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 |
307 | | | | | | | DragonFly 3.8.0
310 | | | | | | | DragonFly 3.8.1
313 | | | | | | | DragonFly 3.6.3
315 | | FreeBSD | | | | |
317 | | | | NetBSD 6.1.5 | DragonFly 3.8.2
320 | | | | OpenBSD 5.6 |
322 | 10.1 | | | DragonFly 4.0.1
324 | | | | DragonFly 4.0.2
326 | | | | DragonFly 4.0.3
328 | | | | DragonFly 4.0.4
330 | | | | DragonFly 4.0.5
333 | | | | DragonFly 4.2.0
335 FreeBSD 11 -current | NetBSD -current OpenBSD -current DragonFly -current
342 Time tolerance +/- 6 months, depending on which book/article you read; if it
343 was the announcement in Usenet or if it was available as tape.
345 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
346 and John Quarterman. The Design and Implementation of
347 the 4.4BSD Operating System.
348 [APL] Apple website [http://www.apple.com/macosx/]
349 [BSDI] Berkeley Software Design, Inc.
350 [DFB] DragonFlyBSD Project, The.
351 [DOC] README, COPYRIGHT on tape.
352 [FBD] FreeBSD Project, The.
353 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
354 Volume 11, Info 4, April, 1987.
355 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
356 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
357 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
358 Changes in the Kernel in 2.9BSD. Second Berkeley Software
359 Distribution UNIX Version 2.9, July, 1983.
360 [NBD] NetBSD Project, The.
361 [OBD] OpenBSD Project, The.
362 [QCU] Salus, Peter H. A quarter century of UNIX.
363 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
364 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
365 [USE] Usenet announcement.
366 [WRS] Wind River Systems, Inc.
367 [dmr] Dennis Ritchie, via E-Mail
372 First Edition 1971-11-03 [QCU]
373 DEC PDP-11/20, Assembler
374 Second Edition 1972-06-12 [QCU]
375 10 UNIX installations
376 Third Edition 1973-02-xx [QCU]
377 Pipes, 16 installations
378 Fourth Edition 1973-11-xx [QCU]
379 rewriting in C effected,
380 above 30 installations
381 Fifth Edition 1974-06-xx [QCU]
382 above 50 installations
383 Sixth Edition 1975-05-xx [QCU]
385 Seventh Edition 1979-01-xx [QCU]
387 Eighth Edition 1985-02-xx [QCU]
388 VAX 11/750, VAX 11/780 [dmr]
389 descended from 4.1c BSD [dmr]
390 descended from 4.1 BSD [44B]
391 scooping-out and replacement of the character-device
392 and networking part by the streams mechanism
394 Ninth Edition 1986-09-xx [QCU]
395 Tenth Edition 1989-10-xx [QCU]
399 PDP-11, Pascal, ex(1)
400 30 free copies of 1BSD sent out
401 35 tapes sold for 50 USD [QCU]
402 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
403 75 2BSD tapes shipped
404 2.79BSD 1980-04-xx [TUHS]
405 2.8BSD 1981-07-xx [KSJ]
407 2.8.1BSD 1982-01-xx [QCU]
408 set of performance improvements
409 2.9BSD 1983-07-xx [KSJ]
410 2.9.1BSD 1983-11-xx [TUHS]
411 2.9BSD-Seismo 1985-08-xx [SMS]
412 2.10BSD 1987-04-xx [KKK]
413 2.10.1BSD 1989-01-xx [SMS]
414 2.11BSD 1992-02-xx [SMS]
415 2.11BSD rev #430 1999-12-13 [SMS]
417 32V 1978-1[01]-xx [QCU]
418 3BSD late 1979 [QCU] March 1980 [TUHS]
419 virtual memory, page replacement,
422 4.1BSD 1981-07-08 [DOC]
424 alpha release, 100 sites, networking [44B]
425 4.1bBSD internal release, fast filesystem [44B]
427 beta release, IPC [44B]
428 4.2BSD 1983-09-xx [QCU]
430 4.3BSD 1986-06-xx [QCU]
431 1986-04-05 [KB], [DOC]
432 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
433 4.3BSD NET/1 1988-11-xx [QCU]
435 4.3BSD Reno 1990-06-29 [QCU], [DOC]
436 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
438 BSD/386 ALPHA 1991-12-xx [BSDI]
439 first code released to people outside BSDI
440 386BSD 0.0 1992-02-xx [DOC]
441 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
442 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
443 386BSD 0.1 1992-07-28 [DOC]
444 4.4BSD Alpha 1992-07-07
445 BSD/386 0.9.3 1992-10-xx [BSDI]
446 first external gamma; G customers
447 BSD/386 0.9.4 1992-12-xx [BSDI]
448 would have been 1.0 except for request
449 for preliminary injunction
450 BSD/386 1.0 1993-03-xx [BSDI]
451 injunction denied; first official release
452 NetBSD 0.8 1993-04-20 [NBD]
453 4.4BSD 1993-06-01 [USE]
454 NetBSD 0.9 1993-08-23 [NBD]
455 FreeBSD 1.0 1993-11-01 [FBD]
456 FreeBSD 1.0.2 1993-11-14 [FBD]
457 supersedes 1.0 13 days after release.
458 BSD/386 1.1 1994-02-xx [BSDI]
459 4.4BSD Lite 1994-03-01 [USE]
460 FreeBSD 1.1 1994-05-07 [FBD]
461 FreeBSD 1.1.5 1994-06-30 [FBD]
462 FreeBSD 1.1.5.1 1994-07-05 [FBD]
463 supersedes 1.1.5 5 days after release.
464 NetBSD 1.0 1994-10-26 [NBD]
465 386BSD 1.0 1994-11-12 [USE]
466 FreeBSD 2.0 1994-11-23 [FBD]
467 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
468 FreeBSD 2.0.5 1995-06-10 [FBD]
469 BSD/OS 2.0.1 1995-06-xx [BSDI]
470 4.4BSD Lite Release 2 1995-06-xx [44B]
471 the true final distribution from the CSRG
472 FreeBSD 2.1.0 1995-11-19 [FBD]
473 NetBSD 1.1 1995-11-26 [NBD]
474 BSD/OS 2.1 1996-01-xx [BSDI]
475 FreeBSD 2.1.5 1996-07-14 [FBD]
476 NetBSD 1.2 1996-10-04 [NBD]
477 OpenBSD 2.0 1996-10-18 [OBD]
478 FreeBSD 2.1.6 1996-11-16 [FBD]
479 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
481 FreeBSD 2.1.7 1997-02-20 [FBD]
482 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
483 FreeBSD 2.2.0 1997-03-16 [FBD]
484 FreeBSD 2.2.1 1997-03-25 [FBD]
485 FreeBSD 2.2.2 1997-05-16 [FBD]
486 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
487 OpenBSD 2.1 1997-06-01 [OBD]
488 FreeBSD 2.2.5 1997-10-22 [FBD]
489 OpenBSD 2.2 1997-12-01 [OBD]
490 NetBSD 1.3 1998-01-04 [NBD]
491 FreeBSD 2.2.6 1998-03-25 [FBD]
492 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
493 BSD/OS 3.1 1998-03-xx [BSDI]
494 OpenBSD 2.3 1998-05-19 [OBD]
495 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
496 FreeBSD 2.2.7 1998-07-22 [FBD]
497 BSD/OS 4.0 1998-08-xx [BSDI]
498 2-lock MP support, ELF executables
499 FreeBSD 3.0 1998-10-16 [FBD]
500 FreeBSD-3.0 is a snapshot from -current,
501 while 3.1 and 3.2 are from 3.x-stable which
502 was branched quite some time after 3.0-release
503 FreeBSD 2.2.8 1998-11-29 [FBD]
504 OpenBSD 2.4 1998-12-01 [OBD]
505 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
506 FreeBSD 3.1 1999-02-15 [FBD]
507 BSD/OS 4.0.1 1999-03-xx [BSDI]
508 NetBSD 1.4 1999-05-12 [NBD]
509 FreeBSD 3.2 1999-05-17 [FBD]
510 OpenBSD 2.5 1999-05-19 [OBD]
511 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
512 FreeBSD 3.3 1999-09-17 [FBD]
513 OpenBSD 2.6 1999-12-01 [OBD]
514 FreeBSD 3.4 1999-12-20 [FBD]
515 BSD/OS 4.1 1999-12-xx [BSDI]
516 FreeBSD 4.0 2000-03-13 [FBD]
517 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
518 OpenBSD 2.7 2000-06-15 [OBD]
519 FreeBSD 3.5 2000-06-24 [FBD]
520 FreeBSD 4.1 2000-07-27 [FBD]
521 FreeBSD 3.5.1 2000-07-28 [FBD]
522 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
523 FreeBSD 4.2 2000-11-21 [FBD]
524 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
525 BSD/OS 4.2 2000-11-29 [BSDI]
526 OpenBSD 2.8 2000-12-01 [OBD]
527 NetBSD 1.5 2000-12-06 [NBD]
528 Mac OS X 10.0 2001-03-24 [APL]
529 FreeBSD 4.3 2001-04-20 [FBD]
530 OpenBSD 2.9 2001-06-01 [OBD]
531 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
532 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
533 FreeBSD 4.4 2001-09-18 [FBD]
534 Mac OS X 10.1 2001-09-29 [APL]
535 OpenBSD 3.0 2001-12-01 [OBD]
536 FreeBSD 4.5 2002-01-29 [FBD]
537 BSD/OS 4.3 2002-03-14 [WRS]
538 OpenBSD 3.1 2002-05-19 [OBD]
539 FreeBSD 4.6 2002-06-15 [FBD]
540 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
541 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
542 Mac OS X 10.2 2002-08-23 [APL]
543 NetBSD 1.6 2002-09-14 [NBD]
544 FreeBSD 4.7 2002-10-08 [FBD]
545 OpenBSD 3.2 2002-11-01 [OBD]
546 FreeBSD 5.0 2003-01-17 [FBD]
547 FreeBSD 5.0 is a separate branch off of
548 -current, similar to 3.0.
549 FreeBSD 4.8 2003-04-03 [FBD]
550 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
551 OpenBSD 3.3 2003-05-01 [OBD]
552 BSD/OS 5.0 2003-05-?? [WRS]
553 FreeBSD 5.1 2003-06-09 [FBD]
554 Mac OS X 10.3 2003-10-24 [APL]
555 FreeBSD 4.9 2003-10-28 [FBD]
556 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
557 OpenBSD 3.4 2003-11-01 [OBD]
558 FreeBSD 5.2 2004-01-12 [FBD]
559 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
560 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
561 OpenBSD 3.5 2004-04-01 [OBD]
562 FreeBSD 4.10 2004-05-27 [FBD]
563 DragonFly 1.0 2004-07-12 [DFB]
564 OpenBSD 3.6 2004-10-29 [OBD]
565 FreeBSD 5.3 2004-11-06 [FBD]
566 NetBSD 2.0 2004-12-09 [NBD]
567 FreeBSD 4.11 2005-01-25 [FBD]
568 DragonFly 1.2.0 2005-04-08 [DFB]
569 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
570 Mac OS X 10.4 2005-04-29 [APL]
571 FreeBSD 5.4 2005-05-09 [FBD]
572 OpenBSD 3.7 2005-05-19 [OBD]
573 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
574 OpenBSD 3.8 2005-11-01 [OBD]
575 FreeBSD 6.0 2005-11-01 [FBD]
576 NetBSD 2.1 2005-11-02 [NBD]
577 NetBSD 3.0 2005-12-23 [NBD]
578 DragonFly 1.4.0 2006-01-08 [DFB]
579 FreeBSD 2.2.9 2006-04-01 [FBD]
580 OpenBSD 3.9 2006-05-01 [OBD]
581 FreeBSD 6.1 2006-05-08 [FBD]
582 FreeBSD 5.5 2006-05-25 [FBD]
583 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
584 DragonFly 1.6.0 2006-07-24 [DFB]
585 OpenBSD 4.0 2006-11-01 [OBD]
586 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
587 NetBSD 3.1 2006-11-04 [NBD]
588 FreeBSD 6.2 2007-01-15 [FBD]
589 DragonFly 1.8.0 2007-01-30 [DFB]
590 OpenBSD 4.1 2007-05-01 [OBD]
591 DragonFly 1.10.0 2007-08-06 [DFB]
592 Mac OS X 10.5 2007-10-26 [APL]
593 OpenBSD 4.2 2007-11-01 [OBD]
594 NetBSD 4.0 2007-12-19 [NBD]
595 FreeBSD 6.3 2008-01-18 [FBD]
596 DragonFly 1.12.0 2008-02-26 [DFB]
597 FreeBSD 7.0 2008-02-27 [FBD]
598 OpenBSD 4.3 2008-05-01 [OBD]
599 DragonFly 2.0.0 2008-07-21 [DFB]
600 OpenBSD 4.4 2008-11-01 [OBD]
601 FreeBSD 6.4 2008-11-28 [FBD]
602 FreeBSD 7.1 2009-01-04 [FBD]
603 DragonFly 2.2.0 2009-02-17 [DFB]
604 NetBSD 5.0 2009-04-29 [NBD]
605 OpenBSD 4.5 2009-05-01 [OBD]
606 FreeBSD 7.2 2009-05-04 [FBD]
607 Mac OS X 10.6 2009-06-08 [APL]
608 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
609 DragonFly 2.4.0 2009-09-16 [DFB]
610 OpenBSD 4.6 2009-10-18 [OBD]
611 FreeBSD 8.0 2009-11-26 [FBD]
612 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
613 FreeBSD 7.3 2010-03-23 [FBD]
614 DragonFly 2.6.0 2010-03-28 [DFB]
615 OpenBSD 4.7 2010-05-19 [OBD]
616 FreeBSD 8.1 2010-07-24 [FBD]
617 DragonFly 2.8.2 2010-10-30 [DFB]
618 OpenBSD 4.8 2010-11-01 [OBD]
619 NetBSD 5.1 2010-11-19 [NBD]
620 FreeBSD 7.4 2011-02-24 [FBD]
621 FreeBSD 8.2 2011-02-24 [FBD]
622 DragonFly 2.10.1 2011-04-26 [DFB]
623 OpenBSD 4.9 2011-05-01 [OBD]
624 Mac OS X 10.7 2011-07-20 [APL]
625 OpenBSD 5.0 2011-11-01 [OBD]
626 FreeBSD 9.0 2012-01-12 [FBD]
627 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
628 DragonFly 3.0.1 2012-02-21 [DFB]
629 FreeBSD 8.3 2012-04-18 [FBD]
630 OpenBSD 5.1 2012-05-01 [OBD]
631 Mac OS X 10.8 2012-07-25 [APL]
632 NetBSD 6.0 2012-10-17 [NBD]
633 OpenBSD 5.2 2012-11-01 [OBD]
634 DragonFly 3.2.1 2012-11-02 [DFB]
635 NetBSD 5.2 2012-12-03 [NBD]
636 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
637 FreeBSD 9.1 2012-12-30 [FBD]
638 DragonFly 3.4.1 2013-04-29 [DFB]
639 OpenBSD 5.3 2013-05-01 [OBD]
640 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
641 NetBSD 6.1 2013-05-18 [NBD]
642 FreeBSD 8.4 2013-06-07 [FBD]
643 NetBSD 6.1.1 2013-08-22 [NBD]
644 NetBSD 5.1.3 2013-09-29 [NBD]
645 NetBSD 5.2.1 2013-09-29 [NBD]
646 FreeBSD 9.2 2013-09-30 [FBD]
647 NetBSD 6.0.3 2013-09-30 [NBD]
648 NetBSD 6.1.2 2013-09-30 [NBD]
649 Mac OS X 10.9 2013-10-22 [APL]
650 OpenBSD 5.4 2013-11-01 [OBD]
651 DragonFly 3.6.0 2013-11-25 [DFB]
652 FreeBSD 10.0 2014-01-20 [FBD]
653 NetBSD 6.0.4 2014-01-27 [NBD]
654 NetBSD 6.1.3 2014-01-27 [NBD]
655 DragonFly 3.6.1 2014-02-22 [DFB]
656 DragonFly 3.6.2 2014-04-10 [DFB]
657 NetBSD 6.0.5 2014-04-19 [NDB]
658 NetBSD 6.1.4 2014-04-19 [NDB]
659 OpenBSD 5.5 2014-05-01 [OBD]
660 DragonFly 3.8.0 2014-06-04 [DFB]
661 DragonFly 3.8.1 2014-06-16 [DFB]
662 DragonFly 3.6.3 2014-06-17 [DFB]
663 FreeBSD 9.3 2014-07-05 [FBD]
664 DragonFly 3.8.2 2014-08-08 [DFB]
665 NetBSD 6.1.5 2014-09-22 [NBD]
666 Mac OS X 10.10 2014-10-16 [APL]
667 OpenBSD 5.6 2014-11-01 [OBD]
668 FreeBSD 10.1 2014-11-14 [FBD]
669 DragonFly 4.0.1 2014-11-25 [DFB]
670 DragonFly 4.0.2 2015-01-07 [DFB]
671 DragonFly 4.0.3 2015-01-21 [DFB]
672 DragonFly 4.0.4 2015-03-09 [DFB]
673 DragonFly 4.0.5 2015-03-23 [DFB]
674 OpenBSD 5.7 2015-05-01 [OBD]
675 DragonFly 4.2.0 2015-06-29 [DFB]
678 ------------------------
680 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
681 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
682 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
684 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
685 Company, Inc., 1994. ISBN 0-201-54777-5
687 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
688 Quarterman. The Design and Implementation of the 4.4BSD Operating
689 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
691 McKusick, Marshall Kirk, George Neville-Neil. The Design and
692 Implementation of the FreeBSD Operating System.
693 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
695 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
696 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
697 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
699 Doug McIlroy. Research Unix Reader.
701 Michael G. Brown. The Role of BSD in the Development of Unix.
702 Presented to the Tasmanian Unix Special Interest Group of the
703 Australian Computer Society, Hobart, August 1993.
705 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
706 URL: http://www.byte.com/art/9410/sec8/art3.htm
708 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
709 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
711 BSD Release Announcements collection.
712 URL: http://www.FreeBSD.org/releases/
714 BSD Hypertext Man Pages
715 URL: http://www.FreeBSD.org/cgi/man.cgi
717 UNIX history graphing project
718 URL: http://minnie.tuhs.org/Unix_History/index.html
721 URL: http://www.levenez.com/unix/
723 James Howard: The BSD Family Tree
724 URL: http://ezine.daemonnews.org/200104/bsd_family.html
725 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
731 Josh Gilliam for suggestions, bug fixes, and finding very old
732 original BSD announcements from Usenet or tapes.
734 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
737 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
738 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
740 $FreeBSD: head/share/misc/bsd-family-tree 284946 2015-06-30 07:46:06Z maxim $