGT
re3 chr2 ... | What about this?
```
$ awk '$2="chr"$2' file
re1 chr1 AGT
re2 chr1 AGT
re3 chr2 ACGTCA
re12 chr3 ACGTACT
```
### Explanation
With `$2="chr"$2` we add `chr` to the 2nd field. Then we do not need any other command to get the desired output, as the default behaviour of awk is `print $0`.
To make sure the OFS (output f... |
17530141 | how to include a file containing variables in a shell script | 9 | 2013-07-08 15:12:14 | <p>i have many script shell and i want to include a file containing variables in this shell </p>
<p>script?</p>
<p>My var script:</p>
<pre><code>###################################################################################
ORACLE_LOGIN=login
ORACLE_PWD=pwd
CHEMIN_1="/home/"
CHEMIN_2="/scripts/"
LOG_FILE="$CHEM... | 23,092 | 296,635 | 2021-12-08 18:39:13 | 17,530,211 | 16 | 2013-07-08 15:15:44 | 1,057,909 | 2013-07-08 15:15:44 | https://stackoverflow.com/q/17530141 | https://stackoverflow.com/a/17530211 | <p>It depends which shell, but one of these two usually works:</p>
<pre><code>. var
</code></pre>
<p>or</p>
<pre><code>source var
</code></pre>
<p>I'm not sure about ksh, but I'd imagine both would work.</p>
| <p>It depends which shell, but one of these two usually works:</p> <pre><code>. var </code></pre> <p>or</p> <pre><code>source var </code></pre> <p>I'm not sure about ksh, but I'd imagine both would work.</p> | 58, 387, 10327 | bash, linux, sh | <h1>how to include a file containing variables in a shell script</h1>
<p>i have many script shell and i want to include a file containing variables in this shell </p>
<p>script?</p>
<p>My var script:</p>
<pre><code>###################################################################################
ORACLE_LOGIN=login... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,915 | bash | # how to include a file containing variables in a shell script
i have many script shell and i want to include a file containing variables in this shell
script?
My var script:
```
###################################################################################
ORACLE_LOGIN=login
ORACLE_PWD=pwd
CHEMIN_1="/home/"
C... | It depends which shell, but one of these two usually works:
```
. var
```
or
```
source var
```
I'm not sure about ksh, but I'd imagine both would work. |
16897659 | show just one column in result? | 9 | 2013-06-03 13:16:32 | <p>Bit of a simple question but how do I select a specific column in the below code? </p>
<p>I only want to show TIME column and nothing else. I try and put in FORMAT_TABLE TIME but it just populates with TIME multiple times without actually showing the time..</p>
<pre><code>$server_event = Get-Content -Path "c:\Temp... | 30,862 | 461,030 | 2013-06-03 13:31:36 | 16,897,769 | 16 | 2013-06-03 13:22:02 | 520,612 | 2013-06-03 13:22:02 | https://stackoverflow.com/q/16897659 | https://stackoverflow.com/a/16897769 | <p>try:</p>
<pre><code>$event = Get-EventLog -computerName $servers -logname system | Where-Object {$_.EventID -eq 6009} | Select TimeGenerated -First 1
</code></pre>
| <p>try:</p> <pre><code>$event = Get-EventLog -computerName $servers -logname system | Where-Object {$_.EventID -eq 6009} | Select TimeGenerated -First 1 </code></pre> | 526, 24067 | powershell, powershell-2.0 | <h1>show just one column in result?</h1>
<p>Bit of a simple question but how do I select a specific column in the below code? </p>
<p>I only want to show TIME column and nothing else. I try and put in FORMAT_TABLE TIME but it just populates with TIME multiple times without actually showing the time..</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 | 8,916 | bash | # show just one column in result?
Bit of a simple question but how do I select a specific column in the below code?
I only want to show TIME column and nothing else. I try and put in FORMAT_TABLE TIME but it just populates with TIME multiple times without actually showing the time..
```
$server_event = Get-Content -... | try:
```
$event = Get-EventLog -computerName $servers -logname system | Where-Object {$_.EventID -eq 6009} | Select TimeGenerated -First 1
``` |
14553804 | sed not replacing lines | 9 | 2013-01-28 00:12:40 | <p>I have a file with 1 line of text, called <code>output</code>. I have write access to the file. I can change it from an editor with no problems.</p>
<pre><code>$ cat output
1
$ ls -l o*
-rw-rw-r-- 1 jbk jbk 2 Jan 27 18:44 output
</code></pre>
<p>What I want to do is replace the first (and only) line in this file w... | 20,148 | 2,015,873 | 2014-01-24 18:31:03 | 14,553,816 | 16 | 2013-01-28 00:13:58 | 778,118 | 2013-01-28 00:23:13 | https://stackoverflow.com/q/14553804 | https://stackoverflow.com/a/14553816 | <p>Sed operates on streams and prints its output to standard out.</p>
<p>It does not modify the input file.</p>
<p>It's typically used like this when you want to capture its output in a file:</p>
<pre><code>#
# replace every occurrence of foo with bar in input-file
#
sed 's/foo/bar/g' input-file > output-file
</c... | <p>Sed operates on streams and prints its output to standard out.</p> <p>It does not modify the input file.</p> <p>It's typically used like this when you want to capture its output in a file:</p> <pre><code># # replace every occurrence of foo with bar in input-file # sed 's/foo/bar/g' input-file > output-file </c... | 387, 2498, 5282 | bash, replace, sed | <h1>sed not replacing lines</h1>
<p>I have a file with 1 line of text, called <code>output</code>. I have write access to the file. I can change it from an editor with no problems.</p>
<pre><code>$ cat output
1
$ ls -l o*
-rw-rw-r-- 1 jbk jbk 2 Jan 27 18:44 output
</code></pre>
<p>What I want to do is replace the fir... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,917 | bash | # sed not replacing lines
I have a file with 1 line of text, called `output`. I have write access to the file. I can change it from an editor with no problems.
```
$ cat output
1
$ ls -l o*
-rw-rw-r-- 1 jbk jbk 2 Jan 27 18:44 output
```
What I want to do is replace the first (and only) line in this file with a new v... | Sed operates on streams and prints its output to standard out.
It does not modify the input file.
It's typically used like this when you want to capture its output in a file:
```
#
# replace every occurrence of foo with bar in input-file
#
sed 's/foo/bar/g' input-file > output-file
```
The above command invokes `se... |
14234907 | Replacing values in large table using conversion table | 9 | 2013-01-09 12:09:46 | <p>I am trying to replace values in a large space-delimited text-file and could not find a suitable answer for this specific problem:</p>
<p>Say I have a file "OLD_FILE", containing a header and approximately 2 million rows:</p>
<pre><code>COL1 COL2 COL3 COL4 COL5
rs10 7 92221824 C A
rs1000000 12 125456933 G A
rs10... | 2,793 | 1,961,199 | 2017-09-22 05:51:54 | 14,235,083 | 16 | 2013-01-09 12:20:59 | 751,863 | 2013-01-10 00:34:47 | https://stackoverflow.com/q/14234907 | https://stackoverflow.com/a/14235083 | <p>Here's one way using <code>awk</code>:</p>
<pre><code>awk 'NR==1 { next } FNR==NR { a[$1]=$2; next } $1 in a { $1=a[$1] }1' TABLE OLD_FILE
</code></pre>
<p>Results:</p>
<pre><code>COL1 COL2 COL3 COL4 COL5
7_92383888 7 92221824 C A
12_126890980 12 125456933 G A
4_21618674 4 21227772 T C
4_1357325 4 1347325 G C
4_3... | <p>Here's one way using <code>awk</code>:</p> <pre><code>awk 'NR==1 { next } FNR==NR { a[$1]=$2; next } $1 in a { $1=a[$1] }1' TABLE OLD_FILE </code></pre> <p>Results:</p> <pre><code>COL1 COL2 COL3 COL4 COL5 7_92383888 7 92221824 C A 12_126890980 12 125456933 G A 4_21618674 4 21227772 T C 4_1357325 4 1347325 G C 4_3... | 34, 387, 990, 5282, 26600 | awk, bash, large-data, sed, unix | <h1>Replacing values in large table using conversion table</h1>
<p>I am trying to replace values in a large space-delimited text-file and could not find a suitable answer for this specific problem:</p>
<p>Say I have a file "OLD_FILE", containing a header and approximately 2 million rows:</p>
<pre><code>COL1 COL2 COL3... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,918 | bash | # Replacing values in large table using conversion table
I am trying to replace values in a large space-delimited text-file and could not find a suitable answer for this specific problem:
Say I have a file "OLD_FILE", containing a header and approximately 2 million rows:
```
COL1 COL2 COL3 COL4 COL5
rs10 7 92221824 ... | Here's one way using `awk`:
```
awk 'NR==1 { next } FNR==NR { a[$1]=$2; next } $1 in a { $1=a[$1] }1' TABLE OLD_FILE
```
Results:
```
COL1 COL2 COL3 COL4 COL5
7_92383888 7 92221824 C A
12_126890980 12 125456933 G A
4_21618674 4 21227772 T C
4_1357325 4 1347325 G C
4_37225069 4 36901464 C A
4_84778125 4 84997149 T C
... |
13546672 | Custom Oh My Zsh theme: long prompts disappear / cut off | 9 | 2012-11-24 23:21:11 | <p>I had a go at making my own Oh My Zsh theme earlier. All is well, except when I type long lines in the prompt (any longer than the line seen below), the line disappears. The line re-appears if I resize the window, however.</p>
<p>Is there something in my theme that is causing this to happen?</p>
<p><img src="https... | 5,862 | null | 2018-10-07 02:06:50 | 14,179,542 | 16 | 2013-01-06 05:16:19 | 1,084,945 | 2013-01-06 05:16:19 | https://stackoverflow.com/q/13546672 | https://stackoverflow.com/a/14179542 | <p>Incidentally, your link is broken, highlighting one of the issues with posting a link to code instead of code itself - any future viewers of your question can't get a full picture. </p>
<p>I think your problem is that the 'color' characters you use should be escaped in a pair of <a href="http://www.manpagez.com/man... | <p>Incidentally, your link is broken, highlighting one of the issues with posting a link to code instead of code itself - any future viewers of your question can't get a full picture. </p> <p>I think your problem is that the 'color' characters you use should be escaped in a pair of <a href="http://www.manpagez.com/man... | 390, 1669, 3791, 5003 | prompt, shell, themes, zsh | <h1>Custom Oh My Zsh theme: long prompts disappear / cut off</h1>
<p>I had a go at making my own Oh My Zsh theme earlier. All is well, except when I type long lines in the prompt (any longer than the line seen below), the line disappears. The line re-appears if I resize the window, however.</p>
<p>Is there something i... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,919 | bash | # Custom Oh My Zsh theme: long prompts disappear / cut off
I had a go at making my own Oh My Zsh theme earlier. All is well, except when I type long lines in the prompt (any longer than the line seen below), the line disappears. The line re-appears if I resize the window, however.
Is there something in my theme that ... | Incidentally, your link is broken, highlighting one of the issues with posting a link to code instead of code itself - any future viewers of your question can't get a full picture.
I think your problem is that the 'color' characters you use should be escaped in a pair of [`%{...%}`](http://www.manpagez.com/man/1/zshmi... |
12420524 | why find need "{} \"? | 9 | 2012-09-14 08:13:27 | <p>I use command of find, for example: </p>
<pre><code>find . -name "*.log" -exec grep "running" {} \;
</code></pre>
<p>why the command of find need <code>{}</code> , a blank and <code>\</code>?</p>
| 2,729 | 689,464 | 2012-09-14 08:56:37 | 12,420,573 | 16 | 2012-09-14 08:17:36 | 429,322 | 2012-09-14 08:17:36 | https://stackoverflow.com/q/12420524 | https://stackoverflow.com/a/12420573 | <p>This is because of the <code>-exec</code> parameter: the <code>{}</code> is a placeholder for the file that will be passed to the command.</p>
<p>the semicolon (<code>;</code>) tells <code>find</code> that the <code>-exec</code> argument list is over, but since <code>;</code> is also a shell operator, you need to e... | <p>This is because of the <code>-exec</code> parameter: the <code>{}</code> is a placeholder for the file that will be passed to the command.</p> <p>the semicolon (<code>;</code>) tells <code>find</code> that the <code>-exec</code> argument list is over, but since <code>;</code> is also a shell operator, you need to e... | 58, 387 | bash, linux | <h1>why find need "{} \"?</h1>
<p>I use command of find, for example: </p>
<pre><code>find . -name "*.log" -exec grep "running" {} \;
</code></pre>
<p>why the command of find need <code>{}</code> , a blank and <code>\</code>?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,920 | bash | # why find need "{} \"?
I use command of find, for example:
```
find . -name "*.log" -exec grep "running" {} \;
```
why the command of find need `{}` , a blank and `\`? | This is because of the `-exec` parameter: the `{}` is a placeholder for the file that will be passed to the command.
the semicolon (`;`) tells `find` that the `-exec` argument list is over, but since `;` is also a shell operator, you need to escape it so that it reaches `find`: `\;`
`-exec` works like this: for every... |
10671667 | How do I run MinGW with a script? | 9 | 2012-05-20 07:42:54 | <p>Is there a way to run MinGW, from msys.bat or any other method, from a batch file and input a <code>.sh</code> file for it to run?</p>
| 13,947 | 451,860 | 2017-01-06 22:31:30 | 11,910,944 | 16 | 2012-08-11 00:50:00 | 1,002,260 | 2012-08-11 00:50:00 | https://stackoverflow.com/q/10671667 | https://stackoverflow.com/a/11910944 | <p>Batch file like this</p>
<pre><code>C:\MinGW\msys\1.0\bin\sh ~/test.sh
pause
</code></pre>
| <p>Batch file like this</p> <pre><code>C:\MinGW\msys\1.0\bin\sh ~/test.sh pause </code></pre> | 387, 4086, 7002 | bash, batch-file, mingw | <h1>How do I run MinGW with a script?</h1>
<p>Is there a way to run MinGW, from msys.bat or any other method, from a batch file and input a <code>.sh</code> file for it to run?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,921 | bash | # How do I run MinGW with a script?
Is there a way to run MinGW, from msys.bat or any other method, from a batch file and input a `.sh` file for it to run? | Batch file like this
```
C:\MinGW\msys\1.0\bin\sh ~/test.sh
pause
``` |
10140213 | bash substitute first character in every line | 9 | 2012-04-13 11:47:32 | <p>My file looks like this:</p>
<pre><code> 1 chrX_73833098_73834098
1 chrX_73889652_73890652
1 chrX_91194501_91195501
1 chrX_92000157_92001157
1 chrX_92106500_92107500
</code></pre>
<p>I want to replace first character "1" into 0. Wanted output is :</p>
<pre><code> 0 chrX_73833098_73834098
0 chrX_738896... | 49,161 | 1,286,528 | 2017-07-04 06:50:26 | 10,140,263 | 16 | 2012-04-13 11:50:58 | 1,277,417 | 2012-04-13 11:56:38 | https://stackoverflow.com/q/10140213 | https://stackoverflow.com/a/10140263 | <p>There is whitespace character at the begging of each line.</p>
<p>you can try:</p>
<pre><code>sed 's/^\s*./0/g' file
</code></pre>
<p>\s - match white space characters</p>
<p>output:</p>
<pre><code>0 chrX_73833098_73834098
0 chrX_73889652_73890652
0 chrX_91194501_91195501
0 chrX_92000157_92001157
0 chrX_921065... | <p>There is whitespace character at the begging of each line.</p> <p>you can try:</p> <pre><code>sed 's/^\s*./0/g' file </code></pre> <p>\s - match white space characters</p> <p>output:</p> <pre><code>0 chrX_73833098_73834098 0 chrX_73889652_73890652 0 chrX_91194501_91195501 0 chrX_92000157_92001157 0 chrX_921065... | 387, 5282 | bash, sed | <h1>bash substitute first character in every line</h1>
<p>My file looks like this:</p>
<pre><code> 1 chrX_73833098_73834098
1 chrX_73889652_73890652
1 chrX_91194501_91195501
1 chrX_92000157_92001157
1 chrX_92106500_92107500
</code></pre>
<p>I want to replace first character "1" into 0. Wanted output is :</p>... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,922 | bash | # bash substitute first character in every line
My file looks like this:
```
1 chrX_73833098_73834098
1 chrX_73889652_73890652
1 chrX_91194501_91195501
1 chrX_92000157_92001157
1 chrX_92106500_92107500
```
I want to replace first character "1" into 0. Wanted output is :
```
0 chrX_73833098_73834098
0 ... | There is whitespace character at the begging of each line.
you can try:
```
sed 's/^\s*./0/g' file
```
\s - match white space characters
output:
```
0 chrX_73833098_73834098
0 chrX_73889652_73890652
0 chrX_91194501_91195501
0 chrX_92000157_92001157
0 chrX_92106500_92107500
```
if you want to preserve whitespace c... |
10006449 | Changing the first letter of every line in a file to uppercase | 9 | 2012-04-04 07:09:09 | <p>I need to change the first letter of every line in a file to uppercase, e.g.</p>
<pre><code>the bear ate the fish.
the river was too fast.
</code></pre>
<p>Would become:</p>
<pre><code>The bear ate the fish.
The river was too fast.
</code></pre>
<ul>
<li>The document contains some special letters: a, a, á, à, ǎ,... | 12,299 | 834,616 | 2017-09-13 12:13:30 | 10,006,514 | 16 | 2012-04-04 07:14:12 | 1,076,171 | 2012-04-04 07:27:22 | https://stackoverflow.com/q/10006449 | https://stackoverflow.com/a/10006514 | <p>Use <code>sed</code>:</p>
<pre><code>sed 's/^\(.\)/\U\1/' yourfile > convertedfile
</code></pre>
<p>Little explanation:</p>
<ul>
<li>the <code>^</code> represents the start of a line.</li>
<li><code>.</code> matches any character</li>
<li><code>\U</code> converts to uppercase</li>
<li><code>\( ... \)</code> s... | <p>Use <code>sed</code>:</p> <pre><code>sed 's/^\(.\)/\U\1/' yourfile > convertedfile </code></pre> <p>Little explanation:</p> <ul> <li>the <code>^</code> represents the start of a line.</li> <li><code>.</code> matches any character</li> <li><code>\U</code> converts to uppercase</li> <li><code>\( ... \)</code> s... | 387, 6107, 14966 | bash, case, unicode-string | <h1>Changing the first letter of every line in a file to uppercase</h1>
<p>I need to change the first letter of every line in a file to uppercase, e.g.</p>
<pre><code>the bear ate the fish.
the river was too fast.
</code></pre>
<p>Would become:</p>
<pre><code>The bear ate the fish.
The river was too fast.
</code></p... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,923 | bash | # Changing the first letter of every line in a file to uppercase
I need to change the first letter of every line in a file to uppercase, e.g.
```
the bear ate the fish.
the river was too fast.
```
Would become:
```
The bear ate the fish.
The river was too fast.
```
- The document contains some special letters: a, ... | Use `sed`:
```
sed 's/^\(.\)/\U\1/' yourfile > convertedfile
```
Little explanation:
- the `^` represents the start of a line.
- `.` matches any character
- `\U` converts to uppercase
- `\( ... \)` specifies a section to be referenced later (as `\1` in this case); parentheses are to be escaped here.
Do **not** try... |
9259166 | How to force wget to skip links leading to parent elements? | 9 | 2012-02-13 10:49:16 | <p>Let's say I've got:</p>
<pre><code>http://svnserver/repoid/appname/language/module/
</code></pre>
<p>I'm trying to download everything below <strong>module</strong> node, unfortunately page contains links to both - items below and items above in hierarchy (much like bash <code>ls -ltr</code> output). So when I use... | 5,426 | 571,293 | 2014-09-03 14:36:07 | 9,259,224 | 16 | 2012-02-13 10:53:25 | null | 2012-02-13 10:53:25 | https://stackoverflow.com/q/9259166 | https://stackoverflow.com/a/9259224 | <p>Sounds like you are looking for the <code>--no-parent</code> parameter. </p>
<p>From the output of <code>wget --help</code> </p>
<pre><code> -np, --no-parent don't ascend to the parent directory.
</code></pre>
| <p>Sounds like you are looking for the <code>--no-parent</code> parameter. </p> <p>From the output of <code>wget --help</code> </p> <pre><code> -np, --no-parent don't ascend to the parent directory. </code></pre> | 387, 5583 | bash, wget | <h1>How to force wget to skip links leading to parent elements?</h1>
<p>Let's say I've got:</p>
<pre><code>http://svnserver/repoid/appname/language/module/
</code></pre>
<p>I'm trying to download everything below <strong>module</strong> node, unfortunately page contains links to both - items below and items above in ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,924 | bash | # How to force wget to skip links leading to parent elements?
Let's say I've got:
```
http://svnserver/repoid/appname/language/module/
```
I'm trying to download everything below **module** node, unfortunately page contains links to both - items below and items above in hierarchy (much like bash `ls -ltr` output). S... | Sounds like you are looking for the `--no-parent` parameter.
From the output of `wget --help`
```
-np, --no-parent don't ascend to the parent directory.
``` |
8519219 | xargs and find, rm complaining about \n (newline) in filename | 9 | 2011-12-15 11:17:39 | <p>I am trying to delete the oldest file in a tree with a script in Debian.</p>
<pre><code>find /home/backups -type f \( -name \*.tgz -o -name \*.gz \) -print0 | xargs -0 ls -t | tail -1 | xargs -0 rm
</code></pre>
<p>But I am getting an error:</p>
<pre><code>rm: cannot remove `/home/backups/tree/structure/file.2011... | 15,865 | 1,076,412 | 2012-10-05 12:20:54 | 8,519,277 | 16 | 2011-12-15 11:21:51 | 648,658 | 2012-05-22 06:25:03 | https://stackoverflow.com/q/8519219 | https://stackoverflow.com/a/8519277 | <p>The <code>ls</code> appends a newline and the last xargs -0 says the newline is part of the file name.
Run the last xargs with <code>-d '\n'</code> instead of <code>-0</code>.</p>
<p>BTW, due to the way xargs works, your whole pipe is a bug waiting to happen. Consider a really long file name list produced by the <c... | <p>The <code>ls</code> appends a newline and the last xargs -0 says the newline is part of the file name. Run the last xargs with <code>-d '\n'</code> instead of <code>-0</code>.</p> <p>BTW, due to the way xargs works, your whole pipe is a bug waiting to happen. Consider a really long file name list produced by the <c... | 58, 387, 10326 | bash, linux, xargs | <h1>xargs and find, rm complaining about \n (newline) in filename </h1>
<p>I am trying to delete the oldest file in a tree with a script in Debian.</p>
<pre><code>find /home/backups -type f \( -name \*.tgz -o -name \*.gz \) -print0 | xargs -0 ls -t | tail -1 | xargs -0 rm
</code></pre>
<p>But I am getting an error:</... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,925 | bash | # xargs and find, rm complaining about \n (newline) in filename
I am trying to delete the oldest file in a tree with a script in Debian.
```
find /home/backups -type f \( -name \*.tgz -o -name \*.gz \) -print0 | xargs -0 ls -t | tail -1 | xargs -0 rm
```
But I am getting an error:
```
rm: cannot remove `/home/backu... | The `ls` appends a newline and the last xargs -0 says the newline is part of the file name.
Run the last xargs with `-d '\n'` instead of `-0`.
BTW, due to the way xargs works, your whole pipe is a bug waiting to happen. Consider a really long file name list produced by the `find`, so that the `xargs -0 ls` runs `ls` m... |
8516823 | redirecting output to a file in C | 9 | 2011-12-15 07:57:05 | <p>i coded a basic shell in C for executing basic commands it'll execute commands <code>ls</code>, <code>ls -al</code> , <code>ls -al | more</code> etc.</p>
<p>i want to execute following command in my shell.
like ;</p>
<pre><code>ls -al > a.txt
</code></pre>
<p>this will give me <code>a.txt</code> file which con... | 56,124 | 1,099,365 | 2012-06-11 06:28:18 | 8,517,401 | 16 | 2011-12-15 08:52:56 | 85,371 | 2011-12-15 08:52:56 | https://stackoverflow.com/q/8516823 | https://stackoverflow.com/a/8517401 | <p>This is the result of my testing things out with dup2</p>
<p>The more subtle point is remembering fflush at the right times :) Otherwise, you'll get very surprising results.</p>
<p>Also, prefer <code>fileno</code> instead of hardcoding <code>1</code> (stdout) <code>2</code> (stderr).</p>
<p>Redirecting <code>stdi... | <p>This is the result of my testing things out with dup2</p> <p>The more subtle point is remembering fflush at the right times :) Otherwise, you'll get very surprising results.</p> <p>Also, prefer <code>fileno</code> instead of hardcoding <code>1</code> (stdout) <code>2</code> (stderr).</p> <p>Redirecting <code>stdi... | 58, 390 | linux, shell | <h1>redirecting output to a file in C</h1>
<p>i coded a basic shell in C for executing basic commands it'll execute commands <code>ls</code>, <code>ls -al</code> , <code>ls -al | more</code> etc.</p>
<p>i want to execute following command in my shell.
like ;</p>
<pre><code>ls -al > a.txt
</code></pre>
<p>this wil... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,926 | bash | # redirecting output to a file in C
i coded a basic shell in C for executing basic commands it'll execute commands `ls`, `ls -al` , `ls -al | more` etc.
i want to execute following command in my shell.
like ;
```
ls -al > a.txt
```
this will give me `a.txt` file which contain output of `ls -al` process.
i found a o... | This is the result of my testing things out with dup2
The more subtle point is remembering fflush at the right times :) Otherwise, you'll get very surprising results.
Also, prefer `fileno` instead of hardcoding `1` (stdout) `2` (stderr).
Redirecting `stdin` was left as an exercise for the reader
```
#include <stdio... |
8287453 | How do I write this in Powershell script? | 9 | 2011-11-27 17:26:24 | <p>I am very new to Powershell script.</p>
<p>I am trying to run a powershell script from a cmd</p>
<pre><code>powershell.exe Set-ExecutionPolicy Unrestricted
powershell.exe .\startup.ps1
</code></pre>
<p>I need two lines within powershell script.</p>
<pre><code>%WINDIR%\system32\inetsrv\appcmd.exe add apppool /nam... | 10,362 | 92,153 | 2011-11-27 20:02:51 | 8,288,516 | 16 | 2011-11-27 19:52:38 | 73,070 | 2011-11-27 19:52:38 | https://stackoverflow.com/q/8287453 | https://stackoverflow.com/a/8288516 | <p><strong>Short answer, including a question:</strong> Why the hell does that need to be a PowerShell script?</p>
<p>You can simply create a batch file containing</p>
<pre><code>%WINDIR%\system32\inetsrv\appcmd.exe add apppool /name:"VCPool" /managedRuntimeVersion:"v4.0" /managedPipelineMode:"Integrated"
%WINDIR%\sy... | <p><strong>Short answer, including a question:</strong> Why the hell does that need to be a PowerShell script?</p> <p>You can simply create a batch file containing</p> <pre><code>%WINDIR%\system32\inetsrv\appcmd.exe add apppool /name:"VCPool" /managedRuntimeVersion:"v4.0" /managedPipelineMode:"Integrated" %WINDIR%\sy... | 526 | powershell | <h1>How do I write this in Powershell script?</h1>
<p>I am very new to Powershell script.</p>
<p>I am trying to run a powershell script from a cmd</p>
<pre><code>powershell.exe Set-ExecutionPolicy Unrestricted
powershell.exe .\startup.ps1
</code></pre>
<p>I need two lines within powershell script.</p>
<pre><code>%W... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,927 | bash | # How do I write this in Powershell script?
I am very new to Powershell script.
I am trying to run a powershell script from a cmd
```
powershell.exe Set-ExecutionPolicy Unrestricted
powershell.exe .\startup.ps1
```
I need two lines within powershell script.
```
%WINDIR%\system32\inetsrv\appcmd.exe add apppool /nam... | **Short answer, including a question:** Why the hell does that need to be a PowerShell script?
You can simply create a batch file containing
```
%WINDIR%\system32\inetsrv\appcmd.exe add apppool /name:"VCPool" /managedRuntimeVersion:"v4.0" /managedPipelineMode:"Integrated"
%WINDIR%\system32\inetsrv\appcmd.exe set app ... |
6911520 | "Read" command in bash script is being skipped | 9 | 2011-08-02 11:47:09 | <p>I'm creating a script to update my linux distribution if I need to wipe the HD or I need to install Linux on another machine. So this script basically install all the programs I usually need. At the beginning a have a "read" command that asks if I want to install all the packages automatically or not. If I choose no... | 9,781 | null | 2017-07-06 19:53:44 | 6,924,649 | 16 | 2011-08-03 09:55:47 | 855,954 | 2011-08-03 09:55:47 | https://stackoverflow.com/q/6911520 | https://stackoverflow.com/a/6924649 | <p>The relevant portions of the code are still not complete but based on the comments I'm going to guess that your while loop looks like</p>
<pre><code>while read -r ... ; do
# do stuff ...
# read user input
read -r var
done < file
</code></pre>
<p>From this the problem is immediately apparent: the ... | <p>The relevant portions of the code are still not complete but based on the comments I'm going to guess that your while loop looks like</p> <pre><code>while read -r ... ; do # do stuff ... # read user input read -r var done < file </code></pre> <p>From this the problem is immediately apparent: the ... | 387, 3222 | bash, user-input | <h1>"Read" command in bash script is being skipped</h1>
<p>I'm creating a script to update my linux distribution if I need to wipe the HD or I need to install Linux on another machine. So this script basically install all the programs I usually need. At the beginning a have a "read" command that asks if I want to insta... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,928 | bash | # "Read" command in bash script is being skipped
I'm creating a script to update my linux distribution if I need to wipe the HD or I need to install Linux on another machine. So this script basically install all the programs I usually need. At the beginning a have a "read" command that asks if I want to install all th... | The relevant portions of the code are still not complete but based on the comments I'm going to guess that your while loop looks like
```
while read -r ... ; do
# do stuff ...
# read user input
read -r var
done < file
```
From this the problem is immediately apparent: the inner `read` is getting its in... |
6461769 | Enable / disable wifi via bash scripting on Android | 9 | 2011-06-23 23:23:26 | <p>I am trying to enable / disable the wifi device in my android device in a bash script. I am using the terminal emulator and the program Script Manager to execute bash scripts on the phone (which is a rooted Nexus One).
The normal way to do this in linux would be something like</p>
<pre><code>ifconfig eth0 up
</cod... | 34,693 | 813,234 | 2016-07-03 04:23:27 | 6,463,098 | 16 | 2011-06-24 03:43:23 | 236,465 | 2011-06-25 04:47:18 | https://stackoverflow.com/q/6461769 | https://stackoverflow.com/a/6463098 | <p>While it doesn't work in my non-rooted phone for obvious reasons, the results I'm obtaining are completely different while wifi is connected:</p>
<pre><code>$ ifconfig eth0
eth0: ip 192.168.0.102 mask 255.255.255.0 flags [up broadcast running multicast]
$ ifconfig eth0 up
error: SIOCSIFFLAGS (Permission denied)
</c... | <p>While it doesn't work in my non-rooted phone for obvious reasons, the results I'm obtaining are completely different while wifi is connected:</p> <pre><code>$ ifconfig eth0 eth0: ip 192.168.0.102 mask 255.255.255.0 flags [up broadcast running multicast] $ ifconfig eth0 up error: SIOCSIFFLAGS (Permission denied) </c... | 387, 531, 1386, 35600 | android, bash, scripting, wifi | <h1>Enable / disable wifi via bash scripting on Android</h1>
<p>I am trying to enable / disable the wifi device in my android device in a bash script. I am using the terminal emulator and the program Script Manager to execute bash scripts on the phone (which is a rooted Nexus One).
The normal way to do this in linux wo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,929 | bash | # Enable / disable wifi via bash scripting on Android
I am trying to enable / disable the wifi device in my android device in a bash script. I am using the terminal emulator and the program Script Manager to execute bash scripts on the phone (which is a rooted Nexus One).
The normal way to do this in linux would be so... | While it doesn't work in my non-rooted phone for obvious reasons, the results I'm obtaining are completely different while wifi is connected:
```
$ ifconfig eth0
eth0: ip 192.168.0.102 mask 255.255.255.0 flags [up broadcast running multicast]
$ ifconfig eth0 up
error: SIOCSIFFLAGS (Permission denied)
```
If you just ... |
2630812 | Get a list of function names in a shell script | 9 | 2010-04-13 15:23:23 | <p>I have a Bourne Shell script that has several functions in it, and allows to be called in the following way:</p>
<pre><code>my.sh <func_name> <param1> <param2>
</code></pre>
<p>Inside, <code>func_name()</code> will be called with <code>param1</code> and <code>param2</code>.</p>
<p>I want to crea... | 16,518 | 23,420 | 2019-04-22 12:50:41 | 2,641,911 | 16 | 2010-04-15 00:14:26 | 459,745 | 2010-04-16 16:58:06 | https://stackoverflow.com/q/2630812 | https://stackoverflow.com/a/2641911 | <p>You can get a list of functions in your script by using the grep command on your own script. In order for this approach to work, you will need to structure your functions a certain way so grep can find them. Here is a sample:</p>
<pre><code>$ cat my.sh
#!/bin/sh
function func1() # Short description
{
echo func... | <p>You can get a list of functions in your script by using the grep command on your own script. In order for this approach to work, you will need to structure your functions a certain way so grep can find them. Here is a sample:</p> <pre><code>$ cat my.sh #!/bin/sh function func1() # Short description { echo func... | 58, 390, 10327 | linux, sh, shell | <h1>Get a list of function names in a shell script</h1>
<p>I have a Bourne Shell script that has several functions in it, and allows to be called in the following way:</p>
<pre><code>my.sh <func_name> <param1> <param2>
</code></pre>
<p>Inside, <code>func_name()</code> will be called with <code>param... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,930 | bash | # Get a list of function names in a shell script
I have a Bourne Shell script that has several functions in it, and allows to be called in the following way:
```
my.sh <func_name> <param1> <param2>
```
Inside, `func_name()` will be called with `param1` and `param2`.
I want to create a `help` function that would jus... | You can get a list of functions in your script by using the grep command on your own script. In order for this approach to work, you will need to structure your functions a certain way so grep can find them. Here is a sample:
```
$ cat my.sh
#!/bin/sh
function func1() # Short description
{
echo func1 parameters: ... |
614785 | bash : how to use screen to have a term session used at home after work? | 9 | 2009-03-05 13:40:56 | <p>Everything is in the title, I would like to start a session at work and be able to get it when i'm at home.</p>
| 8,080 | 65,636 | 2010-11-02 22:04:28 | 614,828 | 16 | 2009-03-05 13:51:39 | 219 | 2009-03-05 13:51:39 | https://stackoverflow.com/q/614785 | https://stackoverflow.com/a/614828 | <p>While at work, start a screen session:</p>
<pre><code>$ screen
</code></pre>
<p>Do whatever work you want on the terminal session, and when you are leaving to go home, <strong>detach</strong> the session by pressing <strong>CTRL-A</strong> then <strong>D</strong>. Your screen session will then disappear. To re-act... | <p>While at work, start a screen session:</p> <pre><code>$ screen </code></pre> <p>Do whatever work you want on the terminal session, and when you are leaving to go home, <strong>detach</strong> the session by pressing <strong>CTRL-A</strong> then <strong>D</strong>. Your screen session will then disappear. To re-act... | 387, 5024 | bash, gnu-screen | <h1>bash : how to use screen to have a term session used at home after work?</h1>
<p>Everything is in the title, I would like to start a session at work and be able to get it when i'm at home.</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,931 | bash | # bash : how to use screen to have a term session used at home after work?
Everything is in the title, I would like to start a session at work and be able to get it when i'm at home. | While at work, start a screen session:
```
$ screen
```
Do whatever work you want on the terminal session, and when you are leaving to go home, **detach** the session by pressing **CTRL-A** then **D**. Your screen session will then disappear. To re-activate it once you are home, **resume** the session with the **-r**... |
70535330 | Dynamodb local web shell does not load | 8 | 2021-12-30 18:20:42 | <p>I am running DynamoDB locally using the instructions <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.DownloadingAndRunning.html" rel="noreferrer">here</a>. To remove potential docker networking issues I am using the "Download Locally" version of the instructions. Bef... | 8,827 | 416,446 | 2024-08-04 07:17:23 | 70,722,538 | 16 | 2022-01-15 14:55:59 | 7,909,676 | 2022-01-15 14:55:59 | https://stackoverflow.com/q/70535330 | https://stackoverflow.com/a/70722538 | <p>DynamoDB Local Web Shell was deprecated with version 1.16.X and is not available any longer from 1.17.X to latest. There are no immediate plans for a new Web Shell to be introduced.</p>
<p>You can download an old version of DynamoDB Local < 1.17.X should you wish to use the Web Shell.</p>
<p><strong>Available ver... | <p>DynamoDB Local Web Shell was deprecated with version 1.16.X and is not available any longer from 1.17.X to latest. There are no immediate plans for a new Web Shell to be introduced.</p> <p>You can download an old version of DynamoDB Local < 1.17.X should you wish to use the Web Shell.</p> <p><strong>Available ver... | 390, 5996, 33388, 76578 | amazon-dynamodb, amazon-web-services, localhost, shell | <h1>Dynamodb local web shell does not load</h1>
<p>I am running DynamoDB locally using the instructions <a href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.DownloadingAndRunning.html" rel="noreferrer">here</a>. To remove potential docker networking issues I am using the "Downloa... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,932 | bash | # Dynamodb local web shell does not load
I am running DynamoDB locally using the instructions [here](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.DownloadingAndRunning.html). To remove potential docker networking issues I am using the "Download Locally" version of the instructions. Be... | DynamoDB Local Web Shell was deprecated with version 1.16.X and is not available any longer from 1.17.X to latest. There are no immediate plans for a new Web Shell to be introduced.
You can download an old version of DynamoDB Local < 1.17.X should you wish to use the Web Shell.
**Available versions:**
```
aws s3 ls ... |
65482945 | Corrupt PackageManager? Unable to find module providers (PowerShellGet) | 8 | 2020-12-28 19:24:28 | <p>This is a common error that is not solved by the common solutions I have found on the internet.</p>
<p>Unable to run Get-PsRepository, Install-Module, and related (OneGet?) commands without them throwing the "Unable to find module providers (PowerShellGet)" error. This appears to be an issue with the NuGet... | 9,954 | 9,760,060 | 2025-04-03 01:36:13 | 66,422,362 | 16 | 2021-03-01 12:42:06 | 5,064,143 | 2025-04-03 01:36:13 | https://stackoverflow.com/q/65482945 | https://stackoverflow.com/a/66422362 | <p>We encountered the same problem. Found this thread without a solution. But I dug a bit further and on the computer that had this problem we found version 1.4.7 of PackageManagement installed.
After removing this folder everything started working normally. I have not found how this thing got installed. Seems like a l... | <p>We encountered the same problem. Found this thread without a solution. But I dug a bit further and on the computer that had this problem we found version 1.4.7 of PackageManagement installed. After removing this folder everything started working normally. I have not found how this thing got installed. Seems like a l... | 64, 526, 115517 | oneget, powershell, windows | <h1>Corrupt PackageManager? Unable to find module providers (PowerShellGet)</h1>
<p>This is a common error that is not solved by the common solutions I have found on the internet.</p>
<p>Unable to run Get-PsRepository, Install-Module, and related (OneGet?) commands without them throwing the "Unable to find module ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,933 | bash | # Corrupt PackageManager? Unable to find module providers (PowerShellGet)
This is a common error that is not solved by the common solutions I have found on the internet.
Unable to run Get-PsRepository, Install-Module, and related (OneGet?) commands without them throwing the "Unable to find module providers (PowerShel... | We encountered the same problem. Found this thread without a solution. But I dug a bit further and on the computer that had this problem we found version 1.4.7 of PackageManagement installed.
After removing this folder everything started working normally. I have not found how this thing got installed. Seems like a legi... |
58211358 | How to automate either PowerShell or PowerShell Core for same machine | 8 | 2019-10-03 01:53:54 | <p>With the release of PowerShell Core, how can an application choose which version of Powershell (Powershell 5.x or PowerShell Core) is being called when it using hosting automation library (system.management.automation)? Something about the runspace that should be created? or maybe the connection info?</p>
| 7,324 | 1,228,548 | 2024-09-08 17:45:44 | 58,211,901 | 16 | 2019-10-03 03:24:36 | 45,375 | 2024-09-08 17:45:44 | https://stackoverflow.com/q/58211358 | https://stackoverflow.com/a/58211901 | <p>Here's an overview of the <strong>PowerShell SDK-related NuGet packages</strong>:<sup>Adapted from <a href="https://github.com/PowerShell/PowerShell/issues/8625#issuecomment-456515037" rel="nofollow noreferrer">here</a>.</sup></p>
<p>Note: <del><code>System.Management.Automation</code></del> is <em>not</em> recommen... | <p>Here's an overview of the <strong>PowerShell SDK-related NuGet packages</strong>:<sup>Adapted from <a href="https://github.com/PowerShell/PowerShell/issues/8625#issuecomment-456515037" rel="nofollow noreferrer">here</a>.</sup></p> <p>Note: <del><code>System.Management.Automation</code></del> is <em>not</em> recommen... | 526, 130616 | powershell, powershell-core | <h1>How to automate either PowerShell or PowerShell Core for same machine</h1>
<p>With the release of PowerShell Core, how can an application choose which version of Powershell (Powershell 5.x or PowerShell Core) is being called when it using hosting automation library (system.management.automation)? Something about th... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,934 | bash | # How to automate either PowerShell or PowerShell Core for same machine
With the release of PowerShell Core, how can an application choose which version of Powershell (Powershell 5.x or PowerShell Core) is being called when it using hosting automation library (system.management.automation)? Something about the runspac... | Here's an overview of the **PowerShell SDK-related NuGet packages**:Adapted from [here](https://github.com/PowerShell/PowerShell/issues/8625#issuecomment-456515037).
Note: ~~`System.Management.Automation`~~ is *not* recommended for direct use.
- To **create *stand-alone applications*** that **host the PowerShell runt... |
54770985 | wget recursive/mirror option not following links | 8 | 2019-02-19 16:36:08 | <p>I am trying to mirror a website at the moment. <code>wget</code> seems to do the job very well, however it's not working on some pages.</p>
<p>Looking at the <a href="https://www.gnu.org/software/wget/manual/html_node/Advanced-Usage.html" rel="nofollow noreferrer">manual</a>, the command</p>
<pre><code>wget -r https... | 6,766 | 6,565,273 | 2021-08-19 06:17:08 | 54,775,765 | 16 | 2019-02-19 22:15:46 | 952,658 | 2021-08-19 06:17:08 | https://stackoverflow.com/q/54770985 | https://stackoverflow.com/a/54775765 | <p>Your website uses a relatively less-known form of robots control, through the <code><meta></code> tag in HTML. You can read more about it <a href="https://developers.google.com/search/reference/robots_meta_tag" rel="nofollow noreferrer">here</a>. Wget will correctly adhere to the instructions in this robots di... | <p>Your website uses a relatively less-known form of robots control, through the <code><meta></code> tag in HTML. You can read more about it <a href="https://developers.google.com/search/reference/robots_meta_tag" rel="nofollow noreferrer">here</a>. Wget will correctly adhere to the instructions in this robots di... | 390, 5583 | shell, wget | <h1>wget recursive/mirror option not following links</h1>
<p>I am trying to mirror a website at the moment. <code>wget</code> seems to do the job very well, however it's not working on some pages.</p>
<p>Looking at the <a href="https://www.gnu.org/software/wget/manual/html_node/Advanced-Usage.html" rel="nofollow norefe... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,935 | bash | # wget recursive/mirror option not following links
I am trying to mirror a website at the moment. `wget` seems to do the job very well, however it's not working on some pages.
Looking at the [manual](https://www.gnu.org/software/wget/manual/html_node/Advanced-Usage.html), the command
```
wget -r https://www.gnu.org/... | Your website uses a relatively less-known form of robots control, through the `<meta>` tag in HTML. You can read more about it [here](https://developers.google.com/search/reference/robots_meta_tag). Wget will correctly adhere to the instructions in this robots directive. You can see this happening, if you look a little... |
52309625 | A parameter cannot be found that matches parameter name 'TokenKind' | 8 | 2018-09-13 08:29:08 | <p>I have beautified my Powershell according to <a href="https://coolcode.org/2018/03/16/how-to-make-your-powershell-beautiful/" rel="noreferrer">this blog</a>, but the <code>Operator</code> and <code>Parameter</code> are grey as follows:</p>
<p><a href="https://i.sstatic.net/K2xCn.png" rel="noreferrer"><img src="https... | 12,823 | 2,383,766 | 2020-12-15 06:41:52 | 52,651,577 | 16 | 2018-10-04 16:32:03 | 3,234,429 | 2020-12-15 06:41:52 | https://stackoverflow.com/q/52309625 | https://stackoverflow.com/a/52651577 | <p>They made a breaking change PSReadline V2, read about it here: <a href="https://github.com/lzybkr/PSReadLine/issues/738" rel="noreferrer">https://github.com/lzybkr/PSReadLine/issues/738</a></p>
<p>So instead of</p>
<pre><code>Set-PSReadlineOption -TokenKind String -ForegroundColor Magenta
Set-PSReadlineOption -Token... | <p>They made a breaking change PSReadline V2, read about it here: <a href="https://github.com/lzybkr/PSReadLine/issues/738" rel="noreferrer">https://github.com/lzybkr/PSReadLine/issues/738</a></p> <p>So instead of</p> <pre><code>Set-PSReadlineOption -TokenKind String -ForegroundColor Magenta Set-PSReadlineOption -Token... | 526, 117507 | powershell, psreadline | <h1>A parameter cannot be found that matches parameter name 'TokenKind'</h1>
<p>I have beautified my Powershell according to <a href="https://coolcode.org/2018/03/16/how-to-make-your-powershell-beautiful/" rel="noreferrer">this blog</a>, but the <code>Operator</code> and <code>Parameter</code> are grey as follows:</p>
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,936 | bash | # A parameter cannot be found that matches parameter name 'TokenKind'
I have beautified my Powershell according to [this blog](https://coolcode.org/2018/03/16/how-to-make-your-powershell-beautiful/), but the `Operator` and `Parameter` are grey as follows:
[![enter image description here](https://i.sstatic.net/K2xCn.p... | They made a breaking change PSReadline V2, read about it here: <https://github.com/lzybkr/PSReadLine/issues/738>
So instead of
```
Set-PSReadlineOption -TokenKind String -ForegroundColor Magenta
Set-PSReadlineOption -TokenKind Variable -ForegroundColor Cyan
```
You would do something like
```
$colors = @{}
$colors[... |
52067816 | How to get jq to print valid json after applying a filter | 8 | 2018-08-29 00:20:04 | <p>I'm working on jq filtering and output of results to output into another program that accepts a JSON payload. Consider the following example:</p>
<p>INPUT:</p>
<pre><code>My-MBP:myorg myname$ aws ec2 describe-snapshots --owner-id 12345678 | jq '.Snapshots[] | select(.Description | contains("myorg-database-b"))'
</... | 2,686 | 5,004,410 | 2018-08-29 00:48:41 | 52,067,905 | 16 | 2018-08-29 00:35:06 | 450,611 | 2018-08-29 00:48:41 | https://stackoverflow.com/q/52067816 | https://stackoverflow.com/a/52067905 | <p>You can wrap the entire jq expression into square brackets to make it collect the filter output into an array (documented in <a href="https://stedolan.github.io/jq/manual/#Arrayconstruction:[]" rel="noreferrer">Array construction section</a>):</p>
<pre><code>'[ .Snapshots[] | select(.Description | contains("myorg-d... | <p>You can wrap the entire jq expression into square brackets to make it collect the filter output into an array (documented in <a href="https://stedolan.github.io/jq/manual/#Arrayconstruction:[]" rel="noreferrer">Array construction section</a>):</p> <pre><code>'[ .Snapshots[] | select(.Description | contains("myorg-d... | 387, 390, 1508, 33388, 105170 | amazon-web-services, bash, jq, json, shell | <h1>How to get jq to print valid json after applying a filter</h1>
<p>I'm working on jq filtering and output of results to output into another program that accepts a JSON payload. Consider the following example:</p>
<p>INPUT:</p>
<pre><code>My-MBP:myorg myname$ aws ec2 describe-snapshots --owner-id 12345678 | jq '.Sn... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,937 | bash | # How to get jq to print valid json after applying a filter
I'm working on jq filtering and output of results to output into another program that accepts a JSON payload. Consider the following example:
INPUT:
```
My-MBP:myorg myname$ aws ec2 describe-snapshots --owner-id 12345678 | jq '.Snapshots[] | select(.Descrip... | You can wrap the entire jq expression into square brackets to make it collect the filter output into an array (documented in [Array construction section](https://stedolan.github.io/jq/manual/#Arrayconstruction:[])):
```
'[ .Snapshots[] | select(.Description | contains("myorg-database-b")) ]'
```
results in:
```
[
... |
47274532 | Difference between () and $() | 8 | 2017-11-13 22:20:27 | <p>What's the difference between</p>
<pre><code>Write-Host (Get-Date) # just paren
</code></pre>
<p>and</p>
<pre><code>Write-Host $(Get-Date) # dollar-paren
</code></pre>
<p>Content within the parens could be anything, just going with a simple example. Is there any difference between the two?</p>
<p>I consider mys... | 4,390 | 1,580,900 | 2017-11-14 03:15:38 | 47,277,087 | 16 | 2017-11-14 03:15:38 | 1,930,135 | 2017-11-14 03:15:38 | https://stackoverflow.com/q/47274532 | https://stackoverflow.com/a/47277087 | <p>The sub expression (<code>$(...)</code>) contains a <code>StatementBlockAst</code>. It can take <strong>any number</strong> of statements, meaning keywords (<code>if</code>, <code>foreach</code>, etc), pipelines, commands, etc. Parsing is similar to the inside of a named block like <code>begin</code>/<code>process... | <p>The sub expression (<code>$(...)</code>) contains a <code>StatementBlockAst</code>. It can take <strong>any number</strong> of statements, meaning keywords (<code>if</code>, <code>foreach</code>, etc), pipelines, commands, etc. Parsing is similar to the inside of a named block like <code>begin</code>/<code>process... | 526 | powershell | <h1>Difference between () and $()</h1>
<p>What's the difference between</p>
<pre><code>Write-Host (Get-Date) # just paren
</code></pre>
<p>and</p>
<pre><code>Write-Host $(Get-Date) # dollar-paren
</code></pre>
<p>Content within the parens could be anything, just going with a simple example. Is there any difference ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,938 | bash | # Difference between () and $()
What's the difference between
```
Write-Host (Get-Date) # just paren
```
and
```
Write-Host $(Get-Date) # dollar-paren
```
Content within the parens could be anything, just going with a simple example. Is there any difference between the two?
I consider myself reasonably experience... | The sub expression (`$(...)`) contains a `StatementBlockAst`. It can take **any number** of statements, meaning keywords (`if`, `foreach`, etc), pipelines, commands, etc. Parsing is similar to the inside of a named block like `begin`/`process`/`end`.
The paren expression (`(...)`) can contain a **single** `ExpressionA... |
46959151 | bash script complains about file name too long | 8 | 2017-10-26 16:15:52 | <p>So I have a script that does this (jq is a command line JSON processor):</p>
<pre><code>echo "Getting LB Node IDs"
echo $LB_STATUS | jq '.loadBalancer.nodes[] .id'
</code></pre>
<p>The output of the last line is:</p>
<pre><code>1
2
3
</code></pre>
<p>But when I try and assign it to an array:</p>
<pre><code>echo... | 37,018 | 1,103,655 | 2017-10-26 16:48:07 | 46,959,196 | 16 | 2017-10-26 16:17:56 | 14,122 | 2017-10-26 16:38:15 | https://stackoverflow.com/q/46959151 | https://stackoverflow.com/a/46959196 | <h3>What Went Wrong</h3>
<p><code>$variable | something</code> doesn't pass the text in <code>variable</code> as input to <code>something</code> -- instead, it runs the contents of <code>$variable</code> <strong>as a command</strong>. Presumably you wanted <code>echo "$variable" | something</code> instead (but see bel... | <h3>What Went Wrong</h3> <p><code>$variable | something</code> doesn't pass the text in <code>variable</code> as input to <code>something</code> -- instead, it runs the contents of <code>$variable</code> <strong>as a command</strong>. Presumably you wanted <code>echo "$variable" | something</code> instead (but see bel... | 387, 1508 | bash, json | <h1>bash script complains about file name too long</h1>
<p>So I have a script that does this (jq is a command line JSON processor):</p>
<pre><code>echo "Getting LB Node IDs"
echo $LB_STATUS | jq '.loadBalancer.nodes[] .id'
</code></pre>
<p>The output of the last line is:</p>
<pre><code>1
2
3
</code></pre>
<p>But wh... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,939 | bash | # bash script complains about file name too long
So I have a script that does this (jq is a command line JSON processor):
```
echo "Getting LB Node IDs"
echo $LB_STATUS | jq '.loadBalancer.nodes[] .id'
```
The output of the last line is:
```
1
2
3
```
But when I try and assign it to an array:
```
echo "Creating a... | ### What Went Wrong
`$variable | something` doesn't pass the text in `variable` as input to `something` -- instead, it runs the contents of `$variable` **as a command**. Presumably you wanted `echo "$variable" | something` instead (but see below!)
Even if that were fixed, the `array=( $(some-command) )` idiom is itse... |
46451994 | Set Value of Nested Object Property by Name in PowerShell | 8 | 2017-09-27 15:38:39 | <p>I want to set value of nested object property using PowerShell. When you are trying to set the value of the first level properties, it's quiet simple:</p>
<pre><code>$propertyName = "someProperty"
$obj.$propertyName = "someValue" # ← It works
</code></pre>
<p>For nested properties, it doesn't work:</p>
<pre><cod... | 7,700 | 3,110,834 | 2024-01-23 18:29:35 | 46,796,446 | 16 | 2017-10-17 18:04:23 | 3,110,834 | 2021-07-20 23:32:05 | https://stackoverflow.com/q/46451994 | https://stackoverflow.com/a/46796446 | <p>I created <code>SetValue</code> and <code>GetValue</code> functions to let you get and set a nested property of an object (including a json object) dynamically by name and they work perfectly!</p>
<p>They are recursive functions which resolve the complex property and get the nested property step by step by splitting... | <p>I created <code>SetValue</code> and <code>GetValue</code> functions to let you get and set a nested property of an object (including a json object) dynamically by name and they work perfectly!</p> <p>They are recursive functions which resolve the complex property and get the nested property step by step by splitting... | 526, 7705, 37256, 153947 | anonymous-types, object-graph, powershell, powershell-cmdlet | <h1>Set Value of Nested Object Property by Name in PowerShell</h1>
<p>I want to set value of nested object property using PowerShell. When you are trying to set the value of the first level properties, it's quiet simple:</p>
<pre><code>$propertyName = "someProperty"
$obj.$propertyName = "someValue" # ← It works
</cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,940 | bash | # Set Value of Nested Object Property by Name in PowerShell
I want to set value of nested object property using PowerShell. When you are trying to set the value of the first level properties, it's quiet simple:
```
$propertyName = "someProperty"
$obj.$propertyName = "someValue" # ← It works
```
For nested propertie... | I created `SetValue` and `GetValue` functions to let you get and set a nested property of an object (including a json object) dynamically by name and they work perfectly!
They are recursive functions which resolve the complex property and get the nested property step by step by splitting the nested property name.
**G... |
46154845 | How to add a custom property to a PowerShell array? | 8 | 2017-09-11 11:39:16 | <p>Say I have a PowerShell array <code>$Sessions = @()</code> which I am going to fill with PSCustomObjects. How can I add a custom property to the array itself? E.g. so I can have <code>$Sessions.Count</code> which is built-in and <code>$Sessions.Active</code> which I want to set to the active session count.</p>
<p>I... | 29,269 | 4,161,937 | 2017-09-11 13:00:11 | 46,156,359 | 16 | 2017-09-11 12:59:06 | 3,829,407 | 2017-09-11 12:59:06 | https://stackoverflow.com/q/46154845 | https://stackoverflow.com/a/46156359 | <p>The answer to your question as stated would be to just use <code>Add-Member</code> on the array object.</p>
<pre><code>Add-Member -InputObject $sessions -MemberType NoteProperty -Name "State" -Value "Fabulous"
</code></pre>
<p>Adding a property to each element <em>after you created the object</em... | <p>The answer to your question as stated would be to just use <code>Add-Member</code> on the array object.</p> <pre><code>Add-Member -InputObject $sessions -MemberType NoteProperty -Name "State" -Value "Fabulous" </code></pre> <p>Adding a property to each element <em>after you created the object</em... | 114, 526, 4898, 26280 | arrays, powershell, properties, pscustomobject | <h1>How to add a custom property to a PowerShell array?</h1>
<p>Say I have a PowerShell array <code>$Sessions = @()</code> which I am going to fill with PSCustomObjects. How can I add a custom property to the array itself? E.g. so I can have <code>$Sessions.Count</code> which is built-in and <code>$Sessions.Active</cod... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,941 | bash | # How to add a custom property to a PowerShell array?
Say I have a PowerShell array `$Sessions = @()` which I am going to fill with PSCustomObjects. How can I add a custom property to the array itself? E.g. so I can have `$Sessions.Count` which is built-in and `$Sessions.Active` which I want to set to the active sessi... | The answer to your question as stated would be to just use `Add-Member` on the array object.
```
Add-Member -InputObject $sessions -MemberType NoteProperty -Name "State" -Value "Fabulous"
```
Adding a property to each element *after you created the object* is similar.
```
$sessions | ForEach-Object{
$_ | Add-Mem... |
43871278 | How to delete all subdirectories with a specific name | 8 | 2017-05-09 13:31:07 | <p>I'm working on Linux and there is a folder, which contains lots of sub directories. I need to delete all of sub directories which have a same name. For example,<br></p>
<pre><code>dir
|---subdir1
|---subdir2
| |-----subdir1
|---file
</code></pre>
<p>I want to delete all of <code>subdir1</code>. Here is my ... | 10,509 | 3,305,546 | 2017-05-09 18:16:51 | 43,871,456 | 16 | 2017-05-09 13:40:02 | 6,372,809 | 2017-05-09 14:01:28 | https://stackoverflow.com/q/43871278 | https://stackoverflow.com/a/43871456 | <p>If <code>find</code> finds the correct directories at all, these should work:</p>
<pre><code>find dir -type d -name "subdir1" -exec echo rm -rf {} \;
</code></pre>
<p>or</p>
<pre><code>find dir -type d -name "subdir1" -exec echo rm -rf {} +
</code></pre>
<p>(the <code>echo</code> is there for verifying the comm... | <p>If <code>find</code> finds the correct directories at all, these should work:</p> <pre><code>find dir -type d -name "subdir1" -exec echo rm -rf {} \; </code></pre> <p>or</p> <pre><code>find dir -type d -name "subdir1" -exec echo rm -rf {} + </code></pre> <p>(the <code>echo</code> is there for verifying the comm... | 58, 387, 390, 100470 | bash, gnu-findutils, linux, shell | <h1>How to delete all subdirectories with a specific name</h1>
<p>I'm working on Linux and there is a folder, which contains lots of sub directories. I need to delete all of sub directories which have a same name. For example,<br></p>
<pre><code>dir
|---subdir1
|---subdir2
| |-----subdir1
|---file
</code></pre... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,942 | bash | # How to delete all subdirectories with a specific name
I'm working on Linux and there is a folder, which contains lots of sub directories. I need to delete all of sub directories which have a same name. For example,
```
dir
|---subdir1
|---subdir2
| |-----subdir1
|---file
```
I want to delete all of `subdir... | If `find` finds the correct directories at all, these should work:
```
find dir -type d -name "subdir1" -exec echo rm -rf {} \;
```
or
```
find dir -type d -name "subdir1" -exec echo rm -rf {} +
```
(the `echo` is there for verifying the command hits the files you wanted, remove it to actually run the `rm` and remo... |
43794270 | Disable or unset specific bash completion | 8 | 2017-05-04 23:31:07 | <p>I invoked</p>
<pre><code>complete -o default -F _foo foo
</code></pre>
<p>To enable bash auto-complete for the command <code>foo</code>. Now I want this to go away, while retaining any other completions that bash may know. How do I do this? I want a </p>
<pre><code>complete --remove foo
</code></pre>
| 5,884 | 476,444 | 2017-05-04 23:50:35 | 43,794,295 | 16 | 2017-05-04 23:33:11 | 1,255,289 | 2017-05-04 23:50:35 | https://stackoverflow.com/q/43794270 | https://stackoverflow.com/a/43794295 | <p><code>help complete</code> will tell you:</p>
<pre class="lang-none prettyprint-override"><code>-r remove a completion specification for each NAME, or, if no
NAMEs are supplied, all completion specifications
</code></pre>
| <p><code>help complete</code> will tell you:</p> <pre class="lang-none prettyprint-override"><code>-r remove a completion specification for each NAME, or, if no NAMEs are supplied, all completion specifications </code></pre> | 387, 4682 | autocomplete, bash | <h1>Disable or unset specific bash completion</h1>
<p>I invoked</p>
<pre><code>complete -o default -F _foo foo
</code></pre>
<p>To enable bash auto-complete for the command <code>foo</code>. Now I want this to go away, while retaining any other completions that bash may know. How do I do this? I want a </p>
<pre><co... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,943 | bash | # Disable or unset specific bash completion
I invoked
```
complete -o default -F _foo foo
```
To enable bash auto-complete for the command `foo`. Now I want this to go away, while retaining any other completions that bash may know. How do I do this? I want a
```
complete --remove foo
``` | `help complete` will tell you:
```
-r remove a completion specification for each NAME, or, if no
NAMEs are supplied, all completion specifications
``` |
41997509 | Warning: Could not start program with arguments. Warning: Exec format error | 8 | 2017-02-02 08:35:23 | <p>Hello I'm trying to make a Shell script in opensuse to create MySqlUsers but when I try to run it I get this error: </p>
<blockquote>
<p>Warning: Could not start program '/home/thomas/Scripts/MySqlCreateUser.sh' with arguments '/home/thomas/Scripts/MySqlCreateUser.sh'.</p>
<p>Warning: Exec format error</p>
<... | 11,039 | 7,504,798 | 2024-09-12 21:10:25 | 41,997,825 | 16 | 2017-02-02 08:53:27 | 1,072,229 | 2017-02-02 08:53:27 | https://stackoverflow.com/q/41997509 | https://stackoverflow.com/a/41997825 | <p>I'm guessing you are trying to start this from a KDE menu item.</p>
<p>You need to make sure that:</p>
<ol>
<li>Your script has a proper shebang on the first line (like <code>#!/bin/bash</code>)</li>
<li>Your script is executable (<code>chmod +x /home/thomas/Scripts/MySqlCreateUser.sh</code>)</li>
</ol>
| <p>I'm guessing you are trying to start this from a KDE menu item.</p> <p>You need to make sure that:</p> <ol> <li>Your script has a proper shebang on the first line (like <code>#!/bin/bash</code>)</li> <li>Your script is executable (<code>chmod +x /home/thomas/Scripts/MySqlCreateUser.sh</code>)</li> </ol> | 58, 387, 390, 10327, 126216 | bash, kde-plasma, linux, sh, shell | <h1>Warning: Could not start program with arguments. Warning: Exec format error</h1>
<p>Hello I'm trying to make a Shell script in opensuse to create MySqlUsers but when I try to run it I get this error: </p>
<blockquote>
<p>Warning: Could not start program '/home/thomas/Scripts/MySqlCreateUser.sh' with arguments '/... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,944 | bash | # Warning: Could not start program with arguments. Warning: Exec format error
Hello I'm trying to make a Shell script in opensuse to create MySqlUsers but when I try to run it I get this error:
> Warning: Could not start program '/home/thomas/Scripts/MySqlCreateUser.sh' with arguments '/home/thomas/Scripts/MySqlCreat... | I'm guessing you are trying to start this from a KDE menu item.
You need to make sure that:
1. Your script has a proper shebang on the first line (like `#!/bin/bash`)
2. Your script is executable (`chmod +x /home/thomas/Scripts/MySqlCreateUser.sh`) |
41720114 | n days ago from a given date on command line | 8 | 2017-01-18 12:59:58 | <p>For example, given date is '2016-12-31', n is 2, expected output is '2016-12-29'. <br><br>
I survey <code>date</code> command and get n days ago from current date is easy: <br>
<code>date -d "2 days ago" +%Y-%m-%d</code></p>
| 13,503 | 508,305 | 2018-11-02 15:09:17 | 41,720,242 | 16 | 2017-01-18 13:06:28 | 1,983,854 | 2017-01-18 13:06:28 | https://stackoverflow.com/q/41720114 | https://stackoverflow.com/a/41720242 | <p>Just mention the date you want to extract two days from:</p>
<pre><code>$ date -d "2016-12-31 2 days ago" +%Y-%m-%d
2016-12-29
</code></pre>
<p>Or a bit better grammatically-wise:</p>
<pre><code>$ date -d "2016-12-31 -2 days" +%Y-%m-%d
2016-12-29
</code></pre>
| <p>Just mention the date you want to extract two days from:</p> <pre><code>$ date -d "2016-12-31 2 days ago" +%Y-%m-%d 2016-12-29 </code></pre> <p>Or a bit better grammatically-wise:</p> <pre><code>$ date -d "2016-12-31 -2 days" +%Y-%m-%d 2016-12-29 </code></pre> | 34, 58, 390, 4072, 5002 | date, gnu, linux, shell, unix | <h1>n days ago from a given date on command line</h1>
<p>For example, given date is '2016-12-31', n is 2, expected output is '2016-12-29'. <br><br>
I survey <code>date</code> command and get n days ago from current date is easy: <br>
<code>date -d "2 days ago" +%Y-%m-%d</code></p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,945 | bash | # n days ago from a given date on command line
For example, given date is '2016-12-31', n is 2, expected output is '2016-12-29'.
I survey `date` command and get n days ago from current date is easy:
`date -d "2 days ago" +%Y-%m-%d` | Just mention the date you want to extract two days from:
```
$ date -d "2016-12-31 2 days ago" +%Y-%m-%d
2016-12-29
```
Or a bit better grammatically-wise:
```
$ date -d "2016-12-31 -2 days" +%Y-%m-%d
2016-12-29
``` |
40935058 | Why can't I use predefined variables in class methods? | 8 | 2016-12-02 14:56:24 | <p>I tried to use predefined variables like $PSVersionTable or $PSScriptRoot in a class method. They failed with the error message </p>
<blockquote>
<p>Variable is not assigned in the method.</p>
</blockquote>
<p>Example:</p>
<pre><code>Class Foo {
[String]$Version
GetVersion() {
If ($PSVersionTab... | 4,863 | 5,222,635 | 2016-12-02 16:16:05 | 40,936,584 | 16 | 2016-12-02 16:16:05 | 311,712 | 2016-12-02 16:16:05 | https://stackoverflow.com/q/40935058 | https://stackoverflow.com/a/40936584 | <pre><code>Class Foo {
[String] $Version
GetVersion() {
if ($global:PSVersionTable) {
$this.Version = $global:PSVersionTable.PSVersion
}
}
}
$foo = [Foo]::new()
$foo.GetVersion()
Write-Host $foo.Version
</code></pre>
<p>For the "why" part, I guess this is related to scope. I... | <pre><code>Class Foo { [String] $Version GetVersion() { if ($global:PSVersionTable) { $this.Version = $global:PSVersionTable.PSVersion } } } $foo = [Foo]::new() $foo.GetVersion() Write-Host $foo.Version </code></pre> <p>For the "why" part, I guess this is related to scope. I... | 526, 108010 | powershell, powershell-5.0 | <h1>Why can't I use predefined variables in class methods?</h1>
<p>I tried to use predefined variables like $PSVersionTable or $PSScriptRoot in a class method. They failed with the error message </p>
<blockquote>
<p>Variable is not assigned in the method.</p>
</blockquote>
<p>Example:</p>
<pre><code>Class Foo {
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,946 | bash | # Why can't I use predefined variables in class methods?
I tried to use predefined variables like $PSVersionTable or $PSScriptRoot in a class method. They failed with the error message
> Variable is not assigned in the method.
Example:
```
Class Foo {
[String]$Version
GetVersion() {
If ($PSVersionT... | ```
Class Foo {
[String] $Version
GetVersion() {
if ($global:PSVersionTable) {
$this.Version = $global:PSVersionTable.PSVersion
}
}
}
$foo = [Foo]::new()
$foo.GetVersion()
Write-Host $foo.Version
```
For the "why" part, I guess this is related to scope. In your class you hav... |
40565331 | npm view get more items | 8 | 2016-11-12 17:00:04 | <p>I am using the following command to look up versions of the packages that I have.</p>
<p><code>npm view <packagename> versions</code></p>
<p>The result that I get back is as follows</p>
<pre><code> '2.4.0-2016-10-06-6743',
'2.4.0-2016-10-07-6750',
'2.4.0-2016-10-07-6751',
'2.4.0-2016-10-07-6754',
'... | 2,519 | 4,412,482 | 2016-11-12 17:25:49 | 40,565,535 | 16 | 2016-11-12 17:20:34 | 459,517 | 2016-11-12 17:20:34 | https://stackoverflow.com/q/40565331 | https://stackoverflow.com/a/40565535 | <p>try adding <code>--json</code> to the command</p>
<pre><code>npm view <packagename> versions --json
</code></pre>
<blockquote>
<p>This is a change to the behavior of util.inspect() in newer versions of Node.js (I'm guessing – this isn't behavior that the npm CLI team changed). If you want to get the full l... | <p>try adding <code>--json</code> to the command</p> <pre><code>npm view <packagename> versions --json </code></pre> <blockquote> <p>This is a change to the behavior of util.inspect() in newer versions of Node.js (I'm guessing – this isn't behavior that the npm CLI team changed). If you want to get the full l... | 2631, 46426, 61387, 61874 | cmd, git-bash, node.js, npm | <h1>npm view get more items</h1>
<p>I am using the following command to look up versions of the packages that I have.</p>
<p><code>npm view <packagename> versions</code></p>
<p>The result that I get back is as follows</p>
<pre><code> '2.4.0-2016-10-06-6743',
'2.4.0-2016-10-07-6750',
'2.4.0-2016-10-07-6751... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,947 | bash | # npm view get more items
I am using the following command to look up versions of the packages that I have.
`npm view <packagename> versions`
The result that I get back is as follows
```
'2.4.0-2016-10-06-6743',
'2.4.0-2016-10-07-6750',
'2.4.0-2016-10-07-6751',
'2.4.0-2016-10-07-6754',
'2.4.0-2016-10-07-6... | try adding `--json` to the command
```
npm view <packagename> versions --json
```
> This is a change to the behavior of util.inspect() in newer versions of Node.js (I'm guessing – this isn't behavior that the npm CLI team changed). If you want to get the full list, and also want to ensure that it's parseable, just ad... |
38888149 | PowerShell Get-ChildItem how to catch Exception | 8 | 2016-08-11 05:47:44 | <p>Im currently programming a visual error GUI that catches any exception while processing and give's the user an "easy to understand" error message. But it seems that I can't catch any exceptions while using the <code>Get-ChildItem</code> cmdlet. Do I have to use a different method than try / catch? </p>
<p>Here's th... | 20,153 | 5,723,412 | 2016-08-11 05:52:33 | 38,888,207 | 16 | 2016-08-11 05:51:25 | 1,163,423 | 2016-08-11 05:51:25 | https://stackoverflow.com/q/38888149 | https://stackoverflow.com/a/38888207 | <p>Add <code>-ErrorAction Stop</code> to the <code>Get-ChildItem</code> cmdlet:</p>
<pre><code>if ($checkBox1.Checked) {
Try{
Get-ChildItem -path "K:\adm_spm_logdb_data\ADP\DATA" -ErrorAction Stop |Rename-Item -newname { $($_.BaseName -split '_provide')[0] + $_.Extension };
}catch [System.Except... | <p>Add <code>-ErrorAction Stop</code> to the <code>Get-ChildItem</code> cmdlet:</p> <pre><code>if ($checkBox1.Checked) { Try{ Get-ChildItem -path "K:\adm_spm_logdb_data\ADP\DATA" -ErrorAction Stop |Rename-Item -newname { $($_.BaseName -split '_provide')[0] + $_.Extension }; }catch [System.Except... | 526, 5142, 7436 | exception, powershell, try-catch | <h1>PowerShell Get-ChildItem how to catch Exception</h1>
<p>Im currently programming a visual error GUI that catches any exception while processing and give's the user an "easy to understand" error message. But it seems that I can't catch any exceptions while using the <code>Get-ChildItem</code> cmdlet. Do I have to us... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,948 | bash | # PowerShell Get-ChildItem how to catch Exception
Im currently programming a visual error GUI that catches any exception while processing and give's the user an "easy to understand" error message. But it seems that I can't catch any exceptions while using the `Get-ChildItem` cmdlet. Do I have to use a different method... | Add `-ErrorAction Stop` to the `Get-ChildItem` cmdlet:
```
if ($checkBox1.Checked) {
Try{
Get-ChildItem -path "K:\adm_spm_logdb_data\ADP\DATA" -ErrorAction Stop |Rename-Item -newname { $($_.BaseName -split '_provide')[0] + $_.Extension };
}catch [System.Exception]{
$listBox1.Items.Add("A... |
37582981 | How do you create a timespan from milliseconds in powershell? | 8 | 2016-06-02 04:58:11 | <p>New-Timespan takes no "MilliSeconds" parameter, how do you create a TimeSpan from milliseconds?</p>
| 11,446 | 240,040 | 2022-11-18 01:28:54 | 37,583,058 | 16 | 2016-06-02 05:04:11 | 150,605 | 2022-11-17 23:54:53 | https://stackoverflow.com/q/37582981 | https://stackoverflow.com/a/37583058 | <p>As of <a href="https://learn.microsoft.com/powershell/scripting/whats-new/what-s-new-in-powershell-73" rel="nofollow noreferrer">PowerShell v7.3</a> there is a <a href="https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/new-timespan#-milliseconds" rel="nofollow noreferrer"><code>-Milliseconds... | <p>As of <a href="https://learn.microsoft.com/powershell/scripting/whats-new/what-s-new-in-powershell-73" rel="nofollow noreferrer">PowerShell v7.3</a> there is a <a href="https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/new-timespan#-milliseconds" rel="nofollow noreferrer"><code>-Milliseconds... | 526 | powershell | <h1>How do you create a timespan from milliseconds in powershell?</h1>
<p>New-Timespan takes no "MilliSeconds" parameter, how do you create a TimeSpan from milliseconds?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,949 | bash | # How do you create a timespan from milliseconds in powershell?
New-Timespan takes no "MilliSeconds" parameter, how do you create a TimeSpan from milliseconds? | As of [PowerShell v7.3](https://learn.microsoft.com/powershell/scripting/whats-new/what-s-new-in-powershell-73) there is a [`-Milliseconds` parameter](https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/new-timespan#-milliseconds) of `New-TimeSpan`...
```
PS> New-TimeSpan -Milliseconds 10
Days ... |
21580750 | Disconnect and reconnect ttyUSB0 programmatically in Linux | 8 | 2014-02-05 15:01:36 | <p>Trying to solve <a href="https://stackoverflow.com/questions/21525654/linux-termios-how-to-handle-negative-result-of-select">this problem</a> (ttyUSB0 that works properly than stop working after about 1hr)I'm thinking on if disconnecting and reconnecting the usb device could be a good fix.</p>
<p>So, it is possibil... | 27,955 | 1,215,739 | 2019-08-27 15:27:59 | 25,121,189 | 16 | 2014-08-04 14:36:08 | 102,937 | 2014-08-04 14:36:08 | https://stackoverflow.com/q/21580750 | https://stackoverflow.com/a/25121189 | <p>This is the solution:</p>
<ul>
<li><p>Find the identity of your usb device.</p>
<pre><code># tree /sys/bus/usb/drivers/cp210x/
/sys/bus/usb/drivers/cp210x/
|-- 1-1:1.1 -> ../../../../devices/platform/omap/musb-ti81xx/musb-hdrc.1/usb1/1-1/1-1:1.1
|-- bind
|-- module -> ../../../../module/cp210x
|-- remove_id
... | <p>This is the solution:</p> <ul> <li><p>Find the identity of your usb device.</p> <pre><code># tree /sys/bus/usb/drivers/cp210x/ /sys/bus/usb/drivers/cp210x/ |-- 1-1:1.1 -> ../../../../devices/platform/omap/musb-ti81xx/musb-hdrc.1/usb1/1-1/1-1:1.1 |-- bind |-- module -> ../../../../module/cp210x |-- remove_id ... | 58, 387, 3716, 17165 | bash, linux, serial-port, tty | <h1>Disconnect and reconnect ttyUSB0 programmatically in Linux</h1>
<p>Trying to solve <a href="https://stackoverflow.com/questions/21525654/linux-termios-how-to-handle-negative-result-of-select">this problem</a> (ttyUSB0 that works properly than stop working after about 1hr)I'm thinking on if disconnecting and reconne... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,950 | bash | # Disconnect and reconnect ttyUSB0 programmatically in Linux
Trying to solve [this problem](https://stackoverflow.com/questions/21525654/linux-termios-how-to-handle-negative-result-of-select) (ttyUSB0 that works properly than stop working after about 1hr)I'm thinking on if disconnecting and reconnecting the usb device... | This is the solution:
- Find the identity of your usb device.
```
# tree /sys/bus/usb/drivers/cp210x/
/sys/bus/usb/drivers/cp210x/
|-- 1-1:1.1 -> ../../../../devices/platform/omap/musb-ti81xx/musb-hdrc.1/usb1/1-1/1-1:1.1
|-- bind
|-- module -> ../../../../module/cp210x
|-- remove_id
|-- uevent
-- u... |
23630501 | How to: Progress bar in bash | 8 | 2014-05-13 11:51:42 | <p>I want to show a progress bar during a bash operation in a specific format something similar to the following:</p>
<pre><code>[###########](40%)
</code></pre>
<p>after update it should become </p>
<pre><code>[###############](50%)
</code></pre>
<p>and then similarly reach upto <code>100%</code></p>
<p>Is there ... | 16,535 | 1,049,096 | 2023-03-02 23:10:53 | 23,634,080 | 16 | 2014-05-13 14:28:11 | 1,983,854 | 2017-09-06 06:11:53 | https://stackoverflow.com/q/23630501 | https://stackoverflow.com/a/23634080 | <p>Let's use <code>echo -n '...' $'\r'</code> to print a carriage return:</p>
<pre><code>for ((k = 0; k <= 10 ; k++))
do
echo -n "[ "
for ((i = 0 ; i <= k; i++)); do echo -n "###"; done
for ((j = i ; j <= 10 ; j++)); do echo -n " "; done
v=$((k * 10))
echo -n " ] "
echo -n "$v %" $'\... | <p>Let's use <code>echo -n '...' $'\r'</code> to print a carriage return:</p> <pre><code>for ((k = 0; k <= 10 ; k++)) do echo -n "[ " for ((i = 0 ; i <= k; i++)); do echo -n "###"; done for ((j = i ; j <= 10 ; j++)); do echo -n " "; done v=$((k * 10)) echo -n " ] " echo -n "$v %" $'\... | 58, 387 | bash, linux | <h1>How to: Progress bar in bash</h1>
<p>I want to show a progress bar during a bash operation in a specific format something similar to the following:</p>
<pre><code>[###########](40%)
</code></pre>
<p>after update it should become </p>
<pre><code>[###############](50%)
</code></pre>
<p>and then similarly reach up... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,951 | bash | # How to: Progress bar in bash
I want to show a progress bar during a bash operation in a specific format something similar to the following:
```
[###########](40%)
```
after update it should become
```
[###############](50%)
```
and then similarly reach upto `100%`
Is there any way to achieve this
I wrote the f... | Let's use `echo -n '...' $'\r'` to print a carriage return:
```
for ((k = 0; k <= 10 ; k++))
do
echo -n "[ "
for ((i = 0 ; i <= k; i++)); do echo -n "###"; done
for ((j = i ; j <= 10 ; j++)); do echo -n " "; done
v=$((k * 10))
echo -n " ] "
echo -n "$v %" $'\r'
sleep 0.05
done
echo
```
I... |
23415794 | How to avoid a shell script exiting on failure for particular commands | 8 | 2014-05-01 20:12:38 | <p>The following script runs with the <code>-e</code> option, so it will exit if any of the commands in it fail:</p>
<pre><code>#!/bin/sh -e
command1 #script should fail if command1 fails
command2 #script should NOT fail if command2 fails
command3 #script should fail if command3 fails
</code></pre>
<p>How can I make ... | 7,326 | 2,748,513 | 2018-04-25 19:31:19 | 23,415,817 | 16 | 2014-05-01 20:14:05 | 68,587 | 2014-05-01 20:14:05 | https://stackoverflow.com/q/23415794 | https://stackoverflow.com/a/23415817 | <pre><code>command1
command2 || true
command3
</code></pre>
| <pre><code>command1 command2 || true command3 </code></pre> | 390, 10327 | sh, shell | <h1>How to avoid a shell script exiting on failure for particular commands</h1>
<p>The following script runs with the <code>-e</code> option, so it will exit if any of the commands in it fail:</p>
<pre><code>#!/bin/sh -e
command1 #script should fail if command1 fails
command2 #script should NOT fail if command2 fails
... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,952 | bash | # How to avoid a shell script exiting on failure for particular commands
The following script runs with the `-e` option, so it will exit if any of the commands in it fail:
```
#!/bin/sh -e
command1 #script should fail if command1 fails
command2 #script should NOT fail if command2 fails
command3 #script should fail if... | ```
command1
command2 || true
command3
``` |
22537699 | Cannot use alias while executing a command via SSH | 8 | 2014-03-20 15:29:27 | <p>I commented out this line in .bashrc:</p>
<pre><code># [ -z "$PS1" ] && return
</code></pre>
<p>and now the alias gets read, but I still cannot execute it... :/</p>
<p>We can ask the server if the alias has been defined:</p>
<pre><code>$ ssh server "cd /tmp && alias backup_tb"
alias backup_tb='pg... | 9,168 | 458,177 | 2017-05-23 12:03:55 | 22,540,192 | 16 | 2014-03-20 17:03:59 | 91,813 | 2014-03-20 19:14:32 | https://stackoverflow.com/q/22537699 | https://stackoverflow.com/a/22540192 | <p>Quoted from the man page of <code>bash</code>: <em>Aliases are not expanded when the shell is not interactive, unless the expand_aliases shell option is set using shopt ...</em></p>
<p>So the simplest way IMO is to put the following lines at the top of your <code>/home/<user>/.bashrc</code> file:</p>
<pre><c... | <p>Quoted from the man page of <code>bash</code>: <em>Aliases are not expanded when the shell is not interactive, unless the expand_aliases shell option is set using shopt ...</em></p> <p>So the simplest way IMO is to put the following lines at the top of your <code>/home/<user>/.bashrc</code> file:</p> <pre><c... | 386, 387 | bash, ssh | <h1>Cannot use alias while executing a command via SSH</h1>
<p>I commented out this line in .bashrc:</p>
<pre><code># [ -z "$PS1" ] && return
</code></pre>
<p>and now the alias gets read, but I still cannot execute it... :/</p>
<p>We can ask the server if the alias has been defined:</p>
<pre><code>$ ssh ser... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,953 | bash | # Cannot use alias while executing a command via SSH
I commented out this line in .bashrc:
```
# [ -z "$PS1" ] && return
```
and now the alias gets read, but I still cannot execute it... :/
We can ask the server if the alias has been defined:
```
$ ssh server "cd /tmp && alias backup_tb"
alias backup_tb='pg_dump -... | Quoted from the man page of `bash`: *Aliases are not expanded when the shell is not interactive, unless the expand_aliases shell option is set using shopt ...*
So the simplest way IMO is to put the following lines at the top of your `/home/<user>/.bashrc` file:
```
# comment out the original line
# [ -z "$PS1" ] && r... |
19880246 | Move only files recursively from multiple directories into one directory with mv | 8 | 2013-11-09 18:04:20 | <p>I currently have ~40k RAW images that are in a nested directory structure. (Some folders have as many as 100 subfolders filled with files.) I would like to move them all into one master directory, with no subfolders. How could this be accomplished using <code>mv</code>? I know the <code>-r</code> switch will copy re... | 11,895 | 1,067,257 | 2014-12-01 06:59:40 | 19,881,331 | 16 | 2013-11-09 18:12:09 | 1,815,797 | 2014-12-01 06:59:40 | https://stackoverflow.com/q/19880246 | https://stackoverflow.com/a/19881331 | <p>If your photos are in <code>/path/to/photos/</code> and its subdirectories, and you want to move then in <code>/path/to/master/</code>, and you want to select them by extension <code>.jpg</code>, <code>.JPG</code>, <code>.png</code>, <code>.PNG</code>, etc.:</p>
<pre><code>find /path/to/photos \( -iname '*.jpg' -o ... | <p>If your photos are in <code>/path/to/photos/</code> and its subdirectories, and you want to move then in <code>/path/to/master/</code>, and you want to select them by extension <code>.jpg</code>, <code>.JPG</code>, <code>.png</code>, <code>.PNG</code>, etc.:</p> <pre><code>find /path/to/photos \( -iname '*.jpg' -o ... | 34, 218, 387, 4072, 12668 | bash, directory, gnu, mv, unix | <h1>Move only files recursively from multiple directories into one directory with mv</h1>
<p>I currently have ~40k RAW images that are in a nested directory structure. (Some folders have as many as 100 subfolders filled with files.) I would like to move them all into one master directory, with no subfolders. How could ... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,954 | bash | # Move only files recursively from multiple directories into one directory with mv
I currently have ~40k RAW images that are in a nested directory structure. (Some folders have as many as 100 subfolders filled with files.) I would like to move them all into one master directory, with no subfolders. How could this be a... | If your photos are in `/path/to/photos/` and its subdirectories, and you want to move then in `/path/to/master/`, and you want to select them by extension `.jpg`, `.JPG`, `.png`, `.PNG`, etc.:
```
find /path/to/photos \( -iname '*.jpg' -o -iname '*.png' \) -type f -exec mv -nv -t '/path/to/master' -- {} +
```
If you ... |
18859158 | Powershell - Get Data of Registry Value Saved to a Variable | 8 | 2013-09-17 20:19:24 | <p>I need to save a single data item in a registry key to a variable. I've tried the following without any luck:</p>
<pre><code>$dxVersion = (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\DirectX").GetValue("Version",$null)
</code></pre>
<p>I want JUST the version number saved to the variable, nothing else. Not the name... | 32,369 | 2,784,539 | 2013-09-17 20:29:11 | 18,859,213 | 16 | 2013-09-17 20:22:37 | 775,544 | 2013-09-17 20:29:11 | https://stackoverflow.com/q/18859158 | https://stackoverflow.com/a/18859213 | <p>You almost had it. Try:</p>
<pre><code>$dxVersion = (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\DirectX").Version
</code></pre>
<p><a href="http://technet.microsoft.com/en-us/library/hh849851.aspx">Get-ItemProperty</a> returns a PSCustomObject with a number of properties -- Version among them. This sort of dotted ... | <p>You almost had it. Try:</p> <pre><code>$dxVersion = (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\DirectX").Version </code></pre> <p><a href="http://technet.microsoft.com/en-us/library/hh849851.aspx">Get-ItemProperty</a> returns a PSCustomObject with a number of properties -- Version among them. This sort of dotted ... | 526 | powershell | <h1>Powershell - Get Data of Registry Value Saved to a Variable</h1>
<p>I need to save a single data item in a registry key to a variable. I've tried the following without any luck:</p>
<pre><code>$dxVersion = (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\DirectX").GetValue("Version",$null)
</code></pre>
<p>I want JUST... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,955 | bash | # Powershell - Get Data of Registry Value Saved to a Variable
I need to save a single data item in a registry key to a variable. I've tried the following without any luck:
```
$dxVersion = (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\DirectX").GetValue("Version",$null)
```
I want JUST the version number saved to the ... | You almost had it. Try:
```
$dxVersion = (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\DirectX").Version
```
[Get-ItemProperty](http://technet.microsoft.com/en-us/library/hh849851.aspx) returns a PSCustomObject with a number of properties -- Version among them. This sort of dotted notation as I used above allows you to... |
18273766 | How can I grep in a loop? | 8 | 2013-08-16 12:51:17 | <p>I have a file containing text in separate lines. </p>
<pre><code>text1
text2
text3
textN
</code></pre>
<p>I have a directory with many files. I want to grep for each line in the of this specific directory. What is an easy way to do this?</p>
| 48,385 | 1,197,249 | 2014-03-18 20:39:25 | 18,273,817 | 16 | 2013-08-16 12:53:50 | 1,983,854 | 2014-03-18 20:39:25 | https://stackoverflow.com/q/18273766 | https://stackoverflow.com/a/18273817 | <p>There is no need to loop, you can do use <code>grep</code> with the <code>-f</code> option to get patterns from a file:</p>
<pre><code>grep -f pattern_file files*
</code></pre>
<p>From <code>man grep</code>:</p>
<blockquote>
<p><strong>-f FILE, --file=FILE</strong></p>
<p>Obtain patterns from FILE, one per... | <p>There is no need to loop, you can do use <code>grep</code> with the <code>-f</code> option to get patterns from a file:</p> <pre><code>grep -f pattern_file files* </code></pre> <p>From <code>man grep</code>:</p> <blockquote> <p><strong>-f FILE, --file=FILE</strong></p> <p>Obtain patterns from FILE, one per... | 58, 387, 390, 580, 1271 | bash, grep, linux, perl, shell | <h1>How can I grep in a loop?</h1>
<p>I have a file containing text in separate lines. </p>
<pre><code>text1
text2
text3
textN
</code></pre>
<p>I have a directory with many files. I want to grep for each line in the of this specific directory. What is an easy way to do this?</p>
| q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,956 | bash | # How can I grep in a loop?
I have a file containing text in separate lines.
```
text1
text2
text3
textN
```
I have a directory with many files. I want to grep for each line in the of this specific directory. What is an easy way to do this? | There is no need to loop, you can do use `grep` with the `-f` option to get patterns from a file:
```
grep -f pattern_file files*
```
From `man grep`:
> **-f FILE, --file=FILE**
>
> Obtain patterns from FILE, one per line. The empty file contains zero
> patterns, and therefore matches nothing. (-f is specified by PO... |
17575321 | how to pass variable from shell script to sqlplus | 8 | 2013-07-10 15:52:32 | <p>I have a shell script that calls file.sql</p>
<p>I am looking for a way to pass some parameters to my file.sql.</p>
<p>If I don't pass a variable with some value to the sql script, I will have to create multiple .sql files with SELECT statement and all that would change is few words.</p>
<p>My shell script calls ... | 140,931 | 2,084,209 | 2013-07-15 13:44:55 | 17,575,609 | 16 | 2013-07-10 16:06:16 | 266,304 | 2013-07-15 13:44:55 | https://stackoverflow.com/q/17575321 | https://stackoverflow.com/a/17575609 | <p>You appear to have a <code>heredoc</code> containing a single SQL*Plus command, though it doesn't look right as noted in the comments. You can either pass a value in the <code>heredoc</code>:</p>
<pre><code>sqlplus -S user/pass@localhost << EOF
@/opt/D2RQ/file.sql BUILDING
exit;
EOF
</code></pre>
<p>or if <c... | <p>You appear to have a <code>heredoc</code> containing a single SQL*Plus command, though it doesn't look right as noted in the comments. You can either pass a value in the <code>heredoc</code>:</p> <pre><code>sqlplus -S user/pass@localhost << EOF @/opt/D2RQ/file.sql BUILDING exit; EOF </code></pre> <p>or if <c... | 22, 390, 4480, 165558 | oracle-database, shell, sql, sqlplus | <h1>how to pass variable from shell script to sqlplus</h1>
<p>I have a shell script that calls file.sql</p>
<p>I am looking for a way to pass some parameters to my file.sql.</p>
<p>If I don't pass a variable with some value to the sql script, I will have to create multiple .sql files with SELECT statement and all tha... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,957 | bash | # how to pass variable from shell script to sqlplus
I have a shell script that calls file.sql
I am looking for a way to pass some parameters to my file.sql.
If I don't pass a variable with some value to the sql script, I will have to create multiple .sql files with SELECT statement and all that would change is few w... | You appear to have a `heredoc` containing a single SQL*Plus command, though it doesn't look right as noted in the comments. You can either pass a value in the `heredoc`:
```
sqlplus -S user/pass@localhost << EOF
@/opt/D2RQ/file.sql BUILDING
exit;
EOF
```
or if `BUILDING` is `$2` in your script:
```
sqlplus -S user/p... |
17450573 | How to actually change/set environment variables from within emacs | 8 | 2013-07-03 14:20:39 | <p>In my shell I did: <code>export BLA=foo</code> and then I do <code>echo $BLA</code> and I see <code>foo</code> as expected. I then load up emacs and do <code>M-!</code> for a shell command and do <code>echo $BLA</code> and it's set to something else, <code>bar</code>. So then I run <code>M-x setenv</code> and give i... | 10,238 | 970,171 | 2013-07-04 11:47:48 | 17,451,828 | 16 | 2013-07-03 15:16:13 | 2,381,823 | 2013-07-03 15:16:13 | https://stackoverflow.com/q/17450573 | https://stackoverflow.com/a/17451828 | <p><code>setenv</code> will modify the environment for the processes emacs launch <strong>after</strong> you set the value. Running child processes will not be affected.</p>
<p>Thus, doing a <code>(setenv "FOO" "bar")</code> and then <code>M-x shell</code> (provides you have not a running shell yet) will produce a sh... | <p><code>setenv</code> will modify the environment for the processes emacs launch <strong>after</strong> you set the value. Running child processes will not be affected.</p> <p>Thus, doing a <code>(setenv "FOO" "bar")</code> and then <code>M-x shell</code> (provides you have not a running shell yet) will produce a sh... | 58, 371, 387, 9013 | bash, emacs, environment-variables, linux | <h1>How to actually change/set environment variables from within emacs</h1>
<p>In my shell I did: <code>export BLA=foo</code> and then I do <code>echo $BLA</code> and I see <code>foo</code> as expected. I then load up emacs and do <code>M-!</code> for a shell command and do <code>echo $BLA</code> and it's set to someth... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,958 | bash | # How to actually change/set environment variables from within emacs
In my shell I did: `export BLA=foo` and then I do `echo $BLA` and I see `foo` as expected. I then load up emacs and do `M-!` for a shell command and do `echo $BLA` and it's set to something else, `bar`. So then I run `M-x setenv` and give it `BLA` an... | `setenv` will modify the environment for the processes emacs launch **after** you set the value. Running child processes will not be affected.
Thus, doing a `(setenv "FOO" "bar")` and then `M-x shell` (provides you have not a running shell yet) will produce a shell with environment variable "FOO" set to "bar". |
15992897 | How to concatenate strings formatted with printf in bash | 8 | 2013-04-13 21:03:14 | <p>I need to concatenate several strings in loop and assign result to variable:</p>
<p>Formatted string example:</p>
<pre><code>result=$(printf '| %-15s| %-25s| %-15s| %-15s| %-15s\n' $size $name $visits $inbound $outbound);
</code></pre>
<p>From my view it should work like this:</p>
<pre><code>result=''
while read... | 41,191 | 947,668 | 2013-04-14 00:16:17 | 15,993,143 | 16 | 2013-04-13 21:28:11 | 2,269,219 | 2013-04-14 00:16:17 | https://stackoverflow.com/q/15992897 | https://stackoverflow.com/a/15993143 | <p>Use double quotes around $result and all other variables that may contain blanks and other special characters if they are to be used as a single argument to a program or built-in function:</p>
<pre><code>result=$(printf '%s| %-15s| %-25s| %-15s| %-15s| %-15s\n' "$result" "$size" "$name" "$visits" "$inbound" "$outbo... | <p>Use double quotes around $result and all other variables that may contain blanks and other special characters if they are to be used as a single argument to a program or built-in function:</p> <pre><code>result=$(printf '%s| %-15s| %-25s| %-15s| %-15s| %-15s\n' "$result" "$size" "$name" "$visits" "$inbound" "$outbo... | 387, 390, 1156 | bash, printf, shell | <h1>How to concatenate strings formatted with printf in bash</h1>
<p>I need to concatenate several strings in loop and assign result to variable:</p>
<p>Formatted string example:</p>
<pre><code>result=$(printf '| %-15s| %-25s| %-15s| %-15s| %-15s\n' $size $name $visits $inbound $outbound);
</code></pre>
<p>From my v... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,959 | bash | # How to concatenate strings formatted with printf in bash
I need to concatenate several strings in loop and assign result to variable:
Formatted string example:
```
result=$(printf '| %-15s| %-25s| %-15s| %-15s| %-15s\n' $size $name $visits $inbound $outbound);
```
From my view it should work like this:
```
resul... | Use double quotes around $result and all other variables that may contain blanks and other special characters if they are to be used as a single argument to a program or built-in function:
```
result=$(printf '%s| %-15s| %-25s| %-15s| %-15s| %-15s\n' "$result" "$size" "$name" "$visits" "$inbound" "$outbound")
```
If ... |
15365307 | Why does adding spaces around bash comparison operator change the result? | 8 | 2013-03-12 15:28:23 | <p>Could someone explain why spaces around <code>==</code> change the comparison result? The following:</p>
<pre><code>if [[ 1 == 2 ]] ; then echo ok ; fi
</code></pre>
<p>prints nothing, while</p>
<pre><code>if [[ 1==2 ]] ; then echo ok ; fi
</code></pre>
<p>prints <code>ok</code></p>
| 481 | 48,461 | 2013-03-12 15:42:23 | 15,365,426 | 16 | 2013-03-12 15:33:06 | 1,126,841 | 2013-03-12 15:42:23 | https://stackoverflow.com/q/15365307 | https://stackoverflow.com/a/15365426 | <p>"1==2" is a single 4-character string, not an expression involving the <code>==</code> operator. Non-empty strings always evaluate to true in the context of the conditional expression <code>[[ ... ]]</code>. Whitespace is mandatory around the <code>==</code> operator.</p>
<p>Like everything else in <code>bash</code... | <p>"1==2" is a single 4-character string, not an expression involving the <code>==</code> operator. Non-empty strings always evaluate to true in the context of the conditional expression <code>[[ ... ]]</code>. Whitespace is mandatory around the <code>==</code> operator.</p> <p>Like everything else in <code>bash</code... | 387 | bash | <h1>Why does adding spaces around bash comparison operator change the result?</h1>
<p>Could someone explain why spaces around <code>==</code> change the comparison result? The following:</p>
<pre><code>if [[ 1 == 2 ]] ; then echo ok ; fi
</code></pre>
<p>prints nothing, while</p>
<pre><code>if [[ 1==2 ]] ; then echo... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,960 | bash | # Why does adding spaces around bash comparison operator change the result?
Could someone explain why spaces around `==` change the comparison result? The following:
```
if [[ 1 == 2 ]] ; then echo ok ; fi
```
prints nothing, while
```
if [[ 1==2 ]] ; then echo ok ; fi
```
prints `ok` | "1==2" is a single 4-character string, not an expression involving the `==` operator. Non-empty strings always evaluate to true in the context of the conditional expression `[[ ... ]]`. Whitespace is mandatory around the `==` operator.
Like everything else in `bash`, the contents of `[[ ... ]]` are simply a white-spac... |
11363342 | Change DCOM config security settings using Powershell | 8 | 2012-07-06 13:40:38 | <p>I have been given the task of writing Powershell scripts to set up a server from scratch to run one of our services as part of a web application, and one of the steps required for setting this server up is changing the DCOM config for the installed service, specifically adding accounts to the "Launch and Activation"... | 59,133 | 771,509 | 2017-09-27 21:20:50 | 11,405,503 | 16 | 2012-07-10 01:38:04 | 251,123 | 2012-07-10 01:38:04 | https://stackoverflow.com/q/11363342 | https://stackoverflow.com/a/11405503 | <p>Looks like you would do it using WMI.</p>
<p>Get an instance of: <code>Win32_DCOMApplicationSetting</code> like this:</p>
<pre><code>$dcom = Get-WMIObject -Class Win32_DCOMApplicationSetting -Filter 'Description="Something"'
</code></pre>
<p>Now you have access to the <code>SetAccessSecurityDescriptor</code> and ... | <p>Looks like you would do it using WMI.</p> <p>Get an instance of: <code>Win32_DCOMApplicationSetting</code> like this:</p> <pre><code>$dcom = Get-WMIObject -Class Win32_DCOMApplicationSetting -Filter 'Description="Something"' </code></pre> <p>Now you have access to the <code>SetAccessSecurityDescriptor</code> and ... | 526, 2194 | dcom, powershell | <h1>Change DCOM config security settings using Powershell</h1>
<p>I have been given the task of writing Powershell scripts to set up a server from scratch to run one of our services as part of a web application, and one of the steps required for setting this server up is changing the DCOM config for the installed servi... | q.PostTypeId = 1; a.PostTypeId = 2; EXISTS tag '%bash%' OR '%shell%'; a.Body contains code block; q.Score > 5; a.Score > 10 | 8,961 | bash | # Change DCOM config security settings using Powershell
I have been given the task of writing Powershell scripts to set up a server from scratch to run one of our services as part of a web application, and one of the steps required for setting this server up is changing the DCOM config for the installed service, speci... | Looks like you would do it using WMI.
Get an instance of: `Win32_DCOMApplicationSetting` like this:
```
$dcom = Get-WMIObject -Class Win32_DCOMApplicationSetting -Filter 'Description="Something"'
```
Now you have access to the `SetAccessSecurityDescriptor` and `SetLaunchSecurityDescriptor` methods.
From: <http://ms... |
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