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Scan all open ports without any required program

Record MP3 audio via ALSA using ffmpeg
Record audio to an MP3 file via ALSA. Adjust -i argument according to arecord -l output.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

list block devices
Shows all block devices in a tree with descruptions of what they are.

Kill all Zombie processes (Guaranteed!)
It identifies the parents of the Zombie processes and kill them. So the new parent of orphan Zombies will be the Init process and he is already waiting for reaping them. Be careful! It may also kill your useful processes just because they are not taking care and waiting for their children (bad parents!).

Watch how many tcp connections there are per state every two seconds.
slighty shorter

Print a great grey scale demo !
Seen here: http://www.pixelbeat.org/docs/terminal_colours/

Locate config files of the program
Locate config files of the program. May not be used for interactive programs like vim.

For when GUI programs stop responding..
man xkill

Concatenate (join) video files
Use mencoder to concatenate (join) multiple video files together.


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