sudo aptitude purge `dpkg --get-selections | grep ":i386" | awk '{print $1}'` # or sudo apt-get purge ".*:i386" sudo dpkg --remove-architecture i386
dpkg --add-architecture i386 apt-get update apt-get install gpm tcpdump bmon tinc ppp pptpd mc links2 gparted hdparm smartmontools smart-notifier valgrind openssh-server apt-get install wireshark mtr