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Change pidgin status
Thanks for the comment oshazard, i wasn't aware of purple-remote existence.

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

bash function to check for something every 5 seconds
checkfor: have the shell check anything you're waiting for. 'while : ; do' is an infinite loop '$*' executes the command passed in 'sleep 5' - change for your tastes, sleep for 5 seconds bash, ksh, likely sh, maybe zsh Ctrl-c to break the loop

Find out what package some command belongs to (on RPM systems)
Replace 'more' command with any command which is in your PATH.

Selecting a random file/folder of a folder
Also looks in subfolders

Hear the mice moving
Beeps on mouse's every move. Bear in mind that, at least on Ubuntu, /dev/input/mice can be read only by root.

Delete all but the latest 5 files
yes 6 (tail from 6th line)

print file without duplicated lines using awk
This create an array 'a' with wole lines. only one occurrence of each line - Not Get lines ++ !

List your MACs address

Mnemonic for `nice` and `renice` command
This is just a phrase I use to help me remember which way is what when using nice (top, renice, etc.), and not a command, (unless you really want this in your .bash_history to help remind you.) I was using the command `man nice ` way too much just to look up which way is what. This saves 9 keystrokes every time I remember it. Make sure you downvote me if you think mnemonics sux. Otherwise I hope this helps someone else.


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