aptitude clean
cd /
rm -r /var/cache/apt/archives/*
rm -rf /etc/resolv.conf
rm -rf /etc/hosts
#ln -sf /run/resolvconf/resolv.conf /etc/resolv.conf
cd /etc
ln -sf ../run/systemd/resolve/stub-resolv.conf
cd /
rm -rf /root
mkdir /root
rm -r /mydir
rm -rf /tmp/* ~/.bash_history
rm /var/lib/dbus/machine-id
rm /sbin/initctl
dpkg-divert --rename --remove /sbin/initctl

umount /proc || umount -lf /proc                   
umount /sys
umount /dev/pts
exit                                                                                        
sudo umount edit/dev                                  
xhost -