1 The UNIX system family tree: Research and BSD
2 ---------------------------------------------
14 Sixth Edition (V6) -----*
18 Seventh Edition (V7) |
22 \ 2BSD---------------*
30 4.1BSD --------------> 2.8BSD
32 4.1aBSD -----------\ |
36 *------ 4.1cBSD --------------> 2.9BSD
38 Eighth Edition | 2.9BSD-Seismo
40 +----<--- 4.2BSD 2.9.1BSD
42 +----<--- 4.3BSD -------------> 2.10BSD
44 Ninth Edition | / 2.10.1BSD
45 | 4.3BSD Tahoe-----+ |
55 *---------- 4.3BSD NET/2 -------------------+-------------*
57 386BSD 0.0 | | BSD/386 ALPHA
59 386BSD 0.1 ------------>+ | BSD/386 0.3.[13]
61 | 386BSD 1.0 | | BSD/386 0.9.[34]
64 | | 4.4BSD-Encumbered | |
65 | -NetBSD 0.8 | BSD/386 1.0
67 FreeBSD 1.0 <-----' NetBSD 0.9 | BSD/386 1.1
68 | | .----- 4.4BSD Lite |
69 FreeBSD 1.1 | / / | \ |
71 FreeBSD 1.1.5 .---|--------' / | \ |
73 FreeBSD 1.1.5.1 / | / | \ |
74 | / NetBSD 1.0 <-' | \ |
76 FreeBSD 2.0 <--' | | BSD/OS 2.0
78 FreeBSD 2.0.5 \ | BSD/OS 2.0.1
79 | .-----\------------- 4.4BSD Lite2 |
81 | | .-----|------Rhapsody | | | |
82 | | | | NetBSD 1.3 | | |
83 | | | | OpenBSD 2.3 | |
86 | | | | NetBSD 1.1 ------. BSD/OS 2.1
87 | FreeBSD 2.1.5 | | | \ |
88 | | | | NetBSD 1.2 \ BSD/OS 3.0
89 | FreeBSD 2.1.6 | | | \ OpenBSD 2.0 |
91 | FreeBSD 2.1.6.1 | | | \ | |
93 | FreeBSD 2.1.7 | | | | | |
94 | | | | | NetBSD 1.2.1 | |
95 | FreeBSD 2.1.7.1 | | | | |
98 *-FreeBSD 2.2 | | | | |
100 | FreeBSD 2.2.1 | | | | |
102 | FreeBSD 2.2.2 | | | OpenBSD 2.1 |
104 | FreeBSD 2.2.5 | | | | |
105 | | | | | OpenBSD 2.2 |
106 | | | | NetBSD 1.3 | |
107 | FreeBSD 2.2.6 | | | | | |
108 | | | | | NetBSD 1.3.1 | BSD/OS 3.1
109 | | | | | | OpenBSD 2.3 |
110 | | | | | NetBSD 1.3.2 | |
111 | FreeBSD 2.2.7 | | | | | |
112 | | | | | | | BSD/OS 4.0
113 | FreeBSD 2.2.8 | | | | | |
115 | v | | | | OpenBSD 2.4 |
116 | FreeBSD 2.2.9 | | | | | |
118 FreeBSD 3.0 <--------* | | v | |
119 | | | NetBSD 1.3.3 | |
120 *---FreeBSD 3.1 | | | |
121 | | | | | BSD/OS 4.0.1
122 | FreeBSD 3.2----* | NetBSD 1.4 OpenBSD 2.5 |
126 | FreeBSD 3.3 | | | | NetBSD 1.4.1 | |
127 | | | | | | | OpenBSD 2.6 |
128 | FreeBSD 3.4 | | | | | | |
129 | | | | | | | | BSD/OS 4.1
130 FreeBSD 4.0 | | | | | NetBSD 1.4.2 | |
133 | FreeBSD 3.5 | | | | | OpenBSD 2.7 |
135 | FreeBSD 3.5.1 | | | | | | |
137 *---FreeBSD 4.1 | | | | | | |
139 | FreeBSD 4.1.1 | | / | | | |
141 | FreeBSD 4.2 Darwin/ | NetBSD 1.4.3 | |
142 | | Mac OS X | OpenBSD 2.8 BSD/OS 4.2
145 | | 10.0 NetBSD 1.5 | |
146 | FreeBSD 4.3 | | | | |
147 | | | | | OpenBSD 2.9 |
148 | | | | NetBSD 1.5.1 | |
150 | FreeBSD 4.4-. | | NetBSD 1.5.2 | |
151 | | | Mac OS X | | | |
152 | | | 10.1 | | OpenBSD 3.0 |
153 | FreeBSD 4.5 | | | | | |
154 | | \ | | | | BSD/OS 4.3
155 | FreeBSD 4.6 \ | | | OpenBSD 3.1 |
156 | | \ | | NetBSD 1.5.3 | |
157 | FreeBSD 4.6.2 Mac OS X | | |
159 | FreeBSD 4.7 | | | |
160 | | | NetBSD 1.6 OpenBSD 3.2 |
161 | FreeBSD 4.8 | | | | |
162 | | | | NetBSD 1.6.1 | |
163 | |--------. | | | OpenBSD 3.3 BSD/OS 5.0
165 | FreeBSD 4.9 | | | | OpenBSD 3.4 BSD/OS 5.1 ISE
167 | | | | | NetBSD 1.6.2 |
169 | | | | | | OpenBSD 3.5
171 | FreeBSD 4.10 | | | |
173 | FreeBSD 4.11 | | | |
175 | `-|------|-----------------|---------------------.
179 FreeBSD 5.1 | | | DragonFly 1.0
181 | ----- Mac OS X | | |
185 | FreeBSD 5.2.1 | | | |
187 *-------FreeBSD 5.3 | | | |
188 | | | | OpenBSD 3.6 |
190 | | | | | | | DragonFly 1.2.0
191 | | Mac OS X | | NetBSD 2.0.2 | |
193 | FreeBSD 5.4 | | | | | |
194 | | | | | | OpenBSD 3.7 |
195 | | | | | NetBSD 2.0.3 | |
197 *--FreeBSD | | | | v OpenBSD 3.8 |
200 | | | | | NetBSD 2.1 | |
202 | | | | NetBSD 3.0 | |
203 | | | | | | | | DragonFly 1.4.0
204 | | | | | | | OpenBSD 3.9 |
205 | FreeBSD | | | | | | |
207 | | FreeBSD 5.5 | | | | | |
208 | | | | | NetBSD 3.0.1 | DragonFly 1.6.0
210 | | | | | | OpenBSD 4.0 |
211 | | | | | NetBSD 3.0.2 | |
212 | | | | NetBSD 3.1 | |
213 | FreeBSD 6.2 | | | |
214 | | | | | DragonFly 1.8.0
215 | | | | OpenBSD 4.1 |
216 | | | | | DragonFly 1.10.0
219 | | | | OpenBSD 4.2 |
221 | FreeBSD 6.3 | | | | |
223 *--FreeBSD | | | | | DragonFly 1.12.0
225 | | | | | | OpenBSD 4.3 |
226 | | | | | NetBSD | DragonFly 2.0.0
227 | | FreeBSD | | 4.0.1 OpenBSD 4.4 |
230 | FreeBSD 7.1 | | | |
231 | | | | | DragonFly 2.2.0
232 | FreeBSD 7.2 | NetBSD 5.0 OpenBSD 4.5 |
234 | | Mac OS X | | \ | |
236 | | | | | NetBSD | DragonFly 2.4.0
237 | | | | | 5.0.1 OpenBSD 4.6 |
239 *--FreeBSD | | | | | | |
241 | | FreeBSD | | | NetBSD | |
242 | | 7.3 | | | 5.0.2 | DragonFly 2.6.0
243 | | | | | | OpenBSD 4.7 |
244 | FreeBSD | | | | | |
246 | | | | | | | DragonFly 2.8.2
247 | | | | | | OpenBSD 4.8 |
248 | | | | | *--NetBSD | |
249 | FreeBSD FreeBSD | | | 5.1 | |
250 | 8.2 7.4 | | | | | DragonFly 2.10.1
251 | | | | | | OpenBSD 4.9 |
252 | `-----. Mac OS X | | | | |
254 | | | | | | OpenBSD 5.0 |
255 *--FreeBSD | | | | | | |
256 | 9.0 | | | | NetBSD | DragonFly 3.0.1
257 | | FreeBSD | | | 5.1.2 | |
259 | | | | | | NetBSD | |
260 | | | | | | 5.1.3 | |
261 | | | | | | OpenBSD 5.1 |
262 | | | Mac OS X | `----. | |
264 | | | | NetBSD 6.0 | | |
265 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1
266 | FreeBSD | | | | | NetBSD | |
267 | 9.1 | | | | | 5.2 | |
269 | | | | | | | NetBSD | |
270 | | | | | | | 5.2.1 | |
273 | | | | | | NetBSD | |
274 | | | | | | 6.0.1 | |
276 | | | | | | NetBSD | |
277 | | | | | | 6.0.2 | |
278 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1
279 | | | | | | NetBSD | |
280 | | | | | | 6.0.3 | |
282 | | | | | | NetBSD | |
283 | | | | | | 6.0.4 | |
285 | | | | | | NetBSD | |
286 | | | | | | 6.0.5 | |
288 | | | | | |`-NetBSD 6.1 | |
289 | | FreeBSD | | | | |
290 | | 8.4 | | NetBSD 6.1.1 | |
292 | FreeBSD | | NetBSD 6.1.2 | |
293 | 9.2 Mac OS X | | | |
294 | | 10.9 | | OpenBSD 5.4 |
295 | `-----. | | | | DragonFly 3.6.0
297 *--FreeBSD | | | NetBSD 6.1.3 | |
299 | | | | | | DragonFly 3.6.1
302 | | | | | | DragonFly 3.6.2
303 | | | | NetBSD 6.1.4 | |
305 | | | | OpenBSD 5.5 |
306 | | | | | DragonFly 3.8.0
317 FreeBSD 11 -current | NetBSD -current OpenBSD -current DragonFly -current
324 Time tolerance +/- 6 months, depending on which book/article you read; if it
325 was the announcement in Usenet or if it was available as tape.
327 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
328 and John Quarterman. The Design and Implementation of
329 the 4.4BSD Operating System.
330 [APL] Apple website [http://www.apple.com/macosx/]
331 [BSDI] Berkeley Software Design, Inc.
332 [DFB] DragonFlyBSD Project, The.
333 [DOC] README, COPYRIGHT on tape.
334 [FBD] FreeBSD Project, The.
335 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
336 Volume 11, Info 4, April, 1987.
337 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
338 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
339 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
340 Changes in the Kernel in 2.9BSD. Second Berkeley Software
341 Distribution UNIX Version 2.9, July, 1983.
342 [NBD] NetBSD Project, The.
343 [OBD] OpenBSD Project, The.
344 [QCU] Salus, Peter H. A quarter century of UNIX.
345 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
346 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
347 [USE] Usenet announcement.
348 [WRS] Wind River Systems, Inc.
349 [dmr] Dennis Ritchie, via E-Mail
354 First Edition 1971-11-03 [QCU]
355 DEC PDP-11/20, Assembler
356 Second Edition 1972-06-12 [QCU]
357 10 UNIX installations
358 Third Edition 1973-02-xx [QCU]
359 Pipes, 16 installations
360 Fourth Edition 1973-11-xx [QCU]
361 rewriting in C effected,
362 above 30 installations
363 Fifth Edition 1974-06-xx [QCU]
364 above 50 installations
365 Sixth Edition 1975-05-xx [QCU]
367 Seventh Edition 1979-01-xx [QCU]
369 Eighth Edition 1985-02-xx [QCU]
370 VAX 11/750, VAX 11/780 [dmr]
371 descended from 4.1c BSD [dmr]
372 descended from 4.1 BSD [44B]
373 scooping-out and replacement of the character-device
374 and networking part by the streams mechanism
376 Ninth Edition 1986-09-xx [QCU]
377 Tenth Edition 1989-10-xx [QCU]
381 PDP-11, Pascal, ex(1)
382 30 free copies of 1BSD sent out
383 35 tapes sold for 50 USD [QCU]
384 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
385 75 2BSD tapes shipped
386 2.79BSD 1980-04-xx [TUHS]
387 2.8BSD 1981-07-xx [KSJ]
389 2.8.1BSD 1982-01-xx [QCU]
390 set of performance improvements
391 2.9BSD 1983-07-xx [KSJ]
392 2.9.1BSD 1983-11-xx [TUHS]
393 2.9BSD-Seismo 1985-08-xx [SMS]
394 2.10BSD 1987-04-xx [KKK]
395 2.10.1BSD 1989-01-xx [SMS]
396 2.11BSD 1992-02-xx [SMS]
397 2.11BSD rev #430 1999-12-13 [SMS]
399 32V 1978-1[01]-xx [QCU]
400 3BSD late 1979 [QCU] March 1980 [TUHS]
401 virtual memory, page replacement,
404 4.1BSD 1981-07-08 [DOC]
406 alpha release, 100 sites, networking [44B]
407 4.1bBSD internal release, fast filesystem [44B]
409 beta release, IPC [44B]
410 4.2BSD 1983-09-xx [QCU]
412 4.3BSD 1986-06-xx [QCU]
413 1986-04-05 [KB], [DOC]
414 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
415 4.3BSD NET/1 1988-11-xx [QCU]
417 4.3BSD Reno 1990-06-29 [QCU], [DOC]
418 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
420 BSD/386 ALPHA 1991-12-xx [BSDI]
421 first code released to people outside BSDI
422 386BSD 0.0 1992-02-xx [DOC]
423 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
424 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
425 386BSD 0.1 1992-07-28 [DOC]
426 4.4BSD Alpha 1992-07-07
427 BSD/386 0.9.3 1992-10-xx [BSDI]
428 first external gamma; G customers
429 BSD/386 0.9.4 1992-12-xx [BSDI]
430 would have been 1.0 except for request
431 for preliminary injunction
432 BSD/386 1.0 1993-03-xx [BSDI]
433 injunction denied; first official release
434 NetBSD 0.8 1993-04-20 [NBD]
435 4.4BSD 1993-06-01 [USE]
436 NetBSD 0.9 1993-08-23 [NBD]
437 FreeBSD 1.0 1993-11-01 [FBD]
438 FreeBSD 1.0.2 1993-11-14 [FBD]
439 supersedes 1.0 13 days after release.
440 BSD/386 1.1 1994-02-xx [BSDI]
441 4.4BSD Lite 1994-03-01 [USE]
442 FreeBSD 1.1 1994-05-07 [FBD]
443 FreeBSD 1.1.5 1994-06-30 [FBD]
444 FreeBSD 1.1.5.1 1994-07-05 [FBD]
445 supersedes 1.1.5 5 days after release.
446 NetBSD 1.0 1994-10-26 [NBD]
447 386BSD 1.0 1994-11-12 [USE]
448 FreeBSD 2.0 1994-11-23 [FBD]
449 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
450 FreeBSD 2.0.5 1995-06-10 [FBD]
451 BSD/OS 2.0.1 1995-06-xx [BSDI]
452 4.4BSD Lite Release 2 1995-06-xx [44B]
453 the true final distribution from the CSRG
454 FreeBSD 2.1.0 1995-11-19 [FBD]
455 NetBSD 1.1 1995-11-26 [NBD]
456 BSD/OS 2.1 1996-01-xx [BSDI]
457 FreeBSD 2.1.5 1996-07-14 [FBD]
458 NetBSD 1.2 1996-10-04 [NBD]
459 OpenBSD 2.0 1996-10-18 [OBD]
460 FreeBSD 2.1.6 1996-11-16 [FBD]
461 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
463 FreeBSD 2.1.7 1997-02-20 [FBD]
464 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
465 FreeBSD 2.2.0 1997-03-16 [FBD]
466 FreeBSD 2.2.1 1997-03-25 [FBD]
467 FreeBSD 2.2.2 1997-05-16 [FBD]
468 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
469 OpenBSD 2.1 1997-06-01 [OBD]
470 FreeBSD 2.2.5 1997-10-22 [FBD]
471 OpenBSD 2.2 1997-12-01 [OBD]
472 NetBSD 1.3 1998-01-04 [NBD]
473 FreeBSD 2.2.6 1998-03-25 [FBD]
474 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
475 BSD/OS 3.1 1998-03-xx [BSDI]
476 OpenBSD 2.3 1998-05-19 [OBD]
477 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
478 FreeBSD 2.2.7 1998-07-22 [FBD]
479 BSD/OS 4.0 1998-08-xx [BSDI]
480 2-lock MP support, ELF executables
481 FreeBSD 3.0 1998-10-16 [FBD]
482 FreeBSD-3.0 is a snapshot from -current,
483 while 3.1 and 3.2 are from 3.x-stable which
484 was branched quite some time after 3.0-release
485 FreeBSD 2.2.8 1998-11-29 [FBD]
486 OpenBSD 2.4 1998-12-01 [OBD]
487 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
488 FreeBSD 3.1 1999-02-15 [FBD]
489 BSD/OS 4.0.1 1999-03-xx [BSDI]
490 NetBSD 1.4 1999-05-12 [NBD]
491 FreeBSD 3.2 1999-05-17 [FBD]
492 OpenBSD 2.5 1999-05-19 [OBD]
493 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
494 FreeBSD 3.3 1999-09-17 [FBD]
495 OpenBSD 2.6 1999-12-01 [OBD]
496 FreeBSD 3.4 1999-12-20 [FBD]
497 BSD/OS 4.1 1999-12-xx [BSDI]
498 FreeBSD 4.0 2000-03-13 [FBD]
499 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
500 OpenBSD 2.7 2000-06-15 [OBD]
501 FreeBSD 3.5 2000-06-24 [FBD]
502 FreeBSD 4.1 2000-07-27 [FBD]
503 FreeBSD 3.5.1 2000-07-28 [FBD]
504 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
505 FreeBSD 4.2 2000-11-21 [FBD]
506 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
507 BSD/OS 4.2 2000-11-29 [BSDI]
508 OpenBSD 2.8 2000-12-01 [OBD]
509 NetBSD 1.5 2000-12-06 [NBD]
510 Mac OS X 10.0 2001-03-24 [APL]
511 FreeBSD 4.3 2001-04-20 [FBD]
512 OpenBSD 2.9 2001-06-01 [OBD]
513 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
514 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
515 FreeBSD 4.4 2001-09-18 [FBD]
516 Mac OS X 10.1 2001-09-29 [APL]
517 OpenBSD 3.0 2001-12-01 [OBD]
518 FreeBSD 4.5 2002-01-29 [FBD]
519 BSD/OS 4.3 2002-03-14 [WRS]
520 OpenBSD 3.1 2002-05-19 [OBD]
521 FreeBSD 4.6 2002-06-15 [FBD]
522 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
523 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
524 Mac OS X 10.2 2002-08-23 [APL]
525 NetBSD 1.6 2002-09-14 [NBD]
526 FreeBSD 4.7 2002-10-08 [FBD]
527 OpenBSD 3.2 2002-11-01 [OBD]
528 FreeBSD 5.0 2003-01-17 [FBD]
529 FreeBSD 5.0 is a separate branch off of
530 -current, similar to 3.0.
531 FreeBSD 4.8 2003-04-03 [FBD]
532 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
533 OpenBSD 3.3 2003-05-01 [OBD]
534 BSD/OS 5.0 2003-05-?? [WRS]
535 FreeBSD 5.1 2003-06-09 [FBD]
536 Mac OS X 10.3 2003-10-24 [APL]
537 FreeBSD 4.9 2003-10-28 [FBD]
538 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
539 OpenBSD 3.4 2003-11-01 [OBD]
540 FreeBSD 5.2 2004-01-12 [FBD]
541 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
542 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
543 OpenBSD 3.5 2004-04-01 [OBD]
544 FreeBSD 4.10 2004-05-27 [FBD]
545 DragonFly 1.0 2004-07-12 [DFB]
546 OpenBSD 3.6 2004-10-29 [OBD]
547 FreeBSD 5.3 2004-11-06 [FBD]
548 NetBSD 2.0 2004-12-09 [NBD]
549 FreeBSD 4.11 2005-01-25 [FBD]
550 DragonFly 1.2.0 2005-04-08 [DFB]
551 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
552 Mac OS X 10.4 2005-04-29 [APL]
553 FreeBSD 5.4 2005-05-09 [FBD]
554 OpenBSD 3.7 2005-05-19 [OBD]
555 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
556 OpenBSD 3.8 2005-11-01 [OBD]
557 FreeBSD 6.0 2005-11-01 [FBD]
558 NetBSD 2.1 2005-11-02 [NBD]
559 NetBSD 3.0 2005-12-23 [NBD]
560 DragonFly 1.4.0 2006-01-08 [DFB]
561 FreeBSD 2.2.9 2006-04-01 [FBD]
562 OpenBSD 3.9 2006-05-01 [OBD]
563 FreeBSD 6.1 2006-05-08 [FBD]
564 FreeBSD 5.5 2006-05-25 [FBD]
565 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
566 DragonFly 1.6.0 2006-07-24 [DFB]
567 OpenBSD 4.0 2006-11-01 [OBD]
568 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
569 NetBSD 3.1 2006-11-04 [NBD]
570 FreeBSD 6.2 2007-01-15 [FBD]
571 DragonFly 1.8.0 2007-01-30 [DFB]
572 OpenBSD 4.1 2007-05-01 [OBD]
573 DragonFly 1.10.0 2007-08-06 [DFB]
574 Mac OS X 10.5 2007-10-26 [APL]
575 OpenBSD 4.2 2007-11-01 [OBD]
576 NetBSD 4.0 2007-12-19 [NBD]
577 FreeBSD 6.3 2008-01-18 [FBD]
578 DragonFly 1.12.0 2008-02-26 [DFB]
579 FreeBSD 7.0 2008-02-27 [FBD]
580 OpenBSD 4.3 2008-05-01 [OBD]
581 DragonFly 2.0.0 2008-07-21 [DFB]
582 OpenBSD 4.4 2008-11-01 [OBD]
583 FreeBSD 6.4 2008-11-28 [FBD]
584 FreeBSD 7.1 2009-01-04 [FBD]
585 DragonFly 2.2.0 2009-02-17 [DFB]
586 NetBSD 5.0 2009-04-29 [NBD]
587 OpenBSD 4.5 2009-05-01 [OBD]
588 FreeBSD 7.2 2009-05-04 [FBD]
589 Mac OS X 10.6 2009-06-08 [APL]
590 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
591 DragonFly 2.4.0 2009-09-16 [DFB]
592 OpenBSD 4.6 2009-10-18 [OBD]
593 FreeBSD 8.0 2009-11-26 [FBD]
594 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
595 FreeBSD 7.3 2010-03-23 [FBD]
596 DragonFly 2.6.0 2010-03-28 [DFB]
597 OpenBSD 4.7 2010-05-19 [OBD]
598 FreeBSD 8.1 2010-07-24 [FBD]
599 DragonFly 2.8.2 2010-10-30 [DFB]
600 OpenBSD 4.8 2010-11-01 [OBD]
601 NetBSD 5.1 2010-11-19 [NBD]
602 FreeBSD 7.4 2011-02-24 [FBD]
603 FreeBSD 8.2 2011-02-24 [FBD]
604 DragonFly 2.10.1 2011-04-26 [DFB]
605 OpenBSD 4.9 2011-05-01 [OBD]
606 Mac OS X 10.7 2011-07-20 [APL]
607 OpenBSD 5.0 2011-11-01 [OBD]
608 FreeBSD 9.0 2012-01-12 [FBD]
609 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
610 DragonFly 3.0.1 2012-02-21 [DFB]
611 FreeBSD 8.3 2012-04-18 [FBD]
612 OpenBSD 5.1 2012-05-01 [OBD]
613 Mac OS X 10.8 2012-07-25 [APL]
614 NetBSD 6.0 2012-10-17 [NBD]
615 OpenBSD 5.2 2012-11-01 [OBD]
616 DragonFly 3.2.1 2012-11-02 [DFB]
617 NetBSD 5.2 2012-12-03 [NBD]
618 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
619 FreeBSD 9.1 2012-12-30 [FBD]
620 DragonFly 3.4.1 2013-04-29 [DFB]
621 OpenBSD 5.3 2013-05-01 [OBD]
622 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
623 NetBSD 6.1 2013-05-18 [NBD]
624 FreeBSD 8.4 2013-06-07 [FBD]
625 NetBSD 6.1.1 2013-08-22 [NBD]
626 NetBSD 5.1.3 2013-09-29 [NBD]
627 NetBSD 5.2.1 2013-09-29 [NBD]
628 FreeBSD 9.2 2013-09-30 [FBD]
629 NetBSD 6.0.3 2013-09-30 [NBD]
630 NetBSD 6.1.2 2013-09-30 [NBD]
631 Mac OS X 10.9 2013-10-22 [APL]
632 OpenBSD 5.4 2013-11-01 [OBD]
633 DragonFly 3.6.0 2013-11-25 [DFB]
634 FreeBSD 10.0 2014-01-20 [FBD]
635 NetBSD 6.0.4 2014-01-27 [NBD]
636 NetBSD 6.1.3 2014-01-27 [NBD]
637 DragonFly 3.6.1 2014-02-22 [DFB]
638 DragonFly 3.6.2 2014-04-10 [DFB]
639 NetBSD 6.0.5 2014-04-19 [NDB]
640 NetBSD 6.1.4 2014-04-19 [NDB]
641 OpenBSD 5.5 2014-05-01 [OBD]
642 DragonFly 3.8.0 2014-06-04 [DFB]
643 FreeBSD 9.3 2014-07-05 [FBD]
646 ------------------------
648 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
649 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
650 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
652 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
653 Company, Inc., 1994. ISBN 0-201-54777-5
655 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
656 Quarterman. The Design and Implementation of the 4.4BSD Operating
657 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
659 McKusick, Marshall Kirk, George Neville-Neil. The Design and
660 Implementation of the FreeBSD Operating System.
661 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
663 Doug McIlroy. Research Unix Reader.
665 Michael G. Brown. The Role of BSD in the Development of Unix.
666 Presented to the Tasmanian Unix Special Interest Group of the
667 Australian Computer Society, Hobart, August 1993.
669 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
670 URL: http://www.byte.com/art/9410/sec8/art3.htm
672 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
673 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
675 BSD Release Announcements collection.
676 URL: http://www.FreeBSD.org/releases/
678 BSD Hypertext Man Pages
679 URL: http://www.FreeBSD.org/cgi/man.cgi
681 UNIX history graphing project
682 URL: http://minnie.tuhs.org/Unix_History/index.html
685 URL: http://www.levenez.com/unix/
687 James Howard: The BSD Family Tree
688 URL: http://ezine.daemonnews.org/200104/bsd_family.html
689 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
695 Josh Gilliam for suggestions, bug fixes, and finding very old
696 original BSD announcements from Usenet or tapes.
698 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
701 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
702 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree