A UNIX variant developed at the Berkeley University computing department. This version has always been considered more technically advanced than the others, and has brought many innovations to the computing world in general and to UNIX in particular. CHAP
The version of the Unix operating system developed by the University of California at Berkeley.
UNIX software release of the Computer Systems Research Group (CSRG) of the University of California at Berkeley.
Implementation of the UNIX operating system and its utilities developed and distributed by the University of California at Berkeley. "BSD" is usually preceded by the version number of the distribution, e.g., "4.3 BSD" is version 4.3 of the Berkeley UNIX distribution. Many Internet hosts run BSD software, and it is the ancestor of many commercial UNIX implementations. [Source: NNSC
A version of the UNIX operating system that first included TCP/IP support. The UNIX operating systems that included TCP/IP are referred to as 4.2BSD or 4.3BSD.
Berkeley Software Distribution (BSD, sometimes called Berkeley Unix) is the Unix derivative distributed by the University of California, Berkeley, starting in the 1970s. The name is also used collectively for the modern descendants of these distributions.