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 |
338 | | | | DragonFly 4.4.1
340 FreeBSD 11 -current | NetBSD -current OpenBSD -current DragonFly -current
347 Time tolerance +/- 6 months, depending on which book/article you read; if it
348 was the announcement in Usenet or if it was available as tape.
350 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
351 and John Quarterman. The Design and Implementation of
352 the 4.4BSD Operating System.
353 [APL] Apple website [http://www.apple.com/macosx/]
354 [BSDI] Berkeley Software Design, Inc.
355 [DFB] DragonFlyBSD Project, The.
356 [DOC] README, COPYRIGHT on tape.
357 [FBD] FreeBSD Project, The.
358 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
359 Volume 11, Info 4, April, 1987.
360 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
361 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
362 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
363 Changes in the Kernel in 2.9BSD. Second Berkeley Software
364 Distribution UNIX Version 2.9, July, 1983.
365 [NBD] NetBSD Project, The.
366 [OBD] OpenBSD Project, The.
367 [QCU] Salus, Peter H. A quarter century of UNIX.
368 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
369 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
370 [USE] Usenet announcement.
371 [WRS] Wind River Systems, Inc.
372 [dmr] Dennis Ritchie, via E-Mail
377 First Edition 1971-11-03 [QCU]
378 DEC PDP-11/20, Assembler
379 Second Edition 1972-06-12 [QCU]
380 10 UNIX installations
381 Third Edition 1973-02-xx [QCU]
382 Pipes, 16 installations
383 Fourth Edition 1973-11-xx [QCU]
384 rewriting in C effected,
385 above 30 installations
386 Fifth Edition 1974-06-xx [QCU]
387 above 50 installations
388 Sixth Edition 1975-05-xx [QCU]
390 Seventh Edition 1979-01-xx [QCU]
392 Eighth Edition 1985-02-xx [QCU]
393 VAX 11/750, VAX 11/780 [dmr]
394 descended from 4.1c BSD [dmr]
395 descended from 4.1 BSD [44B]
396 scooping-out and replacement of the character-device
397 and networking part by the streams mechanism
399 Ninth Edition 1986-09-xx [QCU]
400 Tenth Edition 1989-10-xx [QCU]
404 PDP-11, Pascal, ex(1)
405 30 free copies of 1BSD sent out
406 35 tapes sold for 50 USD [QCU]
407 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
408 75 2BSD tapes shipped
409 2.79BSD 1980-04-xx [TUHS]
410 2.8BSD 1981-07-xx [KSJ]
412 2.8.1BSD 1982-01-xx [QCU]
413 set of performance improvements
414 2.9BSD 1983-07-xx [KSJ]
415 2.9.1BSD 1983-11-xx [TUHS]
416 2.9BSD-Seismo 1985-08-xx [SMS]
417 2.10BSD 1987-04-xx [KKK]
418 2.10.1BSD 1989-01-xx [SMS]
419 2.11BSD 1992-02-xx [SMS]
420 2.11BSD rev #430 1999-12-13 [SMS]
422 32V 1978-1[01]-xx [QCU]
423 3BSD late 1979 [QCU] March 1980 [TUHS]
424 virtual memory, page replacement,
427 4.1BSD 1981-07-08 [DOC]
429 alpha release, 100 sites, networking [44B]
430 4.1bBSD internal release, fast filesystem [44B]
432 beta release, IPC [44B]
433 4.2BSD 1983-09-xx [QCU]
435 4.3BSD 1986-06-xx [QCU]
436 1986-04-05 [KB], [DOC]
437 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
438 4.3BSD NET/1 1988-11-xx [QCU]
440 4.3BSD Reno 1990-06-29 [QCU], [DOC]
441 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
443 BSD/386 ALPHA 1991-12-xx [BSDI]
444 first code released to people outside BSDI
445 386BSD 0.0 1992-02-xx [DOC]
446 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
447 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
448 386BSD 0.1 1992-07-28 [DOC]
449 4.4BSD Alpha 1992-07-07
450 BSD/386 0.9.3 1992-10-xx [BSDI]
451 first external gamma; G customers
452 BSD/386 0.9.4 1992-12-xx [BSDI]
453 would have been 1.0 except for request
454 for preliminary injunction
455 BSD/386 1.0 1993-03-xx [BSDI]
456 injunction denied; first official release
457 NetBSD 0.8 1993-04-20 [NBD]
458 4.4BSD 1993-06-01 [USE]
459 NetBSD 0.9 1993-08-23 [NBD]
460 FreeBSD 1.0 1993-11-01 [FBD]
461 FreeBSD 1.0.2 1993-11-14 [FBD]
462 supersedes 1.0 13 days after release.
463 BSD/386 1.1 1994-02-xx [BSDI]
464 4.4BSD Lite 1994-03-01 [USE]
465 FreeBSD 1.1 1994-05-07 [FBD]
466 FreeBSD 1.1.5 1994-06-30 [FBD]
467 FreeBSD 1.1.5.1 1994-07-05 [FBD]
468 supersedes 1.1.5 5 days after release.
469 NetBSD 1.0 1994-10-26 [NBD]
470 386BSD 1.0 1994-11-12 [USE]
471 FreeBSD 2.0 1994-11-23 [FBD]
472 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
473 FreeBSD 2.0.5 1995-06-10 [FBD]
474 BSD/OS 2.0.1 1995-06-xx [BSDI]
475 4.4BSD Lite Release 2 1995-06-xx [44B]
476 the true final distribution from the CSRG
477 FreeBSD 2.1.0 1995-11-19 [FBD]
478 NetBSD 1.1 1995-11-26 [NBD]
479 BSD/OS 2.1 1996-01-xx [BSDI]
480 FreeBSD 2.1.5 1996-07-14 [FBD]
481 NetBSD 1.2 1996-10-04 [NBD]
482 OpenBSD 2.0 1996-10-18 [OBD]
483 FreeBSD 2.1.6 1996-11-16 [FBD]
484 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
486 FreeBSD 2.1.7 1997-02-20 [FBD]
487 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
488 FreeBSD 2.2.0 1997-03-16 [FBD]
489 FreeBSD 2.2.1 1997-03-25 [FBD]
490 FreeBSD 2.2.2 1997-05-16 [FBD]
491 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
492 OpenBSD 2.1 1997-06-01 [OBD]
493 FreeBSD 2.2.5 1997-10-22 [FBD]
494 OpenBSD 2.2 1997-12-01 [OBD]
495 NetBSD 1.3 1998-01-04 [NBD]
496 FreeBSD 2.2.6 1998-03-25 [FBD]
497 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
498 BSD/OS 3.1 1998-03-xx [BSDI]
499 OpenBSD 2.3 1998-05-19 [OBD]
500 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
501 FreeBSD 2.2.7 1998-07-22 [FBD]
502 BSD/OS 4.0 1998-08-xx [BSDI]
503 2-lock MP support, ELF executables
504 FreeBSD 3.0 1998-10-16 [FBD]
505 FreeBSD-3.0 is a snapshot from -current,
506 while 3.1 and 3.2 are from 3.x-stable which
507 was branched quite some time after 3.0-release
508 FreeBSD 2.2.8 1998-11-29 [FBD]
509 OpenBSD 2.4 1998-12-01 [OBD]
510 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
511 FreeBSD 3.1 1999-02-15 [FBD]
512 BSD/OS 4.0.1 1999-03-xx [BSDI]
513 NetBSD 1.4 1999-05-12 [NBD]
514 FreeBSD 3.2 1999-05-17 [FBD]
515 OpenBSD 2.5 1999-05-19 [OBD]
516 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
517 FreeBSD 3.3 1999-09-17 [FBD]
518 OpenBSD 2.6 1999-12-01 [OBD]
519 FreeBSD 3.4 1999-12-20 [FBD]
520 BSD/OS 4.1 1999-12-xx [BSDI]
521 FreeBSD 4.0 2000-03-13 [FBD]
522 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
523 OpenBSD 2.7 2000-06-15 [OBD]
524 FreeBSD 3.5 2000-06-24 [FBD]
525 FreeBSD 4.1 2000-07-27 [FBD]
526 FreeBSD 3.5.1 2000-07-28 [FBD]
527 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
528 FreeBSD 4.2 2000-11-21 [FBD]
529 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
530 BSD/OS 4.2 2000-11-29 [BSDI]
531 OpenBSD 2.8 2000-12-01 [OBD]
532 NetBSD 1.5 2000-12-06 [NBD]
533 Mac OS X 10.0 2001-03-24 [APL]
534 FreeBSD 4.3 2001-04-20 [FBD]
535 OpenBSD 2.9 2001-06-01 [OBD]
536 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
537 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
538 FreeBSD 4.4 2001-09-18 [FBD]
539 Mac OS X 10.1 2001-09-29 [APL]
540 OpenBSD 3.0 2001-12-01 [OBD]
541 FreeBSD 4.5 2002-01-29 [FBD]
542 BSD/OS 4.3 2002-03-14 [WRS]
543 OpenBSD 3.1 2002-05-19 [OBD]
544 FreeBSD 4.6 2002-06-15 [FBD]
545 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
546 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
547 Mac OS X 10.2 2002-08-23 [APL]
548 NetBSD 1.6 2002-09-14 [NBD]
549 FreeBSD 4.7 2002-10-08 [FBD]
550 OpenBSD 3.2 2002-11-01 [OBD]
551 FreeBSD 5.0 2003-01-17 [FBD]
552 FreeBSD 5.0 is a separate branch off of
553 -current, similar to 3.0.
554 FreeBSD 4.8 2003-04-03 [FBD]
555 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
556 OpenBSD 3.3 2003-05-01 [OBD]
557 BSD/OS 5.0 2003-05-?? [WRS]
558 FreeBSD 5.1 2003-06-09 [FBD]
559 Mac OS X 10.3 2003-10-24 [APL]
560 FreeBSD 4.9 2003-10-28 [FBD]
561 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
562 OpenBSD 3.4 2003-11-01 [OBD]
563 FreeBSD 5.2 2004-01-12 [FBD]
564 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
565 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
566 OpenBSD 3.5 2004-04-01 [OBD]
567 FreeBSD 4.10 2004-05-27 [FBD]
568 DragonFly 1.0 2004-07-12 [DFB]
569 OpenBSD 3.6 2004-10-29 [OBD]
570 FreeBSD 5.3 2004-11-06 [FBD]
571 NetBSD 2.0 2004-12-09 [NBD]
572 FreeBSD 4.11 2005-01-25 [FBD]
573 DragonFly 1.2.0 2005-04-08 [DFB]
574 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
575 Mac OS X 10.4 2005-04-29 [APL]
576 FreeBSD 5.4 2005-05-09 [FBD]
577 OpenBSD 3.7 2005-05-19 [OBD]
578 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
579 OpenBSD 3.8 2005-11-01 [OBD]
580 FreeBSD 6.0 2005-11-01 [FBD]
581 NetBSD 2.1 2005-11-02 [NBD]
582 NetBSD 3.0 2005-12-23 [NBD]
583 DragonFly 1.4.0 2006-01-08 [DFB]
584 FreeBSD 2.2.9 2006-04-01 [FBD]
585 OpenBSD 3.9 2006-05-01 [OBD]
586 FreeBSD 6.1 2006-05-08 [FBD]
587 FreeBSD 5.5 2006-05-25 [FBD]
588 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
589 DragonFly 1.6.0 2006-07-24 [DFB]
590 OpenBSD 4.0 2006-11-01 [OBD]
591 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
592 NetBSD 3.1 2006-11-04 [NBD]
593 FreeBSD 6.2 2007-01-15 [FBD]
594 DragonFly 1.8.0 2007-01-30 [DFB]
595 OpenBSD 4.1 2007-05-01 [OBD]
596 DragonFly 1.10.0 2007-08-06 [DFB]
597 Mac OS X 10.5 2007-10-26 [APL]
598 OpenBSD 4.2 2007-11-01 [OBD]
599 NetBSD 4.0 2007-12-19 [NBD]
600 FreeBSD 6.3 2008-01-18 [FBD]
601 DragonFly 1.12.0 2008-02-26 [DFB]
602 FreeBSD 7.0 2008-02-27 [FBD]
603 OpenBSD 4.3 2008-05-01 [OBD]
604 DragonFly 2.0.0 2008-07-21 [DFB]
605 OpenBSD 4.4 2008-11-01 [OBD]
606 FreeBSD 6.4 2008-11-28 [FBD]
607 FreeBSD 7.1 2009-01-04 [FBD]
608 DragonFly 2.2.0 2009-02-17 [DFB]
609 NetBSD 5.0 2009-04-29 [NBD]
610 OpenBSD 4.5 2009-05-01 [OBD]
611 FreeBSD 7.2 2009-05-04 [FBD]
612 Mac OS X 10.6 2009-06-08 [APL]
613 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
614 DragonFly 2.4.0 2009-09-16 [DFB]
615 OpenBSD 4.6 2009-10-18 [OBD]
616 FreeBSD 8.0 2009-11-26 [FBD]
617 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
618 FreeBSD 7.3 2010-03-23 [FBD]
619 DragonFly 2.6.0 2010-03-28 [DFB]
620 OpenBSD 4.7 2010-05-19 [OBD]
621 FreeBSD 8.1 2010-07-24 [FBD]
622 DragonFly 2.8.2 2010-10-30 [DFB]
623 OpenBSD 4.8 2010-11-01 [OBD]
624 NetBSD 5.1 2010-11-19 [NBD]
625 FreeBSD 7.4 2011-02-24 [FBD]
626 FreeBSD 8.2 2011-02-24 [FBD]
627 DragonFly 2.10.1 2011-04-26 [DFB]
628 OpenBSD 4.9 2011-05-01 [OBD]
629 Mac OS X 10.7 2011-07-20 [APL]
630 OpenBSD 5.0 2011-11-01 [OBD]
631 FreeBSD 9.0 2012-01-12 [FBD]
632 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
633 DragonFly 3.0.1 2012-02-21 [DFB]
634 FreeBSD 8.3 2012-04-18 [FBD]
635 OpenBSD 5.1 2012-05-01 [OBD]
636 Mac OS X 10.8 2012-07-25 [APL]
637 NetBSD 6.0 2012-10-17 [NBD]
638 OpenBSD 5.2 2012-11-01 [OBD]
639 DragonFly 3.2.1 2012-11-02 [DFB]
640 NetBSD 5.2 2012-12-03 [NBD]
641 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
642 FreeBSD 9.1 2012-12-30 [FBD]
643 DragonFly 3.4.1 2013-04-29 [DFB]
644 OpenBSD 5.3 2013-05-01 [OBD]
645 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
646 NetBSD 6.1 2013-05-18 [NBD]
647 FreeBSD 8.4 2013-06-07 [FBD]
648 NetBSD 6.1.1 2013-08-22 [NBD]
649 NetBSD 5.1.3 2013-09-29 [NBD]
650 NetBSD 5.2.1 2013-09-29 [NBD]
651 FreeBSD 9.2 2013-09-30 [FBD]
652 NetBSD 6.0.3 2013-09-30 [NBD]
653 NetBSD 6.1.2 2013-09-30 [NBD]
654 Mac OS X 10.9 2013-10-22 [APL]
655 OpenBSD 5.4 2013-11-01 [OBD]
656 DragonFly 3.6.0 2013-11-25 [DFB]
657 FreeBSD 10.0 2014-01-20 [FBD]
658 NetBSD 6.0.4 2014-01-27 [NBD]
659 NetBSD 6.1.3 2014-01-27 [NBD]
660 DragonFly 3.6.1 2014-02-22 [DFB]
661 DragonFly 3.6.2 2014-04-10 [DFB]
662 NetBSD 6.0.5 2014-04-19 [NDB]
663 NetBSD 6.1.4 2014-04-19 [NDB]
664 OpenBSD 5.5 2014-05-01 [OBD]
665 DragonFly 3.8.0 2014-06-04 [DFB]
666 DragonFly 3.8.1 2014-06-16 [DFB]
667 DragonFly 3.6.3 2014-06-17 [DFB]
668 FreeBSD 9.3 2014-07-05 [FBD]
669 DragonFly 3.8.2 2014-08-08 [DFB]
670 NetBSD 6.1.5 2014-09-22 [NBD]
671 Mac OS X 10.10 2014-10-16 [APL]
672 OpenBSD 5.6 2014-11-01 [OBD]
673 FreeBSD 10.1 2014-11-14 [FBD]
674 DragonFly 4.0.1 2014-11-25 [DFB]
675 DragonFly 4.0.2 2015-01-07 [DFB]
676 DragonFly 4.0.3 2015-01-21 [DFB]
677 DragonFly 4.0.4 2015-03-09 [DFB]
678 DragonFly 4.0.5 2015-03-23 [DFB]
679 OpenBSD 5.7 2015-05-01 [OBD]
680 DragonFly 4.2.0 2015-06-29 [DFB]
681 FreeBSD 10.2 2015-08-13 [FBD]
682 NetBSD 7.0 2015-09-25 [NBD]
683 OS X 10.11 2015-09-30 [APL]
684 OpenBSD 5.8 2015-10-18 [OBD]
685 DragonFly 4.4.1 2015-12-07 [DFB]
688 ------------------------
690 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
691 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
692 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
694 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
695 Company, Inc., 1994. ISBN 0-201-54777-5
697 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
698 Quarterman. The Design and Implementation of the 4.4BSD Operating
699 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
701 McKusick, Marshall Kirk, George Neville-Neil. The Design and
702 Implementation of the FreeBSD Operating System.
703 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
705 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
706 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
707 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
709 Doug McIlroy. Research Unix Reader.
711 Michael G. Brown. The Role of BSD in the Development of Unix.
712 Presented to the Tasmanian Unix Special Interest Group of the
713 Australian Computer Society, Hobart, August 1993.
715 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
716 URL: http://www.byte.com/art/9410/sec8/art3.htm
718 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
719 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
721 BSD Release Announcements collection.
722 URL: http://www.FreeBSD.org/releases/
724 BSD Hypertext Man Pages
725 URL: http://www.FreeBSD.org/cgi/man.cgi
727 UNIX history graphing project
728 URL: http://minnie.tuhs.org/Unix_History/index.html
731 URL: http://www.levenez.com/unix/
733 James Howard: The BSD Family Tree
734 URL: http://ezine.daemonnews.org/200104/bsd_family.html
735 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
741 Josh Gilliam for suggestions, bug fixes, and finding very old
742 original BSD announcements from Usenet or tapes.
744 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
747 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
748 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree