From: greep at SU-DSN Via: Su-Dsn.ArpaNet; 23 Oct 81 14:40-PDT Berkeley distributes such a system with their version of Vax/Unix. At one time I converted an older version of it to run on a PDP-11 running V6 Unix, so it could certainly be made to run, probably with little change, on the PDP-11 with V7.