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 6.1 | |
283 | | FreeBSD | | | | |
284 | | 8.4 | | NetBSD 6.1.1 | |
286 | FreeBSD | | NetBSD 6.1.2 | |
287 | 9.2 Mac OS X | | | |
288 | 10.9 | | OpenBSD 5.4 |
289 | | | | | DragonFly 3.6.0
291 *--FreeBSD | | NetBSD 6.1.3 | |
295 FreeBSD 11 -current | NetBSD -current OpenBSD -current |
302 Time tolerance +/- 6 months, depending on which book/article you read; if it
303 was the announcement in Usenet or if it was available as tape.
305 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
306 and John Quarterman. The Design and Implementation of
307 the 4.4BSD Operating System.
308 [APL] Apple website [http://www.apple.com/macosx/]
309 [BSDI] Berkeley Software Design, Inc.
310 [DFB] DragonFlyBSD Project, The.
311 [DOC] README, COPYRIGHT on tape.
312 [FBD] FreeBSD Project, The.
313 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
314 Volume 11, Info 4, April, 1987.
315 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
316 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
317 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
318 Changes in the Kernel in 2.9BSD. Second Berkeley Software
319 Distribution UNIX Version 2.9, July, 1983.
320 [NBD] NetBSD Project, The.
321 [OBD] OpenBSD Project, The.
322 [QCU] Salus, Peter H. A quarter century of UNIX.
323 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
324 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
325 [USE] Usenet announcement.
326 [WRS] Wind River Systems, Inc.
327 [dmr] Dennis Ritchie, via E-Mail
332 First Edition 1971-11-03 [QCU]
333 DEC PDP-11/20, Assembler
334 Second Edition 1972-06-12 [QCU]
335 10 UNIX installations
336 Third Edition 1973-02-xx [QCU]
337 Pipes, 16 installations
338 Fourth Edition 1973-11-xx [QCU]
339 rewriting in C effected,
340 above 30 installations
341 Fifth Edition 1974-06-xx [QCU]
342 above 50 installations
343 Sixth Edition 1975-05-xx [QCU]
345 Seventh Edition 1979-01-xx [QCU]
347 Eighth Edition 1985-02-xx [QCU]
348 VAX 11/750, VAX 11/780 [dmr]
349 descended from 4.1c BSD [dmr]
350 descended from 4.1 BSD [44B]
351 scooping-out and replacement of the character-device
352 and networking part by the streams mechanism
354 Ninth Edition 1986-09-xx [QCU]
355 Tenth Edition 1989-10-xx [QCU]
359 PDP-11, Pascal, ex(1)
360 30 free copies of 1BSD sent out
361 35 tapes sold for 50 USD [QCU]
362 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
363 75 2BSD tapes shipped
364 2.79BSD 1980-04-xx [TUHS]
365 2.8BSD 1981-07-xx [KSJ]
367 2.8.1BSD 1982-01-xx [QCU]
368 set of performance improvements
369 2.9BSD 1983-07-xx [KSJ]
370 2.9.1BSD 1983-11-xx [TUHS]
371 2.9BSD-Seismo 1985-08-xx [SMS]
372 2.10BSD 1987-04-xx [KKK]
373 2.10.1BSD 1989-01-xx [SMS]
374 2.11BSD 1992-02-xx [SMS]
375 2.11BSD rev #430 1999-12-13 [SMS]
377 32V 1978-1[01]-xx [QCU]
378 3BSD late 1979 [QCU] March 1980 [TUHS]
379 virtual memory, page replacement,
382 4.1BSD 1981-07-08 [DOC]
384 alpha release, 100 sites, networking [44B]
385 4.1bBSD internal release, fast filesystem [44B]
387 beta release, IPC [44B]
388 4.2BSD 1983-09-xx [QCU]
390 4.3BSD 1986-06-xx [QCU]
391 1986-04-05 [KB], [DOC]
392 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
393 4.3BSD NET/1 1988-11-xx [QCU]
395 4.3BSD Reno 1990-06-29 [QCU], [DOC]
396 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
398 BSD/386 ALPHA 1991-12-xx [BSDI]
399 first code released to people outside BSDI
400 386BSD 0.0 1992-02-xx [DOC]
401 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
402 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
403 386BSD 0.1 1992-07-28 [DOC]
404 4.4BSD Alpha 1992-07-07
405 BSD/386 0.9.3 1992-10-xx [BSDI]
406 first external gamma; G customers
407 BSD/386 0.9.4 1992-12-xx [BSDI]
408 would have been 1.0 except for request
409 for preliminary injunction
410 BSD/386 1.0 1993-03-xx [BSDI]
411 injunction denied; first official release
412 NetBSD 0.8 1993-04-20 [NBD]
413 4.4BSD 1993-06-01 [USE]
414 NetBSD 0.9 1993-08-23 [NBD]
415 FreeBSD 1.0 1993-11-01 [FBD]
416 FreeBSD 1.0.2 1993-11-14 [FBD]
417 supersedes 1.0 13 days after release.
418 BSD/386 1.1 1994-02-xx [BSDI]
419 4.4BSD Lite 1994-03-01 [USE]
420 FreeBSD 1.1 1994-05-07 [FBD]
421 FreeBSD 1.1.5 1994-06-30 [FBD]
422 FreeBSD 1.1.5.1 1994-07-05 [FBD]
423 supersedes 1.1.5 5 days after release.
424 NetBSD 1.0 1994-10-26 [NBD]
425 386BSD 1.0 1994-11-12 [USE]
426 FreeBSD 2.0 1994-11-23 [FBD]
427 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
428 FreeBSD 2.0.5 1995-06-10 [FBD]
429 BSD/OS 2.0.1 1995-06-xx [BSDI]
430 4.4BSD Lite Release 2 1995-06-xx [44B]
431 the true final distribution from the CSRG
432 FreeBSD 2.1.0 1995-11-19 [FBD]
433 NetBSD 1.1 1995-11-26 [NBD]
434 BSD/OS 2.1 1996-01-xx [BSDI]
435 FreeBSD 2.1.5 1996-07-14 [FBD]
436 NetBSD 1.2 1996-10-04 [NBD]
437 OpenBSD 2.0 1996-10-18 [OBD]
438 FreeBSD 2.1.6 1996-11-16 [FBD]
439 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
441 FreeBSD 2.1.7 1997-02-20 [FBD]
442 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
443 FreeBSD 2.2.0 1997-03-16 [FBD]
444 FreeBSD 2.2.1 1997-03-25 [FBD]
445 FreeBSD 2.2.2 1997-05-16 [FBD]
446 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
447 OpenBSD 2.1 1997-06-01 [OBD]
448 FreeBSD 2.2.5 1997-10-22 [FBD]
449 OpenBSD 2.2 1997-12-01 [OBD]
450 NetBSD 1.3 1998-01-04 [NBD]
451 FreeBSD 2.2.6 1998-03-25 [FBD]
452 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
453 BSD/OS 3.1 1998-03-xx [BSDI]
454 OpenBSD 2.3 1998-05-19 [OBD]
455 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
456 FreeBSD 2.2.7 1998-07-22 [FBD]
457 BSD/OS 4.0 1998-08-xx [BSDI]
458 2-lock MP support, ELF executables
459 FreeBSD 3.0 1998-10-16 [FBD]
460 FreeBSD-3.0 is a snapshot from -current,
461 while 3.1 and 3.2 are from 3.x-stable which
462 was branched quite some time after 3.0-release
463 FreeBSD 2.2.8 1998-11-29 [FBD]
464 OpenBSD 2.4 1998-12-01 [OBD]
465 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
466 FreeBSD 3.1 1999-02-15 [FBD]
467 BSD/OS 4.0.1 1999-03-xx [BSDI]
468 NetBSD 1.4 1999-05-12 [NBD]
469 FreeBSD 3.2 1999-05-17 [FBD]
470 OpenBSD 2.5 1999-05-19 [OBD]
471 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
472 FreeBSD 3.3 1999-09-17 [FBD]
473 OpenBSD 2.6 1999-12-01 [OBD]
474 FreeBSD 3.4 1999-12-20 [FBD]
475 BSD/OS 4.1 1999-12-xx [BSDI]
476 FreeBSD 4.0 2000-03-13 [FBD]
477 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
478 OpenBSD 2.7 2000-06-15 [OBD]
479 FreeBSD 3.5 2000-06-24 [FBD]
480 FreeBSD 4.1 2000-07-27 [FBD]
481 FreeBSD 3.5.1 2000-07-28 [FBD]
482 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
483 FreeBSD 4.2 2000-11-21 [FBD]
484 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
485 BSD/OS 4.2 2000-11-29 [BSDI]
486 OpenBSD 2.8 2000-12-01 [OBD]
487 NetBSD 1.5 2000-12-06 [NBD]
488 Mac OS X 10.0 2001-03-24 [APL]
489 FreeBSD 4.3 2001-04-20 [FBD]
490 OpenBSD 2.9 2001-06-01 [OBD]
491 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
492 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
493 FreeBSD 4.4 2001-09-18 [FBD]
494 Mac OS X 10.1 2001-09-29 [APL]
495 OpenBSD 3.0 2001-12-01 [OBD]
496 FreeBSD 4.5 2002-01-29 [FBD]
497 BSD/OS 4.3 2002-03-14 [WRS]
498 OpenBSD 3.1 2002-05-19 [OBD]
499 FreeBSD 4.6 2002-06-15 [FBD]
500 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
501 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
502 Mac OS X 10.2 2002-08-23 [APL]
503 NetBSD 1.6 2002-09-14 [NBD]
504 FreeBSD 4.7 2002-10-08 [FBD]
505 OpenBSD 3.2 2002-11-01 [OBD]
506 FreeBSD 5.0 2003-01-17 [FBD]
507 FreeBSD 5.0 is a separate branch off of
508 -current, similar to 3.0.
509 FreeBSD 4.8 2003-04-03 [FBD]
510 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
511 OpenBSD 3.3 2003-05-01 [OBD]
512 BSD/OS 5.0 2003-05-?? [WRS]
513 FreeBSD 5.1 2003-06-09 [FBD]
514 Mac OS X 10.3 2003-10-24 [APL]
515 FreeBSD 4.9 2003-10-28 [FBD]
516 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
517 OpenBSD 3.4 2003-11-01 [OBD]
518 FreeBSD 5.2 2004-01-12 [FBD]
519 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
520 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
521 OpenBSD 3.5 2004-04-01 [OBD]
522 FreeBSD 4.10 2004-05-27 [FBD]
523 DragonFly 1.0 2004-07-12 [DFB]
524 OpenBSD 3.6 2004-10-29 [OBD]
525 FreeBSD 5.3 2004-11-06 [FBD]
526 NetBSD 2.0 2004-12-09 [NBD]
527 FreeBSD 4.11 2005-01-25 [FBD]
528 DragonFly 1.2.0 2005-04-08 [DFB]
529 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
530 Mac OS X 10.4 2005-04-29 [APL]
531 FreeBSD 5.4 2005-05-09 [FBD]
532 OpenBSD 3.7 2005-05-19 [OBD]
533 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
534 OpenBSD 3.8 2005-11-01 [OBD]
535 FreeBSD 6.0 2005-11-01 [FBD]
536 NetBSD 2.1 2005-11-02 [NBD]
537 NetBSD 3.0 2005-12-23 [NBD]
538 DragonFly 1.4.0 2006-01-08 [DFB]
539 FreeBSD 2.2.9 2006-04-01 [FBD]
540 OpenBSD 3.9 2006-05-01 [OBD]
541 FreeBSD 6.1 2006-05-08 [FBD]
542 FreeBSD 5.5 2006-05-25 [FBD]
543 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
544 DragonFly 1.6.0 2006-07-24 [DFB]
545 OpenBSD 4.0 2006-11-01 [OBD]
546 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
547 NetBSD 3.1 2006-11-04 [NBD]
548 FreeBSD 6.2 2007-01-15 [FBD]
549 DragonFly 1.8.0 2007-01-30 [DFB]
550 OpenBSD 4.1 2007-05-01 [OBD]
551 DragonFly 1.10.0 2007-08-06 [DFB]
552 Mac OS X 10.5 2007-10-26 [APL]
553 OpenBSD 4.2 2007-11-01 [OBD]
554 NetBSD 4.0 2007-12-19 [NBD]
555 FreeBSD 6.3 2008-01-18 [FBD]
556 DragonFly 1.12.0 2008-02-26 [DFB]
557 FreeBSD 7.0 2008-02-27 [FBD]
558 OpenBSD 4.3 2008-05-01 [OBD]
559 DragonFly 2.0.0 2008-07-21 [DFB]
560 OpenBSD 4.4 2008-11-01 [OBD]
561 FreeBSD 6.4 2008-11-28 [FBD]
562 FreeBSD 7.1 2009-01-04 [FBD]
563 DragonFly 2.2.0 2009-02-17 [DFB]
564 NetBSD 5.0 2009-04-29 [NBD]
565 OpenBSD 4.5 2009-05-01 [OBD]
566 FreeBSD 7.2 2009-05-04 [FBD]
567 Mac OS X 10.6 2009-06-08 [APL]
568 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
569 DragonFly 2.4.0 2009-09-16 [DFB]
570 OpenBSD 4.6 2009-10-18 [OBD]
571 FreeBSD 8.0 2009-11-26 [FBD]
572 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
573 FreeBSD 7.3 2010-03-23 [FBD]
574 DragonFly 2.6.0 2010-03-28 [DFB]
575 OpenBSD 4.7 2010-05-19 [OBD]
576 FreeBSD 8.1 2010-07-24 [FBD]
577 DragonFly 2.8.2 2010-10-30 [DFB]
578 OpenBSD 4.8 2010-11-01 [OBD]
579 NetBSD 5.1 2010-11-19 [NBD]
580 FreeBSD 7.4 2011-02-24 [FBD]
581 FreeBSD 8.2 2011-02-24 [FBD]
582 DragonFly 2.10.1 2011-04-26 [DFB]
583 OpenBSD 4.9 2011-05-01 [OBD]
584 Mac OS X 10.7 2011-07-20 [APL]
585 OpenBSD 5.0 2011-11-01 [OBD]
586 FreeBSD 9.0 2012-01-12 [FBD]
587 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
588 DragonFly 3.0.1 2012-02-21 [DFB]
589 FreeBSD 8.3 2012-04-18 [FBD]
590 OpenBSD 5.1 2012-05-01 [OBD]
591 Mac OS X 10.8 2012-07-25 [APL]
592 NetBSD 6.0 2012-10-17 [NBD]
593 OpenBSD 5.2 2012-11-01 [OBD]
594 DragonFly 3.2.1 2012-11-02 [DFB]
595 NetBSD 5.2 2012-12-03 [NBD]
596 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
597 FreeBSD 9.1 2012-12-30 [FBD]
598 DragonFly 3.4.1 2013-04-29 [DFB]
599 OpenBSD 5.3 2013-05-01 [OBD]
600 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
601 NetBSD 6.1 2013-05-18 [NBD]
602 FreeBSD 8.4 2013-06-07 [FBD]
603 NetBSD 6.1.1 2013-08-22 [NBD]
604 NetBSD 5.1.3 2013-09-29 [NBD]
605 NetBSD 5.2.1 2013-09-29 [NBD]
606 FreeBSD 9.2 2013-09-30 [FBD]
607 NetBSD 6.0.3 2013-09-30 [NBD]
608 NetBSD 6.1.2 2013-09-30 [NBD]
609 Mac OS X 10.9 2013-10-22 [APL]
610 OpenBSD 5.4 2013-11-01 [OBD]
611 DragonFly 3.6.0 2013-11-25 [DFB]
612 FreeBSD 10.0 2014-01-20 [FBD]
613 NetBSD 6.1.3 2014-01-27 [NBD]
616 ------------------------
618 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
619 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
620 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
622 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
623 Company, Inc., 1994. ISBN 0-201-54777-5
625 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
626 Quarterman. The Design and Implementation of the 4.4BSD Operating
627 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
629 McKusick, Marshall Kirk, George Neville-Neil. The Design and
630 Implementation of the FreeBSD Operating System.
631 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
633 Doug McIlroy. Research Unix Reader.
635 Michael G. Brown. The Role of BSD in the Development of Unix.
636 Presented to the Tasmanian Unix Special Interest Group of the
637 Australian Computer Society, Hobart, August 1993.
639 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
640 URL: http://www.byte.com/art/9410/sec8/art3.htm
642 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
643 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
645 BSD Release Announcements collection.
646 URL: http://www.FreeBSD.org/releases/
648 BSD Hypertext Man Pages
649 URL: http://www.FreeBSD.org/cgi/man.cgi
651 UNIX history graphing project
652 URL: http://minnie.tuhs.org/Unix_History/index.html
655 URL: http://www.levenez.com/unix/
657 James Howard: The BSD Family Tree
658 URL: http://ezine.daemonnews.org/200104/bsd_family.html
659 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
665 Josh Gilliam for suggestions, bug fixes, and finding very old
666 original BSD announcements from Usenet or tapes.
668 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
671 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
672 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
674 $FreeBSD: head/share/misc/bsd-family-tree 261318 2014-01-31 08:48:25Z maxim $