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See multiple progress bars at once for multiple pipes with pv
In this example we convert a .tar.bz2 file to a .tar.gz file. If you don't have Pipe Viewer, you'll have to download it via apt-get install pv, etc.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Get decimal ascii code from character
printf treats first char after single ' as numeric equivalent

Limit bandwidth usage by apt-get
Limits the usage of bandwidth by apt-get, in the example the command will use 30Kb/s ;) It should work for most apt-get actions (install, update, upgrade, dist-upgrade, etc.)

histogram of file size

Make vim open in tabs by default (save to .profile)
I always add this to my .profile rc so I can do things like: "vim *.c" and the files are opened in tabs.

Take a screenshot every 2 seconds
Take a screenshot every 2 seconds and save it as a png file

Search some text from all files inside a directory

Binary digits Matrix effect
Silly Perl variant.

Testing php configuration


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