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What is the purpose of the : (colon) GNU Bash builtin?
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$ ./vecho
$ VERBOSE=1 ./vecho
Verbose echo is ON
This makes for a clean script. This cannot be done with '#'.
Also,
: >afile
is one of the simplest ways to guarantee that 'afile' exists but is 0 length.
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How To Launch Git Bash from DOS Command Line?
...e posted an answer here.
Open a Windows command window, and execute this script. If there is a change in your working directory, it will open a bash terminal in your working directory, and display the current git status. It keeps the bash window open, by calling exec bash.
If you have multiple pr...
Nginx — static file serving confusion with root & alias
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@Pistos: put log_format scripts '$document_root | $uri | > $request'; into http section and access_log /var/log/nginx/scripts.log scripts; into server section of nginx config..
– helvete
Jun 6 '18 at 13:24
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socket.io and session?
...n exposes the app to XSS attacks by exposing the session ID at the client (scripting) level.
Check this solution instead (for Socket.IO >= v0.7). See docs here.
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IIS7: HTTP->HTTPS Cleanly
...as Step-By-Step instructions on how this is done, except that they use javascript (HttpRedirect.htm) instead of a server-side redirect. For some reason, I couldn't get IE run the javascript if you have ‘Show friendly HTTP error messages’ enabled, which is on by default. Another thing with the sc...
Why can I use a function before it's defined in JavaScript?
...entical and can be ambiguous in some cases.
This is documented in the ECMAScript standard, section 10.1.3. Unfortunately ECMA-262 is not a very readable document even by standards-standards!
*: the containing function, block, module or script.
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Looking for a good world map generation algorithm [closed]
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I've created something similar to your first image in JavaScript. It's not super sophisticated but it works :
http://jsfiddle.net/AyexeM/zMZ9y/
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html ...
ab load testing
...d. It runs any command even when you close the terminal.
I wrote a simple script that automates the whole process, feel free to use it: http://blog.ikvasnica.com/entry/load-test-multiple-api-endpoints-concurrently-use-this-simple-shell-script
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Is there a Unix utility to prepend timestamps to stdin?
I ended up writing a quick little script for this in Python, but I was wondering if there was a utility you could feed text into which would prepend each line with some text -- in my specific case, a timestamp. Ideally, the use would be something like:
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Working with huge files in VIM
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I wrote a little script based on Florian's answer that uses nano (my favorite editor):
#!/bin/sh
if [ "$#" -ne 3 ]; then
echo "Usage: $0 hugeFilePath startLine endLine" >&2
exit 1
fi
sed -n -e $2','$3'p' -e $3'q' $1 > hfnano_...