unrarall attemps to extract all rar files in a given directory (and its sub-directories) and once successfully extracted remove all the rar files to cleanup (you must pass --clean= for this to happen and use the rar hook). Other unwanted files can be removed by the use of the other available hooks (see the list shown in --help ). It is meant to be more error proof and quicker than cleaning by hand. You can also set an output folder, use different backends, perform sfv checks automatically etc...
If there's something you would liked removed by unrarall then you can implement your own hook (See HACKING).
chmod u+x unrarall
Run unrarall with all cleanups on current directory
unrarall --clean=all .
Run with an output directory on the current directory
unrarall --output /tmp/mystuff .
Run unrarall -h to get the help for much more details.
Enjoy.
Name and idea comes from "jeremy" see - http://askubuntu.com/questions/7059/script-app-to-unrar-files-and-only-delete-the-archives-which-were-sucessfully