Commands by Williebee (8)

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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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mplayer webcam window for screencasts
When recording screencast some people like to have the image from their webcam, so the can show something, that can't be seen on the desktop. So starting mplayer with these parameters you will have a window with no frames, borders whatsoever, and selecting the window a hitting the "F" key you will bring it in fullscreen. if you want to position the frame somewhere else, you could play with the --geomeptry option where 100%:100% mean bottom right corner. The HEIGHT and WIDTH can't be changed as you like, since the most webcams support specified dimensions, so you would have to play with it to see what is supported

extract email adresses from some file (or any other pattern)
This will catch most separators in the section of the email: dot . dash - underscore _ plus + (added for gmail) ... and the basic dash '-' of host names.

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

Post a message to another users screen via SSH
Post a message on another users screen via SSH

Monitor a file with tail with timestamps added

Display the inodes number of /

reverse order of file

dump 1KB of data from ram to file

list files recursively by size

Show sorted list of files with sizes more than 1MB in the current dir
no fancy grep stuff here.


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