1The UNIX system family tree: Research and BSD
2---------------------------------------------
3
4First Edition (V1)
5 |
6Second Edition (V2)
7 |
8Third Edition (V3)
9 |
10Fourth Edition (V4)
11 |
12Fifth Edition (V5)
13 |
14Sixth Edition (V6) -----*
15 \ |
16 \ |
17 \ |
18Seventh 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 / | |
38Eighth Edition | 2.9BSD-Seismo
39 | | |
40 +----<--- 4.2BSD 2.9.1BSD
41 | | |
42 +----<--- 4.3BSD -------------> 2.10BSD
43 | | / |
44Ninth Edition | / 2.10.1BSD
45 | 4.3BSD Tahoe-----+ |
46 | | \ |
47 | | \ |
48 v | 2.11BSD
49Tenth Edition | |
50 | 2.11BSD rev #430
51 4.3BSD NET/1 |
52 | v
53 4.3BSD Reno
54 |
55 *---------- 4.3BSD NET/2 -------------------+-------------*
56 | | | |
57386BSD 0.0 | | BSD/386 ALPHA
58 | | | |
59386BSD 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 | | | |
67FreeBSD 1.0 NetBSD 0.9 | BSD/386 1.1
68 | | .----- 4.4BSD Lite |
69FreeBSD 1.1 | / / | \ |
70 | | / / | \ |
71FreeBSD 1.1.5 .---|--------' / | \ |
72 | / | / | \ |
73FreeBSD 1.1.5.1 / | / | \ |
74 | / NetBSD 1.0 <-' | \ |
75 | / | | \ |
76FreeBSD 2.0 <--' | | BSD/OS 2.0
77 | \ | |
78FreeBSD 2.0.5 \ | BSD/OS 2.0.1
79 | \ .--- 4.4BSD Lite2 |
80 | \ | | | | |
81 | | FreeBSD 3.0 | | | |
82 | | NetBSD 1.3 | | |
83 | | OpenBSD 2.3 | |
84 | | BSD/OS 3.0 |
85FreeBSD 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 | | | | |
116 | | | OpenBSD 2.4 |
117FreeBSD 3.0 | v | |
118 | | NetBSD 1.3.3 | |
119 *---FreeBSD 3.1 | | |
120 | | | | BSD/OS 4.0.1
121 | FreeBSD 3.2 NetBSD 1.4 OpenBSD 2.5 |
122 | | | | | |
123 | FreeBSD 3.3 | NetBSD 1.4.1 | |
124 | | | | OpenBSD 2.6 |
125 | FreeBSD 3.4 | | | |
126 | | | | | BSD/OS 4.1
127FreeBSD 4.0 | | NetBSD 1.4.2 | |
128 | | | | | |
129 | | | | | |
130 | FreeBSD 3.5 | | OpenBSD 2.7 |
131 | | | | | |
132 | FreeBSD 3.5.1 | | | |
133 | | | | |
134 *---FreeBSD 4.1 | | | |
135 | | | | | |
136 | FreeBSD 4.1.1 | | | |
137 | | | v | |
138 | FreeBSD 4.2 | NetBSD 1.4.3 | |
139 | | | OpenBSD 2.8 BSD/OS 4.2
140 | | NetBSD 1.5 | |
141 | FreeBSD 4.3 | | v
142 | | | |
143 | v | |
144 | | |
145FreeBSD 5.0-current NetBSD -current OpenBSD -current
146 | | |
147 v v v
148
149
150Time
151----------------
152
153Time tolerance +/- 6 months, depending on which book/article you read; if it
154was the announcement in Usenet or if it was available as tape.
155
156[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
157 and John Quarterman. The Design and Implementation of
158 the 4.4BSD Operating System.
159[DOC] README, COPYRIGHT on tape.
160[QCU] Salus, Peter H. A quarter century of UNIX.
161[U25] Peter H. Salus. Unix at 25.
162[USE] Usenet announcement.
163[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
164 Changes in the Kernel in 2.9BSD. Second Berkeley Software
165 Distribution UNIX Version 2.9, July, 1983.
166[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
167 Volume 11, Info 4, April, 1987.
168[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
169 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
170[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
171[FBD] FreeBSD Project, The.
172[NBD] NetBSD Project, The.
173[OBD] OpenBSD Project, The.
174[dmr] Dennis Ritchie, via E-Mail
175[BSDI] Berkeley Software Design, Inc.
176
177Multics 1965
178UNIX Summer 1969
179 DEC PDP-7
180First Edition 1971-11-03 [QCU]
181 DEC PDP-11/20, Assembler
182Second Edition 1972-06-12 [QCU]
183 10 UNIX installations
184Third Edition 1973-02-xx [QCU]
185 Pipes, 16 installations
186Fourth Edition 1973-11-xx [QCU]
187 rewriting in C effected,
188 above 30 installations
189Fifth Edition 1974-06-xx [QCU]
190 above 50 installations
191Sixth Edition 1975-05-xx [QCU]
192 port to DEC Vax
193Seventh Edition 1979-01-xx [QCU]
194 first portable UNIX
195Eighth Edition 1985-02-xx [QCU]
196 VAX 11/750, VAX 11/780 [dmr]
197 descended from 4.1c BSD [dmr]
198 descended from 4.1 BSD [44B]
199 scooping-out and replacement of the character-device
200 and networking part by the streams mechanism
201
202Ninth Edition 1986-09-xx [QCU]
203Tenth Edition 1989-10-xx [QCU]
204
2051BSD late 1977
206 1978-03-09 [QCU]
207 PDP-11, Pascal, ex(1)
208 30 free copies of 1BSD sent out
209 35 tapes sold for 50 USD [QCU]
2102BSD mid 1978 [QCU]
211 75 2BSD tapes shipped
2122.7.9BSD ?? [SMS]
2132.8BSD 1981-07-xx [KSJ]
214
2152.8.1BSD 1982-01-xx [QCU]
216 set of performance improvements
2172.9BSD 1983-07-xx [KSJ]
2182.9.1BSD 1983-11-xx
2192.9BSD-Seismo 1985-08-xx [SMS]
2202.10BSD 1987-04-xx [KKK]
2212.10.1BSD 1989-01-xx [SMS]
2222.11BSD 1992-02-xx [SMS]
2232.11BSD rev #430 1999-12-13 [SMS]
224
22532V 1978-1[01]-xx [QCU]
2263BSD late 1979 [QCU]
227 virtual memory, page replacement,
228 demand paging
2294.0BSD 1980-10-xx
2304.1BSD 1981-06-xx
2314.1aBSD 1982-04-xx
232 alpha release, 100 sites, networking [44B]
2334.1bBSD internal release, fast filesystem [44B]
2344.1cBSD late 1982
235 beta release, IPC [44B]
2364.2BSD 1983-09-xx [QCU]
2374.3BSD 1986-06-xx [QCU]
238 1986-04-xx [KB]
2394.3BSD Tahoe 1988-06-xx [QCU]
2404.3BSD NET/1 1988-11-xx [QCU]
2414.3BSD Reno 1990-06-xx [QCU], [DOC]
2424.3BSD NET/2 1991-06-xx [QCU]
243
244BSD/386 ALPHA 1991-12-xx [BSDI]
245 first code released to people outside BSDI
246386BSD 0.0 1992-02-xx [DOC]
247BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
248BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
249386BSD 0.1 1992-07-28 [DOC]
2504.4BSD Alpha 1992-07-07
251BSD/386 0.9.3 1992-10-xx [BSDI]
252 first external gamma; G customers
253BSD/386 0.9.4 1992-12-xx [BSDI]
254 would have been 1.0 except for request
255 for preliminary injunction
256BSD/386 1.0 1993-03-xx [BSDI]
257 injunction denied; first official release
258NetBSD 0.8 1993-04-20 [NBD]
2594.4BSD 1993-06-01 [USE]
260NetBSD 0.9 1993-08-23 [NBD]
261FreeBSD 1.0 1993-11-xx [FBD]
262BSD/386 1.1 1994-02-xx [BSDI]
2634.4BSD Lite 1994-03-01 [USE]
264FreeBSD 1.1 1994-04-xx [FBD]
265FreeBSD 1.1.5.1 1994-07-xx [FBD]
266 supersedes 1.1.5 3 days after release.
267NetBSD 1.0 1994-10-26 [NBD]
268386BSD 1.0 1994-11-12 [USE]
269FreeBSD 2.0 1995-01-xx [FBD]
270BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
271FreeBSD 2.0.5 1995-06-10 [FBD]
272BSD/OS 2.0.1 1995-06-xx [BSDI]
2734.4BSD Lite Release 2 1995-06-xx [44B]
274 the true final distribution from the CSRG
275FreeBSD 2.1.0 1995-11-19 [FBD]
276NetBSD 1.1 1995-11-26 [NBD]
277BSD/OS 2.1 1996-01-xx [BSDI]
278FreeBSD 2.1.5 1996-07-14 [FBD]
279NetBSD 1.2 1996-10-04 [NBD]
280OpenBSD 2.0 1996-10-18 [OBD]
281FreeBSD 2.1.6 1996-11-16 [FBD]
282FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
283FreeBSD 2.1.7 1997-02-20 [FBD]
284BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
285FreeBSD 2.2.0 1997-03-16 [FBD]
286FreeBSD 2.2.1 1997-03-25 [FBD]
287FreeBSD 2.2.2 1997-05-16 [FBD]
288NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
289OpenBSD 2.1 1997-06-01 [OBD]
290FreeBSD 2.2.5 1997-10-22 [FBD]
291OpenBSD 2.2 1997-12-01 [OBD]
292NetBSD 1.3 1998-01-04 [NBD]
293FreeBSD 2.2.6 1998-03-25 [FBD]
294NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
295BSD/OS 3.1 1998-03-xx [BSDI]
296OpenBSD 2.3 1998-05-19 [OBD]
297NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
298FreeBSD 2.2.7 1998-07-22 [FBD]
299BSD/OS 4.0 1998-08-xx [BSDI]
300 2-lock MP support, ELF executables
301FreeBSD 3.0 1998-10-16 [FBD]
302 FreeBSD-3.0 is a snapshot from -current,
303 while 3.1 and 3.2 are from 3.x-stable which
304 was branched quite some time after 3.0-release
305FreeBSD 2.2.8 1998-11-29 [FBD]
306OpenBSD 2.4 1998-12-01 [OBD]
307NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
308FreeBSD 3.1 1999-02-15 [FBD]
309BSD/OS 4.0.1 1999-03-xx [BSDI]
310NetBSD 1.4 1999-05-12 [NBD]
311FreeBSD 3.2 1999-05-17 [FBD]
312OpenBSD 2.5 1999-05-19 [OBD]
313NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
314FreeBSD 3.3 1999-09-17 [FBD]
315OpenBSD 2.6 1999-12-01 [OBD]
316FreeBSD 3.4 1999-12-20 [FBD]
317BSD/OS 4.1 1999-12-xx [BSDI]
318FreeBSD 4.0 2000-03-13 [FBD]
319NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
320OpenBSD 2.7 2000-06-15 [OBD]
321FreeBSD 3.5 2000-06-24 [FBD]
322FreeBSD 4.1 2000-07-27 [FBD]
323FreeBSD 3.5.1 2000-07-28 [FBD]
324FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
325FreeBSD 4.2 2000-11-21 [FBD]
326NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
327BSD/OS 4.2 2000-11-29 [BSDI]
328OpenBSD 2.8 2000-12-01 [OBD]
329NetBSD 1.5 2000-12-06 [NBD]
330FreeBSD 4.3 2001-04-20 [FBD]
331
332
333Bibliography
334------------------------
335
336Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
337Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
338System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
339
340Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
341Company, Inc., 1994. ISBN 0-201-54777-5
342
343McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
344Quarterman. The Design and Implementation of the 4.4BSD Operating
345System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
346
347Doug McIlroy. Research Unix Reader.
348
349Michael G. Brown. The Role of BSD in the Development of Unix.
350Presented to the Tasmanian Unix Special Interest Group of the
351Australian Computer Society, Hobart, August 1993.
352
353Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
354URL: http://www.byte.com/art/9410/sec8/art3.htm
355
356Andreas Klemm, Lars K�ller. If you're going to San Francisco ...
357Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
358
359BSD Release Announcements collection.
360URL: http://www.de.FreeBSD.org/de/ftp/releases/
361
362BSD Hypertext Man Pages
363http://www.FreeBSD.org/cgi/man.cgi
364
365UNIX history graphing project
366http://minnie.cs.adfa.edu.au/Unix_History/index.html
367
368UNIX history
369http://perso.wanadoo.fr/levenez/unix/
370
| 1The UNIX system family tree: Research and BSD
2---------------------------------------------
3
4First Edition (V1)
5 |
6Second Edition (V2)
7 |
8Third Edition (V3)
9 |
10Fourth Edition (V4)
11 |
12Fifth Edition (V5)
13 |
14Sixth Edition (V6) -----*
15 \ |
16 \ |
17 \ |
18Seventh 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 / | |
38Eighth Edition | 2.9BSD-Seismo
39 | | |
40 +----<--- 4.2BSD 2.9.1BSD
41 | | |
42 +----<--- 4.3BSD -------------> 2.10BSD
43 | | / |
44Ninth Edition | / 2.10.1BSD
45 | 4.3BSD Tahoe-----+ |
46 | | \ |
47 | | \ |
48 v | 2.11BSD
49Tenth Edition | |
50 | 2.11BSD rev #430
51 4.3BSD NET/1 |
52 | v
53 4.3BSD Reno
54 |
55 *---------- 4.3BSD NET/2 -------------------+-------------*
56 | | | |
57386BSD 0.0 | | BSD/386 ALPHA
58 | | | |
59386BSD 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 | | | |
67FreeBSD 1.0 NetBSD 0.9 | BSD/386 1.1
68 | | .----- 4.4BSD Lite |
69FreeBSD 1.1 | / / | \ |
70 | | / / | \ |
71FreeBSD 1.1.5 .---|--------' / | \ |
72 | / | / | \ |
73FreeBSD 1.1.5.1 / | / | \ |
74 | / NetBSD 1.0 <-' | \ |
75 | / | | \ |
76FreeBSD 2.0 <--' | | BSD/OS 2.0
77 | \ | |
78FreeBSD 2.0.5 \ | BSD/OS 2.0.1
79 | \ .--- 4.4BSD Lite2 |
80 | \ | | | | |
81 | | FreeBSD 3.0 | | | |
82 | | NetBSD 1.3 | | |
83 | | OpenBSD 2.3 | |
84 | | BSD/OS 3.0 |
85FreeBSD 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 | | | | |
116 | | | OpenBSD 2.4 |
117FreeBSD 3.0 | v | |
118 | | NetBSD 1.3.3 | |
119 *---FreeBSD 3.1 | | |
120 | | | | BSD/OS 4.0.1
121 | FreeBSD 3.2 NetBSD 1.4 OpenBSD 2.5 |
122 | | | | | |
123 | FreeBSD 3.3 | NetBSD 1.4.1 | |
124 | | | | OpenBSD 2.6 |
125 | FreeBSD 3.4 | | | |
126 | | | | | BSD/OS 4.1
127FreeBSD 4.0 | | NetBSD 1.4.2 | |
128 | | | | | |
129 | | | | | |
130 | FreeBSD 3.5 | | OpenBSD 2.7 |
131 | | | | | |
132 | FreeBSD 3.5.1 | | | |
133 | | | | |
134 *---FreeBSD 4.1 | | | |
135 | | | | | |
136 | FreeBSD 4.1.1 | | | |
137 | | | v | |
138 | FreeBSD 4.2 | NetBSD 1.4.3 | |
139 | | | OpenBSD 2.8 BSD/OS 4.2
140 | | NetBSD 1.5 | |
141 | FreeBSD 4.3 | | v
142 | | | |
143 | v | |
144 | | |
145FreeBSD 5.0-current NetBSD -current OpenBSD -current
146 | | |
147 v v v
148
149
150Time
151----------------
152
153Time tolerance +/- 6 months, depending on which book/article you read; if it
154was the announcement in Usenet or if it was available as tape.
155
156[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
157 and John Quarterman. The Design and Implementation of
158 the 4.4BSD Operating System.
159[DOC] README, COPYRIGHT on tape.
160[QCU] Salus, Peter H. A quarter century of UNIX.
161[U25] Peter H. Salus. Unix at 25.
162[USE] Usenet announcement.
163[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
164 Changes in the Kernel in 2.9BSD. Second Berkeley Software
165 Distribution UNIX Version 2.9, July, 1983.
166[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
167 Volume 11, Info 4, April, 1987.
168[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
169 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
170[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
171[FBD] FreeBSD Project, The.
172[NBD] NetBSD Project, The.
173[OBD] OpenBSD Project, The.
174[dmr] Dennis Ritchie, via E-Mail
175[BSDI] Berkeley Software Design, Inc.
176
177Multics 1965
178UNIX Summer 1969
179 DEC PDP-7
180First Edition 1971-11-03 [QCU]
181 DEC PDP-11/20, Assembler
182Second Edition 1972-06-12 [QCU]
183 10 UNIX installations
184Third Edition 1973-02-xx [QCU]
185 Pipes, 16 installations
186Fourth Edition 1973-11-xx [QCU]
187 rewriting in C effected,
188 above 30 installations
189Fifth Edition 1974-06-xx [QCU]
190 above 50 installations
191Sixth Edition 1975-05-xx [QCU]
192 port to DEC Vax
193Seventh Edition 1979-01-xx [QCU]
194 first portable UNIX
195Eighth Edition 1985-02-xx [QCU]
196 VAX 11/750, VAX 11/780 [dmr]
197 descended from 4.1c BSD [dmr]
198 descended from 4.1 BSD [44B]
199 scooping-out and replacement of the character-device
200 and networking part by the streams mechanism
201
202Ninth Edition 1986-09-xx [QCU]
203Tenth Edition 1989-10-xx [QCU]
204
2051BSD late 1977
206 1978-03-09 [QCU]
207 PDP-11, Pascal, ex(1)
208 30 free copies of 1BSD sent out
209 35 tapes sold for 50 USD [QCU]
2102BSD mid 1978 [QCU]
211 75 2BSD tapes shipped
2122.7.9BSD ?? [SMS]
2132.8BSD 1981-07-xx [KSJ]
214
2152.8.1BSD 1982-01-xx [QCU]
216 set of performance improvements
2172.9BSD 1983-07-xx [KSJ]
2182.9.1BSD 1983-11-xx
2192.9BSD-Seismo 1985-08-xx [SMS]
2202.10BSD 1987-04-xx [KKK]
2212.10.1BSD 1989-01-xx [SMS]
2222.11BSD 1992-02-xx [SMS]
2232.11BSD rev #430 1999-12-13 [SMS]
224
22532V 1978-1[01]-xx [QCU]
2263BSD late 1979 [QCU]
227 virtual memory, page replacement,
228 demand paging
2294.0BSD 1980-10-xx
2304.1BSD 1981-06-xx
2314.1aBSD 1982-04-xx
232 alpha release, 100 sites, networking [44B]
2334.1bBSD internal release, fast filesystem [44B]
2344.1cBSD late 1982
235 beta release, IPC [44B]
2364.2BSD 1983-09-xx [QCU]
2374.3BSD 1986-06-xx [QCU]
238 1986-04-xx [KB]
2394.3BSD Tahoe 1988-06-xx [QCU]
2404.3BSD NET/1 1988-11-xx [QCU]
2414.3BSD Reno 1990-06-xx [QCU], [DOC]
2424.3BSD NET/2 1991-06-xx [QCU]
243
244BSD/386 ALPHA 1991-12-xx [BSDI]
245 first code released to people outside BSDI
246386BSD 0.0 1992-02-xx [DOC]
247BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
248BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
249386BSD 0.1 1992-07-28 [DOC]
2504.4BSD Alpha 1992-07-07
251BSD/386 0.9.3 1992-10-xx [BSDI]
252 first external gamma; G customers
253BSD/386 0.9.4 1992-12-xx [BSDI]
254 would have been 1.0 except for request
255 for preliminary injunction
256BSD/386 1.0 1993-03-xx [BSDI]
257 injunction denied; first official release
258NetBSD 0.8 1993-04-20 [NBD]
2594.4BSD 1993-06-01 [USE]
260NetBSD 0.9 1993-08-23 [NBD]
261FreeBSD 1.0 1993-11-xx [FBD]
262BSD/386 1.1 1994-02-xx [BSDI]
2634.4BSD Lite 1994-03-01 [USE]
264FreeBSD 1.1 1994-04-xx [FBD]
265FreeBSD 1.1.5.1 1994-07-xx [FBD]
266 supersedes 1.1.5 3 days after release.
267NetBSD 1.0 1994-10-26 [NBD]
268386BSD 1.0 1994-11-12 [USE]
269FreeBSD 2.0 1995-01-xx [FBD]
270BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
271FreeBSD 2.0.5 1995-06-10 [FBD]
272BSD/OS 2.0.1 1995-06-xx [BSDI]
2734.4BSD Lite Release 2 1995-06-xx [44B]
274 the true final distribution from the CSRG
275FreeBSD 2.1.0 1995-11-19 [FBD]
276NetBSD 1.1 1995-11-26 [NBD]
277BSD/OS 2.1 1996-01-xx [BSDI]
278FreeBSD 2.1.5 1996-07-14 [FBD]
279NetBSD 1.2 1996-10-04 [NBD]
280OpenBSD 2.0 1996-10-18 [OBD]
281FreeBSD 2.1.6 1996-11-16 [FBD]
282FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
283FreeBSD 2.1.7 1997-02-20 [FBD]
284BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
285FreeBSD 2.2.0 1997-03-16 [FBD]
286FreeBSD 2.2.1 1997-03-25 [FBD]
287FreeBSD 2.2.2 1997-05-16 [FBD]
288NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
289OpenBSD 2.1 1997-06-01 [OBD]
290FreeBSD 2.2.5 1997-10-22 [FBD]
291OpenBSD 2.2 1997-12-01 [OBD]
292NetBSD 1.3 1998-01-04 [NBD]
293FreeBSD 2.2.6 1998-03-25 [FBD]
294NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
295BSD/OS 3.1 1998-03-xx [BSDI]
296OpenBSD 2.3 1998-05-19 [OBD]
297NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
298FreeBSD 2.2.7 1998-07-22 [FBD]
299BSD/OS 4.0 1998-08-xx [BSDI]
300 2-lock MP support, ELF executables
301FreeBSD 3.0 1998-10-16 [FBD]
302 FreeBSD-3.0 is a snapshot from -current,
303 while 3.1 and 3.2 are from 3.x-stable which
304 was branched quite some time after 3.0-release
305FreeBSD 2.2.8 1998-11-29 [FBD]
306OpenBSD 2.4 1998-12-01 [OBD]
307NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
308FreeBSD 3.1 1999-02-15 [FBD]
309BSD/OS 4.0.1 1999-03-xx [BSDI]
310NetBSD 1.4 1999-05-12 [NBD]
311FreeBSD 3.2 1999-05-17 [FBD]
312OpenBSD 2.5 1999-05-19 [OBD]
313NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
314FreeBSD 3.3 1999-09-17 [FBD]
315OpenBSD 2.6 1999-12-01 [OBD]
316FreeBSD 3.4 1999-12-20 [FBD]
317BSD/OS 4.1 1999-12-xx [BSDI]
318FreeBSD 4.0 2000-03-13 [FBD]
319NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
320OpenBSD 2.7 2000-06-15 [OBD]
321FreeBSD 3.5 2000-06-24 [FBD]
322FreeBSD 4.1 2000-07-27 [FBD]
323FreeBSD 3.5.1 2000-07-28 [FBD]
324FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
325FreeBSD 4.2 2000-11-21 [FBD]
326NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
327BSD/OS 4.2 2000-11-29 [BSDI]
328OpenBSD 2.8 2000-12-01 [OBD]
329NetBSD 1.5 2000-12-06 [NBD]
330FreeBSD 4.3 2001-04-20 [FBD]
331
332
333Bibliography
334------------------------
335
336Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
337Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
338System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
339
340Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
341Company, Inc., 1994. ISBN 0-201-54777-5
342
343McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
344Quarterman. The Design and Implementation of the 4.4BSD Operating
345System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
346
347Doug McIlroy. Research Unix Reader.
348
349Michael G. Brown. The Role of BSD in the Development of Unix.
350Presented to the Tasmanian Unix Special Interest Group of the
351Australian Computer Society, Hobart, August 1993.
352
353Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
354URL: http://www.byte.com/art/9410/sec8/art3.htm
355
356Andreas Klemm, Lars K�ller. If you're going to San Francisco ...
357Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
358
359BSD Release Announcements collection.
360URL: http://www.de.FreeBSD.org/de/ftp/releases/
361
362BSD Hypertext Man Pages
363http://www.FreeBSD.org/cgi/man.cgi
364
365UNIX history graphing project
366http://minnie.cs.adfa.edu.au/Unix_History/index.html
367
368UNIX history
369http://perso.wanadoo.fr/levenez/unix/
370
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