Merge from vendor branch TCPDUMP:
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1 The UNIX system family tree: Research and BSD
2 ---------------------------------------------
3
4 First Edition (V1)
5      |
6 Second Edition (V2)
7      |
8 Third Edition (V3)
9      |
10 Fourth Edition (V4)
11      |
12 Fifth Edition (V5)
13      |
14 Sixth Edition (V6) -----*
15        \                |
16         \               |
17          \              |
18 Seventh Edition (V7)    |
19             \           |
20              \        1BSD
21              32V        |
22                \      2BSD---------------*
23                 \    /                   |
24                  \  /                    |
25                   \/                     |
26                  3BSD                    |
27                   |                      |
28                4.0BSD               2.7.9BSD
29                   |                      |
30                4.1BSD --------------> 2.8BSD
31                   |                      |
32               4.1aBSD -----------\       |
33                   |                \     |
34               4.1bBSD                \   |
35                   |                    \ |
36       *------ 4.1cBSD --------------> 2.9BSD
37      /            |                      |
38 Eighth Edition    |                   2.9BSD-Seismo
39      |            |                      |
40      +----<--- 4.2BSD               2.9.1BSD
41      |            |                      |
42      +----<--- 4.3BSD -------------> 2.10BSD
43      |            |               /      |
44 Ninth Edition     |              / 2.10.1BSD
45      |         4.3BSD Tahoe-----+        |
46      |            |              \       |
47      |            |                \     |
48      v            |                  2.11BSD
49 Tenth Edition     |                      |
50                   |                  2.11BSD rev #430
51                4.3BSD NET/1              |
52                   |                      v
53                4.3BSD Reno
54                   |
55    *---------- 4.3BSD NET/2 -------------------+-------------*
56    |                    |                      |             |
57 386BSD 0.0              |                      |           BSD/386 ALPHA
58    |                    |                      |             |
59 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
60    |     \              |                  4.4BSD Alpha      |
61    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
62    |                    |                  4.4BSD            |
63    |                    |                    / |             |
64    |                    |   4.4BSD-Encumbered  |             |
65    |                 NetBSD 0.8                |           BSD/386 1.0
66    |                    |                      |             |
67 FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
68    |                    |           .----- 4.4BSD Lite       |
69 FreeBSD 1.1             |          /   /       |     \       |
70    |                    |         /   /        |      \      |
71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
72    |               /    |           /          |        \    |
73 FreeBSD 1.1.5.1   /     |          /           |         \   |
74    |             /   NetBSD 1.0 <-'            |          \  |
75    |            /       |                      |           \ |
76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
77    |                     \                     |             |
78 FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
79    |                 .-----\------------- 4.4BSD Lite2       |
80    |                 |      \             |  |   |   |       |
81    |                 | .-----|------Rhapsody |   |   |       |
82    |                 | |     |        NetBSD 1.3 |   |       |
83    |                 | |     |           OpenBSD 2.3 |       |
84    |                 | |     |                BSD/OS 3.0     |
85 FreeBSD 2.1          | |     |                               |
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       |
90  |     |             | |     |   \             |             |
91  | FreeBSD 2.1.6.1   | |     |    \            |             |
92  |     |             | |     |     \           |             |
93  | FreeBSD 2.1.7     | |     |      |          |             |
94  |     |             | |     |  NetBSD 1.2.1   |             |
95  | FreeBSD 2.1.7.1   | |     |                 |             |
96  |                   | |     |                 |             |
97  |                   | |     |                 |             |
98  *-FreeBSD 2.2       | |     |                 |             |
99  |        \          | |     |                 |             |
100  |     FreeBSD 2.2.1 | |     |                 |             |
101  |         |         | |     |                 |             |
102  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
103  |         |         | |     |                 |             |
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  |         v         | |     |    |            |             |
114  |     FreeBSD 2.2.8 | |     |    |            |             |
115  |                   | |     |    |        OpenBSD 2.4       |
116 FreeBSD 3.0 <--------* |     |    v            |             |
117  |                     |     | NetBSD 1.3.3    |             |
118  *---FreeBSD 3.1       |     |                 |             |
119  |       |             |     |                 |           BSD/OS 4.0.1
120  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
121  |       |          |  |  |  |    |            |             |
122  |       |          |  |  |  |    |            |             |
123  |       |          |  |  |  |    |            |             |
124  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
125  |       |          |  |  |  |    |        OpenBSD 2.6       |
126  |   FreeBSD 3.4    |  |  |  |    |            |             |
127  |           |      |  |  |  |    |            |           BSD/OS 4.1
128 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
129  |           |      |  |  |  |    |            |             |
130  |           |      |  |  |  |    |            |             |
131  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
132  |           |      |  |  |  |    |            |             |
133  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
134  |                  |  |  |  |    |            |             |
135  *---FreeBSD 4.1    |  |  |  |    |            |             |
136  |      |           |  | (?) |    |            |             |
137  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
138  |      |           |  | /   |    |            |             |
139  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
140  |      |         Mac OS X   |    |        OpenBSD 2.8     BSD/OS 4.2
141  |      |             |      |    v            |             |
142  |      |             |      |                 |             |
143  |      |           10.0  NetBSD 1.5           |             |
144  |   FreeBSD 4.3      |      |    |            |             |
145  |      |             |      |    |        OpenBSD 2.9       |
146  |      |             |      | NetBSD 1.5.1    |             |
147  |      |             |      |    |            |             |
148  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
149  |      |        | Mac OS X  |    |            |             |
150  |      |        |   10.1    |    |        OpenBSD 3.0       |
151  |   FreeBSD 4.5 |    |      |    |            |             |
152  |      |         \   |      |    |            |           BSD/OS 4.3
153  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
154  |      |           \ |      | NetBSD 1.5.3    |             v
155  |   FreeBSD 4.6.2 Mac OS X  |    |            |
156  |      |            10.2    |    v            |
157  |   FreeBSD 4.7      |      |                 |
158  |      |             |   NetBSD 1.6           |
159  |   FreeBSD 4.8      |      |                 |
160  |      |             |      |             OpenBSD 3.2
161  |      v             |      |                 |
162  |                    |      |                 |
163 FreeBSD 5.0           |      |                 |
164  |                    |      |                 |
165 FreeBSD 5.0-current   |   NetBSD -current  OpenBSD -current
166  |                    |      |                 |
167  v                    v      v                 v
168
169 Time
170 ----------------
171
172 Time tolerance +/- 6 months, depending on which book/article you read; if it
173 was the announcement in Usenet or if it was available as tape.
174
175 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
176         and John Quarterman. The Design and Implementation of
177         the 4.4BSD Operating System.
178 [APL] Apple website [http://www.apple.com/macosx/]
179 [BSDI] Berkeley Software Design, Inc.
180 [DOC] README, COPYRIGHT on tape.
181 [FBD] FreeBSD Project, The.
182 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
183         Volume 11, Info 4, April, 1987.
184 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
185         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
186 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
187         Changes in the Kernel in 2.9BSD. Second Berkeley Software
188         Distribution UNIX Version 2.9, July, 1983.
189 [NBD] NetBSD Project, The.
190 [OBD] OpenBSD Project, The.
191 [QCU] Salus, Peter H. A quarter century of UNIX.
192 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
193 [USE] Usenet announcement.
194 [WRS] Wind River Systems, Inc.
195 [dmr] Dennis Ritchie, via E-Mail
196
197 Multics                 1965
198 UNIX                    Summer 1969
199                                 DEC PDP-7
200 First   Edition         1971-11-03 [QCU]
201                                 DEC PDP-11/20, Assembler
202 Second  Edition         1972-06-12 [QCU]
203                                 10 UNIX installations
204 Third   Edition         1973-02-xx [QCU]
205                                 Pipes, 16 installations
206 Fourth  Edition         1973-11-xx [QCU]
207                                 rewriting in C effected,
208                                 above 30 installations
209 Fifth   Edition         1974-06-xx [QCU]
210                                 above 50 installations
211 Sixth   Edition         1975-05-xx [QCU]
212                                 port to DEC Vax
213 Seventh Edition         1979-01-xx [QCU]
214                                 first portable UNIX
215 Eighth  Edition         1985-02-xx [QCU]
216                                 VAX 11/750, VAX 11/780 [dmr]
217                                 descended from 4.1c BSD [dmr]
218                                 descended from 4.1 BSD [44B]
219                         scooping-out and replacement of the character-device
220                         and networking part by the streams mechanism
221
222 Ninth   Edition         1986-09-xx [QCU]
223 Tenth   Edition         1989-10-xx [QCU]
224
225 1BSD                    late 1977
226                         1978-03-09 [QCU]
227                                 PDP-11, Pascal, ex(1)
228                                 30 free copies of 1BSD sent out
229                                 35 tapes sold for 50 USD [QCU]
230 2BSD                    mid 1978 [QCU]
231                                 75 2BSD tapes shipped
232 2.7.9BSD                ?? [SMS]
233 2.8BSD                  1981-07-xx [KSJ]
234
235 2.8.1BSD                1982-01-xx [QCU]
236                                 set of performance improvements
237 2.9BSD                  1983-07-xx [KSJ]
238 2.9.1BSD                1983-11-xx
239 2.9BSD-Seismo           1985-08-xx [SMS]
240 2.10BSD                 1987-04-xx [KKK]
241 2.10.1BSD               1989-01-xx [SMS]
242 2.11BSD                 1992-02-xx [SMS]
243 2.11BSD rev #430        1999-12-13 [SMS]
244
245 32V                     1978-1[01]-xx [QCU]
246 3BSD                    late 1979 [QCU]
247                                 virtual memory, page replacement,
248                                 demand paging
249 4.0BSD                  1980-10-xx
250 4.1BSD                  1981-07-08 [DOC]
251 4.1aBSD                 1982-04-xx
252                                 alpha release, 100 sites, networking [44B]
253 4.1bBSD                         internal release, fast filesystem [44B]
254 4.1cBSD                 late 1982
255                                 beta release, IPC [44B]
256 4.2BSD                  1983-09-xx [QCU]
257                         1983-08-03 [DOC]
258 4.3BSD                  1986-06-xx [QCU]
259                         1986-04-05 [KB], [DOC]
260 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
261 4.3BSD NET/1            1988-11-xx [QCU]
262                         1989-01-01 [DOC]
263 4.3BSD Reno             1990-06-29 [QCU], [DOC]
264 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
265
266 BSD/386 ALPHA           1991-12-xx [BSDI]
267                                 first code released to people outside BSDI
268 386BSD 0.0              1992-02-xx [DOC]
269 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
270 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
271 386BSD 0.1              1992-07-28 [DOC]
272 4.4BSD Alpha            1992-07-07
273 BSD/386 0.9.3           1992-10-xx [BSDI]
274                                 first external gamma; G customers
275 BSD/386 0.9.4           1992-12-xx [BSDI]
276                                 would have been 1.0 except for request
277                                 for preliminary injunction
278 BSD/386 1.0             1993-03-xx [BSDI]
279                                 injunction denied; first official release
280 NetBSD 0.8              1993-04-20 [NBD]
281 4.4BSD                  1993-06-01 [USE]
282 NetBSD 0.9              1993-08-23 [NBD]
283 FreeBSD 1.0             1993-11-01 [FBD]
284 BSD/386 1.1             1994-02-xx [BSDI]
285 4.4BSD Lite             1994-03-01 [USE]
286 FreeBSD 1.1             1994-04-xx [FBD]
287 FreeBSD 1.1.5.1         1994-07-xx [FBD]
288                                 supersedes 1.1.5 3 days after release.
289 NetBSD 1.0              1994-10-26 [NBD]
290 386BSD 1.0              1994-11-12 [USE]
291 FreeBSD 2.0             1995-01-xx [FBD]
292 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
293 FreeBSD 2.0.5           1995-06-10 [FBD]
294 BSD/OS 2.0.1            1995-06-xx [BSDI]
295 4.4BSD Lite Release 2   1995-06-xx [44B]
296                                 the true final distribution from the CSRG
297 FreeBSD 2.1.0           1995-11-19 [FBD]
298 NetBSD 1.1              1995-11-26 [NBD]
299 BSD/OS 2.1              1996-01-xx [BSDI]
300 FreeBSD 2.1.5           1996-07-14 [FBD]
301 NetBSD 1.2              1996-10-04 [NBD]
302 OpenBSD 2.0             1996-10-18 [OBD]
303 FreeBSD 2.1.6           1996-11-16 [FBD]
304 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
305 Rhapsody                1997-xx-xx
306 FreeBSD 2.1.7           1997-02-20 [FBD]
307 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
308 FreeBSD 2.2.0           1997-03-16 [FBD]
309 FreeBSD 2.2.1           1997-03-25 [FBD]
310 FreeBSD 2.2.2           1997-05-16 [FBD]
311 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
312 OpenBSD 2.1             1997-06-01 [OBD]
313 FreeBSD 2.2.5           1997-10-22 [FBD]
314 OpenBSD 2.2             1997-12-01 [OBD]
315 NetBSD 1.3              1998-01-04 [NBD]
316 FreeBSD 2.2.6           1998-03-25 [FBD]
317 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
318 BSD/OS 3.1              1998-03-xx [BSDI]
319 OpenBSD 2.3             1998-05-19 [OBD]
320 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
321 FreeBSD 2.2.7           1998-07-22 [FBD]
322 BSD/OS 4.0              1998-08-xx [BSDI]
323                                 2-lock MP support, ELF executables
324 FreeBSD 3.0             1998-10-16 [FBD]
325                                 FreeBSD-3.0 is a snapshot from -current,
326                                 while 3.1 and 3.2 are from 3.x-stable which
327                                 was branched quite some time after 3.0-release
328 FreeBSD 2.2.8           1998-11-29 [FBD]
329 OpenBSD 2.4             1998-12-01 [OBD]
330 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
331 FreeBSD 3.1             1999-02-15 [FBD]
332 BSD/OS 4.0.1            1999-03-xx [BSDI]
333 NetBSD 1.4              1999-05-12 [NBD]
334 FreeBSD 3.2             1999-05-17 [FBD]
335 OpenBSD 2.5             1999-05-19 [OBD]
336 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
337 FreeBSD 3.3             1999-09-17 [FBD]
338 OpenBSD 2.6             1999-12-01 [OBD]
339 FreeBSD 3.4             1999-12-20 [FBD]
340 BSD/OS 4.1              1999-12-xx [BSDI]
341 FreeBSD 4.0             2000-03-13 [FBD]
342 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
343 OpenBSD 2.7             2000-06-15 [OBD]
344 FreeBSD 3.5             2000-06-24 [FBD]
345 FreeBSD 4.1             2000-07-27 [FBD]
346 FreeBSD 3.5.1           2000-07-28 [FBD]
347 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
348 FreeBSD 4.2             2000-11-21 [FBD]
349 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
350 BSD/OS 4.2              2000-11-29 [BSDI]
351 OpenBSD 2.8             2000-12-01 [OBD]
352 NetBSD 1.5              2000-12-06 [NBD]
353 Mac OS X 10.0           2001-03-24 [APL]
354 FreeBSD 4.3             2001-04-20 [FBD]
355 OpenBSD 2.9             2001-06-01 [OBD]
356 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
357 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
358 FreeBSD 4.4             2001-09-18 [FBD]
359 Mac OS X 10.1           2001-09-29 [APL]
360 OpenBSD 3.0             2001-12-01 [OBD]
361 FreeBSD 4.5             2002-01-29 [FBD]
362 BSD/OS 4.3              2002-03-14 [WRS]
363 OpenBSD 3.1             2002-05-19 [OBD]
364 FreeBSD 4.6             2002-06-15 [FBD]
365 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
366 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
367 Mac OS X 10.2           2002-08-23 [APL]
368 NetBSD 1.6              2002-09-14 [NBD]
369 FreeBSD 4.7             2002-10-08 [FBD]
370 OpenBSD 3.2             2002-11-01 [OBD]
371 FreeBSD 5.0             2003-01-17 [FBD]
372                                 FreeBSD 5.0 is a separate branch off of
373                                 -current, similar to 3.0.
374 FreeBSD 4.8             2003-04-03 [FBD]
375
376
377 Bibliography
378 ------------------------
379
380 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
381 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
382 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
383
384 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
385 Company, Inc., 1994. ISBN 0-201-54777-5
386
387 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
388 Quarterman. The Design and Implementation of the 4.4BSD Operating
389 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
390
391 Doug McIlroy. Research Unix Reader.
392
393 Michael G. Brown. The Role of BSD in the Development of Unix.
394 Presented to the Tasmanian Unix Special Interest Group of the
395 Australian Computer Society, Hobart, August 1993.
396
397 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
398 URL: http://www.byte.com/art/9410/sec8/art3.htm (unreachable)
399
400 Andreas Klemm, Lars K├Âller. If you're going to San Francisco ...
401 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
402
403 BSD Release Announcements collection.
404 URL: http://www.de.FreeBSD.org/de/ftp/releases/
405
406 BSD Hypertext Man Pages
407 URL: http://www.FreeBSD.org/cgi/man.cgi
408
409 UNIX history graphing project
410 URL: http://minnie.tuhs.org/Unix_History/index.html
411
412 UNIX history
413 URL: http://www.levenez.com/unix/
414
415 James Howard: The BSD Family Tree
416 URL: http://www.daemonnews.org/200104/bsd_family.html
417 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
418
419
420 Acknowledgments
421 ---------------
422
423 Josh Gilliam for suggestions, bug fixes, and finding very old
424 original BSD announcements from Usenet or tapes.
425
426 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
427
428 --
429 Copyright (c) 1997-2001 Wolfram Schneider <wosch@FreeBSD.ORG>
430 URL: ftp://ftp.freebsd.org/pub/FreeBSD/branches/-current/src/share/misc/bsd-family-tree
431
432 $FreeBSD: src/share/misc/bsd-family-tree,v 1.21.2.14 2003/04/07 05:22:13 murray Exp $
433 $DragonFly: src/share/misc/bsd-family-tree,v 1.2 2003/06/17 04:37:01 dillon Exp $