I just threw together a quick shell script to automate the process of unraring multiple rars.

enter a directory containing rars to be extracted, a password if required, and just walk away =)
The script searches for all .rar files within a user specified directory and then one by one applies an unrar command to each. The script will work for passworded archives too, or if they have different passwords, enter one at a time
Currently split archives are not supported by this script, so be warned.
If you use a lot of rar files, or are a rapidshare user, take a look and try it for your self
echo "Enter path of dir which contains rar files for extraction" read thedir echo "The script will now attempt to extract the following files" ls $thedir echo "if these files are password protected, enter password now... (if not, type 0)" read $rarpass if [ "$rarpass" == 0 ]; then for f in "$thedir/*.rar"; do unrar e -v $f done else for f in "$thedir/*.rar"; do unrar -prarpass e -v $f done fi