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 | Mac OS X | | | 251 | 10.7 | | | 252 | | | OpenBSD 5.0 | 253 +--FreeBSD | | | | 254 | 9.0 | | | | 255 | v | | | | 256 | | | | | 257FreeBSD 10 -current | NetBSD -current OpenBSD -current | 258 | | | | | 259 v v v v v 260 261Time 262---------------- 263 264Time tolerance +/- 6 months, depending on which book/article you read; if it 265was the announcement in Usenet or if it was available as tape. 266 267[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 268 and John Quarterman. The Design and Implementation of 269 the 4.4BSD Operating System. 270[APL] Apple website [http://www.apple.com/macosx/] 271[BSDI] Berkeley Software Design, Inc. 272[DFB] DragonFlyBSD Project, The. 273[DOC] README, COPYRIGHT on tape. 274[FBD] FreeBSD Project, The. 275[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 276 Volume 11, Info 4, April, 1987. 277[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 278 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 279[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 280 Changes in the Kernel in 2.9BSD. Second Berkeley Software 281 Distribution UNIX Version 2.9, July, 1983. 282[NBD] NetBSD Project, The. 283[OBD] OpenBSD Project, The. 284[QCU] Salus, Peter H. A quarter century of UNIX. 285[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 286[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 287[USE] Usenet announcement. 288[WRS] Wind River Systems, Inc. 289[dmr] Dennis Ritchie, via E-Mail 290 291Multics 1965 292UNIX Summer 1969 293 DEC PDP-7 294First Edition 1971-11-03 [QCU] 295 DEC PDP-11/20, Assembler 296Second Edition 1972-06-12 [QCU] 297 10 UNIX installations 298Third Edition 1973-02-xx [QCU] 299 Pipes, 16 installations 300Fourth Edition 1973-11-xx [QCU] 301 rewriting in C effected, 302 above 30 installations 303Fifth Edition 1974-06-xx [QCU] 304 above 50 installations 305Sixth Edition 1975-05-xx [QCU] 306 port to DEC Vax 307Seventh Edition 1979-01-xx [QCU] 308 first portable UNIX 309Eighth Edition 1985-02-xx [QCU] 310 VAX 11/750, VAX 11/780 [dmr] 311 descended from 4.1c BSD [dmr] 312 descended from 4.1 BSD [44B] 313 scooping-out and replacement of the character-device 314 and networking part by the streams mechanism 315 316Ninth Edition 1986-09-xx [QCU] 317Tenth Edition 1989-10-xx [QCU] 318 3191BSD late 1977 320 1978-03-09 [QCU] 321 PDP-11, Pascal, ex(1) 322 30 free copies of 1BSD sent out 323 35 tapes sold for 50 USD [QCU] 3242BSD mid 1978 [QCU] 1979-05-10 [TUHS] 325 75 2BSD tapes shipped 3262.79BSD 1980-04-xx [TUHS] 3272.8BSD 1981-07-xx [KSJ] 328 3292.8.1BSD 1982-01-xx [QCU] 330 set of performance improvements 3312.9BSD 1983-07-xx [KSJ] 3322.9.1BSD 1983-11-xx [TUHS] 3332.9BSD-Seismo 1985-08-xx [SMS] 3342.10BSD 1987-04-xx [KKK] 3352.10.1BSD 1989-01-xx [SMS] 3362.11BSD 1992-02-xx [SMS] 3372.11BSD rev #430 1999-12-13 [SMS] 338 33932V 1978-1[01]-xx [QCU] 3403BSD late 1979 [QCU] March 1980 [TUHS] 341 virtual memory, page replacement, 342 demand paging 3434.0BSD 1980-10-xx 3444.1BSD 1981-07-08 [DOC] 3454.1aBSD 1982-04-xx 346 alpha release, 100 sites, networking [44B] 3474.1bBSD internal release, fast filesystem [44B] 3484.1cBSD late 1982 349 beta release, IPC [44B] 3504.2BSD 1983-09-xx [QCU] 351 1983-08-03 [DOC] 3524.3BSD 1986-06-xx [QCU] 353 1986-04-05 [KB], [DOC] 3544.3BSD Tahoe 1988-06-15 [QCU], [DOC] 3554.3BSD NET/1 1988-11-xx [QCU] 356 1989-01-01 [DOC] 3574.3BSD Reno 1990-06-29 [QCU], [DOC] 3584.3BSD NET/2 1991-06-28 [QCU], [DOC] 359 360BSD/386 ALPHA 1991-12-xx [BSDI] 361 first code released to people outside BSDI 362386BSD 0.0 1992-02-xx [DOC] 363BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 364BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 365386BSD 0.1 1992-07-28 [DOC] 3664.4BSD Alpha 1992-07-07 367BSD/386 0.9.3 1992-10-xx [BSDI] 368 first external gamma; G customers 369BSD/386 0.9.4 1992-12-xx [BSDI] 370 would have been 1.0 except for request 371 for preliminary injunction 372BSD/386 1.0 1993-03-xx [BSDI] 373 injunction denied; first official release 374NetBSD 0.8 1993-04-20 [NBD] 3754.4BSD 1993-06-01 [USE] 376NetBSD 0.9 1993-08-23 [NBD] 377FreeBSD 1.0 1993-11-01 [FBD] 378FreeBSD 1.0.2 1993-11-14 [FBD] 379 supersedes 1.0 13 days after release. 380BSD/386 1.1 1994-02-xx [BSDI] 3814.4BSD Lite 1994-03-01 [USE] 382FreeBSD 1.1 1994-05-07 [FBD] 383FreeBSD 1.1.5 1994-06-30 [FBD] 384FreeBSD 1.1.5.1 1994-07-05 [FBD] 385 supersedes 1.1.5 5 days after release. 386NetBSD 1.0 1994-10-26 [NBD] 387386BSD 1.0 1994-11-12 [USE] 388FreeBSD 2.0 1994-11-23 [FBD] 389BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 390FreeBSD 2.0.5 1995-06-10 [FBD] 391BSD/OS 2.0.1 1995-06-xx [BSDI] 3924.4BSD Lite Release 2 1995-06-xx [44B] 393 the true final distribution from the CSRG 394FreeBSD 2.1.0 1995-11-19 [FBD] 395NetBSD 1.1 1995-11-26 [NBD] 396BSD/OS 2.1 1996-01-xx [BSDI] 397FreeBSD 2.1.5 1996-07-14 [FBD] 398NetBSD 1.2 1996-10-04 [NBD] 399OpenBSD 2.0 1996-10-18 [OBD] 400FreeBSD 2.1.6 1996-11-16 [FBD] 401FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 402Rhapsody 1997-xx-xx 403FreeBSD 2.1.7 1997-02-20 [FBD] 404BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 405FreeBSD 2.2.0 1997-03-16 [FBD] 406FreeBSD 2.2.1 1997-03-25 [FBD] 407FreeBSD 2.2.2 1997-05-16 [FBD] 408NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 409OpenBSD 2.1 1997-06-01 [OBD] 410FreeBSD 2.2.5 1997-10-22 [FBD] 411OpenBSD 2.2 1997-12-01 [OBD] 412NetBSD 1.3 1998-01-04 [NBD] 413FreeBSD 2.2.6 1998-03-25 [FBD] 414NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 415BSD/OS 3.1 1998-03-xx [BSDI] 416OpenBSD 2.3 1998-05-19 [OBD] 417NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 418FreeBSD 2.2.7 1998-07-22 [FBD] 419BSD/OS 4.0 1998-08-xx [BSDI] 420 2-lock MP support, ELF executables 421FreeBSD 3.0 1998-10-16 [FBD] 422 FreeBSD-3.0 is a snapshot from -current, 423 while 3.1 and 3.2 are from 3.x-stable which 424 was branched quite some time after 3.0-release 425FreeBSD 2.2.8 1998-11-29 [FBD] 426OpenBSD 2.4 1998-12-01 [OBD] 427NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 428FreeBSD 3.1 1999-02-15 [FBD] 429BSD/OS 4.0.1 1999-03-xx [BSDI] 430NetBSD 1.4 1999-05-12 [NBD] 431FreeBSD 3.2 1999-05-17 [FBD] 432OpenBSD 2.5 1999-05-19 [OBD] 433NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 434FreeBSD 3.3 1999-09-17 [FBD] 435OpenBSD 2.6 1999-12-01 [OBD] 436FreeBSD 3.4 1999-12-20 [FBD] 437BSD/OS 4.1 1999-12-xx [BSDI] 438FreeBSD 4.0 2000-03-13 [FBD] 439NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 440OpenBSD 2.7 2000-06-15 [OBD] 441FreeBSD 3.5 2000-06-24 [FBD] 442FreeBSD 4.1 2000-07-27 [FBD] 443FreeBSD 3.5.1 2000-07-28 [FBD] 444FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 445FreeBSD 4.2 2000-11-21 [FBD] 446NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 447BSD/OS 4.2 2000-11-29 [BSDI] 448OpenBSD 2.8 2000-12-01 [OBD] 449NetBSD 1.5 2000-12-06 [NBD] 450Mac OS X 10.0 2001-03-24 [APL] 451FreeBSD 4.3 2001-04-20 [FBD] 452OpenBSD 2.9 2001-06-01 [OBD] 453NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 454NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 455FreeBSD 4.4 2001-09-18 [FBD] 456Mac OS X 10.1 2001-09-29 [APL] 457OpenBSD 3.0 2001-12-01 [OBD] 458FreeBSD 4.5 2002-01-29 [FBD] 459BSD/OS 4.3 2002-03-14 [WRS] 460OpenBSD 3.1 2002-05-19 [OBD] 461FreeBSD 4.6 2002-06-15 [FBD] 462NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 463FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 464Mac OS X 10.2 2002-08-23 [APL] 465NetBSD 1.6 2002-09-14 [NBD] 466FreeBSD 4.7 2002-10-08 [FBD] 467OpenBSD 3.2 2002-11-01 [OBD] 468FreeBSD 5.0 2003-01-17 [FBD] 469 FreeBSD 5.0 is a separate branch off of 470 -current, similar to 3.0. 471FreeBSD 4.8 2003-04-03 [FBD] 472NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 473OpenBSD 3.3 2003-05-01 [OBD] 474BSD/OS 5.0 2003-05-?? [WRS] 475FreeBSD 5.1 2003-06-09 [FBD] 476Mac OS X 10.3 2003-10-24 [APL] 477FreeBSD 4.9 2003-10-28 [FBD] 478BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 479OpenBSD 3.4 2003-11-01 [OBD] 480FreeBSD 5.2 2004-01-12 [FBD] 481FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 482NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 483OpenBSD 3.5 2004-04-01 [OBD] 484FreeBSD 4.10 2004-05-27 [FBD] 485DragonFly 1.0 2004-07-12 [DFB] 486OpenBSD 3.6 2004-10-29 [OBD] 487FreeBSD 5.3 2004-11-06 [FBD] 488NetBSD 2.0 2004-12-09 [NBD] 489FreeBSD 4.11 2005-01-25 [FBD] 490DragonFly 1.2.0 2005-04-08 [DFB] 491NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 492Mac OS X 10.4 2005-04-29 [APL] 493FreeBSD 5.4 2005-05-09 [FBD] 494OpenBSD 3.7 2005-05-19 [OBD] 495NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 496OpenBSD 3.8 2005-11-01 [OBD] 497FreeBSD 6.0 2005-11-01 [FBD] 498NetBSD 2.1 2005-11-02 [NBD] 499NetBSD 3.0 2005-12-23 [NBD] 500DragonFly 1.4.0 2006-01-08 [DFB] 501OpenBSD 3.9 2006-05-01 [OBD] 502FreeBSD 6.1 2006-05-08 [FBD] 503FreeBSD 5.5 2006-05-25 [FBD] 504NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 505DragonFly 1.6.0 2006-07-24 [DFB] 506OpenBSD 4.0 2006-11-01 [OBD] 507NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 508NetBSD 3.1 2006-11-04 [NBD] 509FreeBSD 6.2 2007-01-15 [FBD] 510DragonFly 1.8.0 2007-01-30 [DFB] 511OpenBSD 4.1 2007-05-01 [OBD] 512DragonFly 1.10.0 2007-08-06 [DFB] 513Mac OS X 10.5 2007-10-26 [APL] 514OpenBSD 4.2 2007-11-01 [OBD] 515NetBSD 4.0 2007-12-19 [NBD] 516FreeBSD 6.3 2008-01-18 [FBD] 517DragonFly 1.12.0 2008-02-26 [DFB] 518FreeBSD 7.0 2008-02-27 [FBD] 519OpenBSD 4.3 2008-05-01 [OBD] 520DragonFly 2.0.0 2008-07-21 [DFB] 521OpenBSD 4.4 2008-11-01 [OBD] 522FreeBSD 6.4 2008-11-28 [FBD] 523FreeBSD 7.1 2009-01-04 [FBD] 524DragonFly 2.2.0 2009-02-17 [DFB] 525NetBSD 5.0 2009-04-29 [NBD] 526OpenBSD 4.5 2009-05-01 [OBD] 527FreeBSD 7.2 2009-05-04 [FBD] 528Mac OS X 10.6 2009-06-08 [APL] 529DragonFly 2.4.0 2009-09-16 [DFB] 530OpenBSD 4.6 2009-10-18 [OBD] 531FreeBSD 8.0 2009-11-26 [FBD] 532FreeBSD 7.3 2010-03-23 [FBD] 533DragonFly 2.6.0 2010-03-28 [DFB] 534OpenBSD 4.7 2010-05-19 [OBD] 535FreeBSD 8.1 2010-07-24 [FBD] 536DragonFly 2.8.2 2010-10-30 [DFB] 537OpenBSD 4.8 2010-11-01 [OBD] 538NetBSD 5.1 2010-11-19 [NBD] 539FreeBSD 7.4 2011-02-24 [FBD] 540FreeBSD 8.2 2011-02-24 [FBD] 541DragonFly 2.10.1 2011-04-26 [DFB] 542OpenBSD 4.9 2011-05-01 [OBD] 543Mac OS X 10.7 2011-07-20 [APL] 544OpenBSD 5.0 2011-11-01 [OBD] 545FreeBSD 9.0 2012-01-12 [FBD] 546 547Bibliography 548------------------------ 549 550Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 551Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 552System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 553 554Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 555Company, Inc., 1994. ISBN 0-201-54777-5 556 557McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 558Quarterman. The Design and Implementation of the 4.4BSD Operating 559System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 560 561McKusick, Marshall Kirk, George Neville-Neil. The Design and 562Implementation of the FreeBSD Operating System. 563Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 564 565Doug McIlroy. Research Unix Reader. 566 567Michael G. Brown. The Role of BSD in the Development of Unix. 568Presented to the Tasmanian Unix Special Interest Group of the 569Australian Computer Society, Hobart, August 1993. 570 571Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 572URL: http://www.byte.com/art/9410/sec8/art3.htm 573 574Andreas Klemm, Lars Köller. If you're going to San Francisco ... 575Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 576 577BSD Release Announcements collection. 578URL: http://www.FreeBSD.org/releases/ 579 580BSD Hypertext Man Pages 581URL: http://www.FreeBSD.org/cgi/man.cgi 582 583UNIX history graphing project 584URL: http://minnie.tuhs.org/Unix_History/index.html 585 586UNIX history 587URL: http://www.levenez.com/unix/ 588 589James Howard: The BSD Family Tree 590URL: http://ezine.daemonnews.org/200104/bsd_family.html 591("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 592 593 594Acknowledgments 595--------------- 596 597Josh Gilliam for suggestions, bug fixes, and finding very old 598original BSD announcements from Usenet or tapes. 599 600Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 601 602-- 603Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 604URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree 605 606$FreeBSD: src/share/misc/bsd-family-tree,v 1.150 2012/01/13 06:18:23 maxim Exp $ 607