find -name '*~' -delete
# Get everything into the cache.
-guestfish -a /dev/null run > /dev/null 2>&1
-guestfish --ro -a 0050-demo.d/f16x32.img run > /dev/null 2>&1
+guestfish -a /dev/null run > /dev/null
+guestfish --ro -a 0050-demo.d/disk.img -i exit > /dev/null
# Run techtalk.
techtalk-pse