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Show linux kernel modules dependencies
Use modprobe to list all the dependencies of a certain kernel module. Handy when debugging system issues.

Determine space taken by files of certain type
Just how much space are those zillions of database logs taking up ? How much will you gain on a compression rate of say 80% ? This little line gives you a good start for your calculations.

display a smiling smiley if the command succeeded and a sad smiley if the command failed
you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

Change Gnome wallpaper
You can use this in a script which rotates wallpapers from a directory at each login.

Prints a file leaving out all blank lines and comment-only lines
Does not print any line that either: - is empty - contains only spaces or tabs - starts with # - starts with spaces/tabs followed by a #

Calculate your total world compile time. (Gentoo Distros)
From Gentoo Forum, greetings to rudregues & steveL.

rapidshare download script in 200 characters

Exclude multiple columns using AWK
Print all columns except the 1st and 3rd.

Produce a pseudo random password with given length in base 64

get you public ip address
Relies on ifconfig.me functioning. It's about as easy as it gets, and memorable to old geeks too.


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