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
332 | | | | OpenBSD 5.7 |
333 | | | | | DragonFly 4.2.0
336 | OS X NetBSD 7.0 | |
337 | 10.11 | OpenBSD 5.8 |
339 FreeBSD 11 -current | NetBSD -current OpenBSD -current DragonFly -current
346 Time tolerance +/- 6 months, depending on which book/article you read; if it
347 was the announcement in Usenet or if it was available as tape.
349 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
350 and John Quarterman. The Design and Implementation of
351 the 4.4BSD Operating System.
352 [APL] Apple website [http://www.apple.com/macosx/]
353 [BSDI] Berkeley Software Design, Inc.
354 [DFB] DragonFlyBSD Project, The.
355 [DOC] README, COPYRIGHT on tape.
356 [FBD] FreeBSD Project, The.
357 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
358 Volume 11, Info 4, April, 1987.
359 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
360 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
361 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
362 Changes in the Kernel in 2.9BSD. Second Berkeley Software
363 Distribution UNIX Version 2.9, July, 1983.
364 [NBD] NetBSD Project, The.
365 [OBD] OpenBSD Project, The.
366 [QCU] Salus, Peter H. A quarter century of UNIX.
367 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
368 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
369 [USE] Usenet announcement.
370 [WRS] Wind River Systems, Inc.
371 [dmr] Dennis Ritchie, via E-Mail
376 First Edition 1971-11-03 [QCU]
377 DEC PDP-11/20, Assembler
378 Second Edition 1972-06-12 [QCU]
379 10 UNIX installations
380 Third Edition 1973-02-xx [QCU]
381 Pipes, 16 installations
382 Fourth Edition 1973-11-xx [QCU]
383 rewriting in C effected,
384 above 30 installations
385 Fifth Edition 1974-06-xx [QCU]
386 above 50 installations
387 Sixth Edition 1975-05-xx [QCU]
389 Seventh Edition 1979-01-xx [QCU]
391 Eighth Edition 1985-02-xx [QCU]
392 VAX 11/750, VAX 11/780 [dmr]
393 descended from 4.1c BSD [dmr]
394 descended from 4.1 BSD [44B]
395 scooping-out and replacement of the character-device
396 and networking part by the streams mechanism
398 Ninth Edition 1986-09-xx [QCU]
399 Tenth Edition 1989-10-xx [QCU]
403 PDP-11, Pascal, ex(1)
404 30 free copies of 1BSD sent out
405 35 tapes sold for 50 USD [QCU]
406 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
407 75 2BSD tapes shipped
408 2.79BSD 1980-04-xx [TUHS]
409 2.8BSD 1981-07-xx [KSJ]
411 2.8.1BSD 1982-01-xx [QCU]
412 set of performance improvements
413 2.9BSD 1983-07-xx [KSJ]
414 2.9.1BSD 1983-11-xx [TUHS]
415 2.9BSD-Seismo 1985-08-xx [SMS]
416 2.10BSD 1987-04-xx [KKK]
417 2.10.1BSD 1989-01-xx [SMS]
418 2.11BSD 1992-02-xx [SMS]
419 2.11BSD rev #430 1999-12-13 [SMS]
421 32V 1978-1[01]-xx [QCU]
422 3BSD late 1979 [QCU] March 1980 [TUHS]
423 virtual memory, page replacement,
426 4.1BSD 1981-07-08 [DOC]
428 alpha release, 100 sites, networking [44B]
429 4.1bBSD internal release, fast filesystem [44B]
431 beta release, IPC [44B]
432 4.2BSD 1983-09-xx [QCU]
434 4.3BSD 1986-06-xx [QCU]
435 1986-04-05 [KB], [DOC]
436 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
437 4.3BSD NET/1 1988-11-xx [QCU]
439 4.3BSD Reno 1990-06-29 [QCU], [DOC]
440 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
442 BSD/386 ALPHA 1991-12-xx [BSDI]
443 first code released to people outside BSDI
444 386BSD 0.0 1992-02-xx [DOC]
445 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
446 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
447 386BSD 0.1 1992-07-28 [DOC]
448 4.4BSD Alpha 1992-07-07
449 BSD/386 0.9.3 1992-10-xx [BSDI]
450 first external gamma; G customers
451 BSD/386 0.9.4 1992-12-xx [BSDI]
452 would have been 1.0 except for request
453 for preliminary injunction
454 BSD/386 1.0 1993-03-xx [BSDI]
455 injunction denied; first official release
456 NetBSD 0.8 1993-04-20 [NBD]
457 4.4BSD 1993-06-01 [USE]
458 NetBSD 0.9 1993-08-23 [NBD]
459 FreeBSD 1.0 1993-11-01 [FBD]
460 FreeBSD 1.0.2 1993-11-14 [FBD]
461 supersedes 1.0 13 days after release.
462 BSD/386 1.1 1994-02-xx [BSDI]
463 4.4BSD Lite 1994-03-01 [USE]
464 FreeBSD 1.1 1994-05-07 [FBD]
465 FreeBSD 1.1.5 1994-06-30 [FBD]
466 FreeBSD 1.1.5.1 1994-07-05 [FBD]
467 supersedes 1.1.5 5 days after release.
468 NetBSD 1.0 1994-10-26 [NBD]
469 386BSD 1.0 1994-11-12 [USE]
470 FreeBSD 2.0 1994-11-23 [FBD]
471 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
472 FreeBSD 2.0.5 1995-06-10 [FBD]
473 BSD/OS 2.0.1 1995-06-xx [BSDI]
474 4.4BSD Lite Release 2 1995-06-xx [44B]
475 the true final distribution from the CSRG
476 FreeBSD 2.1.0 1995-11-19 [FBD]
477 NetBSD 1.1 1995-11-26 [NBD]
478 BSD/OS 2.1 1996-01-xx [BSDI]
479 FreeBSD 2.1.5 1996-07-14 [FBD]
480 NetBSD 1.2 1996-10-04 [NBD]
481 OpenBSD 2.0 1996-10-18 [OBD]
482 FreeBSD 2.1.6 1996-11-16 [FBD]
483 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
485 FreeBSD 2.1.7 1997-02-20 [FBD]
486 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
487 FreeBSD 2.2.0 1997-03-16 [FBD]
488 FreeBSD 2.2.1 1997-03-25 [FBD]
489 FreeBSD 2.2.2 1997-05-16 [FBD]
490 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
491 OpenBSD 2.1 1997-06-01 [OBD]
492 FreeBSD 2.2.5 1997-10-22 [FBD]
493 OpenBSD 2.2 1997-12-01 [OBD]
494 NetBSD 1.3 1998-01-04 [NBD]
495 FreeBSD 2.2.6 1998-03-25 [FBD]
496 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
497 BSD/OS 3.1 1998-03-xx [BSDI]
498 OpenBSD 2.3 1998-05-19 [OBD]
499 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
500 FreeBSD 2.2.7 1998-07-22 [FBD]
501 BSD/OS 4.0 1998-08-xx [BSDI]
502 2-lock MP support, ELF executables
503 FreeBSD 3.0 1998-10-16 [FBD]
504 FreeBSD-3.0 is a snapshot from -current,
505 while 3.1 and 3.2 are from 3.x-stable which
506 was branched quite some time after 3.0-release
507 FreeBSD 2.2.8 1998-11-29 [FBD]
508 OpenBSD 2.4 1998-12-01 [OBD]
509 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
510 FreeBSD 3.1 1999-02-15 [FBD]
511 BSD/OS 4.0.1 1999-03-xx [BSDI]
512 NetBSD 1.4 1999-05-12 [NBD]
513 FreeBSD 3.2 1999-05-17 [FBD]
514 OpenBSD 2.5 1999-05-19 [OBD]
515 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
516 FreeBSD 3.3 1999-09-17 [FBD]
517 OpenBSD 2.6 1999-12-01 [OBD]
518 FreeBSD 3.4 1999-12-20 [FBD]
519 BSD/OS 4.1 1999-12-xx [BSDI]
520 FreeBSD 4.0 2000-03-13 [FBD]
521 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
522 OpenBSD 2.7 2000-06-15 [OBD]
523 FreeBSD 3.5 2000-06-24 [FBD]
524 FreeBSD 4.1 2000-07-27 [FBD]
525 FreeBSD 3.5.1 2000-07-28 [FBD]
526 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
527 FreeBSD 4.2 2000-11-21 [FBD]
528 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
529 BSD/OS 4.2 2000-11-29 [BSDI]
530 OpenBSD 2.8 2000-12-01 [OBD]
531 NetBSD 1.5 2000-12-06 [NBD]
532 Mac OS X 10.0 2001-03-24 [APL]
533 FreeBSD 4.3 2001-04-20 [FBD]
534 OpenBSD 2.9 2001-06-01 [OBD]
535 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
536 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
537 FreeBSD 4.4 2001-09-18 [FBD]
538 Mac OS X 10.1 2001-09-29 [APL]
539 OpenBSD 3.0 2001-12-01 [OBD]
540 FreeBSD 4.5 2002-01-29 [FBD]
541 BSD/OS 4.3 2002-03-14 [WRS]
542 OpenBSD 3.1 2002-05-19 [OBD]
543 FreeBSD 4.6 2002-06-15 [FBD]
544 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
545 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
546 Mac OS X 10.2 2002-08-23 [APL]
547 NetBSD 1.6 2002-09-14 [NBD]
548 FreeBSD 4.7 2002-10-08 [FBD]
549 OpenBSD 3.2 2002-11-01 [OBD]
550 FreeBSD 5.0 2003-01-17 [FBD]
551 FreeBSD 5.0 is a separate branch off of
552 -current, similar to 3.0.
553 FreeBSD 4.8 2003-04-03 [FBD]
554 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
555 OpenBSD 3.3 2003-05-01 [OBD]
556 BSD/OS 5.0 2003-05-?? [WRS]
557 FreeBSD 5.1 2003-06-09 [FBD]
558 Mac OS X 10.3 2003-10-24 [APL]
559 FreeBSD 4.9 2003-10-28 [FBD]
560 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
561 OpenBSD 3.4 2003-11-01 [OBD]
562 FreeBSD 5.2 2004-01-12 [FBD]
563 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
564 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
565 OpenBSD 3.5 2004-04-01 [OBD]
566 FreeBSD 4.10 2004-05-27 [FBD]
567 DragonFly 1.0 2004-07-12 [DFB]
568 OpenBSD 3.6 2004-10-29 [OBD]
569 FreeBSD 5.3 2004-11-06 [FBD]
570 NetBSD 2.0 2004-12-09 [NBD]
571 FreeBSD 4.11 2005-01-25 [FBD]
572 DragonFly 1.2.0 2005-04-08 [DFB]
573 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
574 Mac OS X 10.4 2005-04-29 [APL]
575 FreeBSD 5.4 2005-05-09 [FBD]
576 OpenBSD 3.7 2005-05-19 [OBD]
577 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
578 OpenBSD 3.8 2005-11-01 [OBD]
579 FreeBSD 6.0 2005-11-01 [FBD]
580 NetBSD 2.1 2005-11-02 [NBD]
581 NetBSD 3.0 2005-12-23 [NBD]
582 DragonFly 1.4.0 2006-01-08 [DFB]
583 FreeBSD 2.2.9 2006-04-01 [FBD]
584 OpenBSD 3.9 2006-05-01 [OBD]
585 FreeBSD 6.1 2006-05-08 [FBD]
586 FreeBSD 5.5 2006-05-25 [FBD]
587 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
588 DragonFly 1.6.0 2006-07-24 [DFB]
589 OpenBSD 4.0 2006-11-01 [OBD]
590 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
591 NetBSD 3.1 2006-11-04 [NBD]
592 FreeBSD 6.2 2007-01-15 [FBD]
593 DragonFly 1.8.0 2007-01-30 [DFB]
594 OpenBSD 4.1 2007-05-01 [OBD]
595 DragonFly 1.10.0 2007-08-06 [DFB]
596 Mac OS X 10.5 2007-10-26 [APL]
597 OpenBSD 4.2 2007-11-01 [OBD]
598 NetBSD 4.0 2007-12-19 [NBD]
599 FreeBSD 6.3 2008-01-18 [FBD]
600 DragonFly 1.12.0 2008-02-26 [DFB]
601 FreeBSD 7.0 2008-02-27 [FBD]
602 OpenBSD 4.3 2008-05-01 [OBD]
603 DragonFly 2.0.0 2008-07-21 [DFB]
604 OpenBSD 4.4 2008-11-01 [OBD]
605 FreeBSD 6.4 2008-11-28 [FBD]
606 FreeBSD 7.1 2009-01-04 [FBD]
607 DragonFly 2.2.0 2009-02-17 [DFB]
608 NetBSD 5.0 2009-04-29 [NBD]
609 OpenBSD 4.5 2009-05-01 [OBD]
610 FreeBSD 7.2 2009-05-04 [FBD]
611 Mac OS X 10.6 2009-06-08 [APL]
612 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
613 DragonFly 2.4.0 2009-09-16 [DFB]
614 OpenBSD 4.6 2009-10-18 [OBD]
615 FreeBSD 8.0 2009-11-26 [FBD]
616 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
617 FreeBSD 7.3 2010-03-23 [FBD]
618 DragonFly 2.6.0 2010-03-28 [DFB]
619 OpenBSD 4.7 2010-05-19 [OBD]
620 FreeBSD 8.1 2010-07-24 [FBD]
621 DragonFly 2.8.2 2010-10-30 [DFB]
622 OpenBSD 4.8 2010-11-01 [OBD]
623 NetBSD 5.1 2010-11-19 [NBD]
624 FreeBSD 7.4 2011-02-24 [FBD]
625 FreeBSD 8.2 2011-02-24 [FBD]
626 DragonFly 2.10.1 2011-04-26 [DFB]
627 OpenBSD 4.9 2011-05-01 [OBD]
628 Mac OS X 10.7 2011-07-20 [APL]
629 OpenBSD 5.0 2011-11-01 [OBD]
630 FreeBSD 9.0 2012-01-12 [FBD]
631 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
632 DragonFly 3.0.1 2012-02-21 [DFB]
633 FreeBSD 8.3 2012-04-18 [FBD]
634 OpenBSD 5.1 2012-05-01 [OBD]
635 Mac OS X 10.8 2012-07-25 [APL]
636 NetBSD 6.0 2012-10-17 [NBD]
637 OpenBSD 5.2 2012-11-01 [OBD]
638 DragonFly 3.2.1 2012-11-02 [DFB]
639 NetBSD 5.2 2012-12-03 [NBD]
640 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
641 FreeBSD 9.1 2012-12-30 [FBD]
642 DragonFly 3.4.1 2013-04-29 [DFB]
643 OpenBSD 5.3 2013-05-01 [OBD]
644 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
645 NetBSD 6.1 2013-05-18 [NBD]
646 FreeBSD 8.4 2013-06-07 [FBD]
647 NetBSD 6.1.1 2013-08-22 [NBD]
648 NetBSD 5.1.3 2013-09-29 [NBD]
649 NetBSD 5.2.1 2013-09-29 [NBD]
650 FreeBSD 9.2 2013-09-30 [FBD]
651 NetBSD 6.0.3 2013-09-30 [NBD]
652 NetBSD 6.1.2 2013-09-30 [NBD]
653 Mac OS X 10.9 2013-10-22 [APL]
654 OpenBSD 5.4 2013-11-01 [OBD]
655 DragonFly 3.6.0 2013-11-25 [DFB]
656 FreeBSD 10.0 2014-01-20 [FBD]
657 NetBSD 6.0.4 2014-01-27 [NBD]
658 NetBSD 6.1.3 2014-01-27 [NBD]
659 DragonFly 3.6.1 2014-02-22 [DFB]
660 DragonFly 3.6.2 2014-04-10 [DFB]
661 NetBSD 6.0.5 2014-04-19 [NDB]
662 NetBSD 6.1.4 2014-04-19 [NDB]
663 OpenBSD 5.5 2014-05-01 [OBD]
664 DragonFly 3.8.0 2014-06-04 [DFB]
665 DragonFly 3.8.1 2014-06-16 [DFB]
666 DragonFly 3.6.3 2014-06-17 [DFB]
667 FreeBSD 9.3 2014-07-05 [FBD]
668 DragonFly 3.8.2 2014-08-08 [DFB]
669 NetBSD 6.1.5 2014-09-22 [NBD]
670 Mac OS X 10.10 2014-10-16 [APL]
671 OpenBSD 5.6 2014-11-01 [OBD]
672 FreeBSD 10.1 2014-11-14 [FBD]
673 DragonFly 4.0.1 2014-11-25 [DFB]
674 DragonFly 4.0.2 2015-01-07 [DFB]
675 DragonFly 4.0.3 2015-01-21 [DFB]
676 DragonFly 4.0.4 2015-03-09 [DFB]
677 DragonFly 4.0.5 2015-03-23 [DFB]
678 OpenBSD 5.7 2015-05-01 [OBD]
679 DragonFly 4.2.0 2015-06-29 [DFB]
680 FreeBSD 10.2 2015-08-13 [FBD]
681 NetBSD 7.0 2015-09-25 [NBD]
682 OS X 10.11 2015-09-30 [APL]
683 OpenBSD 5.8 2015-10-18 [OBD]
686 ------------------------
688 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
689 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
690 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
692 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
693 Company, Inc., 1994. ISBN 0-201-54777-5
695 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
696 Quarterman. The Design and Implementation of the 4.4BSD Operating
697 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
699 McKusick, Marshall Kirk, George Neville-Neil. The Design and
700 Implementation of the FreeBSD Operating System.
701 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
703 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
704 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
705 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
707 Doug McIlroy. Research Unix Reader.
709 Michael G. Brown. The Role of BSD in the Development of Unix.
710 Presented to the Tasmanian Unix Special Interest Group of the
711 Australian Computer Society, Hobart, August 1993.
713 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
714 URL: http://www.byte.com/art/9410/sec8/art3.htm
716 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
717 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
719 BSD Release Announcements collection.
720 URL: http://www.FreeBSD.org/releases/
722 BSD Hypertext Man Pages
723 URL: http://www.FreeBSD.org/cgi/man.cgi
725 UNIX history graphing project
726 URL: http://minnie.tuhs.org/Unix_History/index.html
729 URL: http://www.levenez.com/unix/
731 James Howard: The BSD Family Tree
732 URL: http://ezine.daemonnews.org/200104/bsd_family.html
733 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
739 Josh Gilliam for suggestions, bug fixes, and finding very old
740 original BSD announcements from Usenet or tapes.
742 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
745 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
746 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
748 $FreeBSD: head/share/misc/bsd-family-tree 289623 2015-10-20 11:37:16Z pluknet $