apt-get purge $(aptitude search '~i!~M!~prequired!~pimportant!~R~prequired!~R~R~prequired!~R~pimportant!~R~R~pimportant!busybox!grub!initramfs-tools' | awk '{print $2}')
apt-get purge aptitude
apt-get autoremove
apt-get clean