| Berkeley System Distribution (BSD) A family of versions for the and , developed by and others at the . BSD Unix incorporates , networking enhancements, and many other features. BSD UNIX 4.0 was released on 19 October 1980. The BSD versions (4.1, 4.2, and 4.3) and the commercial versions derived from them (, , {Mt. Xinu}, ) held the technical lead in the Unix world until {AT&T}'s successful standardisation efforts after about 1986, and are still widely popular. See also , . (1994-11-23) |