(V7) The unsupported release of Unix ancestral to all current commercial versions. {Brian Kernighan} announced the release of V7 in summer 1979, at the Unix User' s Group meeting in Toronto. Before the release of the POSIX/SVIDstandards, V7' s features were often treated as a Unix portability baseline. Some old-timers impatient with commerciAlisation and {kernel bloat} still maintain that V7 was the Last True Unix. See BSD, USG Unix, System V. [Jargon File] (1996-05-22)