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  |         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  |      |             |      |                 |             |
 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    |             |
 155  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 156  |      |            10.2    |                 |             |
 157  |   FreeBSD 4.7      |      |                 |             |
 158  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 159  |   FreeBSD 4.8      |      |    |            |             |
 160  |      |             |      | NetBSD 1.6.1    |             |
 161  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 162  |      |         \   |      |    |            |             |
 163  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 164  |      |          |  |      |    |            |
 165  |      |          |  |      | NetBSD 1.6.2    |
 166  |      |          |  |      |    |            |
 167  |      |          |  |      |    |        OpenBSD 3.5
 168  |      |          |  |      |    v            |
 169  |   FreeBSD 4.10  |  |      |                 |
 170  |      |          |  |      |                 |
 171  |   FreeBSD 4.11  |  |      |                 |
 172  |                 |  |      |                 |
 173  |                  `-|------|-----------------|---------------------.
 174  |                    |      |                 |                      \
 175 FreeBSD 5.0           |      |                 |                       |
 176  |                    |      |                 |                       |
 177 FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 178  |          \         |      |                 |                       |
 179  |           ----- Mac OS X  |                 |                       |
 180  |                   10.3    |                 |                       |
 181 FreeBSD 5.2           |      |                 |                       |
 182  |      |             |      |                 |                       |
 183  |   FreeBSD 5.2.1    |      |                 |                       |
 184  |                    |      |                 |                       |
 185  *-------FreeBSD 5.3  |      |                 |                       |
 186  |           |        |      |             OpenBSD 3.6                 |
 187  |           |        |   NetBSD 2.0           |                       |
 188  |           |        |      | |  |            |                DragonFly 1.2.0
 189  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 190  |           |       10.4    | |  |            |                       |
 191  |       FreeBSD 5.4  |      | |  |            |                       |
 192  |           |        |      | |  |        OpenBSD 3.7                 |
 193  |           |        |      | | NetBSD 2.0.3  |                       |
 194  |           |        |      | |  |            |                       |
 195  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 196  |    6.0    |        |      | |               |                       |
 197  |     |     |        |      |  \              |                       |
 198  |     |     |        |      | NetBSD 2.1      |                       |
 199  |     |     |        |      |                 |                       |
 200  |     |     |        |   NetBSD 3.0           |                       |
 201  |     |     |        |      | |  |            |                DragonFly 1.4.0
 202  |     |     |        |      | |  |        OpenBSD 3.9                 |
 203  |  FreeBSD  |        |      | |  |            |                       |
 204  |    6.1    |        |      | |  |            |                       |
 205  |     |  FreeBSD 5.5 |      | |  |            |                       |
 206  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 207  |     |              |      | |  |            |                       |
 208  |     |              |      | |  |        OpenBSD 4.0                 |
 209  |     |              |      | | NetBSD 3.0.2  |                       |
 210  |     |              |      | NetBSD 3.1      |                       |
 211  | FreeBSD 6.2        |      |                 |                       |
 212  |     |              |      |                 |                DragonFly 1.8.0
 213  |     |              |      |             OpenBSD 4.1                 |
 214  |     |              |      |                 |                DragonFly 1.10.0
 215  |     |           Mac OS X  |                 |                       |
 216  |     |             10.5    |                 |                       |
 217  |     |              |      |             OpenBSD 4.2                 |
 218  |     |              |   NetBSD 4.0           |                       |
 219  | FreeBSD 6.3        |      |                 |                       |
 220  |            \       |      |                 |                       |
 221  *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
 222  |    7.0      |      |      |                 |                       |
 223  |     |       |      |      |             OpenBSD 4.3                 |
 224  |     |       |      |      |                 |                DragonFly 2.0.0
 225  |     |    FreeBSD   |      |             OpenBSD 4.4                 |
 226  |     |      6.4     |      |                 |                       |
 227  |     |              |      |                 |                       |
 228  |  FreeBSD 7.1       |      |                 |                       |
 229  |     |              |      |                 |                DragonFly 2.2.0
 230  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 231  |             \      |      |    |            |                       |
 232  |              |  Mac OS X  |    |            |                       |
 233  |              |    10.6    |    |            |                       |
 234  |              |     |      |    |            |                DragonFly 2.4.0
 235  |              |     |      |    |        OpenBSD 4.6                 |
 236  |              |     |      |    |            |                       |
 237  *--FreeBSD     |     |      |    |            |                       |
 238  |    8.0       |     |      |    |            |                       |
 239  |     |     FreeBSD  |      |    |            |                       |
 240  |     |       7.3    |      |    |            |                DragonFly 2.6.0
 241  |     |        |     |      |    |        OpenBSD 4.7                 |
 242  |  FreeBSD     |     |      |    |            |                       |
 243  |    8.1       |     |      |    |            |                       |
 244  |     |        |     |      |    |            |                DragonFly 2.8.2
 245  |     |        |     |      |    |        OpenBSD 4.8                 |
 246  |     |        |     |      | NetBSD 5.1      |                       |
 247  |  FreeBSD  FreeBSD  |      |                 |                       |
 248  |    8.2      7.4    |      |                 |               DragonFly 2.10.1
 249  |     |              |      |             OpenBSD 4.9                 |
 250  |     `-----.     Mac OS X  |                 |                       |
 251  |            \      10.7    |                 |                       |
 252  |             |      |      |             OpenBSD 5.0                 |
 253  *--FreeBSD    |      |      |                 |                       |
 254  |    9.0      |      |      |                 |               DragonFly 3.0.1
 255  |     v    FreeBSD   |      |                 |                       |
 256  |            8.3     |      |             OpenBSD 5.1                 |
 257  |                 Mac OS X  |                 |                       |
 258  |                   10.8    |                 |                       |
 259 FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
 260  |                    |      |                 |                       |
 261  v                    v      v                 v                       v
 262
 263 Time
 264 ----------------
 265
 266 Time tolerance +/- 6 months, depending on which book/article you read; if it
 267 was the announcement in Usenet or if it was available as tape.
 268
 269 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 270         and John Quarterman. The Design and Implementation of
 271         the 4.4BSD Operating System.
 272 [APL] Apple website [http://www.apple.com/macosx/]
 273 [BSDI] Berkeley Software Design, Inc.
 274 [DFB] DragonFlyBSD Project, The.
 275 [DOC] README, COPYRIGHT on tape.
 276 [FBD] FreeBSD Project, The.
 277 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 278         Volume 11, Info 4, April, 1987.
 279 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 280         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 281 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 282         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 283         Distribution UNIX Version 2.9, July, 1983.
 284 [NBD] NetBSD Project, The.
 285 [OBD] OpenBSD Project, The.
 286 [QCU] Salus, Peter H. A quarter century of UNIX.
 287 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 288 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 289 [USE] Usenet announcement.
 290 [WRS] Wind River Systems, Inc.
 291 [dmr] Dennis Ritchie, via E-Mail
 292
 293 Multics                 1965
 294 UNIX                    Summer 1969
 295                                 DEC PDP-7
 296 First   Edition         1971-11-03 [QCU]
 297                                 DEC PDP-11/20, Assembler
 298 Second  Edition         1972-06-12 [QCU]
 299                                 10 UNIX installations
 300 Third   Edition         1973-02-xx [QCU]
 301                                 Pipes, 16 installations
 302 Fourth  Edition         1973-11-xx [QCU]
 303                                 rewriting in C effected,
 304                                 above 30 installations
 305 Fifth   Edition         1974-06-xx [QCU]
 306                                 above 50 installations
 307 Sixth   Edition         1975-05-xx [QCU]
 308                                 port to DEC Vax
 309 Seventh Edition         1979-01-xx [QCU]
 310                                 first portable UNIX
 311 Eighth  Edition         1985-02-xx [QCU]
 312                                 VAX 11/750, VAX 11/780 [dmr]
 313                                 descended from 4.1c BSD [dmr]
 314                                 descended from 4.1 BSD [44B]
 315                         scooping-out and replacement of the character-device
 316                         and networking part by the streams mechanism
 317
 318 Ninth   Edition         1986-09-xx [QCU]
 319 Tenth   Edition         1989-10-xx [QCU]
 320
 321 1BSD                    late 1977
 322                         1978-03-09 [QCU]
 323                                 PDP-11, Pascal, ex(1)
 324                                 30 free copies of 1BSD sent out
 325                                 35 tapes sold for 50 USD [QCU]
 326 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 327                                 75 2BSD tapes shipped
 328 2.79BSD                 1980-04-xx [TUHS]
 329 2.8BSD                  1981-07-xx [KSJ]
 330
 331 2.8.1BSD                1982-01-xx [QCU]
 332                                 set of performance improvements
 333 2.9BSD                  1983-07-xx [KSJ]
 334 2.9.1BSD                1983-11-xx [TUHS]
 335 2.9BSD-Seismo           1985-08-xx [SMS]
 336 2.10BSD                 1987-04-xx [KKK]
 337 2.10.1BSD               1989-01-xx [SMS]
 338 2.11BSD                 1992-02-xx [SMS]
 339 2.11BSD rev #430        1999-12-13 [SMS]
 340
 341 32V                     1978-1[01]-xx [QCU]
 342 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 343                                 virtual memory, page replacement,
 344                                 demand paging
 345 4.0BSD                  1980-10-xx
 346 4.1BSD                  1981-07-08 [DOC]
 347 4.1aBSD                 1982-04-xx
 348                                 alpha release, 100 sites, networking [44B]
 349 4.1bBSD                         internal release, fast filesystem [44B]
 350 4.1cBSD                 late 1982
 351                                 beta release, IPC [44B]
 352 4.2BSD                  1983-09-xx [QCU]
 353                         1983-08-03 [DOC]
 354 4.3BSD                  1986-06-xx [QCU]
 355                         1986-04-05 [KB], [DOC]
 356 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 357 4.3BSD NET/1            1988-11-xx [QCU]
 358                         1989-01-01 [DOC]
 359 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 360 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 361
 362 BSD/386 ALPHA           1991-12-xx [BSDI]
 363                                 first code released to people outside BSDI
 364 386BSD 0.0              1992-02-xx [DOC]
 365 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 366 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 367 386BSD 0.1              1992-07-28 [DOC]
 368 4.4BSD Alpha            1992-07-07
 369 BSD/386 0.9.3           1992-10-xx [BSDI]
 370                                 first external gamma; G customers
 371 BSD/386 0.9.4           1992-12-xx [BSDI]
 372                                 would have been 1.0 except for request
 373                                 for preliminary injunction
 374 BSD/386 1.0             1993-03-xx [BSDI]
 375                                 injunction denied; first official release
 376 NetBSD 0.8              1993-04-20 [NBD]
 377 4.4BSD                  1993-06-01 [USE]
 378 NetBSD 0.9              1993-08-23 [NBD]
 379 FreeBSD 1.0             1993-11-01 [FBD]
 380 FreeBSD 1.0.2           1993-11-14 [FBD]
 381                                 supersedes 1.0 13 days after release.
 382 BSD/386 1.1             1994-02-xx [BSDI]
 383 4.4BSD Lite             1994-03-01 [USE]
 384 FreeBSD 1.1             1994-05-07 [FBD]
 385 FreeBSD 1.1.5           1994-06-30 [FBD]
 386 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 387                                 supersedes 1.1.5 5 days after release.
 388 NetBSD 1.0              1994-10-26 [NBD]
 389 386BSD 1.0              1994-11-12 [USE]
 390 FreeBSD 2.0             1994-11-23 [FBD]
 391 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 392 FreeBSD 2.0.5           1995-06-10 [FBD]
 393 BSD/OS 2.0.1            1995-06-xx [BSDI]
 394 4.4BSD Lite Release 2   1995-06-xx [44B]
 395                                 the true final distribution from the CSRG
 396 FreeBSD 2.1.0           1995-11-19 [FBD]
 397 NetBSD 1.1              1995-11-26 [NBD]
 398 BSD/OS 2.1              1996-01-xx [BSDI]
 399 FreeBSD 2.1.5           1996-07-14 [FBD]
 400 NetBSD 1.2              1996-10-04 [NBD]
 401 OpenBSD 2.0             1996-10-18 [OBD]
 402 FreeBSD 2.1.6           1996-11-16 [FBD]
 403 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 404 Rhapsody                1997-xx-xx
 405 FreeBSD 2.1.7           1997-02-20 [FBD]
 406 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 407 FreeBSD 2.2.0           1997-03-16 [FBD]
 408 FreeBSD 2.2.1           1997-03-25 [FBD]
 409 FreeBSD 2.2.2           1997-05-16 [FBD]
 410 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 411 OpenBSD 2.1             1997-06-01 [OBD]
 412 FreeBSD 2.2.5           1997-10-22 [FBD]
 413 OpenBSD 2.2             1997-12-01 [OBD]
 414 NetBSD 1.3              1998-01-04 [NBD]
 415 FreeBSD 2.2.6           1998-03-25 [FBD]
 416 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 417 BSD/OS 3.1              1998-03-xx [BSDI]
 418 OpenBSD 2.3             1998-05-19 [OBD]
 419 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 420 FreeBSD 2.2.7           1998-07-22 [FBD]
 421 BSD/OS 4.0              1998-08-xx [BSDI]
 422                                 2-lock MP support, ELF executables
 423 FreeBSD 3.0             1998-10-16 [FBD]
 424                                 FreeBSD-3.0 is a snapshot from -current,
 425                                 while 3.1 and 3.2 are from 3.x-stable which
 426                                 was branched quite some time after 3.0-release
 427 FreeBSD 2.2.8           1998-11-29 [FBD]
 428 OpenBSD 2.4             1998-12-01 [OBD]
 429 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 430 FreeBSD 3.1             1999-02-15 [FBD]
 431 BSD/OS 4.0.1            1999-03-xx [BSDI]
 432 NetBSD 1.4              1999-05-12 [NBD]
 433 FreeBSD 3.2             1999-05-17 [FBD]
 434 OpenBSD 2.5             1999-05-19 [OBD]
 435 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 436 FreeBSD 3.3             1999-09-17 [FBD]
 437 OpenBSD 2.6             1999-12-01 [OBD]
 438 FreeBSD 3.4             1999-12-20 [FBD]
 439 BSD/OS 4.1              1999-12-xx [BSDI]
 440 FreeBSD 4.0             2000-03-13 [FBD]
 441 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 442 OpenBSD 2.7             2000-06-15 [OBD]
 443 FreeBSD 3.5             2000-06-24 [FBD]
 444 FreeBSD 4.1             2000-07-27 [FBD]
 445 FreeBSD 3.5.1           2000-07-28 [FBD]
 446 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 447 FreeBSD 4.2             2000-11-21 [FBD]
 448 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 449 BSD/OS 4.2              2000-11-29 [BSDI]
 450 OpenBSD 2.8             2000-12-01 [OBD]
 451 NetBSD 1.5              2000-12-06 [NBD]
 452 Mac OS X 10.0           2001-03-24 [APL]
 453 FreeBSD 4.3             2001-04-20 [FBD]
 454 OpenBSD 2.9             2001-06-01 [OBD]
 455 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 456 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 457 FreeBSD 4.4             2001-09-18 [FBD]
 458 Mac OS X 10.1           2001-09-29 [APL]
 459 OpenBSD 3.0             2001-12-01 [OBD]
 460 FreeBSD 4.5             2002-01-29 [FBD]
 461 BSD/OS 4.3              2002-03-14 [WRS]
 462 OpenBSD 3.1             2002-05-19 [OBD]
 463 FreeBSD 4.6             2002-06-15 [FBD]
 464 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 465 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 466 Mac OS X 10.2           2002-08-23 [APL]
 467 NetBSD 1.6              2002-09-14 [NBD]
 468 FreeBSD 4.7             2002-10-08 [FBD]
 469 OpenBSD 3.2             2002-11-01 [OBD]
 470 FreeBSD 5.0             2003-01-17 [FBD]
 471                                 FreeBSD 5.0 is a separate branch off of
 472                                 -current, similar to 3.0.
 473 FreeBSD 4.8             2003-04-03 [FBD]
 474 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 475 OpenBSD 3.3             2003-05-01 [OBD]
 476 BSD/OS 5.0              2003-05-?? [WRS]
 477 FreeBSD 5.1             2003-06-09 [FBD]
 478 Mac OS X 10.3           2003-10-24 [APL]
 479 FreeBSD 4.9             2003-10-28 [FBD]
 480 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 481 OpenBSD 3.4             2003-11-01 [OBD]
 482 FreeBSD 5.2             2004-01-12 [FBD]
 483 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 484 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 485 OpenBSD 3.5             2004-04-01 [OBD]
 486 FreeBSD 4.10            2004-05-27 [FBD]
 487 DragonFly 1.0           2004-07-12 [DFB]
 488 OpenBSD 3.6             2004-10-29 [OBD]
 489 FreeBSD 5.3             2004-11-06 [FBD]
 490 NetBSD 2.0              2004-12-09 [NBD]
 491 FreeBSD 4.11            2005-01-25 [FBD]
 492 DragonFly 1.2.0         2005-04-08 [DFB]
 493 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 494 Mac OS X 10.4           2005-04-29 [APL]
 495 FreeBSD 5.4             2005-05-09 [FBD]
 496 OpenBSD 3.7             2005-05-19 [OBD]
 497 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 498 OpenBSD 3.8             2005-11-01 [OBD]
 499 FreeBSD 6.0             2005-11-01 [FBD]
 500 NetBSD 2.1              2005-11-02 [NBD]
 501 NetBSD 3.0              2005-12-23 [NBD]
 502 DragonFly 1.4.0         2006-01-08 [DFB]
 503 OpenBSD 3.9             2006-05-01 [OBD]
 504 FreeBSD 6.1             2006-05-08 [FBD]
 505 FreeBSD 5.5             2006-05-25 [FBD]
 506 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 507 DragonFly 1.6.0         2006-07-24 [DFB]
 508 OpenBSD 4.0             2006-11-01 [OBD]
 509 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 510 NetBSD 3.1              2006-11-04 [NBD]
 511 FreeBSD 6.2             2007-01-15 [FBD]
 512 DragonFly 1.8.0         2007-01-30 [DFB]
 513 OpenBSD 4.1             2007-05-01 [OBD]
 514 DragonFly 1.10.0        2007-08-06 [DFB]
 515 Mac OS X 10.5           2007-10-26 [APL]
 516 OpenBSD 4.2             2007-11-01 [OBD]
 517 NetBSD 4.0              2007-12-19 [NBD]
 518 FreeBSD 6.3             2008-01-18 [FBD]
 519 DragonFly 1.12.0        2008-02-26 [DFB]
 520 FreeBSD 7.0             2008-02-27 [FBD]
 521 OpenBSD 4.3             2008-05-01 [OBD]
 522 DragonFly 2.0.0         2008-07-21 [DFB]
 523 OpenBSD 4.4             2008-11-01 [OBD]
 524 FreeBSD 6.4             2008-11-28 [FBD]
 525 FreeBSD 7.1             2009-01-04 [FBD]
 526 DragonFly 2.2.0         2009-02-17 [DFB]
 527 NetBSD 5.0              2009-04-29 [NBD]
 528 OpenBSD 4.5             2009-05-01 [OBD]
 529 FreeBSD 7.2             2009-05-04 [FBD]
 530 Mac OS X 10.6           2009-06-08 [APL]
 531 DragonFly 2.4.0         2009-09-16 [DFB]
 532 OpenBSD 4.6             2009-10-18 [OBD]
 533 FreeBSD 8.0             2009-11-26 [FBD]
 534 FreeBSD 7.3             2010-03-23 [FBD]
 535 DragonFly 2.6.0         2010-03-28 [DFB]
 536 OpenBSD 4.7             2010-05-19 [OBD]
 537 FreeBSD 8.1             2010-07-24 [FBD]
 538 DragonFly 2.8.2         2010-10-30 [DFB]
 539 OpenBSD 4.8             2010-11-01 [OBD]
 540 NetBSD 5.1              2010-11-19 [NBD]
 541 FreeBSD 7.4             2011-02-24 [FBD]
 542 FreeBSD 8.2             2011-02-24 [FBD]
 543 DragonFly 2.10.1        2011-04-26 [DFB]
 544 OpenBSD 4.9             2011-05-01 [OBD]
 545 Mac OS X 10.7           2011-07-20 [APL]
 546 OpenBSD 5.0             2011-11-01 [OBD]
 547 FreeBSD 9.0             2012-01-12 [FBD]
 548 DragonFly 3.0.1         2012-02-21 [DFB]
 549 FreeBSD 8.3             2012-04-18 [FBD]
 550 OpenBSD 5.1             2012-05-01 [OBD]
 551 Mac OS X 10.8           2012-07-25 [APL]
 552
 553 Bibliography
 554 ------------------------
 555
 556 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 557 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 558 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 559
 560 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 561 Company, Inc., 1994. ISBN 0-201-54777-5
 562
 563 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 564 Quarterman. The Design and Implementation of the 4.4BSD Operating
 565 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 566
 567 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 568 Implementation of the FreeBSD Operating System.
 569 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 570
 571 Doug McIlroy. Research Unix Reader.
 572
 573 Michael G. Brown. The Role of BSD in the Development of Unix.
 574 Presented to the Tasmanian Unix Special Interest Group of the
 575 Australian Computer Society, Hobart, August 1993.
 576
 577 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 578 URL: http://www.byte.com/art/9410/sec8/art3.htm
 579
 580 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 581 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 582
 583 BSD Release Announcements collection.
 584 URL: http://www.FreeBSD.org/releases/
 585
 586 BSD Hypertext Man Pages
 587 URL: http://www.FreeBSD.org/cgi/man.cgi
 588
 589 UNIX history graphing project
 590 URL: http://minnie.tuhs.org/Unix_History/index.html
 591
 592 UNIX history
 593 URL: http://www.levenez.com/unix/
 594
 595 James Howard: The BSD Family Tree
 596 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 597 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 598
 599
 600 Acknowledgments
 601 ---------------
 602
 603 Josh Gilliam for suggestions, bug fixes, and finding very old
 604 original BSD announcements from Usenet or tapes.
 605
 606 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 607
 608 --
 609 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 610 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 611
 612 $FreeBSD: src/share/misc/bsd-family-tree,v 1.156 2012/07/26 11:51:29 pluknet Exp $