6/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               2.7.9BSD
  29                   |                      |
  30                4.1BSD --------------> 2.8BSD
  31                   |                      |
  32               4.1aBSD -----------\       |
  33                   |                \     |
  34               4.1bBSD                \   |
  35                   |                    \ |
  36       *------ 4.1cBSD --------------> 2.9BSD
  37      /            |                      |
  38 Eighth Edition    |                   2.9BSD-Seismo
  39      |            |                      |
  40      +----<--- 4.2BSD               2.9.1BSD
  41      |            |                      |
  42      +----<--- 4.3BSD -------------> 2.10BSD
  43      |            |               /      |
  44 Ninth Edition     |              / 2.10.1BSD
  45      |         4.3BSD Tahoe-----+        |
  46      |            |              \       |
  47      |            |                \     |
  48      v            |                  2.11BSD
  49 Tenth Edition     |                      |
  50                   |                  2.11BSD rev #430
  51                4.3BSD NET/1              |
  52                   |                      v
  53                4.3BSD Reno
  54                   |
  55    *---------- 4.3BSD NET/2 -------------------+-------------*
  56    |                    |                      |             |
  57 386BSD 0.0              |                      |           BSD/386 ALPHA
  58    |                    |                      |             |
  59 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
  60    |     \              |                  4.4BSD Alpha      |
  61    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
  62    |                    |                  4.4BSD            |
  63    |                    |                    / |             |
  64    |                    |   4.4BSD-Encumbered  |             |
  65    |                 NetBSD 0.8                |           BSD/386 1.0
  66    |                    |                      |             |
  67 FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
  68    |                    |           .----- 4.4BSD Lite       |
  69 FreeBSD 1.1             |          /   /       |     \       |
  70    |                    |         /   /        |      \      |
  71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
  72    |               /    |           /          |        \    |
  73 FreeBSD 1.1.5.1   /     |          /           |         \   |
  74    |             /   NetBSD 1.0 <-'            |          \  |
  75    |            /       |                      |           \ |
  76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
  77    |                     \                     |             |
  78 FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
  79    |                 .-----\------------- 4.4BSD Lite2       |
  80    |                 |      \             |  |   |   |       |
  81    |                 | .-----|------Rhapsody |   |   |       |
  82    |                 | |     |        NetBSD 1.3 |   |       |
  83    |                 | |     |           OpenBSD 2.3 |       |
  84    |                 | |     |                BSD/OS 3.0     |
  85 FreeBSD 2.1          | |     |                               |
  86  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
  87  | FreeBSD 2.1.5     | |     |              \                |
  88  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
  89  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
  90  |     |             | |     |   \             |             |
  91  | FreeBSD 2.1.6.1   | |     |    \            |             |
  92  |     |             | |     |     \           |             |
  93  | FreeBSD 2.1.7     | |     |      |          |             |
  94  |     |             | |     |  NetBSD 1.2.1   |             |
  95  | FreeBSD 2.1.7.1   | |     |                 |             |
  96  |                   | |     |                 |             |
  97  |                   | |     |                 |             |
  98  *-FreeBSD 2.2       | |     |                 |             |
  99  |        \          | |     |                 |             |
 100  |     FreeBSD 2.2.1 | |     |                 |             |
 101  |         |         | |     |                 |             |
 102  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 103  |         |         | |     |                 |             |
 104  |     FreeBSD 2.2.5 | |     |                 |             |
 105  |         |         | |     |             OpenBSD 2.2       |
 106  |         |         | |  NetBSD 1.3           |             |
 107  |     FreeBSD 2.2.6 | |     |    |            |             |
 108  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 109  |         |         | |     |    |        OpenBSD 2.3       |
 110  |         |         | |     | NetBSD 1.3.2    |             |
 111  |     FreeBSD 2.2.7 | |     |    |            |             |
 112  |         |         | |     |    |            |           BSD/OS 4.0
 113  |         v         | |     |    |            |             |
 114  |     FreeBSD 2.2.8 | |     |    |            |             |
 115  |                   | |     |    |        OpenBSD 2.4       |
 116 FreeBSD 3.0 <--------* |     |    v            |             |
 117  |                     |     | NetBSD 1.3.3    |             |
 118  *---FreeBSD 3.1       |     |                 |             |
 119  |       |             |     |                 |           BSD/OS 4.0.1
 120  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 121  |       |          |  |  |  |    |            |             |
 122  |       |          |  |  |  |    |            |             |
 123  |       |          |  |  |  |    |            |             |
 124  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 125  |       |          |  |  |  |    |        OpenBSD 2.6       |
 126  |   FreeBSD 3.4    |  |  |  |    |            |             |
 127  |           |      |  |  |  |    |            |           BSD/OS 4.1
 128 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 129  |           |      |  |  |  |    |            |             |
 130  |           |      |  |  |  |    |            |             |
 131  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 132  |           |      |  |  |  |    |            |             |
 133  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 134  |                  |  |  |  |    |            |             |
 135  *---FreeBSD 4.1    |  |  |  |    |            |             |
 136  |      |           |  | (?) |    |            |             |
 137  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 138  |      |           |  | /   |    |            |             |
 139  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 140  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 141  |      |             |      |                 |             |
 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  |      v           `-|------|-----------------|---------------------.
 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  |     |              |      |             OpenBSD 4.2                 |
 216  |     |              |   NetBSD 4.0           |                       |
 217  | FreeBSD 6.3        |      |                 |                       |
 218  |                    |      |                 |                       |
 219  |                    |      |                 |                       |
 220 FreeBSD 7 -current    |  NetBSD -current  OpenBSD -current             |
 221  |                    |      |                 |                       |
 222  v                    v      v                 v                       v
 223
 224 Time
 225 ----------------
 226
 227 Time tolerance +/- 6 months, depending on which book/article you read; if it
 228 was the announcement in Usenet or if it was available as tape.
 229
 230 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 231         and John Quarterman. The Design and Implementation of
 232         the 4.4BSD Operating System.
 233 [APL] Apple website [http://www.apple.com/macosx/]
 234 [BSDI] Berkeley Software Design, Inc.
 235 [DFB] DragonFlyBSD Project, The.
 236 [DOC] README, COPYRIGHT on tape.
 237 [FBD] FreeBSD Project, The.
 238 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 239         Volume 11, Info 4, April, 1987.
 240 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 241         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 242 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 243         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 244         Distribution UNIX Version 2.9, July, 1983.
 245 [NBD] NetBSD Project, The.
 246 [OBD] OpenBSD Project, The.
 247 [QCU] Salus, Peter H. A quarter century of UNIX.
 248 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 249 [USE] Usenet announcement.
 250 [WRS] Wind River Systems, Inc.
 251 [dmr] Dennis Ritchie, via E-Mail
 252
 253 Multics                 1965
 254 UNIX                    Summer 1969
 255                                 DEC PDP-7
 256 First   Edition         1971-11-03 [QCU]
 257                                 DEC PDP-11/20, Assembler
 258 Second  Edition         1972-06-12 [QCU]
 259                                 10 UNIX installations
 260 Third   Edition         1973-02-xx [QCU]
 261                                 Pipes, 16 installations
 262 Fourth  Edition         1973-11-xx [QCU]
 263                                 rewriting in C effected,
 264                                 above 30 installations
 265 Fifth   Edition         1974-06-xx [QCU]
 266                                 above 50 installations
 267 Sixth   Edition         1975-05-xx [QCU]
 268                                 port to DEC Vax
 269 Seventh Edition         1979-01-xx [QCU]
 270                                 first portable UNIX
 271 Eighth  Edition         1985-02-xx [QCU]
 272                                 VAX 11/750, VAX 11/780 [dmr]
 273                                 descended from 4.1c BSD [dmr]
 274                                 descended from 4.1 BSD [44B]
 275                         scooping-out and replacement of the character-device
 276                         and networking part by the streams mechanism
 277
 278 Ninth   Edition         1986-09-xx [QCU]
 279 Tenth   Edition         1989-10-xx [QCU]
 280
 281 1BSD                    late 1977
 282                         1978-03-09 [QCU]
 283                                 PDP-11, Pascal, ex(1)
 284                                 30 free copies of 1BSD sent out
 285                                 35 tapes sold for 50 USD [QCU]
 286 2BSD                    mid 1978 [QCU]
 287                                 75 2BSD tapes shipped
 288 2.7.9BSD                ?? [SMS]
 289 2.8BSD                  1981-07-xx [KSJ]
 290
 291 2.8.1BSD                1982-01-xx [QCU]
 292                                 set of performance improvements
 293 2.9BSD                  1983-07-xx [KSJ]
 294 2.9.1BSD                1983-11-xx
 295 2.9BSD-Seismo           1985-08-xx [SMS]
 296 2.10BSD                 1987-04-xx [KKK]
 297 2.10.1BSD               1989-01-xx [SMS]
 298 2.11BSD                 1992-02-xx [SMS]
 299 2.11BSD rev #430        1999-12-13 [SMS]
 300
 301 32V                     1978-1[01]-xx [QCU]
 302 3BSD                    late 1979 [QCU]
 303                                 virtual memory, page replacement,
 304                                 demand paging
 305 4.0BSD                  1980-10-xx
 306 4.1BSD                  1981-07-08 [DOC]
 307 4.1aBSD                 1982-04-xx
 308                                 alpha release, 100 sites, networking [44B]
 309 4.1bBSD                         internal release, fast filesystem [44B]
 310 4.1cBSD                 late 1982
 311                                 beta release, IPC [44B]
 312 4.2BSD                  1983-09-xx [QCU]
 313                         1983-08-03 [DOC]
 314 4.3BSD                  1986-06-xx [QCU]
 315                         1986-04-05 [KB], [DOC]
 316 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 317 4.3BSD NET/1            1988-11-xx [QCU]
 318                         1989-01-01 [DOC]
 319 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 320 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 321
 322 BSD/386 ALPHA           1991-12-xx [BSDI]
 323                                 first code released to people outside BSDI
 324 386BSD 0.0              1992-02-xx [DOC]
 325 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 326 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 327 386BSD 0.1              1992-07-28 [DOC]
 328 4.4BSD Alpha            1992-07-07
 329 BSD/386 0.9.3           1992-10-xx [BSDI]
 330                                 first external gamma; G customers
 331 BSD/386 0.9.4           1992-12-xx [BSDI]
 332                                 would have been 1.0 except for request
 333                                 for preliminary injunction
 334 BSD/386 1.0             1993-03-xx [BSDI]
 335                                 injunction denied; first official release
 336 NetBSD 0.8              1993-04-20 [NBD]
 337 4.4BSD                  1993-06-01 [USE]
 338 NetBSD 0.9              1993-08-23 [NBD]
 339 FreeBSD 1.0             1993-11-01 [FBD]
 340 FreeBSD 1.0.2           1993-11-14 [FBD]
 341                                 supersedes 1.0 13 days after release.
 342 BSD/386 1.1             1994-02-xx [BSDI]
 343 4.4BSD Lite             1994-03-01 [USE]
 344 FreeBSD 1.1             1994-05-07 [FBD]
 345 FreeBSD 1.1.5           1994-06-30 [FBD]
 346 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 347                                 supersedes 1.1.5 5 days after release.
 348 NetBSD 1.0              1994-10-26 [NBD]
 349 386BSD 1.0              1994-11-12 [USE]
 350 FreeBSD 2.0             1994-11-23 [FBD]
 351 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 352 FreeBSD 2.0.5           1995-06-10 [FBD]
 353 BSD/OS 2.0.1            1995-06-xx [BSDI]
 354 4.4BSD Lite Release 2   1995-06-xx [44B]
 355                                 the true final distribution from the CSRG
 356 FreeBSD 2.1.0           1995-11-19 [FBD]
 357 NetBSD 1.1              1995-11-26 [NBD]
 358 BSD/OS 2.1              1996-01-xx [BSDI]
 359 FreeBSD 2.1.5           1996-07-14 [FBD]
 360 NetBSD 1.2              1996-10-04 [NBD]
 361 OpenBSD 2.0             1996-10-18 [OBD]
 362 FreeBSD 2.1.6           1996-11-16 [FBD]
 363 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 364 Rhapsody                1997-xx-xx
 365 FreeBSD 2.1.7           1997-02-20 [FBD]
 366 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 367 FreeBSD 2.2.0           1997-03-16 [FBD]
 368 FreeBSD 2.2.1           1997-03-25 [FBD]
 369 FreeBSD 2.2.2           1997-05-16 [FBD]
 370 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 371 OpenBSD 2.1             1997-06-01 [OBD]
 372 FreeBSD 2.2.5           1997-10-22 [FBD]
 373 OpenBSD 2.2             1997-12-01 [OBD]
 374 NetBSD 1.3              1998-01-04 [NBD]
 375 FreeBSD 2.2.6           1998-03-25 [FBD]
 376 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 377 BSD/OS 3.1              1998-03-xx [BSDI]
 378 OpenBSD 2.3             1998-05-19 [OBD]
 379 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 380 FreeBSD 2.2.7           1998-07-22 [FBD]
 381 BSD/OS 4.0              1998-08-xx [BSDI]
 382                                 2-lock MP support, ELF executables
 383 FreeBSD 3.0             1998-10-16 [FBD]
 384                                 FreeBSD-3.0 is a snapshot from -current,
 385                                 while 3.1 and 3.2 are from 3.x-stable which
 386                                 was branched quite some time after 3.0-release
 387 FreeBSD 2.2.8           1998-11-29 [FBD]
 388 OpenBSD 2.4             1998-12-01 [OBD]
 389 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 390 FreeBSD 3.1             1999-02-15 [FBD]
 391 BSD/OS 4.0.1            1999-03-xx [BSDI]
 392 NetBSD 1.4              1999-05-12 [NBD]
 393 FreeBSD 3.2             1999-05-17 [FBD]
 394 OpenBSD 2.5             1999-05-19 [OBD]
 395 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 396 FreeBSD 3.3             1999-09-17 [FBD]
 397 OpenBSD 2.6             1999-12-01 [OBD]
 398 FreeBSD 3.4             1999-12-20 [FBD]
 399 BSD/OS 4.1              1999-12-xx [BSDI]
 400 FreeBSD 4.0             2000-03-13 [FBD]
 401 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 402 OpenBSD 2.7             2000-06-15 [OBD]
 403 FreeBSD 3.5             2000-06-24 [FBD]
 404 FreeBSD 4.1             2000-07-27 [FBD]
 405 FreeBSD 3.5.1           2000-07-28 [FBD]
 406 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 407 FreeBSD 4.2             2000-11-21 [FBD]
 408 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 409 BSD/OS 4.2              2000-11-29 [BSDI]
 410 OpenBSD 2.8             2000-12-01 [OBD]
 411 NetBSD 1.5              2000-12-06 [NBD]
 412 Mac OS X 10.0           2001-03-24 [APL]
 413 FreeBSD 4.3             2001-04-20 [FBD]
 414 OpenBSD 2.9             2001-06-01 [OBD]
 415 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 416 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 417 FreeBSD 4.4             2001-09-18 [FBD]
 418 Mac OS X 10.1           2001-09-29 [APL]
 419 OpenBSD 3.0             2001-12-01 [OBD]
 420 FreeBSD 4.5             2002-01-29 [FBD]
 421 BSD/OS 4.3              2002-03-14 [WRS]
 422 OpenBSD 3.1             2002-05-19 [OBD]
 423 FreeBSD 4.6             2002-06-15 [FBD]
 424 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 425 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 426 Mac OS X 10.2           2002-08-23 [APL]
 427 NetBSD 1.6              2002-09-14 [NBD]
 428 FreeBSD 4.7             2002-10-08 [FBD]
 429 OpenBSD 3.2             2002-11-01 [OBD]
 430 FreeBSD 5.0             2003-01-17 [FBD]
 431                                 FreeBSD 5.0 is a separate branch off of
 432                                 -current, similar to 3.0.
 433 FreeBSD 4.8             2003-04-03 [FBD]
 434 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 435 OpenBSD 3.3             2003-05-01 [OBD]
 436 BSD/OS 5.0              2003-05-?? [WRS]
 437 FreeBSD 5.1             2003-06-09 [FBD]
 438 Mac OS X 10.3           2003-10-24 [APL]
 439 FreeBSD 4.9             2003-10-28 [FBD]
 440 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 441 OpenBSD 3.4             2003-11-01 [OBD]
 442 FreeBSD 5.2             2004-01-12 [FBD]
 443 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 444 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 445 OpenBSD 3.5             2004-04-01 [OBD]
 446 FreeBSD 4.10            2004-05-27 [FBD]
 447 DragonFly 1.0           2004-07-12 [DFB]
 448 OpenBSD 3.6             2004-10-29 [OBD]
 449 FreeBSD 5.3             2004-11-06 [FBD]
 450 NetBSD 2.0              2004-12-09 [NBD]
 451 FreeBSD 4.11            2005-01-25 [FBD]
 452 DragonFly 1.2.0         2005-04-08 [DFB]
 453 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 454 Mac OS X 10.4           2005-04-29 [APL]
 455 FreeBSD 5.4             2005-05-09 [FBD]
 456 OpenBSD 3.7             2005-05-19 [OBD]
 457 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 458 OpenBSD 3.8             2005-11-01 [OBD]
 459 FreeBSD 6.0             2005-11-01 [FBD]
 460 NetBSD 2.1              2005-11-02 [NBD]
 461 NetBSD 3.0              2005-12-23 [NBD]
 462 DragonFly 1.4.0         2006-01-08 [DFB]
 463 OpenBSD 3.9             2006-05-01 [OBD]
 464 FreeBSD 6.1             2006-05-08 [FBD]
 465 FreeBSD 5.5             2006-05-25 [FBD]
 466 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 467 DragonFly 1.6.0         2006-07-24 [DFB]
 468 OpenBSD 4.0             2006-11-01 [OBD]
 469 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 470 NetBSD 3.1              2006-11-04 [NBD]
 471 FreeBSD 6.2             2007-01-15 [FBD]
 472 DragonFly 1.8.0         2007-01-30 [DFB]
 473 OpenBSD 4.1             2007-05-01 [OBD]
 474 DragonFly 1.10.0        2007-08-06 [DFB]
 475 OpenBSD 4.2             2007-11-01 [OBD]
 476 NetBSD 4.0              2007-12-19 [NBD]
 477 FreeBSD 6.3             2008-01-18 [FBD]
 478
 479 Bibliography
 480 ------------------------
 481
 482 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 483 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 484 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 485
 486 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 487 Company, Inc., 1994. ISBN 0-201-54777-5
 488
 489 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 490 Quarterman. The Design and Implementation of the 4.4BSD Operating
 491 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 492
 493 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 494 Implementation of the FreeBSD Operating System.
 495 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 496
 497 Doug McIlroy. Research Unix Reader.
 498
 499 Michael G. Brown. The Role of BSD in the Development of Unix.
 500 Presented to the Tasmanian Unix Special Interest Group of the
 501 Australian Computer Society, Hobart, August 1993.
 502
 503 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 504 URL: http://www.byte.com/art/9410/sec8/art3.htm
 505
 506 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 507 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 508
 509 BSD Release Announcements collection.
 510 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 511
 512 BSD Hypertext Man Pages
 513 URL: http://www.FreeBSD.org/cgi/man.cgi
 514
 515 UNIX history graphing project
 516 URL: http://minnie.tuhs.org/Unix_History/index.html
 517
 518 UNIX history
 519 URL: http://www.levenez.com/unix/
 520
 521 James Howard: The BSD Family Tree
 522 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 523 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 524
 525
 526 Acknowledgments
 527 ---------------
 528
 529 Josh Gilliam for suggestions, bug fixes, and finding very old
 530 original BSD announcements from Usenet or tapes.
 531
 532 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 533
 534 --
 535 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 536 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 537
 538 $FreeBSD$