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BSD
BSD /B-S-D/ /n./ [abbreviation for `Berkeley Software
Distribution'] a family of Unix versions for the DEC
VAX and PDP-11 developed by Bill Joy and others at
Berzerkeley starting around 1980, incorporating paged virtual
memory, TCP/IP networking enhancements, and many other features.
The BSD versions (4.1, 4.2, and 4.3) and the commercial versions
derived from them (SunOS, ULTRIX, and Mt. Xinu) held the technical
lead in the Unix world until AT&T's successful standardization
efforts after about 1986, and are still widely popular. Note that
BSD versions going back to 2.9 are often referred to by their
version numbers, without the BSD prefix. See 4.2, Unix,
USG Unix.
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