ifconfig(8): Use correct interface name when setting flags
[dragonfly.git] / share / misc / bsd-family-tree
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                2.79BSD
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  |     FreeBSD 2.2.8 | |     |    |            |             |
114  |         |         | |     |    |            |             |
115  |         v         | |     |    |        OpenBSD 2.4       |
116  |     FreeBSD 2.2.9 | |     |    |            |             |
117  |                   | |     |    |            |             |
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       |
123  |       |          |  |  |  |    |            |             |
124  |       |          |  |  |  |    |            |             |
125  |       |          |  |  |  |    |            |             |
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    |             |
131  |           |      |  |  |  |    |            |             |
132  |           |      |  |  |  |    |            |             |
133  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
134  |           |      |  |  |  |    |            |             |
135  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
136  |                  |  |  |  |    |            |             |
137  *---FreeBSD 4.1    |  |  |  |    |            |             |
138  |      |           |  |  |  |    |            |             |
139  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
140  |      |           |  | /   |    |            |             |
141  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
142  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
143  |      |             |      |                 |             |
144  |      |             |      |                 |             |
145  |      |           10.0     *--NetBSD 1.5     |             |
146  |   FreeBSD 4.3      |      |    |            |             |
147  |      |             |      |    |        OpenBSD 2.9       |
148  |      |             |      | NetBSD 1.5.1    |             |
149  |      |             |      |    |            |             |
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  |                 |             |
158  |      |            10.2    |                 |             |
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
164  |      |         \   |      |    |            |             |
165  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
166  |      |          |  |      |    |            |
167  |      |          |  |      | NetBSD 1.6.2    |
168  |      |          |  |      |    |            |
169  |      |          |  |      |    |        OpenBSD 3.5
170  |      |          |  |      |    v            |
171  |   FreeBSD 4.10  |  |      |                 |
172  |      |          |  |      |                 |
173  |   FreeBSD 4.11  |  |      |                 |
174  |                 |  |      |                 |
175  |                  `-|------|-----------------|---------------------.
176  |                    |      |                 |                      \
177 FreeBSD 5.0           |      |                 |                       |
178  |                    |      |                 |                       |
179 FreeBSD 5.1           |      |                 |               DragonFly 1.0
180  |          \         |      |                 |                       |
181  |           ----- Mac OS X  |                 |                       |
182  |                   10.3    |                 |                       |
183 FreeBSD 5.2           |      |                 |                       |
184  |      |             |      |                 |                       |
185  |   FreeBSD 5.2.1    |      |                 |                       |
186  |                    |      |                 |                       |
187  *-------FreeBSD 5.3  |      |                 |                       |
188  |           |        |      |             OpenBSD 3.6                 |
189  |           |        |      *--NetBSD 2.0     |                       |
190  |           |        |      | |  |            |               DragonFly 1.2.0
191  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
192  |           |       10.4    | |  |            |                       |
193  |       FreeBSD 5.4  |      | |  |            |                       |
194  |           |        |      | |  |        OpenBSD 3.7                 |
195  |           |        |      | | NetBSD 2.0.3  |                       |
196  |           |        |      | |  |            |                       |
197  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
198  |    6.0    |        |      | |               |                       |
199  |     |     |        |      |  \              |                       |
200  |     |     |        |      | NetBSD 2.1      |                       |
201  |     |     |        |      |                 |                       |
202  |     |     |        |      *--NetBSD 3.0     |                       |
203  |     |     |        |      | |  |            |               DragonFly 1.4.0
204  |     |     |        |      | |  |        OpenBSD 3.9                 |
205  |  FreeBSD  |        |      | |  |            |                       |
206  |    6.1    |        |      | |  |            |                       |
207  |     |  FreeBSD 5.5 |      | |  |            |                       |
208  |     |              |      | | NetBSD 3.0.1  |               DragonFly 1.6.0
209  |     |              |      | |  |            |                       |
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
217  |     |           Mac OS X  |                 |                       |
218  |     |             10.5    |                 |                       |
219  |     |              |      |             OpenBSD 4.2                 |
220  |     |              |      *--NetBSD 4.0     |                       |
221  | FreeBSD 6.3        |      |    |            |                       |
222  |            \       |      |    |            |                       |
223  *--FreeBSD    |      |      |    |            |               DragonFly 1.12.0
224  |    7.0      |      |      |    |            |                       |
225  |     |       |      |      |    |        OpenBSD 4.3                 |
226  |     |       |      |      | NetBSD          |               DragonFly 2.0.0
227  |     |    FreeBSD   |      |  4.0.1      OpenBSD 4.4                 |
228  |     |      6.4     |      |                 |                       |
229  |     |              |      |                 |                       |
230  |  FreeBSD 7.1       |      |                 |                       |
231  |     |              |      |                 |               DragonFly 2.2.0
232  |  FreeBSD 7.2       |      *--NetBSD     OpenBSD 4.5                 |
233  |             \      |      |   5.0           |                       |
234  |             \      |      |  / | \          |                       |
235  |              |  Mac OS X  |  | |  \         |                       |
236  |              |    10.6    |  | |   \        |                       |
237  |              |     |      |  | | NetBSD     |               DragonFly 2.4.0
238  |              |     |      |  | |  5.0.1 OpenBSD 4.6                 |
239  |              |     |      |  | |    |       |                       |
240  *--FreeBSD     |     |      |  | |    |       |                       |
241  |    8.0       |     |      |  | |    |       |                       |
242  |     |     FreeBSD  |      |  | | NetBSD     |                       |
243  |     |       7.3    |      |  | |  5.0.2     |               DragonFly 2.6.0
244  |     |        |     |      |  | |        OpenBSD 4.7                 |
245  |  FreeBSD     |     |      |  | |            |                       |
246  |    8.1       |     |      |  | |            |                       |
247  |     |        |     |      |  | |            |               DragonFly 2.8.2
248  |     |        |     |      |  | |        OpenBSD 4.8                 |
249  |     |        |     |      |  | *--NetBSD    |                       |
250  |  FreeBSD  FreeBSD  |      |  |    5.1       |                       |
251  |    8.2      7.4    |      |  |     |        |               DragonFly 2.10.1
252  |     |              |      |  |     |    OpenBSD 4.9                 |
253  |     `-----.     Mac OS X  |  |     |        |                       |
254  |            \      10.7    |  |     |        |                       |
255  |             |      |      |  |     |    OpenBSD 5.0                 |
256  *--FreeBSD    |      |      |  |     |        |                       |
257  |    9.0      |      |      |  |  NetBSD      |               DragonFly 3.0.1
258  |     |    FreeBSD   |      |  |   5.1.2      |                       |
259  |     |      8.3     |      |  |     |        |                       |
260  |     |       |      |      |  |  NetBSD      |                       |
261  |     |       |      |      |  |   5.1.3      |                       |
262  |     |       |      |      |  |     |        |                       |
263  |     |       |      |      |  |  NetBSD      |                       |
264  |     |       |      |      |  |   5.1.4      |                       |
265  |     |       |      |      |  |          OpenBSD 5.1                 |
266  |     |       |   Mac OS X  |  `--------.     |                       |
267  |     |       |     10.8    |           |     |                       |
268  |     |       |      |      *--NetBSD   |     |                       |
269  |     |       |      |      |    6.0    |     |                       | 
270  |     |       |      |      |    | |    | OpenBSD 5.2         DragonFly 3.2.1
271  |  FreeBSD    |      |      |    | | NetBSD   |                       |
272  |    9.1      |      |      |    | |   5.2    |                       |
273  |     |       |      |      |    | |    |     |                       |
274  |     |       |      |      |    | | NetBSD   |                       |
275  |     |       |      |      |    | |  5.2.1   |                       |
276  |     |       |      |      |    | |    |     |                       |
277  |     |       |      |      |    | | NetBSD   |                       |
278  |     |       |      |      |    | |  5.2.2   |                       |
279  |     |       |      |      |    | |          |                       |
280  |     |       |      |      |    |  \         |                       |
281  |     |       |      |      |    |   NetBSD   |                       |
282  |     |       |      |      |    |    6.0.1   |                       |
283  |     |       |      |      |    |      | OpenBSD 5.3         DragonFly 3.4.1
284  |     |       |      |      |    |   NetBSD   |                       |
285  |     |       |      |      |    |    6.0.2   |                       |
286  |     |       |      |      |    |      |     |                       |
287  |     |       |      |      |    |   NetBSD   |                       |
288  |     |       |      |      |    |    6.0.3   |                       |
289  |     |       |      |      |    |      |     |                       |
290  |     |       |      |      |    |   NetBSD   |                       |
291  |     |       |      |      |    |    6.0.4   |                       |
292  |     |       |      |      |    |      |     |                       |
293  |     |       |      |      |    |   NetBSD   |                       |
294  |     |       |      |      |    |    6.0.5   |                       |
295  |     |       |      |      |    |      |     |                       |
296  |     |       |      |      |    |   NetBSD   |                       |
297  |     |       |      |      |    |    6.0.6   |                       |
298  |     |       |      |      |    |            |                       |
299  |     |       |      |      |    *--NetBSD    |                       |
300  |     |       |      |      |         6.1     |                       |
301  |     |    FreeBSD   |      |          |      |                       |
302  |     |      8.4     |      |       NetBSD    |                       |
303  |     |       |      |      |        6.1.1    |                       |
304  |     |              |      |          |      |                       |
305  |  FreeBSD           |      |       NetBSD    |                       |
306  |    9.2             |      |        6.1.2    |                       |
307  |     |           Mac OS X  |          |      |                       |
308  |     |             10.9    |          |  OpenBSD 5.4                 |
309  |     `-----.        |      |          |      |               DragonFly 3.6.0
310  |            \       |      |          |      |                       |
311  *--FreeBSD    |      |      |       NetBSD    |                       |
312  |   10.0      |      |      |        6.1.3    |                       |
313  |     |       |      |      |          |      |                       |
314  |     |       |      |      |          |      |               DragonFly 3.6.1
315  |     |       |      |      |          |      |                       |
316  |     |       |      |      |          |      |                       |
317  |     |       |      |      |          |      |               DragonFly 3.6.2
318  |     |       |      |      |       NetBSD    |                       |
319  |     |       |      |      |        6.1.4    |                       |
320  |     |       |      |      |          |      |                       |
321  |     |       |      |      |          |  OpenBSD 5.5                 |
322  |     |       |      |      |          |      |                       |
323  |     |       |      |      |          |      |               DragonFly 3.8.0
324  |     |       |      |      |          |      |                       |
325  |     |       |      |      |          |      |                       |
326  |     |       |      |      |          |      |               DragonFly 3.8.1
327  |     |       |      |      |          |      |                       |
328  |     |       |      |      |          |      |                       |
329  |     |       |      |      |          |      |               DragonFly 3.6.3
330  |     |       |      |      |          |      |                       |
331  |     |    FreeBSD   |      |          |      |                       |
332  |     |      9.3     |      |          |      |                       |
333  |     |              |      |       NetBSD    |               DragonFly 3.8.2
334  |     |              |      |        6.1.5    |                       |
335  |     |           Mac OS X  |                 |                       |
336  |     |             10.10   |                 |                       |
337  |     |              |      |             OpenBSD 5.6                 |
338  |  FreeBSD           |      |                 |                       |
339  |   10.1             |      |                 |               DragonFly 4.0.1
340  |     |              |      |                 |                       |
341  |     |              |      |                 |               DragonFly 4.0.2
342  |     |              |      |                 |                       |
343  |     |              |      |                 |               DragonFly 4.0.3
344  |     |              |      |                 |                       |
345  |     |              |      |                 |               DragonFly 4.0.4
346  |     |              |      |                 |                       |
347  |     |              |      |                 |               DragonFly 4.0.5
348  |     |              |      |                 |                       |
349  |     |              |      |             OpenBSD 5.7                 |
350  |     |              |      |                 |               DragonFly 4.2.0
351  |  FreeBSD           |      |                 |                       |
352  |   10.2             |      |                 |                       |
353  |     |            macOS    *--NetBSD 7.0     |                       |
354  |     |            10.11    |   | |       OpenBSD 5.8                 |
355  |     |              |      |   | `--.        |               DragonFly 4.4.1
356  |  FreeBSD           |      |   |    |    OpenBSD 5.9                 |
357  |   10.3             |      |   |    |        |                       |
358  |     |              |      |   | NetBSD      |                       |
359  |     |              |      |   |  7.0.1      |                       |
360  |     `------.       |      |   |    |        |               DragonFly 4.6.0
361  |            |       |      |   |    |        |                       |
362  |            |       |      |   |    |        |                       |
363  *--FreeBSD   |     macOS    |   |    |    OpenBSD 6.0                 |
364  |   11.0     |     10.12    |   | NetBSD      |                       |
365  |     |      |       |      |   |  7.0.2      |                       |
366  |     |      |       |      |   |             |                       |
367  |     |      |       |      |   *--NetBSD     |                       |
368  |     |      |       |      |   |   7.1       |                       |
369  |     |      |       |      |   |    |        |                       |
370  |     |      |       |      |   |    |        |                       |
371  |     |      |     macOS    |   |    |        |               DragonFly 4.8.0
372  |     |      |     10.13    |   |    |    OpenBSD 6.1                 |
373  |  FreeBSD   |       |      |   |    |        |               DragonFly 5.0.0
374  |   11.1  FreeBSD    |      |   |    |        |                       |
375  |     |    10.4      |      |   |    |    OpenBSD 6.2         DragonFly 5.0.1
376  |     |              |      |   |    |        |                       |
377  |     `------.       |      |   | NetBSD      |               DragonFly 5.0.2
378  |            |       |      |   |  7.1.1      |                       |
379  |            |       |      |   |    |        |                       |
380  |            |       |      |   | NetBSD      |                       |
381  |            |       |      |   |  7.1.2      `--.                    |
382  |            |       |      |   |                |                    |
383  |            |       |      |   `-----.      OpenBSD 6.3              |
384  |            |       |      *--NetBSD |          |            DragonFly 5.2.0
385  |            |       |      |   8.0   |          |                    |
386  |            |       |      |   |     |          |            DragonFly 5.2.1
387  |            |       |      |   |     |          |                    |
388  |            |       |      |   |     |          |            DragonFly 5.2.2
389  |         FreeBSD    |      |   |     *--NetBSD  |                    |
390  |           11.2     |      |   |         7.2    |                    |
391  |            |     macOS    |   |                |                    |
392  |            |     10.14    |   |            OpenBSD 6.4              |
393  |            |       |      |   |                |                    |
394  |            |       |      |   |                |            DragonFly 5.4.0
395  *--FreeBSD   |       |      |   |                |                    |
396  |   12.0     |       |      |   |                |            DragonFly 5.4.1
397  |     |      |       |      |   |            OpenBSD 6.5              |
398  |     |      |       |      |   |                |                    |
399  |     |      |       |      |  NetBSD            |                    |
400  |     |      |       |      |   8.1              |            DragonFly 5.6
401  |     |      |       |      |   |                |                    |
402  |     |      |       |      |   |                |            DragonFly 5.6.1
403  |     |   FreeBSD  macOS    |   |                |                    |
404  |     |     11.3   10.15    |   |                |                    |
405  |  FreeBSD           |      |   |            OpenBSD 6.6              |
406  |   12.1           macOS    |   `-------.        |                    |
407  |     |           10.15.1   |           |        |            DragonFly 5.6.2
408  |     |              |      *--NetBSD   |        |                    |
409  |     v              |      |   9.0     |        |                    |
410  |                    |      |           |        |                    |
411  |                    |      |           |        |            DragonFly 5.8
412  |                    |      |           |        |                    |
413  |                    |      |           |        |            DragonFly 5.6.3
414  |                    |      |        NetBSD      |                    |
415  |                    |      |         8.2        |                    |
416  |                    |      |                    |                    |
417 FreeBSD 13 -current   |  NetBSD -current   OpenBSD -current    DragonFly -current
418  |                    |      |                    |                    |
419  v                    v      v                    v                    v
420
421 Time
422 ----------------
423
424 Time tolerance +/- 6 months, depending on which book/article you read; if it
425 was the announcement in Usenet or if it was available as tape.
426
427 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
428         and John Quarterman. The Design and Implementation of
429         the 4.4BSD Operating System.
430 [APL] Apple website [https://www.apple.com/macosx/]
431 [BSDI] Berkeley Software Design, Inc.
432 [DFB] DragonFlyBSD Project, The.
433 [DOC] README, COPYRIGHT on tape.
434 [FBD] FreeBSD Project, The.
435 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
436         Volume 11, Info 4, April, 1987.
437 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
438         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
439 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
440         Changes in the Kernel in 2.9BSD. Second Berkeley Software
441         Distribution UNIX Version 2.9, July, 1983.
442 [NBD] NetBSD Project, The.
443 [OBD] OpenBSD Project, The.
444 [QCU] Salus, Peter H. A quarter century of UNIX.
445 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
446 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
447 [USE] Usenet announcement.
448 [WRS] Wind River Systems, Inc.
449 [dmr] Dennis Ritchie, via E-Mail
450
451 Multics                 1965
452 UNIX                    Summer 1969
453                                 DEC PDP-7
454 First   Edition         1971-11-03 [QCU]
455                                 DEC PDP-11/20, Assembler
456 Second  Edition         1972-06-12 [QCU]
457                                 10 UNIX installations
458 Third   Edition         1973-02-xx [QCU]
459                                 Pipes, 16 installations
460 Fourth  Edition         1973-11-xx [QCU]
461                                 rewriting in C effected,
462                                 above 30 installations
463 Fifth   Edition         1974-06-xx [QCU]
464                                 above 50 installations
465 Sixth   Edition         1975-05-xx [QCU]
466                                 port to DEC Vax
467 Seventh Edition         1979-01-xx [QCU] 1979-01-10 [TUHS]
468                                 first portable UNIX
469 Eighth  Edition         1985-02-xx [QCU]
470                                 VAX 11/750, VAX 11/780 [dmr]
471                                 descended from 4.1c BSD [dmr]
472                                 descended from 4.1 BSD [44B]
473                         scooping-out and replacement of the character-device
474                         and networking part by the streams mechanism
475
476 Ninth   Edition         1986-09-xx [QCU]
477 Tenth   Edition         1989-10-xx [QCU]
478
479 1BSD                    late 1977
480                         1978-01-16 [DOC]
481                         1978-03-09 [QCU]
482                                 PDP-11, Pascal, ex(1)
483                                 30 free copies of 1BSD sent out
484                                 35 tapes sold for 50 USD [QCU]
485 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
486                                 75 2BSD tapes shipped
487 2.79BSD                 1980-04-xx [TUHS]
488 2.8BSD                  1981-07-xx [KSJ]
489
490 2.8.1BSD                1982-01-xx [QCU]
491                                 set of performance improvements
492 2.9BSD                  1983-07-xx [KSJ]
493 2.9.1BSD                1983-11-xx [TUHS]
494 2.9BSD-Seismo           1985-08-xx [SMS]
495 2.10BSD                 1987-04-xx [KKK]
496 2.10.1BSD               1989-01-xx [SMS]
497 2.11BSD                 1991-03-14 [SMS]
498 2.11BSD rev #430        1999-12-13 [SMS]
499
500 32V                     1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
501 3BSD                    late 1979 [QCU] March 1980 [TUHS]
502                                 virtual memory, page replacement,
503                                 demand paging
504 4.0BSD                  1980-10-xx
505 4.1BSD                  1981-07-08 [DOC]
506 4.1aBSD                 1982-04-xx
507                                 alpha release, 100 sites, networking [44B]
508 4.1bBSD                         internal release, fast filesystem [44B]
509 4.1cBSD                 late 1982
510                                 beta release, IPC [44B]
511 4.2BSD                  1983-09-xx [QCU]
512                         1983-08-03 [DOC]
513 4.3BSD                  1986-06-xx [QCU]
514                         1986-04-05 [KB], [DOC]
515 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
516 4.3BSD NET/1            1988-11-xx [QCU]
517                         1989-01-01 [DOC]
518 4.3BSD Reno             1990-06-29 [QCU], [DOC]
519 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
520
521 BSD/386 ALPHA           1991-12-xx [BSDI]
522                                 first code released to people outside BSDI
523 386BSD 0.0              1992-02-xx [DOC]
524 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
525 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
526 386BSD 0.1              1992-07-28 [DOC]
527 4.4BSD Alpha            1992-07-07
528 BSD/386 0.9.3           1992-10-xx [BSDI]
529                                 first external gamma; G customers
530 BSD/386 0.9.4           1992-12-xx [BSDI]
531                                 would have been 1.0 except for request
532                                 for preliminary injunction
533 BSD/386 1.0             1993-03-xx [BSDI]
534                                 injunction denied; first official release
535 NetBSD 0.8              1993-04-20 [NBD]
536 4.4BSD                  1993-06-01 [USE]
537 NetBSD 0.9              1993-08-23 [NBD]
538 FreeBSD 1.0             1993-11-01 [FBD]
539 FreeBSD 1.0.2           1993-11-14 [FBD]
540                                 supersedes 1.0 13 days after release.
541 BSD/386 1.1             1994-02-xx [BSDI]
542 4.4BSD Lite             1994-03-01 [USE]
543 FreeBSD 1.1             1994-05-07 [FBD]
544 FreeBSD 1.1.5           1994-06-30 [FBD]
545 FreeBSD 1.1.5.1         1994-07-05 [FBD]
546                                 supersedes 1.1.5 5 days after release.
547 NetBSD 1.0              1994-10-26 [NBD]
548 386BSD 1.0              1994-11-12 [USE]
549 FreeBSD 2.0             1994-11-23 [FBD]
550 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
551 FreeBSD 2.0.5           1995-06-10 [FBD]
552 BSD/OS 2.0.1            1995-06-xx [BSDI]
553 4.4BSD Lite Release 2   1995-06-xx [44B]
554                                 the true final distribution from the CSRG
555 FreeBSD 2.1.0           1995-11-19 [FBD]
556 NetBSD 1.1              1995-11-26 [NBD]
557 BSD/OS 2.1              1996-01-xx [BSDI]
558 FreeBSD 2.1.5           1996-07-14 [FBD]
559 NetBSD 1.2              1996-10-04 [NBD]
560 OpenBSD 2.0             1996-10-18 [OBD]
561 FreeBSD 2.1.6           1996-11-16 [FBD]
562 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
563 Rhapsody                1997-xx-xx
564 FreeBSD 2.1.7           1997-02-20 [FBD]
565 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
566 FreeBSD 2.2.0           1997-03-16 [FBD]
567 FreeBSD 2.2.1           1997-03-25 [FBD]
568 FreeBSD 2.2.2           1997-05-16 [FBD]
569 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
570 OpenBSD 2.1             1997-06-01 [OBD]
571 FreeBSD 2.2.5           1997-10-22 [FBD]
572 OpenBSD 2.2             1997-12-01 [OBD]
573 NetBSD 1.3              1998-01-04 [NBD]
574 FreeBSD 2.2.6           1998-03-25 [FBD]
575 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
576 BSD/OS 3.1              1998-03-xx [BSDI]
577 OpenBSD 2.3             1998-05-19 [OBD]
578 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
579 FreeBSD 2.2.7           1998-07-22 [FBD]
580 BSD/OS 4.0              1998-08-xx [BSDI]
581                                 2-lock MP support, ELF executables
582 FreeBSD 3.0             1998-10-16 [FBD]
583                                 FreeBSD-3.0 is a snapshot from -current,
584                                 while 3.1 and 3.2 are from 3.x-stable which
585                                 was branched quite some time after 3.0-release
586 FreeBSD 2.2.8           1998-11-29 [FBD]
587 OpenBSD 2.4             1998-12-01 [OBD]
588 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
589 FreeBSD 3.1             1999-02-15 [FBD]
590 BSD/OS 4.0.1            1999-03-xx [BSDI]
591 NetBSD 1.4              1999-05-12 [NBD]
592 FreeBSD 3.2             1999-05-17 [FBD]
593 OpenBSD 2.5             1999-05-19 [OBD]
594 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
595 FreeBSD 3.3             1999-09-17 [FBD]
596 OpenBSD 2.6             1999-12-01 [OBD]
597 FreeBSD 3.4             1999-12-20 [FBD]
598 BSD/OS 4.1              1999-12-xx [BSDI]
599 FreeBSD 4.0             2000-03-13 [FBD]
600 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
601 OpenBSD 2.7             2000-06-15 [OBD]
602 FreeBSD 3.5             2000-06-24 [FBD]
603 FreeBSD 4.1             2000-07-27 [FBD]
604 FreeBSD 3.5.1           2000-07-28 [FBD]
605 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
606 FreeBSD 4.2             2000-11-21 [FBD]
607 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
608 BSD/OS 4.2              2000-11-29 [BSDI]
609 OpenBSD 2.8             2000-12-01 [OBD]
610 NetBSD 1.5              2000-12-06 [NBD]
611 Mac OS X 10.0           2001-03-24 [APL]
612 FreeBSD 4.3             2001-04-20 [FBD]
613 OpenBSD 2.9             2001-06-01 [OBD]
614 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
615 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
616 FreeBSD 4.4             2001-09-18 [FBD]
617 Mac OS X 10.1           2001-09-29 [APL]
618 OpenBSD 3.0             2001-12-01 [OBD]
619 FreeBSD 4.5             2002-01-29 [FBD]
620 BSD/OS 4.3              2002-03-14 [WRS]
621 OpenBSD 3.1             2002-05-19 [OBD]
622 FreeBSD 4.6             2002-06-15 [FBD]
623 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
624 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
625 Mac OS X 10.2           2002-08-23 [APL]
626 NetBSD 1.6              2002-09-14 [NBD]
627 FreeBSD 4.7             2002-10-08 [FBD]
628 OpenBSD 3.2             2002-11-01 [OBD]
629 FreeBSD 5.0             2003-01-17 [FBD]
630                                 FreeBSD 5.0 is a separate branch off of
631                                 -current, similar to 3.0.
632 FreeBSD 4.8             2003-04-03 [FBD]
633 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
634 OpenBSD 3.3             2003-05-01 [OBD]
635 BSD/OS 5.0              2003-05-?? [WRS]
636 FreeBSD 5.1             2003-06-09 [FBD]
637 Mac OS X 10.3           2003-10-24 [APL]
638 FreeBSD 4.9             2003-10-28 [FBD]
639 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
640 OpenBSD 3.4             2003-11-01 [OBD]
641 FreeBSD 5.2             2004-01-12 [FBD]
642 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
643 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
644 OpenBSD 3.5             2004-04-01 [OBD]
645 FreeBSD 4.10            2004-05-27 [FBD]
646 DragonFly 1.0           2004-07-12 [DFB]
647 OpenBSD 3.6             2004-10-29 [OBD]
648 FreeBSD 5.3             2004-11-06 [FBD]
649 NetBSD 2.0              2004-12-09 [NBD]
650 FreeBSD 4.11            2005-01-25 [FBD]
651 DragonFly 1.2.0         2005-04-08 [DFB]
652 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
653 Mac OS X 10.4           2005-04-29 [APL]
654 FreeBSD 5.4             2005-05-09 [FBD]
655 OpenBSD 3.7             2005-05-19 [OBD]
656 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
657 OpenBSD 3.8             2005-11-01 [OBD]
658 FreeBSD 6.0             2005-11-01 [FBD]
659 NetBSD 2.1              2005-11-02 [NBD]
660 NetBSD 3.0              2005-12-23 [NBD]
661 DragonFly 1.4.0         2006-01-08 [DFB]
662 FreeBSD 2.2.9           2006-04-01 [FBD]
663 OpenBSD 3.9             2006-05-01 [OBD]
664 FreeBSD 6.1             2006-05-08 [FBD]
665 FreeBSD 5.5             2006-05-25 [FBD]
666 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
667 DragonFly 1.6.0         2006-07-24 [DFB]
668 OpenBSD 4.0             2006-11-01 [OBD]
669 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
670 NetBSD 3.1              2006-11-04 [NBD]
671 FreeBSD 6.2             2007-01-15 [FBD]
672 DragonFly 1.8.0         2007-01-30 [DFB]
673 OpenBSD 4.1             2007-05-01 [OBD]
674 DragonFly 1.10.0        2007-08-06 [DFB]
675 Mac OS X 10.5           2007-10-26 [APL]
676 OpenBSD 4.2             2007-11-01 [OBD]
677 NetBSD 4.0              2007-12-19 [NBD]
678 FreeBSD 6.3             2008-01-18 [FBD]
679 DragonFly 1.12.0        2008-02-26 [DFB]
680 FreeBSD 7.0             2008-02-27 [FBD]
681 OpenBSD 4.3             2008-05-01 [OBD]
682 DragonFly 2.0.0         2008-07-21 [DFB]
683 OpenBSD 4.4             2008-11-01 [OBD]
684 FreeBSD 6.4             2008-11-28 [FBD]
685 FreeBSD 7.1             2009-01-04 [FBD]
686 DragonFly 2.2.0         2009-02-17 [DFB]
687 NetBSD 5.0              2009-04-29 [NBD]
688 OpenBSD 4.5             2009-05-01 [OBD]
689 FreeBSD 7.2             2009-05-04 [FBD]
690 Mac OS X 10.6           2009-06-08 [APL]
691 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
692 DragonFly 2.4.0         2009-09-16 [DFB]
693 OpenBSD 4.6             2009-10-18 [OBD]
694 FreeBSD 8.0             2009-11-26 [FBD]
695 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
696 FreeBSD 7.3             2010-03-23 [FBD]
697 DragonFly 2.6.0         2010-03-28 [DFB]
698 OpenBSD 4.7             2010-05-19 [OBD]
699 FreeBSD 8.1             2010-07-24 [FBD]
700 DragonFly 2.8.2         2010-10-30 [DFB]
701 OpenBSD 4.8             2010-11-01 [OBD]
702 NetBSD 5.1              2010-11-19 [NBD]
703 FreeBSD 7.4             2011-02-24 [FBD]
704 FreeBSD 8.2             2011-02-24 [FBD]
705 DragonFly 2.10.1        2011-04-26 [DFB]
706 OpenBSD 4.9             2011-05-01 [OBD]
707 Mac OS X 10.7           2011-07-20 [APL]
708 OpenBSD 5.0             2011-11-01 [OBD]
709 FreeBSD 9.0             2012-01-12 [FBD]
710 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
711 DragonFly 3.0.1         2012-02-21 [DFB]
712 FreeBSD 8.3             2012-04-18 [FBD]
713 OpenBSD 5.1             2012-05-01 [OBD]
714 Mac OS X 10.8           2012-07-25 [APL]
715 NetBSD 6.0              2012-10-17 [NBD]
716 OpenBSD 5.2             2012-11-01 [OBD]
717 DragonFly 3.2.1         2012-11-02 [DFB]
718 NetBSD 5.2              2012-12-03 [NBD]
719 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
720 FreeBSD 9.1             2012-12-30 [FBD]
721 DragonFly 3.4.1         2013-04-29 [DFB]
722 OpenBSD 5.3             2013-05-01 [OBD]
723 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
724 NetBSD 6.1              2013-05-18 [NBD]
725 FreeBSD 8.4             2013-06-07 [FBD]
726 NetBSD 6.1.1            2013-08-22 [NBD]
727 NetBSD 5.1.3            2013-09-29 [NBD]
728 NetBSD 5.2.1            2013-09-29 [NBD]
729 FreeBSD 9.2             2013-09-30 [FBD]
730 NetBSD 6.0.3            2013-09-30 [NBD]
731 NetBSD 6.1.2            2013-09-30 [NBD]
732 Mac OS X 10.9           2013-10-22 [APL]
733 OpenBSD 5.4             2013-11-01 [OBD]
734 DragonFly 3.6.0         2013-11-25 [DFB]
735 FreeBSD 10.0            2014-01-20 [FBD]
736 NetBSD 5.1.4            2014-01-25 [NBD]
737 NetBSD 5.2.2            2014-01-25 [NBD]
738 NetBSD 6.0.4            2014-01-25 [NBD]
739 NetBSD 6.1.3            2014-01-25 [NBD]
740 DragonFly 3.6.1         2014-02-22 [DFB]
741 DragonFly 3.6.2         2014-04-10 [DFB]
742 NetBSD 6.0.5            2014-04-12 [NBD]
743 NetBSD 6.1.4            2014-04-12 [NBD]
744 OpenBSD 5.5             2014-05-01 [OBD]
745 DragonFly 3.8.0         2014-06-04 [DFB]
746 DragonFly 3.8.1         2014-06-16 [DFB]
747 DragonFly 3.6.3         2014-06-17 [DFB]
748 FreeBSD 9.3             2014-07-05 [FBD]
749 DragonFly 3.8.2         2014-08-08 [DFB]
750 NetBSD 6.0.6            2014-09-22 [NBD]
751 NetBSD 6.1.5            2014-09-22 [NBD]
752 Mac OS X 10.10          2014-10-16 [APL]
753 OpenBSD 5.6             2014-11-01 [OBD]
754 FreeBSD 10.1            2014-11-14 [FBD]
755 DragonFly 4.0.1         2014-11-25 [DFB]
756 DragonFly 4.0.2         2015-01-07 [DFB]
757 DragonFly 4.0.3         2015-01-21 [DFB]
758 DragonFly 4.0.4         2015-03-09 [DFB]
759 DragonFly 4.0.5         2015-03-23 [DFB]
760 OpenBSD 5.7             2015-05-01 [OBD]
761 DragonFly 4.2.0         2015-06-29 [DFB]
762 FreeBSD 10.2            2015-08-13 [FBD]
763 NetBSD 7.0              2015-09-25 [NBD]
764 OS X 10.11              2015-09-30 [APL]
765 OpenBSD 5.8             2015-10-18 [OBD]
766 DragonFly 4.4.1         2015-12-07 [DFB]
767 OpenBSD 5.9             2016-03-29 [OBD]
768 FreeBSD 10.3            2016-04-04 [FBD]
769 NetBSD 7.0.1            2016-05-22 [NBD]
770 DragonFly 4.6.0         2016-08-02 [DFB]
771 OpenBSD 6.0             2016-09-01 [OBD]
772 macOS 10.12             2016-09-20 [APL]
773 FreeBSD 11.0            2016-10-10 [FBD]
774 NetBSD 7.0.2            2016-10-21 [NBD]
775 NetBSD 7.1              2017-03-11 [NBD]
776 DragonFly 4.8.0         2017-03-27 [DFB]
777 OpenBSD 6.1             2017-04-11 [OBD]
778 FreeBSD 11.1            2017-07-26 [FBD]
779 macOS 10.13             2017-09-25 [APL]
780 FreeBSD 10.4            2017-10-03 [FBD]
781 OpenBSD 6.2             2017-10-09 [OBD]
782 DragonFly 5.0.0         2017-10-16 [DFB]
783 DragonFly 5.0.1         2017-11-06 [DFB]
784 DragonFly 5.0.2         2017-12-04 [DFB]
785 NetBSD 7.1.1            2017-12-22 [NBD]
786 NetBSD 7.1.2            2018-03-15 [NBD]
787 OpenBSD 6.3             2018-04-02 [OBD]
788 DragonFly 5.2.0         2018-04-10 [DFB]
789 DragonFly 5.2.1         2018-05-20 [DFB]
790 DragonFly 5.2.2         2018-06-18 [DFB]
791 FreeBSD 11.2            2018-06-27 [FBD]
792 NetBSD 8.0              2018-07-17 [NBD]
793 NetBSD 7.2              2018-08-29 [NBD]
794 macOS 10.14             2018-09-24 [APL]
795 OpenBSD 6.4             2018-10-18 [OBD]
796 DragonFly 5.4.0         2018-12-03 [DFB]
797 FreeBSD 12.0            2018-12-11 [FBD]
798 DragonFly 5.4.1         2018-12-24 [DFB]
799 OpenBSD 6.5             2019-05-01 [OBD]
800 NetBSD 8.1              2019-06-04 [NBD]
801 DragonFly 5.6           2019-06-17 [DFB]
802 DragonFly 5.6.1         2019-06-19 [DFB]
803 FreeBSD 11.3            2019-07-09 [FBD]
804 DragonFly 5.6.2         2019-08-11 [DFB]
805 OpenBSD 6.6             2019-10-17 [OBD]
806 macOS 10.15             2019-10-07 [APL]
807 macOS 10.15.1           2019-10-29 [APL] (security/critical release)
808 FreeBSD 12.1            2019-11-04 [FBD]
809 NetBSD 9.0              2020-02-14 [NBD]
810 DragonFly 5.8           2020-03-03 [DFB]
811 DragonFly 5.6.3         2020-03-11 [DFB]
812 NetBSD 8.2              2020-03-31 [NBD]
813
814 Bibliography
815 ------------------------
816
817 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
818 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
819 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
820
821 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
822 Company, Inc., 1994. ISBN 0-201-54777-5
823
824 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
825 Quarterman. The Design and Implementation of the 4.4BSD Operating
826 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
827
828 McKusick, Marshall Kirk, George Neville-Neil. The Design and
829 Implementation of the FreeBSD Operating System.
830 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
831
832 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
833 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
834 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
835
836 Doug McIlroy. Research Unix Reader.
837
838 Michael G. Brown. The Role of BSD in the Development of Unix.
839 Presented to the Tasmanian Unix Special Interest Group of the
840 Australian Computer Society, Hobart, August 1993.
841
842 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
843 URL: http://www.byte.com/art/9410/sec8/art3.htm
844
845 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
846 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
847
848 BSD Release Announcements collection.
849 URL: https://www.FreeBSD.org/releases/
850
851 BSD Hypertext Man Pages
852 URL: https://www.FreeBSD.org/cgi/man.cgi
853
854 UNIX history graphing project
855 URL: http://minnie.tuhs.org/Unix_History/index.html
856
857 UNIX history
858 URL: http://www.levenez.com/unix/
859
860 James Howard: The BSD Family Tree
861 URL: http://ezine.daemonnews.org/200104/bsd_family.html
862 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
863
864
865 Acknowledgments
866 ---------------
867
868 Josh Gilliam for suggestions, bug fixes, and finding very old
869 original BSD announcements from Usenet or tapes.
870
871 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
872
873 --
874 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
875 URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
876
877 $FreeBSD: head/share/misc/bsd-family-tree 362420 2020-06-20 04:07:44Z imp $