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How can I add a help method to a shell script?
How do I check if a -h attribute has been passed into a shell script? I would like to display a help message when a user calls myscript.sh -h .
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How do I run a node.js app as a background service?
...ervice file (replacing 'myapp' with your app's name, obviously):
[Unit]
Description=My app
[Service]
ExecStart=/var/www/myapp/app.js
Restart=always
User=nobody
# Note Debian/Ubuntu uses 'nogroup', RHEL/Fedora uses 'nobody'
Group=nogroup
Environment=PATH=/usr/bin:/usr/local/bin
Environment=NODE_ENV...
How to create PDF files in Python [closed]
... one of your images. You have full freedom to mess with the figure: Adding titles, play with position, etc. Once your figure is done, save to PDF. Each call to savefig will create another page of PDF.
Example below plots 2 images side-by-side, on page 1 and page 2.
from matplotlib.backends.backend...
Force browser to clear cache
...hing like "_versionNo" to the file name for each release. For example:
script_1.0.css // This is the URL for release 1.0
script_1.1.css // This is the URL for release 1.1
script_1.2.css // etc.
Or alternatively do it after the file name:
script.css?v=1.0 // This is the URL for release 1.0
scr...
Is there a vr (vertical rule) in html?
...nnoys me that M$IE incorrectly uses alt text as a tooltip; that's what the title attribute is for!)
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How can I suppress all output from a command using Bash?
I have a Bash script that runs a program with parameters. That program outputs some status (doing this, doing that...). There isn't any option for this program to be quiet. How can I prevent the script from displaying anything?
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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
... @guns: Even if bash is installed on my box, it might not be executing the script (I might have /bin/sh symlinked to some dash-variant, as is standard on FreeBSD and Ubuntu). There's additional weirdness with Busybox, too: with standard compilation options nowadays, it parses [[ ]] but interprets it...
Command Prompt - How to add a set path only for that batch file executing?
...use setlocal:
setlocal
set PATH=...
set OTHERTHING=...
@REM Rest of your script
Read the docs carefully for setlocal/endlocal , and have a look at the other references on that site - Functions is pretty interesting too and the syntax is tricky.
The Syntax page should get you started with the ba...
Command-line Unix ASCII-based charting / plotting tool
...t 2*$1, $1*$1}' |
feedgnuplot --lines --points --legend 0 "data 0" --title "Test plot" --y2 1
--terminal 'dumb 80,40' --exit
Test plot
10 ++------+--------+-------+-------+-------+--------+-------+------*A 25
+ + ...
Getting the minimum of two values in SQL
...s in SQL. How can I select the smaller of the two and return it as a value titled PaidForPast ?
10 Answers
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