Installing and uninstalling gnome on debian
aptitude purge `dpkg --get-selections | grep gnome | cut -f 1`
aptitude -f install
aptitude purge `dpkg --get-selections | grep deinstall | cut -f 1`
aptitude -f install
aptitude purge `dpkg --get-selections | grep gnome | cut -f 1`
aptitude -f install
aptitude purge `dpkg --get-selections | grep deinstall | cut -f 1`
aptitude -f install