freebsd-skq/share/misc/bsd-family-tree
2013-06-16 07:16:44 +00:00

644 lines
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Plaintext

The UNIX system family tree: Research and BSD
---------------------------------------------
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 2.79BSD
| |
4.1BSD --------------> 2.8BSD
| |
4.1aBSD -----------\ |
| \ |
4.1bBSD \ |
| \ |
*------ 4.1cBSD --------------> 2.9BSD
/ | |
Eighth Edition | 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 #430
4.3BSD NET/1 |
| v
4.3BSD Reno
|
*---------- 4.3BSD NET/2 -------------------+-------------*
| | | |
386BSD 0.0 | | BSD/386 ALPHA
| | | |
386BSD 0.1 ------------>+ | BSD/386 0.3.[13]
| \ | 4.4BSD Alpha |
| 386BSD 1.0 | | BSD/386 0.9.[34]
| | 4.4BSD |
| | / | |
| | 4.4BSD-Encumbered | |
| -NetBSD 0.8 | BSD/386 1.0
| / | | |
FreeBSD 1.0 <-----' NetBSD 0.9 | BSD/386 1.1
| | .----- 4.4BSD Lite |
FreeBSD 1.1 | / / | \ |
| | / / | \ |
FreeBSD 1.1.5 .---|--------' / | \ |
| / | / | \ |
FreeBSD 1.1.5.1 / | / | \ |
| / NetBSD 1.0 <-' | \ |
| / | | \ |
FreeBSD 2.0 <--' | | BSD/OS 2.0
| \ | |
FreeBSD 2.0.5 \ | BSD/OS 2.0.1
| .-----\------------- 4.4BSD Lite2 |
| | \ | | | | |
| | .-----|------Rhapsody | | | |
| | | | NetBSD 1.3 | | |
| | | | OpenBSD 2.3 | |
| | | | BSD/OS 3.0 |
FreeBSD 2.1 | | | |
| | | | NetBSD 1.1 ------. BSD/OS 2.1
| FreeBSD 2.1.5 | | | \ |
| | | | NetBSD 1.2 \ BSD/OS 3.0
| 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 |
| | | | | | |
| FreeBSD 2.2.5 | | | | |
| | | | | OpenBSD 2.2 |
| | | | NetBSD 1.3 | |
| FreeBSD 2.2.6 | | | | | |
| | | | | NetBSD 1.3.1 | BSD/OS 3.1
| | | | | | OpenBSD 2.3 |
| | | | | NetBSD 1.3.2 | |
| FreeBSD 2.2.7 | | | | | |
| | | | | | | BSD/OS 4.0
| v | | | | | |
| FreeBSD 2.2.8 | | | | | |
| | | | | OpenBSD 2.4 |
FreeBSD 3.0 <--------* | | v | |
| | | NetBSD 1.3.3 | |
*---FreeBSD 3.1 | | | |
| | | | | BSD/OS 4.0.1
| FreeBSD 3.2----* | NetBSD 1.4 OpenBSD 2.5 |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| FreeBSD 3.3 | | | | NetBSD 1.4.1 | |
| | | | | | | OpenBSD 2.6 |
| FreeBSD 3.4 | | | | | | |
| | | | | | | | BSD/OS 4.1
FreeBSD 4.0 | | | | | NetBSD 1.4.2 | |
| | | | | | | | |
| | | | | | | | |
| FreeBSD 3.5 | | | | | OpenBSD 2.7 |
| | | | | | | | |
| FreeBSD 3.5.1 | | | | | | |
| | | | | | | |
*---FreeBSD 4.1 | | | | | | |
| | | | (?) | | | |
| FreeBSD 4.1.1 | | / | | | |
| | | | / | | | |
| FreeBSD 4.2 Darwin/ | NetBSD 1.4.3 | |
| | Mac OS X | OpenBSD 2.8 BSD/OS 4.2
| | | | | |
| | | | | |
| | 10.0 NetBSD 1.5 | |
| FreeBSD 4.3 | | | | |
| | | | | OpenBSD 2.9 |
| | | | NetBSD 1.5.1 | |
| | | | | | |
| FreeBSD 4.4-. | | NetBSD 1.5.2 | |
| | | Mac OS X | | | |
| | | 10.1 | | OpenBSD 3.0 |
| FreeBSD 4.5 | | | | | |
| | \ | | | | BSD/OS 4.3
| FreeBSD 4.6 \ | | | OpenBSD 3.1 |
| | \ | | NetBSD 1.5.3 | |
| FreeBSD 4.6.2 Mac OS X | | |
| | 10.2 | | |
| FreeBSD 4.7 | | | |
| | | NetBSD 1.6 OpenBSD 3.2 |
| FreeBSD 4.8 | | | | |
| | | | NetBSD 1.6.1 | |
| |--------. | | | OpenBSD 3.3 BSD/OS 5.0
| | \ | | | | |
| FreeBSD 4.9 | | | | OpenBSD 3.4 BSD/OS 5.1 ISE
| | | | | | |
| | | | | NetBSD 1.6.2 |
| | | | | | |
| | | | | | OpenBSD 3.5
| | | | | v |
| FreeBSD 4.10 | | | |
| | | | | |
| FreeBSD 4.11 | | | |
| | | | |
| `-|------|-----------------|---------------------.
| | | | \
FreeBSD 5.0 | | | |
| | | | |
FreeBSD 5.1 | | | DragonFly 1.0
| \ | | | |
| ----- Mac OS X | | |
| 10.3 | | |
FreeBSD 5.2 | | | |
| | | | | |
| FreeBSD 5.2.1 | | | |
| | | | |
*-------FreeBSD 5.3 | | | |
| | | | OpenBSD 3.6 |
| | | NetBSD 2.0 | |
| | | | | | | DragonFly 1.2.0
| | Mac OS X | | NetBSD 2.0.2 | |
| | 10.4 | | | | |
| FreeBSD 5.4 | | | | | |
| | | | | | OpenBSD 3.7 |
| | | | | NetBSD 2.0.3 | |
| | | | | | | |
*--FreeBSD | | | | v OpenBSD 3.8 |
| 6.0 | | | | | |
| | | | | \ | |
| | | | | NetBSD 2.1 | |
| | | | | | |
| | | | NetBSD 3.0 | |
| | | | | | | | DragonFly 1.4.0
| | | | | | | OpenBSD 3.9 |
| FreeBSD | | | | | | |
| 6.1 | | | | | | |
| | FreeBSD 5.5 | | | | | |
| | | | | NetBSD 3.0.1 | DragonFly 1.6.0
| | | | | | | |
| | | | | | OpenBSD 4.0 |
| | | | | NetBSD 3.0.2 | |
| | | | NetBSD 3.1 | |
| FreeBSD 6.2 | | | |
| | | | | DragonFly 1.8.0
| | | | OpenBSD 4.1 |
| | | | | DragonFly 1.10.0
| | Mac OS X | | |
| | 10.5 | | |
| | | | OpenBSD 4.2 |
| | | NetBSD 4.0 | |
| FreeBSD 6.3 | | | | |
| \ | | | | |
*--FreeBSD | | | | | DragonFly 1.12.0
| 7.0 | | | | | |
| | | | | | OpenBSD 4.3 |
| | | | | NetBSD | DragonFly 2.0.0
| | FreeBSD | | 4.0.1 OpenBSD 4.4 |
| | 6.4 | | | |
| | | | | |
| FreeBSD 7.1 | | | |
| | | | | DragonFly 2.2.0
| FreeBSD 7.2 | NetBSD 5.0 OpenBSD 4.5 |
| \ | | | \ | |
| | Mac OS X | | \ | |
| | 10.6 | | \ | |
| | | | | NetBSD | DragonFly 2.4.0
| | | | | 5.0.1 OpenBSD 4.6 |
| | | | | | | |
*--FreeBSD | | | | | | |
| 8.0 | | | | | | |
| | FreeBSD | | | NetBSD | |
| | 7.3 | | | 5.0.2 | DragonFly 2.6.0
| | | | | | OpenBSD 4.7 |
| FreeBSD | | | | | |
| 8.1 | | | | | |
| | | | | | | DragonFly 2.8.2
| | | | | | OpenBSD 4.8 |
| | | | | *--NetBSD | |
| FreeBSD FreeBSD | | | 5.1 | |
| 8.2 7.4 | | | | | DragonFly 2.10.1
| | | | | | OpenBSD 4.9 |
| `-----. Mac OS X | | | | |
| \ 10.7 | | | | |
| | | | | | OpenBSD 5.0 |
*--FreeBSD | | | | | | |
| 9.0 | | | | NetBSD | DragonFly 3.0.1
| | FreeBSD | | | 5.1.2 | |
| | 8.3 | | | OpenBSD 5.1 |
| | | Mac OS X | `----. | |
| | | 10.8 | \ | |
| | | | NetBSD 6.0 | | |
| | | | | | | | OpenBSD 5.2 DragonFly 3.2.1
| FreeBSD | | | | | NetBSD | |
| 9.1 | | | | | 5.2 | |
| | | | | \ | |
| | | | | NetBSD | |
| | | | | 6.0.1 | |
| | | | | | OpenBSD 5.3 DragonFly 3.4.1
| | | | | NetBSD | |
| | | | | 6.0.2 | |
| | | | | | |
| | | | `-NetBSD 6.1 | |
| FreeBSD | | | |
| 8.4 | | | |
| | | | |
| | | | |
| | | | |
FreeBSD 10 -current | NetBSD -current OpenBSD -current |
| | | | |
v v v v v
Time
----------------
Time tolerance +/- 6 months, depending 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.
[APL] Apple website [http://www.apple.com/macosx/]
[BSDI] Berkeley Software Design, Inc.
[DFB] DragonFlyBSD Project, The.
[DOC] README, COPYRIGHT on tape.
[FBD] FreeBSD Project, The.
[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.
[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.
[NBD] NetBSD Project, The.
[OBD] OpenBSD Project, The.
[QCU] Salus, Peter H. A quarter century of UNIX.
[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
[USE] Usenet announcement.
[WRS] Wind River Systems, Inc.
[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
Eighth 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] 1979-05-10 [TUHS]
75 2BSD tapes shipped
2.79BSD 1980-04-xx [TUHS]
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 [TUHS]
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 #430 1999-12-13 [SMS]
32V 1978-1[01]-xx [QCU]
3BSD late 1979 [QCU] March 1980 [TUHS]
virtual memory, page replacement,
demand paging
4.0BSD 1980-10-xx
4.1BSD 1981-07-08 [DOC]
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]
1983-08-03 [DOC]
4.3BSD 1986-06-xx [QCU]
1986-04-05 [KB], [DOC]
4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
4.3BSD NET/1 1988-11-xx [QCU]
1989-01-01 [DOC]
4.3BSD Reno 1990-06-29 [QCU], [DOC]
4.3BSD NET/2 1991-06-28 [QCU], [DOC]
BSD/386 ALPHA 1991-12-xx [BSDI]
first code released to people outside BSDI
386BSD 0.0 1992-02-xx [DOC]
BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
386BSD 0.1 1992-07-28 [DOC]
4.4BSD Alpha 1992-07-07
BSD/386 0.9.3 1992-10-xx [BSDI]
first external gamma; G customers
BSD/386 0.9.4 1992-12-xx [BSDI]
would have been 1.0 except for request
for preliminary injunction
BSD/386 1.0 1993-03-xx [BSDI]
injunction denied; first official release
NetBSD 0.8 1993-04-20 [NBD]
4.4BSD 1993-06-01 [USE]
NetBSD 0.9 1993-08-23 [NBD]
FreeBSD 1.0 1993-11-01 [FBD]
FreeBSD 1.0.2 1993-11-14 [FBD]
supersedes 1.0 13 days after release.
BSD/386 1.1 1994-02-xx [BSDI]
4.4BSD Lite 1994-03-01 [USE]
FreeBSD 1.1 1994-05-07 [FBD]
FreeBSD 1.1.5 1994-06-30 [FBD]
FreeBSD 1.1.5.1 1994-07-05 [FBD]
supersedes 1.1.5 5 days after release.
NetBSD 1.0 1994-10-26 [NBD]
386BSD 1.0 1994-11-12 [USE]
FreeBSD 2.0 1994-11-23 [FBD]
BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
FreeBSD 2.0.5 1995-06-10 [FBD]
BSD/OS 2.0.1 1995-06-xx [BSDI]
4.4BSD Lite Release 2 1995-06-xx [44B]
the true final distribution from the CSRG
FreeBSD 2.1.0 1995-11-19 [FBD]
NetBSD 1.1 1995-11-26 [NBD]
BSD/OS 2.1 1996-01-xx [BSDI]
FreeBSD 2.1.5 1996-07-14 [FBD]
NetBSD 1.2 1996-10-04 [NBD]
OpenBSD 2.0 1996-10-18 [OBD]
FreeBSD 2.1.6 1996-11-16 [FBD]
FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
Rhapsody 1997-xx-xx
FreeBSD 2.1.7 1997-02-20 [FBD]
BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
FreeBSD 2.2.0 1997-03-16 [FBD]
FreeBSD 2.2.1 1997-03-25 [FBD]
FreeBSD 2.2.2 1997-05-16 [FBD]
NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
OpenBSD 2.1 1997-06-01 [OBD]
FreeBSD 2.2.5 1997-10-22 [FBD]
OpenBSD 2.2 1997-12-01 [OBD]
NetBSD 1.3 1998-01-04 [NBD]
FreeBSD 2.2.6 1998-03-25 [FBD]
NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
BSD/OS 3.1 1998-03-xx [BSDI]
OpenBSD 2.3 1998-05-19 [OBD]
NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
FreeBSD 2.2.7 1998-07-22 [FBD]
BSD/OS 4.0 1998-08-xx [BSDI]
2-lock MP support, ELF executables
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] (patch release)
FreeBSD 3.1 1999-02-15 [FBD]
BSD/OS 4.0.1 1999-03-xx [BSDI]
NetBSD 1.4 1999-05-12 [NBD]
FreeBSD 3.2 1999-05-17 [FBD]
OpenBSD 2.5 1999-05-19 [OBD]
NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
FreeBSD 3.3 1999-09-17 [FBD]
OpenBSD 2.6 1999-12-01 [OBD]
FreeBSD 3.4 1999-12-20 [FBD]
BSD/OS 4.1 1999-12-xx [BSDI]
FreeBSD 4.0 2000-03-13 [FBD]
NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
OpenBSD 2.7 2000-06-15 [OBD]
FreeBSD 3.5 2000-06-24 [FBD]
FreeBSD 4.1 2000-07-27 [FBD]
FreeBSD 3.5.1 2000-07-28 [FBD]
FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
FreeBSD 4.2 2000-11-21 [FBD]
NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
BSD/OS 4.2 2000-11-29 [BSDI]
OpenBSD 2.8 2000-12-01 [OBD]
NetBSD 1.5 2000-12-06 [NBD]
Mac OS X 10.0 2001-03-24 [APL]
FreeBSD 4.3 2001-04-20 [FBD]
OpenBSD 2.9 2001-06-01 [OBD]
NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
FreeBSD 4.4 2001-09-18 [FBD]
Mac OS X 10.1 2001-09-29 [APL]
OpenBSD 3.0 2001-12-01 [OBD]
FreeBSD 4.5 2002-01-29 [FBD]
BSD/OS 4.3 2002-03-14 [WRS]
OpenBSD 3.1 2002-05-19 [OBD]
FreeBSD 4.6 2002-06-15 [FBD]
NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
Mac OS X 10.2 2002-08-23 [APL]
NetBSD 1.6 2002-09-14 [NBD]
FreeBSD 4.7 2002-10-08 [FBD]
OpenBSD 3.2 2002-11-01 [OBD]
FreeBSD 5.0 2003-01-17 [FBD]
FreeBSD 5.0 is a separate branch off of
-current, similar to 3.0.
FreeBSD 4.8 2003-04-03 [FBD]
NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
OpenBSD 3.3 2003-05-01 [OBD]
BSD/OS 5.0 2003-05-?? [WRS]
FreeBSD 5.1 2003-06-09 [FBD]
Mac OS X 10.3 2003-10-24 [APL]
FreeBSD 4.9 2003-10-28 [FBD]
BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
OpenBSD 3.4 2003-11-01 [OBD]
FreeBSD 5.2 2004-01-12 [FBD]
FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
OpenBSD 3.5 2004-04-01 [OBD]
FreeBSD 4.10 2004-05-27 [FBD]
DragonFly 1.0 2004-07-12 [DFB]
OpenBSD 3.6 2004-10-29 [OBD]
FreeBSD 5.3 2004-11-06 [FBD]
NetBSD 2.0 2004-12-09 [NBD]
FreeBSD 4.11 2005-01-25 [FBD]
DragonFly 1.2.0 2005-04-08 [DFB]
NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
Mac OS X 10.4 2005-04-29 [APL]
FreeBSD 5.4 2005-05-09 [FBD]
OpenBSD 3.7 2005-05-19 [OBD]
NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
OpenBSD 3.8 2005-11-01 [OBD]
FreeBSD 6.0 2005-11-01 [FBD]
NetBSD 2.1 2005-11-02 [NBD]
NetBSD 3.0 2005-12-23 [NBD]
DragonFly 1.4.0 2006-01-08 [DFB]
OpenBSD 3.9 2006-05-01 [OBD]
FreeBSD 6.1 2006-05-08 [FBD]
FreeBSD 5.5 2006-05-25 [FBD]
NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
DragonFly 1.6.0 2006-07-24 [DFB]
OpenBSD 4.0 2006-11-01 [OBD]
NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
NetBSD 3.1 2006-11-04 [NBD]
FreeBSD 6.2 2007-01-15 [FBD]
DragonFly 1.8.0 2007-01-30 [DFB]
OpenBSD 4.1 2007-05-01 [OBD]
DragonFly 1.10.0 2007-08-06 [DFB]
Mac OS X 10.5 2007-10-26 [APL]
OpenBSD 4.2 2007-11-01 [OBD]
NetBSD 4.0 2007-12-19 [NBD]
FreeBSD 6.3 2008-01-18 [FBD]
DragonFly 1.12.0 2008-02-26 [DFB]
FreeBSD 7.0 2008-02-27 [FBD]
OpenBSD 4.3 2008-05-01 [OBD]
DragonFly 2.0.0 2008-07-21 [DFB]
OpenBSD 4.4 2008-11-01 [OBD]
FreeBSD 6.4 2008-11-28 [FBD]
FreeBSD 7.1 2009-01-04 [FBD]
DragonFly 2.2.0 2009-02-17 [DFB]
NetBSD 5.0 2009-04-29 [NBD]
OpenBSD 4.5 2009-05-01 [OBD]
FreeBSD 7.2 2009-05-04 [FBD]
Mac OS X 10.6 2009-06-08 [APL]
NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
DragonFly 2.4.0 2009-09-16 [DFB]
OpenBSD 4.6 2009-10-18 [OBD]
FreeBSD 8.0 2009-11-26 [FBD]
NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
FreeBSD 7.3 2010-03-23 [FBD]
DragonFly 2.6.0 2010-03-28 [DFB]
OpenBSD 4.7 2010-05-19 [OBD]
FreeBSD 8.1 2010-07-24 [FBD]
DragonFly 2.8.2 2010-10-30 [DFB]
OpenBSD 4.8 2010-11-01 [OBD]
NetBSD 5.1 2010-11-19 [NBD]
FreeBSD 7.4 2011-02-24 [FBD]
FreeBSD 8.2 2011-02-24 [FBD]
DragonFly 2.10.1 2011-04-26 [DFB]
OpenBSD 4.9 2011-05-01 [OBD]
Mac OS X 10.7 2011-07-20 [APL]
OpenBSD 5.0 2011-11-01 [OBD]
FreeBSD 9.0 2012-01-12 [FBD]
NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
DragonFly 3.0.1 2012-02-21 [DFB]
FreeBSD 8.3 2012-04-18 [FBD]
OpenBSD 5.1 2012-05-01 [OBD]
Mac OS X 10.8 2012-07-25 [APL]
NetBSD 6.0 2012-10-17 [NBD]
OpenBSD 5.2 2012-11-01 [OBD]
DragonFly 3.2.1 2012-11-02 [DFB]
NetBSD 5.2 2012-12-03 [NBD]
NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
FreeBSD 9.1 2012-12-30 [FBD]
DragonFly 3.4.1 2013-04-29 [DFB]
OpenBSD 5.3 2013-05-01 [OBD]
NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
NetBSD 6.1 2013-05-18 [NBD]
FreeBSD 8.4 2013-06-07 [FBD]
Bibliography
------------------------
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Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
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("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
Acknowledgments
---------------
Josh Gilliam for suggestions, bug fixes, 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) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
$FreeBSD$