"Keeping your system clean can be a time-consuming
affair, unless you use specialized tools like BleachBit (thanks to
Nick Lord for the pointer). With just a few mouse clicks, this
nifty little utility can help you to purge all the junk produced by
the system and installed applications. Packaged versions of
BleachBit are available for many popular distributions, so you can
easily install the utility using your distro's package manager.
Once installed, you can run BleachBit either as a regular user or
"BleachBit's interface is simplicity itself, so you can figure
out how to use the tool in a matter of minutes"