The Unix system family tree / BSD history chart ----------------------------------------------- First Edition (V1) | Second Edition (V2) | Third Edition (V3) | Fourth Edition (V4) | Fifth Edition (V5) | Sixth Edition (V6) -----* \ | \ | \ | Seventh Edition (V7) | \ | \ 1BSD 32V | \ 2BSD---------------* \ / | \ / | \/ | 3BSD | | | 4.0BSD 2.7.9BSD | | *------ 4.1BSD --------------> 2.8BSD / | | Eighth Edition | 2.8.1BSD | | | | 4.1aBSD -----------\ | | | \ | | 4.1bBSD \ | | | \ | | 4.1cBSD --------------> 2.9BSD | | | | | 2.9BSD-Seismo | | | +----<--- 4.2BSD 2.9.1BSD | | | +----<--- 4.3BSD -------------> 2.10BSD | | / | Ninth Edition | / 2.10.1BSD | 4.3BSD Tahoe-----+ | | | \ | | | \ | v | 2.11BSD Tenth Edition | | | 2.11BSD rev #366 4.3BSD NET/1 | | v 4.3BSD Reno | *---------- 4.3BSD NET/2 -------------------+-------------* | | | | 386BSD 0.0 | | | | | | | 386BSD 0.1 ------------>+ | BSDI 1.0 | \ | 4.4BSD Alpha | | 386BSD 1.0 | | | | | 4.4BSD | | | / | | | | 4.4BSD-Encumbered | | | NetBSD 0.8 | | | | | | FreeBSD 1.0 NetBSD 0.9 | | | | .----- 4.4BSD Lite --> BSDI 2.0 FreeBSD 1.1 | / / | | | | / / | BSDI 2.0.1 FreeBSD 1.1.5 .---|--------' / | | | / | / 4.4BSD Lite2 -> BSDI 2.1 FreeBSD 1.1.5.1 / | / / | | \ | | / NetBSD 1.0 <-' / | | \ | | / | / | | `-BSDI 3.0 FreeBSD 2.0 <--' | FreeBSD 3.0 | | | | \ NetBSD 1.3 | v FreeBSD 2.0.5 \ OpenBSD 2.3 | \ | \ FreeBSD 2.1 | | | NetBSD 1.1 ------. | FreeBSD 2.1.5 | \ | | NetBSD 1.2 \ | FreeBSD 2.1.6 | \ OpenBSD 2.0 | | | \ | | FreeBSD 2.1.6.1 | \ | | | | \ | | FreeBSD 2.1.7 | | | | | | NetBSD 1.2.1 | | FreeBSD 2.1.7.1 | | | | | | | | *-FreeBSD 2.2 | | | \ | | | FreeBSD 2.2.1 | | | | | | | FreeBSD 2.2.2 | OpenBSD 2.1 | | NetBSD 1.3 | | FreeBSD 2.2.5 | \ | | | | NetBSD 1.3.1 OpenBSD 2.2 | v | | | | FreeBSD 2.2.6 | | OpenBSD 2.3 | | | NetBSD 1.3.2 | | v | | | | FreeBSD 2.2.7 | | | | | | | | | v | | | | FreeBSD 2.2.8 | | | | | | | | | | OpenBSD 2.4 FreeBSD 3.0 | | | | | NetBSD 1.3.3 | *---FreeBSD 3.1 | | | | | | | FreeBSD 3.2 NetBSD 1.4 OpenBSD 2.5 | | | | | FreeBSD 3.3 | | | | | | | | FreeBSD 4.0-CURRENT | | | v v v Time ---------------- Time tolerance +/- 6 month, depend on which book/article you read; if it was the announcement in Usenet or if it was available as tape. [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John Quarterman. The Design and Implementation of the 4.4BSD Operating System. [DOC] README, COPYRIGHT on tape. [QCU] Salus, Peter H. A quarter century of UNIX. [U25] Peter H. Salus. Unix at 25. [USE] Usenet announcement. [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. Changes in the Kernel in 2.9BSD. Second Berkeley Software Distribution UNIX Version 2.9, July, 1983. [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, Volume 11, Info 4, April, 1987. [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. comp.bugs.4bsd.ucb-fixes, June 15, 1988. [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. [FBD] FreeBSD Project, The. [NBD] NetBSD Project, The. [OBD] OpenBSD Project, The. [dmr] Dennis Ritchie, via E-Mail Multics 1965 Unix Summer 1969 DEC PDP-7 First Edition 1971-11-03 [QCU] DEC PDP-11/20, Assembler Second Edition 1972-06-12 [QCU] 10 Unix installations Third Edition 1973-02-xx [QCU] Pipes, 16 installations Fourth Edition 1973-11-xx [QCU] rewriting in C effected, above 30 installations Fifth Edition 1974-06-xx [QCU] above 50 installations Sixth Edition 1975-05-xx [QCU] port to DEC Vax Seventh Edition 1979-01-xx [QCU] first portable Unix Eight Edition 1985-02-xx [QCU] VAX 11/750, VAX 11/780 [dmr] descended from 4.1c BSD [dmr] descended from 4.1 BSD [44B] scooping-out and replacement of the character-device and networking part by the streams mechanism Ninth Edition 1986-09-xx [QCU] Tenth Edition 1989-10-xx [QCU] 1BSD late 1977 1978-03-09 [QCU] PDP-11, Pascal, ex(1) 30 free copies of 1BSD sent out 35 tapes sold for 50 USD [QCU] 2BSD mid 1978 [QCU] 75 2BSD tapes shipped 2.7.9BSD ?? [SMS] 2.8BSD 1981-07-xx [KSJ] 2.8.1BSD 1982-01-xx [QCU] set of performance improvements 2.9BSD 1983-07-xx [KSJ] 2.9.1BSD 1983-11-xx 2.9BSD-Seismo 1985-08-xx [SMS] 2.10BSD 1987-04-xx [KKK] 2.10.1BSD 1989-01-xx [SMS] 2.11BSD 1992-02-xx [SMS] 2.11BSD rev #366 1997-02-xx [SMS] 32V 1978-1[01]-xx [QCU] 3BSD late 1979 [QCU] virtual memory, page replacement, demand paging 4.0BSD 1980-10-xx 4.1BSD 1981-06-xx 4.1aBSD 1982-04-xx alpha release, 100 sites, networking [44B] 4.1bBSD internal release, fast filesystem [44B] 4.1cBSD late 1982 beta release, IPC [44B] 4.2BSD 1983-09-xx [QCU] 4.3BSD 1986-06-xx [QCU] 1986-04-xx [KB] 4.3BSD Tahoe 1988-06-xx [QCU] 4.3BSD NET/1 1988-11-xx [QCU] 4.3BSD Reno 1990-06-xx [QCU], [DOC] 4.3BSD NET/2 1991-06-xx [QCU] 386BSD 0.0 1992-02-xx [DOC] 386BSD 0.1 1992-07-xx [DOC] 4.4BSD Alpha 1992-07-07 NetBSD 0.8 1993-04-19 [NBD] 4.4BSD 1993-06-01 [USE] NetBSD 0.9 1993-08-23 [NBD] FreeBSD 1.0 1993-11-xx [FOO] 4.4BSD Lite 1994-03-01 [USE] FreeBSD 1.1 1994-04-xx [FBD] FreeBSD 1.1.5.1 1994-07-xx [FBD] supersedes 1.1.5 3 days after release. NetBSD 1.0 1994-11-08 [NBD] 386BSD 1.0 1994-11-12 [USE] FreeBSD 2.0 1995-01-xx [FBD] FreeBSD 2.0.5 1995-06-xx [FBD] 4.4BSD Lite Release 2 1995-06-xx [44B] the true final distribution from the CSRG NetBSD 1.1 1995-11-26 [NBD] FreeBSD 2.1 1995-12-xx [FBD] FreeBSD 2.1.5 1996-08-xx [FBD] NetBSD 1.2 1996-10-04 [NBD] OpenBSD 2.0 1996-10-18 [OBD] FreeBSD 2.1.6 1996-12-xx [FBD] FreeBSD 2.1.7 1997-02-xx [FBD] FreeBSD 2.2.1 1997-04-xx [FBD] NetBSD 1.2.1 1997-05-20 [NBD] OpenBSD 2.1 1997-06-01 [OBD] FreeBSD 2.2.2 1997-06-xx [FBD] NetBSD 1.3 1997-09-24 [NBD] FreeBSD 2.2.5 1997-11-xx [FBD] OpenBSD 2.2 1997-12-01 [OBD] FreeBSD 2.2.6 1998-03-xx [FBD] OpenBSD 2.3 1998-05-19 [OBD] NetBSD 1.3.2 1998-05-24 [NBD] FreeBSD 2.2.7 1998-07-xx [FBD] FreeBSD 3.0 1998-10-16 [FBD] FreeBSD-3.0 is a snapshot from -current, while 3.1 and 3.2 are from 3.x-stable which was branched quite some time after 3.0-release FreeBSD 2.2.8 1998-11-29 [FBD] OpenBSD 2.4 1998-12-01 [OBD] NetBSD 1.3.3 1998-12-23 [NBD] FreeBSD 3.1 1999-02-15 [FBD] Bibliography ------------------------ Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing Company, Inc., 1994. ISBN 0-201-54777-5 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John Quarterman. The Design and Implementation of the 4.4BSD Operating System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 Doug McIlroy. Research Unix Reader. Michael G. Brown. The Role of BSD in the Development of Unix. Presented to the Tasmanian Unix Special Interest Group of the Australian Computer Society, Hobart, August 1993. URL: http://www.dpac.tas.gov.au/~mgb/papers/bsdrole.html Peter H. Salus. Unix at 25. Byte Magazin, October 1994. URL: http://www.byte.com/art/9410/sec8/art3.htm Andreas Klemm, Lars Köller. If you're going to San Francisco ... Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. URL: http://www.heise.de BSD Release Announcements collection. URL: http://www.de.FreeBSD.ORG/de/ftp/releases/ BSD Hypertext Man Pages http://www.freebsd.org/cgi/man.cgi Acknowledgments --------------- Josh Gilliam for suggestions, bugfixes, and finding very old original BSD announcements from Usenet or tapes. Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. -- Copyright (c) 1997-1999 Wolfram Schneider URL: ftp://ftp.freebsd.org/pub/FreeBSD/FreeBSD-current/src/share/misc/bsd-family-tree $FreeBSD$