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  |   FreeBSD 5.4     10.4    | |  |            |                       |
 191  |      |             |      | |  |        OpenBSD 3.7                 |
 192  |      V             |      | | NetBSD 2.0.3  |                       |
 193  |                    |      | |  |            |                       |
 194  *---FreeBSD 6.0      |      | |  v        OpenBSD 3.8                 |
 195  |      |             |      | |               |                       |
 196  |      V             |      |  \              |                       |
 197  |                    |      | NetBSD 2.1      |                       |
 198  |                    |      |                 |                       |
 199  |                    |   NetBSD 3.0           |                       |
 200  |                    |      |                 |                 DragonFly 1.4.0
 201  |                    |      |                 |                       |
 202 FreeBSD 7 -current    |  NetBSD -current  OpenBSD -current             |
 203  |                    |      |                 |                       |
 204  v                    v      v                 v                       v
 205
 206 Time
 207 ----------------
 208
 209 Time tolerance +/- 6 months, depending on which book/article you read; if it
 210 was the announcement in Usenet or if it was available as tape.
 211
 212 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 213         and John Quarterman. The Design and Implementation of
 214         the 4.4BSD Operating System.
 215 [APL] Apple website [http://www.apple.com/macosx/]
 216 [BSDI] Berkeley Software Design, Inc.
 217 [DFB] DragonFlyBSD Project, The.
 218 [DOC] README, COPYRIGHT on tape.
 219 [FBD] FreeBSD Project, The.
 220 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 221         Volume 11, Info 4, April, 1987.
 222 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 223         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 224 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 225         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 226         Distribution UNIX Version 2.9, July, 1983.
 227 [NBD] NetBSD Project, The.
 228 [OBD] OpenBSD Project, The.
 229 [QCU] Salus, Peter H. A quarter century of UNIX.
 230 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 231 [USE] Usenet announcement.
 232 [WRS] Wind River Systems, Inc.
 233 [dmr] Dennis Ritchie, via E-Mail
 234
 235 Multics                 1965
 236 UNIX                    Summer 1969
 237                                 DEC PDP-7
 238 First   Edition         1971-11-03 [QCU]
 239                                 DEC PDP-11/20, Assembler
 240 Second  Edition         1972-06-12 [QCU]
 241                                 10 UNIX installations
 242 Third   Edition         1973-02-xx [QCU]
 243                                 Pipes, 16 installations
 244 Fourth  Edition         1973-11-xx [QCU]
 245                                 rewriting in C effected,
 246                                 above 30 installations
 247 Fifth   Edition         1974-06-xx [QCU]
 248                                 above 50 installations
 249 Sixth   Edition         1975-05-xx [QCU]
 250                                 port to DEC Vax
 251 Seventh Edition         1979-01-xx [QCU]
 252                                 first portable UNIX
 253 Eighth  Edition         1985-02-xx [QCU]
 254                                 VAX 11/750, VAX 11/780 [dmr]
 255                                 descended from 4.1c BSD [dmr]
 256                                 descended from 4.1 BSD [44B]
 257                         scooping-out and replacement of the character-device
 258                         and networking part by the streams mechanism
 259
 260 Ninth   Edition         1986-09-xx [QCU]
 261 Tenth   Edition         1989-10-xx [QCU]
 262
 263 1BSD                    late 1977
 264                         1978-03-09 [QCU]
 265                                 PDP-11, Pascal, ex(1)
 266                                 30 free copies of 1BSD sent out
 267                                 35 tapes sold for 50 USD [QCU]
 268 2BSD                    mid 1978 [QCU]
 269                                 75 2BSD tapes shipped
 270 2.7.9BSD                ?? [SMS]
 271 2.8BSD                  1981-07-xx [KSJ]
 272
 273 2.8.1BSD                1982-01-xx [QCU]
 274                                 set of performance improvements
 275 2.9BSD                  1983-07-xx [KSJ]
 276 2.9.1BSD                1983-11-xx
 277 2.9BSD-Seismo           1985-08-xx [SMS]
 278 2.10BSD                 1987-04-xx [KKK]
 279 2.10.1BSD               1989-01-xx [SMS]
 280 2.11BSD                 1992-02-xx [SMS]
 281 2.11BSD rev #430        1999-12-13 [SMS]
 282
 283 32V                     1978-1[01]-xx [QCU]
 284 3BSD                    late 1979 [QCU]
 285                                 virtual memory, page replacement,
 286                                 demand paging
 287 4.0BSD                  1980-10-xx
 288 4.1BSD                  1981-07-08 [DOC]
 289 4.1aBSD                 1982-04-xx
 290                                 alpha release, 100 sites, networking [44B]
 291 4.1bBSD                         internal release, fast filesystem [44B]
 292 4.1cBSD                 late 1982
 293                                 beta release, IPC [44B]
 294 4.2BSD                  1983-09-xx [QCU]
 295                         1983-08-03 [DOC]
 296 4.3BSD                  1986-06-xx [QCU]
 297                         1986-04-05 [KB], [DOC]
 298 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 299 4.3BSD NET/1            1988-11-xx [QCU]
 300                         1989-01-01 [DOC]
 301 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 302 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 303
 304 BSD/386 ALPHA           1991-12-xx [BSDI]
 305                                 first code released to people outside BSDI
 306 386BSD 0.0              1992-02-xx [DOC]
 307 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 308 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 309 386BSD 0.1              1992-07-28 [DOC]
 310 4.4BSD Alpha            1992-07-07
 311 BSD/386 0.9.3           1992-10-xx [BSDI]
 312                                 first external gamma; G customers
 313 BSD/386 0.9.4           1992-12-xx [BSDI]
 314                                 would have been 1.0 except for request
 315                                 for preliminary injunction
 316 BSD/386 1.0             1993-03-xx [BSDI]
 317                                 injunction denied; first official release
 318 NetBSD 0.8              1993-04-20 [NBD]
 319 4.4BSD                  1993-06-01 [USE]
 320 NetBSD 0.9              1993-08-23 [NBD]
 321 FreeBSD 1.0             1993-11-01 [FBD]
 322 BSD/386 1.1             1994-02-xx [BSDI]
 323 4.4BSD Lite             1994-03-01 [USE]
 324 FreeBSD 1.1             1994-05-07 [FBD]
 325 FreeBSD 1.1.5           1994-06-30 [FBD]
 326 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 327                                 supersedes 1.1.5 5 days after release.
 328 NetBSD 1.0              1994-10-26 [NBD]
 329 386BSD 1.0              1994-11-12 [USE]
 330 FreeBSD 2.0             1994-11-23 [FBD]
 331 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 332 FreeBSD 2.0.5           1995-06-10 [FBD]
 333 BSD/OS 2.0.1            1995-06-xx [BSDI]
 334 4.4BSD Lite Release 2   1995-06-xx [44B]
 335                                 the true final distribution from the CSRG
 336 FreeBSD 2.1.0           1995-11-19 [FBD]
 337 NetBSD 1.1              1995-11-26 [NBD]
 338 BSD/OS 2.1              1996-01-xx [BSDI]
 339 FreeBSD 2.1.5           1996-07-14 [FBD]
 340 NetBSD 1.2              1996-10-04 [NBD]
 341 OpenBSD 2.0             1996-10-18 [OBD]
 342 FreeBSD 2.1.6           1996-11-16 [FBD]
 343 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 344 Rhapsody                1997-xx-xx
 345 FreeBSD 2.1.7           1997-02-20 [FBD]
 346 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 347 FreeBSD 2.2.0           1997-03-16 [FBD]
 348 FreeBSD 2.2.1           1997-03-25 [FBD]
 349 FreeBSD 2.2.2           1997-05-16 [FBD]
 350 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 351 OpenBSD 2.1             1997-06-01 [OBD]
 352 FreeBSD 2.2.5           1997-10-22 [FBD]
 353 OpenBSD 2.2             1997-12-01 [OBD]
 354 NetBSD 1.3              1998-01-04 [NBD]
 355 FreeBSD 2.2.6           1998-03-25 [FBD]
 356 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 357 BSD/OS 3.1              1998-03-xx [BSDI]
 358 OpenBSD 2.3             1998-05-19 [OBD]
 359 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 360 FreeBSD 2.2.7           1998-07-22 [FBD]
 361 BSD/OS 4.0              1998-08-xx [BSDI]
 362                                 2-lock MP support, ELF executables
 363 FreeBSD 3.0             1998-10-16 [FBD]
 364                                 FreeBSD-3.0 is a snapshot from -current,
 365                                 while 3.1 and 3.2 are from 3.x-stable which
 366                                 was branched quite some time after 3.0-release
 367 FreeBSD 2.2.8           1998-11-29 [FBD]
 368 OpenBSD 2.4             1998-12-01 [OBD]
 369 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 370 FreeBSD 3.1             1999-02-15 [FBD]
 371 BSD/OS 4.0.1            1999-03-xx [BSDI]
 372 NetBSD 1.4              1999-05-12 [NBD]
 373 FreeBSD 3.2             1999-05-17 [FBD]
 374 OpenBSD 2.5             1999-05-19 [OBD]
 375 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 376 FreeBSD 3.3             1999-09-17 [FBD]
 377 OpenBSD 2.6             1999-12-01 [OBD]
 378 FreeBSD 3.4             1999-12-20 [FBD]
 379 BSD/OS 4.1              1999-12-xx [BSDI]
 380 FreeBSD 4.0             2000-03-13 [FBD]
 381 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 382 OpenBSD 2.7             2000-06-15 [OBD]
 383 FreeBSD 3.5             2000-06-24 [FBD]
 384 FreeBSD 4.1             2000-07-27 [FBD]
 385 FreeBSD 3.5.1           2000-07-28 [FBD]
 386 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 387 FreeBSD 4.2             2000-11-21 [FBD]
 388 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 389 BSD/OS 4.2              2000-11-29 [BSDI]
 390 OpenBSD 2.8             2000-12-01 [OBD]
 391 NetBSD 1.5              2000-12-06 [NBD]
 392 Mac OS X 10.0           2001-03-24 [APL]
 393 FreeBSD 4.3             2001-04-20 [FBD]
 394 OpenBSD 2.9             2001-06-01 [OBD]
 395 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 396 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 397 FreeBSD 4.4             2001-09-18 [FBD]
 398 Mac OS X 10.1           2001-09-29 [APL]
 399 OpenBSD 3.0             2001-12-01 [OBD]
 400 FreeBSD 4.5             2002-01-29 [FBD]
 401 BSD/OS 4.3              2002-03-14 [WRS]
 402 OpenBSD 3.1             2002-05-19 [OBD]
 403 FreeBSD 4.6             2002-06-15 [FBD]
 404 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 405 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 406 Mac OS X 10.2           2002-08-23 [APL]
 407 NetBSD 1.6              2002-09-14 [NBD]
 408 FreeBSD 4.7             2002-10-08 [FBD]
 409 OpenBSD 3.2             2002-11-01 [OBD]
 410 FreeBSD 5.0             2003-01-17 [FBD]
 411                                 FreeBSD 5.0 is a separate branch off of
 412                                 -current, similar to 3.0.
 413 FreeBSD 4.8             2003-04-03 [FBD]
 414 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 415 OpenBSD 3.3             2003-05-01 [OBD]
 416 BSD/OS 5.0              2003-05-?? [WRS]
 417 FreeBSD 5.1             2003-06-09 [FBD]
 418 Mac OS X 10.3           2003-10-24 [APL]
 419 FreeBSD 4.9             2003-10-28 [FBD]
 420 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 421 OpenBSD 3.4             2003-11-01 [OBD]
 422 FreeBSD 5.2             2004-01-12 [FBD]
 423 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 424 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 425 OpenBSD 3.5             2004-04-01 [OBD]
 426 FreeBSD 4.10            2004-05-27 [FBD]
 427 DragonFly 1.0           2004-07-12 [DFB]
 428 OpenBSD 3.6             2004-10-29 [OBD]
 429 FreeBSD 5.3             2004-11-06 [FBD]
 430 NetBSD 2.0              2004-12-09 [NBD]
 431 FreeBSD 4.11            2005-01-25 [FBD]
 432 DragonFly 1.2.0         2005-04-08 [DFB]
 433 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 434 Mac OS X 10.4           2005-04-29 [APL]
 435 FreeBSD 5.4             2005-05-09 [FBD]
 436 OpenBSD 3.7             2005-05-19 [OBD]
 437 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 438 OpenBSD 3.8             2005-11-01 [OBD]
 439 FreeBSD 6.0             2005-11-01 [FBD]
 440 NetBSD 2.1              2005-11-02 [NBD]
 441 NetBSD 3.0              2005-12-23 [NBD]
 442 DragonFly 1.4.0         2006-01-08 [DFB]
 443
 444 Bibliography
 445 ------------------------
 446
 447 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 448 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 449 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 450
 451 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 452 Company, Inc., 1994. ISBN 0-201-54777-5
 453
 454 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 455 Quarterman. The Design and Implementation of the 4.4BSD Operating
 456 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 457
 458 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 459 Implementation of the FreeBSD Operating System.
 460 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 461
 462 Doug McIlroy. Research Unix Reader.
 463
 464 Michael G. Brown. The Role of BSD in the Development of Unix.
 465 Presented to the Tasmanian Unix Special Interest Group of the
 466 Australian Computer Society, Hobart, August 1993.
 467
 468 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 469 URL: http://www.byte.com/art/9410/sec8/art3.htm
 470
 471 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 472 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 473
 474 BSD Release Announcements collection.
 475 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 476
 477 BSD Hypertext Man Pages
 478 URL: http://www.FreeBSD.org/cgi/man.cgi
 479
 480 UNIX history graphing project
 481 URL: http://minnie.tuhs.org/Unix_History/index.html
 482
 483 UNIX history
 484 URL: http://www.levenez.com/unix/
 485
 486 James Howard: The BSD Family Tree
 487 URL: http://www.daemonnews.org/200104/bsd_family.html
 488 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 489
 490
 491 Acknowledgments
 492 ---------------
 493
 494 Josh Gilliam for suggestions, bug fixes, and finding very old
 495 original BSD announcements from Usenet or tapes.
 496
 497 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 498
 499 --
 500 Copyright (c) 1997-2004 Wolfram Schneider <wosch@FreeBSD.ORG>
 501 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 502
 503 $FreeBSD: src/share/misc/bsd-family-tree,v 1.100 2006/01/08 20:23:35 maxim Exp $
 504 $DragonFly: src/share/misc/bsd-family-tree,v 1.7 2006/01/23 02:56:43 swildner Exp $