Commands by Kenniesit (0)

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modify a file in place with perl
changes THIS to THAT in all files matching fileglob* without using secondary files

MSDOS command to check existance of command and exit batch if failed
This is a command to be used inside of MS-DOS batch files to check existence of commands as preconditions before actual batch processing can be started. If the command is found, batch script continues execution. If not, a message is printed on screen, script then waits for user pressing a key and exits. An error message of the command itself is suppressed for clarity purpose.

Print CPU load in percent
Faster then all other commands here at cmdlinefu with the same purpose.

Launch a game, like Tetris, when apt-get installing an app larger than 50 Megabytes
Change the APP variable's value to whatever you want to install. Depending on how fast your machine is, you'll want to adjust the value 50 to something else. You might also want to play a different game than Gnometris - just make sure it's a GUI game.

Manipulate the metadata when the photo was taken, this will shift with +15hours + 30min

convert unixtime to human-readable with awk
- convert unixtime to human-readable with awk - useful to read logfiles with unix-timestamps, f.e. squid-log: sudo tail -f /var/log/squid3/access.log | awk '{ print strftime("%c ", $1) $0; }

Remove security limitations from PDF documents using ghostscript (for Windows)
#4345 also works under windows

floating point operations in shell scripts
using bc is for sissies. dc is much better :-D Polish notation will rule the world...

Add an iptables rule on RH/CentOs before the reject
Rather then editing the /etc/sysconfig/iptables file, or during a kickstart doing some awk/sed magic, easily add a rule in the correct place within iptables

list files recursively by size

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