Yesterday I set up a PDP-11 with Unix v7. That was great fun.Is there maybe something more Unix, i.e. Unix engineered by Bell lab/Gen. electr., than BSD (FreeBSD), without all those confirmation popups (needs to workaround -f and -i stuffs) for base binaries?
Install emulators/simh and follow the instructions here: http://gunkies.org/wiki/Installing_v7_on_SIMH