This testsuite is NOT SECURE: it will temporarily change your passwords file with known passwords. You should run it on a chroot, or on a secured dedicated system. To test a Debian system: $ mkdir sid-chroot $ sudo debootstrap sid sid-chroot/ http://deb.debian.org/debian/ edit or copy a sources.list $ sudo cp /etc/apt/sources.list sid-chroot/etc/apt/ edit or copy a resolv.conf $ sudo cp /etc/resolv.conf sid-chroot/etc/ $ su - root -c "chroot sid-chroot/ /bin/bash" # mount -t proc proc /proc # mount -t devpts devpts /dev/pts # aptitude update # aptitude install expect # cd /dev ; mknod --mode=666 /dev/ptmx c 5 2