1The UNIX system family tree: Research and BSD 2--------------------------------------------- 3 4First Edition (V1) 5 | 6Second Edition (V2) 7 | 8Third Edition (V3) 9 | 10Fourth Edition (V4) 11 | 12Fifth Edition (V5) 13 | 14Sixth Edition (V6) -----* 15 \ | 16 \ | 17 \ | 18Seventh Edition (V7) | 19 \ | 20 \ 1BSD 21 32V | 22 \ 2BSD---------------* 23 \ / | 24 \ / | 25 \/ | 26 3BSD | 27 | | 28 4.0BSD 2.79BSD 29 | | 30 4.1BSD --------------> 2.8BSD 31 | | 32 4.1aBSD -----------\ | 33 | \ | 34 4.1bBSD \ | 35 | \ | 36 *------ 4.1cBSD --------------> 2.9BSD 37 / | | 38Eighth Edition | 2.9BSD-Seismo 39 | | | 40 +----<--- 4.2BSD 2.9.1BSD 41 | | | 42 +----<--- 4.3BSD -------------> 2.10BSD 43 | | / | 44Ninth Edition | / 2.10.1BSD 45 | 4.3BSD Tahoe-----+ | 46 | | \ | 47 | | \ | 48 v | 2.11BSD 49Tenth Edition | | 50 | 2.11BSD rev #430 51 4.3BSD NET/1 | 52 | v 53 4.3BSD Reno 54 | 55 *---------- 4.3BSD NET/2 -------------------+-------------* 56 | | | | 57386BSD 0.0 | | BSD/386 ALPHA 58 | | | | 59386BSD 0.1 ------------>+ | BSD/386 0.3.[13] 60 | \ | 4.4BSD Alpha | 61 | 386BSD 1.0 | | BSD/386 0.9.[34] 62 | | 4.4BSD | 63 | | / | | 64 | | 4.4BSD-Encumbered | | 65 | NetBSD 0.8 | BSD/386 1.0 66 | | | | 67FreeBSD 1.0 NetBSD 0.9 | BSD/386 1.1 68 | | .----- 4.4BSD Lite | 69FreeBSD 1.1 | / / | \ | 70 | | / / | \ | 71FreeBSD 1.1.5 .---|--------' / | \ | 72 | / | / | \ | 73FreeBSD 1.1.5.1 / | / | \ | 74 | / NetBSD 1.0 <-' | \ | 75 | / | | \ | 76FreeBSD 2.0 <--' | | BSD/OS 2.0 77 | \ | | 78FreeBSD 2.0.5 \ | BSD/OS 2.0.1 79 | .-----\------------- 4.4BSD Lite2 | 80 | | \ | | | | | 81 | | .-----|------Rhapsody | | | | 82 | | | | NetBSD 1.3 | | | 83 | | | | OpenBSD 2.3 | | 84 | | | | BSD/OS 3.0 | 85FreeBSD 2.1 | | | | 86 | | | | NetBSD 1.1 ------. BSD/OS 2.1 87 | FreeBSD 2.1.5 | | | \ | 88 | | | | NetBSD 1.2 \ BSD/OS 3.0 89 | FreeBSD 2.1.6 | | | \ OpenBSD 2.0 | 90 | | | | | \ | | 91 | FreeBSD 2.1.6.1 | | | \ | | 92 | | | | | \ | | 93 | FreeBSD 2.1.7 | | | | | | 94 | | | | | NetBSD 1.2.1 | | 95 | FreeBSD 2.1.7.1 | | | | | 96 | | | | | | 97 | | | | | | 98 *-FreeBSD 2.2 | | | | | 99 | \ | | | | | 100 | FreeBSD 2.2.1 | | | | | 101 | | | | | | | 102 | FreeBSD 2.2.2 | | | OpenBSD 2.1 | 103 | | | | | | | 104 | FreeBSD 2.2.5 | | | | | 105 | | | | | OpenBSD 2.2 | 106 | | | | NetBSD 1.3 | | 107 | FreeBSD 2.2.6 | | | | | | 108 | | | | | NetBSD 1.3.1 | BSD/OS 3.1 109 | | | | | | OpenBSD 2.3 | 110 | | | | | NetBSD 1.3.2 | | 111 | FreeBSD 2.2.7 | | | | | | 112 | | | | | | | BSD/OS 4.0 113 | v | | | | | | 114 | FreeBSD 2.2.8 | | | | | | 115 | | | | | OpenBSD 2.4 | 116FreeBSD 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 128FreeBSD 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 | | | | \ 175FreeBSD 5.0 | | | | 176 | | | | | 177FreeBSD 5.1 | | | DragonFly 1.0 178 | \ | | | | 179 | ----- Mac OS X | | | 180 | 10.3 | | | 181FreeBSD 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 | v | | OpenBSD 4.9 | 250 | | | | | 251 | | | | | 252 | | | OpenBSD 5.0 | 253 | | | | | 254FreeBSD 9 -current | NetBSD -current OpenBSD -current | 255 | | | | | 256 v v v v v 257 258Time 259---------------- 260 261Time tolerance +/- 6 months, depending on which book/article you read; if it 262was the announcement in Usenet or if it was available as tape. 263 264[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 265 and John Quarterman. The Design and Implementation of 266 the 4.4BSD Operating System. 267[APL] Apple website [http://www.apple.com/macosx/] 268[BSDI] Berkeley Software Design, Inc. 269[DFB] DragonFlyBSD Project, The. 270[DOC] README, COPYRIGHT on tape. 271[FBD] FreeBSD Project, The. 272[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 273 Volume 11, Info 4, April, 1987. 274[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 275 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 276[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 277 Changes in the Kernel in 2.9BSD. Second Berkeley Software 278 Distribution UNIX Version 2.9, July, 1983. 279[NBD] NetBSD Project, The. 280[OBD] OpenBSD Project, The. 281[QCU] Salus, Peter H. A quarter century of UNIX. 282[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 283[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 284[USE] Usenet announcement. 285[WRS] Wind River Systems, Inc. 286[dmr] Dennis Ritchie, via E-Mail 287 288Multics 1965 289UNIX Summer 1969 290 DEC PDP-7 291First Edition 1971-11-03 [QCU] 292 DEC PDP-11/20, Assembler 293Second Edition 1972-06-12 [QCU] 294 10 UNIX installations 295Third Edition 1973-02-xx [QCU] 296 Pipes, 16 installations 297Fourth Edition 1973-11-xx [QCU] 298 rewriting in C effected, 299 above 30 installations 300Fifth Edition 1974-06-xx [QCU] 301 above 50 installations 302Sixth Edition 1975-05-xx [QCU] 303 port to DEC Vax 304Seventh Edition 1979-01-xx [QCU] 305 first portable UNIX 306Eighth Edition 1985-02-xx [QCU] 307 VAX 11/750, VAX 11/780 [dmr] 308 descended from 4.1c BSD [dmr] 309 descended from 4.1 BSD [44B] 310 scooping-out and replacement of the character-device 311 and networking part by the streams mechanism 312 313Ninth Edition 1986-09-xx [QCU] 314Tenth Edition 1989-10-xx [QCU] 315 3161BSD late 1977 317 1978-03-09 [QCU] 318 PDP-11, Pascal, ex(1) 319 30 free copies of 1BSD sent out 320 35 tapes sold for 50 USD [QCU] 3212BSD mid 1978 [QCU] 1979-05-10 [TUHS] 322 75 2BSD tapes shipped 3232.79BSD 1980-04-xx [TUHS] 3242.8BSD 1981-07-xx [KSJ] 325 3262.8.1BSD 1982-01-xx [QCU] 327 set of performance improvements 3282.9BSD 1983-07-xx [KSJ] 3292.9.1BSD 1983-11-xx [TUHS] 3302.9BSD-Seismo 1985-08-xx [SMS] 3312.10BSD 1987-04-xx [KKK] 3322.10.1BSD 1989-01-xx [SMS] 3332.11BSD 1992-02-xx [SMS] 3342.11BSD rev #430 1999-12-13 [SMS] 335 33632V 1978-1[01]-xx [QCU] 3373BSD late 1979 [QCU] March 1980 [TUHS] 338 virtual memory, page replacement, 339 demand paging 3404.0BSD 1980-10-xx 3414.1BSD 1981-07-08 [DOC] 3424.1aBSD 1982-04-xx 343 alpha release, 100 sites, networking [44B] 3444.1bBSD internal release, fast filesystem [44B] 3454.1cBSD late 1982 346 beta release, IPC [44B] 3474.2BSD 1983-09-xx [QCU] 348 1983-08-03 [DOC] 3494.3BSD 1986-06-xx [QCU] 350 1986-04-05 [KB], [DOC] 3514.3BSD Tahoe 1988-06-15 [QCU], [DOC] 3524.3BSD NET/1 1988-11-xx [QCU] 353 1989-01-01 [DOC] 3544.3BSD Reno 1990-06-29 [QCU], [DOC] 3554.3BSD NET/2 1991-06-28 [QCU], [DOC] 356 357BSD/386 ALPHA 1991-12-xx [BSDI] 358 first code released to people outside BSDI 359386BSD 0.0 1992-02-xx [DOC] 360BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 361BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 362386BSD 0.1 1992-07-28 [DOC] 3634.4BSD Alpha 1992-07-07 364BSD/386 0.9.3 1992-10-xx [BSDI] 365 first external gamma; G customers 366BSD/386 0.9.4 1992-12-xx [BSDI] 367 would have been 1.0 except for request 368 for preliminary injunction 369BSD/386 1.0 1993-03-xx [BSDI] 370 injunction denied; first official release 371NetBSD 0.8 1993-04-20 [NBD] 3724.4BSD 1993-06-01 [USE] 373NetBSD 0.9 1993-08-23 [NBD] 374FreeBSD 1.0 1993-11-01 [FBD] 375FreeBSD 1.0.2 1993-11-14 [FBD] 376 supersedes 1.0 13 days after release. 377BSD/386 1.1 1994-02-xx [BSDI] 3784.4BSD Lite 1994-03-01 [USE] 379FreeBSD 1.1 1994-05-07 [FBD] 380FreeBSD 1.1.5 1994-06-30 [FBD] 381FreeBSD 1.1.5.1 1994-07-05 [FBD] 382 supersedes 1.1.5 5 days after release. 383NetBSD 1.0 1994-10-26 [NBD] 384386BSD 1.0 1994-11-12 [USE] 385FreeBSD 2.0 1994-11-23 [FBD] 386BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 387FreeBSD 2.0.5 1995-06-10 [FBD] 388BSD/OS 2.0.1 1995-06-xx [BSDI] 3894.4BSD Lite Release 2 1995-06-xx [44B] 390 the true final distribution from the CSRG 391FreeBSD 2.1.0 1995-11-19 [FBD] 392NetBSD 1.1 1995-11-26 [NBD] 393BSD/OS 2.1 1996-01-xx [BSDI] 394FreeBSD 2.1.5 1996-07-14 [FBD] 395NetBSD 1.2 1996-10-04 [NBD] 396OpenBSD 2.0 1996-10-18 [OBD] 397FreeBSD 2.1.6 1996-11-16 [FBD] 398FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 399Rhapsody 1997-xx-xx 400FreeBSD 2.1.7 1997-02-20 [FBD] 401BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 402FreeBSD 2.2.0 1997-03-16 [FBD] 403FreeBSD 2.2.1 1997-03-25 [FBD] 404FreeBSD 2.2.2 1997-05-16 [FBD] 405NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 406OpenBSD 2.1 1997-06-01 [OBD] 407FreeBSD 2.2.5 1997-10-22 [FBD] 408OpenBSD 2.2 1997-12-01 [OBD] 409NetBSD 1.3 1998-01-04 [NBD] 410FreeBSD 2.2.6 1998-03-25 [FBD] 411NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 412BSD/OS 3.1 1998-03-xx [BSDI] 413OpenBSD 2.3 1998-05-19 [OBD] 414NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 415FreeBSD 2.2.7 1998-07-22 [FBD] 416BSD/OS 4.0 1998-08-xx [BSDI] 417 2-lock MP support, ELF executables 418FreeBSD 3.0 1998-10-16 [FBD] 419 FreeBSD-3.0 is a snapshot from -current, 420 while 3.1 and 3.2 are from 3.x-stable which 421 was branched quite some time after 3.0-release 422FreeBSD 2.2.8 1998-11-29 [FBD] 423OpenBSD 2.4 1998-12-01 [OBD] 424NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 425FreeBSD 3.1 1999-02-15 [FBD] 426BSD/OS 4.0.1 1999-03-xx [BSDI] 427NetBSD 1.4 1999-05-12 [NBD] 428FreeBSD 3.2 1999-05-17 [FBD] 429OpenBSD 2.5 1999-05-19 [OBD] 430NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 431FreeBSD 3.3 1999-09-17 [FBD] 432OpenBSD 2.6 1999-12-01 [OBD] 433FreeBSD 3.4 1999-12-20 [FBD] 434BSD/OS 4.1 1999-12-xx [BSDI] 435FreeBSD 4.0 2000-03-13 [FBD] 436NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 437OpenBSD 2.7 2000-06-15 [OBD] 438FreeBSD 3.5 2000-06-24 [FBD] 439FreeBSD 4.1 2000-07-27 [FBD] 440FreeBSD 3.5.1 2000-07-28 [FBD] 441FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 442FreeBSD 4.2 2000-11-21 [FBD] 443NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 444BSD/OS 4.2 2000-11-29 [BSDI] 445OpenBSD 2.8 2000-12-01 [OBD] 446NetBSD 1.5 2000-12-06 [NBD] 447Mac OS X 10.0 2001-03-24 [APL] 448FreeBSD 4.3 2001-04-20 [FBD] 449OpenBSD 2.9 2001-06-01 [OBD] 450NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 451NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 452FreeBSD 4.4 2001-09-18 [FBD] 453Mac OS X 10.1 2001-09-29 [APL] 454OpenBSD 3.0 2001-12-01 [OBD] 455FreeBSD 4.5 2002-01-29 [FBD] 456BSD/OS 4.3 2002-03-14 [WRS] 457OpenBSD 3.1 2002-05-19 [OBD] 458FreeBSD 4.6 2002-06-15 [FBD] 459NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 460FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 461Mac OS X 10.2 2002-08-23 [APL] 462NetBSD 1.6 2002-09-14 [NBD] 463FreeBSD 4.7 2002-10-08 [FBD] 464OpenBSD 3.2 2002-11-01 [OBD] 465FreeBSD 5.0 2003-01-17 [FBD] 466 FreeBSD 5.0 is a separate branch off of 467 -current, similar to 3.0. 468FreeBSD 4.8 2003-04-03 [FBD] 469NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 470OpenBSD 3.3 2003-05-01 [OBD] 471BSD/OS 5.0 2003-05-?? [WRS] 472FreeBSD 5.1 2003-06-09 [FBD] 473Mac OS X 10.3 2003-10-24 [APL] 474FreeBSD 4.9 2003-10-28 [FBD] 475BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 476OpenBSD 3.4 2003-11-01 [OBD] 477FreeBSD 5.2 2004-01-12 [FBD] 478FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 479NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 480OpenBSD 3.5 2004-04-01 [OBD] 481FreeBSD 4.10 2004-05-27 [FBD] 482DragonFly 1.0 2004-07-12 [DFB] 483OpenBSD 3.6 2004-10-29 [OBD] 484FreeBSD 5.3 2004-11-06 [FBD] 485NetBSD 2.0 2004-12-09 [NBD] 486FreeBSD 4.11 2005-01-25 [FBD] 487DragonFly 1.2.0 2005-04-08 [DFB] 488NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 489Mac OS X 10.4 2005-04-29 [APL] 490FreeBSD 5.4 2005-05-09 [FBD] 491OpenBSD 3.7 2005-05-19 [OBD] 492NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 493OpenBSD 3.8 2005-11-01 [OBD] 494FreeBSD 6.0 2005-11-01 [FBD] 495NetBSD 2.1 2005-11-02 [NBD] 496NetBSD 3.0 2005-12-23 [NBD] 497DragonFly 1.4.0 2006-01-08 [DFB] 498OpenBSD 3.9 2006-05-01 [OBD] 499FreeBSD 6.1 2006-05-08 [FBD] 500FreeBSD 5.5 2006-05-25 [FBD] 501NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 502DragonFly 1.6.0 2006-07-24 [DFB] 503OpenBSD 4.0 2006-11-01 [OBD] 504NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 505NetBSD 3.1 2006-11-04 [NBD] 506FreeBSD 6.2 2007-01-15 [FBD] 507DragonFly 1.8.0 2007-01-30 [DFB] 508OpenBSD 4.1 2007-05-01 [OBD] 509DragonFly 1.10.0 2007-08-06 [DFB] 510Mac OS X 10.5 2007-10-26 [APL] 511OpenBSD 4.2 2007-11-01 [OBD] 512NetBSD 4.0 2007-12-19 [NBD] 513FreeBSD 6.3 2008-01-18 [FBD] 514DragonFly 1.12.0 2008-02-26 [DFB] 515FreeBSD 7.0 2008-02-27 [FBD] 516OpenBSD 4.3 2008-05-01 [OBD] 517DragonFly 2.0.0 2008-07-21 [DFB] 518OpenBSD 4.4 2008-11-01 [OBD] 519FreeBSD 6.4 2008-11-28 [FBD] 520FreeBSD 7.1 2009-01-04 [FBD] 521DragonFly 2.2.0 2009-02-17 [DFB] 522NetBSD 5.0 2009-04-29 [NBD] 523OpenBSD 4.5 2009-05-01 [OBD] 524FreeBSD 7.2 2009-05-04 [FBD] 525Mac OS X 10.6 2009-06-08 [APL] 526DragonFly 2.4.0 2009-09-16 [DFB] 527OpenBSD 4.6 2009-10-18 [OBD] 528FreeBSD 8.0 2009-11-26 [FBD] 529FreeBSD 7.3 2010-03-23 [FBD] 530DragonFly 2.6.0 2010-03-28 [DFB] 531OpenBSD 4.7 2010-05-19 [OBD] 532FreeBSD 8.1 2010-07-24 [FBD] 533DragonFly 2.8.2 2010-10-30 [DFB] 534OpenBSD 4.8 2010-11-01 [OBD] 535NetBSD 5.1 2010-11-19 [NBD] 536FreeBSD 7.4 2011-02-24 [FBD] 537FreeBSD 8.2 2011-02-24 [FBD] 538DragonFly 2.10.1 2011-04-26 [DFB] 539OpenBSD 4.9 2011-05-01 [OBD] 540OpenBSD 5.0 2011-11-01 [OBD] 541 542Bibliography 543------------------------ 544 545Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 546Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 547System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 548 549Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 550Company, Inc., 1994. ISBN 0-201-54777-5 551 552McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 553Quarterman. The Design and Implementation of the 4.4BSD Operating 554System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 555 556McKusick, Marshall Kirk, George Neville-Neil. The Design and 557Implementation of the FreeBSD Operating System. 558Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 559 560Doug McIlroy. Research Unix Reader. 561 562Michael G. Brown. The Role of BSD in the Development of Unix. 563Presented to the Tasmanian Unix Special Interest Group of the 564Australian Computer Society, Hobart, August 1993. 565 566Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 567URL: http://www.byte.com/art/9410/sec8/art3.htm 568 569Andreas Klemm, Lars Köller. If you're going to San Francisco ... 570Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 571 572BSD Release Announcements collection. 573URL: http://www.FreeBSD.org/releases/ 574 575BSD Hypertext Man Pages 576URL: http://www.FreeBSD.org/cgi/man.cgi 577 578UNIX history graphing project 579URL: http://minnie.tuhs.org/Unix_History/index.html 580 581UNIX history 582URL: http://www.levenez.com/unix/ 583 584James Howard: The BSD Family Tree 585URL: http://ezine.daemonnews.org/200104/bsd_family.html 586("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 587 588 589Acknowledgments 590--------------- 591 592Josh Gilliam for suggestions, bug fixes, and finding very old 593original BSD announcements from Usenet or tapes. 594 595Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 596 597-- 598Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG> 599URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree 600 601$FreeBSD: src/share/misc/bsd-family-tree,v 1.148 2011/11/02 14:28:36 maxim Exp $ 602