|(operating system)||Version 7 - (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/SVID standards, 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.