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commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Press enter and take a WebCam picture.
This command takes a 1280x1024 p picture from the webcam. If prefer it smaller, try changing the -s parameter: qqvga is the tiniest, vga is 640x480, svga is 800x600 and so on. Get your smile on and press enter! :)

A child process which survives the parent's death (for sure)
Test scenario: * Open xterm (or konsole, ...) * Start xeyes with: ( xeyes & ) * Close the xterminal The xeyes process should be still running.

Calculate N!

disable caps lock
a quick one-line way to disable caps lock while running X.

Show webcam output
Show the webcam output with mplayer.

find all files containing a pattern, open them using vi and place cursor to the first match, use 'n' and ':n' to navigate

Mirror rubygems.org
https://github.com/rubygems/rubygems-mirror/issues/20

search for text in files. recursive.
recursively search dir for a a particular file type, search each file for a particular text.

Generate 2000 images with its number written on it

Blank/erase a DVD-RW


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