eles vason:
netbsd, freebsd, openbsd, 4.3bsd (Quasijarus, Wisconsin Unix), ultrix/vax, vms, qnx6.2, 386bsd, minix3
virtualizerben/emulatorban/szimulatorban:
meg tobbet, pl. 2.11bsd, 2.9bsd, darwin8.akárhanyas
http://hup.hu/taxonomy/term/209
http://www.youtube.com/watch?v=QXz7-BNC6jw
http://nocirc.org/