BSD

Berkeley Software Distribution (usually abbreviated to BSD) was the series of UNIX distributions created by the Computer Systems Research Group‎ at Berkeley. The CSRG put together the following releases:

Notable releases

• 2.9BSD - For PDP-11s, the first full release from CSRG (prior releases were patches)
• 2.10BSD
• 2.11BSD - A still-maintained version for PDP-11S
• 3.0 BSD - A VAX version derived from Unix/32V, including a real virtual memory system
• 4.0 BSD - A vastly improved 3.0
• 4.1 BSD - These were mostly betas testing new file systems & the TCP/IP protocol.
• 4.1a BSD - This included BBN's TCP/IP software
• 4.1b BSD - This version introduced the FFS file system.
• 4.1c BSD - A beta of 4.2, and I think the first version of BSD sockets?
• 4.2 BSD - The first shipping version of BSD with TCP/IP, FFS & termcap for the VAX.
• 4.3 BSD - A version of pre-POSIX BSD, for the VAX.
• 4.4 BSD - Did this version ever ship?
• Net/1 - The TCP/IP source, and other programs free of the AT&T copyrite
• Net/2 - Almost an entire release of all the source. This was the contention in the AT&T vs CSRG lawsuit.
• 4.4 BSD Lite - This was the result of the aformentioned lawsuit. This was 'lite' in that it removed the offending 6 files.
• 4.4 BSD Lite2 - the last release?

See also

• 386BSD - the first Net/2 derived OS; it then spawned:
  • NetBSD
  • FreeBSD
  • OpenBSD
• BSD Daemon

External links

• Proposal for enhancement of UNIX on the VAX - Berkeley's proposal to DARPA that led to 4.0 and its successors
• An architecture for Interprocess Communication in UNIX
• Design and Implementation of the Berkeley Virtual Memory Extensions to the UNIX Operating System - PDF, not a scan
• Data Structures Added in the Berkeley Virtual Memory Extensions to the UNIX Operating System - ditto
• Twenty Years of Berkeley Unix: From AT&T-Owned to Freely Redistributable - a crisp, clear history of the BSD effort
• bsd family tree
• The Daemon, the GNU and the Penguin: Chapter 7 - BSD and the CSRG