SyStem> (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)