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 | | | | | DragonFly 2.4.0 233 | | | | OpenBSD 4.6 | 234 | | | | | | 235 *--FreeBSD | | | | | 236 | 8.0 | | | | | 237 | | FreeBSD | | | | 238 | | 7.3 | | | DragonFly 2.6.0 239 | | | | OpenBSD 4.7 | 240 | FreeBSD | | | | 241 | 8.1 | | | | 242 | | | | | | 243 | V | | | | 244 | | | | | 245FreeBSD 9 -current | NetBSD -current OpenBSD -current | 246 | | | | | 247 v v v v v 248 249Time 250---------------- 251 252Time tolerance +/- 6 months, depending on which book/article you read; if it 253was the announcement in Usenet or if it was available as tape. 254 255[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 256 and John Quarterman. The Design and Implementation of 257 the 4.4BSD Operating System. 258[APL] Apple website [http://www.apple.com/macosx/] 259[BSDI] Berkeley Software Design, Inc. 260[DFB] DragonFlyBSD Project, The. 261[DOC] README, COPYRIGHT on tape. 262[FBD] FreeBSD Project, The. 263[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 264 Volume 11, Info 4, April, 1987. 265[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 266 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 267[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 268 Changes in the Kernel in 2.9BSD. Second Berkeley Software 269 Distribution UNIX Version 2.9, July, 1983. 270[NBD] NetBSD Project, The. 271[OBD] OpenBSD Project, The. 272[QCU] Salus, Peter H. A quarter century of UNIX. 273[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 274[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 275[USE] Usenet announcement. 276[WRS] Wind River Systems, Inc. 277[dmr] Dennis Ritchie, via E-Mail 278 279Multics 1965 280UNIX Summer 1969 281 DEC PDP-7 282First Edition 1971-11-03 [QCU] 283 DEC PDP-11/20, Assembler 284Second Edition 1972-06-12 [QCU] 285 10 UNIX installations 286Third Edition 1973-02-xx [QCU] 287 Pipes, 16 installations 288Fourth Edition 1973-11-xx [QCU] 289 rewriting in C effected, 290 above 30 installations 291Fifth Edition 1974-06-xx [QCU] 292 above 50 installations 293Sixth Edition 1975-05-xx [QCU] 294 port to DEC Vax 295Seventh Edition 1979-01-xx [QCU] 296 first portable UNIX 297Eighth Edition 1985-02-xx [QCU] 298 VAX 11/750, VAX 11/780 [dmr] 299 descended from 4.1c BSD [dmr] 300 descended from 4.1 BSD [44B] 301 scooping-out and replacement of the character-device 302 and networking part by the streams mechanism 303 304Ninth Edition 1986-09-xx [QCU] 305Tenth Edition 1989-10-xx [QCU] 306 3071BSD late 1977 308 1978-03-09 [QCU] 309 PDP-11, Pascal, ex(1) 310 30 free copies of 1BSD sent out 311 35 tapes sold for 50 USD [QCU] 3122BSD mid 1978 [QCU] 1979-05-10 [TUHS] 313 75 2BSD tapes shipped 3142.79BSD 1980-04-xx [TUHS] 3152.8BSD 1981-07-xx [KSJ] 316 3172.8.1BSD 1982-01-xx [QCU] 318 set of performance improvements 3192.9BSD 1983-07-xx [KSJ] 3202.9.1BSD 1983-11-xx [TUHS] 3212.9BSD-Seismo 1985-08-xx [SMS] 3222.10BSD 1987-04-xx [KKK] 3232.10.1BSD 1989-01-xx [SMS] 3242.11BSD 1992-02-xx [SMS] 3252.11BSD rev #430 1999-12-13 [SMS] 326 32732V 1978-1[01]-xx [QCU] 3283BSD late 1979 [QCU] March 1980 [TUHS] 329 virtual memory, page replacement, 330 demand paging 3314.0BSD 1980-10-xx 3324.1BSD 1981-07-08 [DOC] 3334.1aBSD 1982-04-xx 334 alpha release, 100 sites, networking [44B] 3354.1bBSD internal release, fast filesystem [44B] 3364.1cBSD late 1982 337 beta release, IPC [44B] 3384.2BSD 1983-09-xx [QCU] 339 1983-08-03 [DOC] 3404.3BSD 1986-06-xx [QCU] 341 1986-04-05 [KB], [DOC] 3424.3BSD Tahoe 1988-06-15 [QCU], [DOC] 3434.3BSD NET/1 1988-11-xx [QCU] 344 1989-01-01 [DOC] 3454.3BSD Reno 1990-06-29 [QCU], [DOC] 3464.3BSD NET/2 1991-06-28 [QCU], [DOC] 347 348BSD/386 ALPHA 1991-12-xx [BSDI] 349 first code released to people outside BSDI 350386BSD 0.0 1992-02-xx [DOC] 351BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 352BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 353386BSD 0.1 1992-07-28 [DOC] 3544.4BSD Alpha 1992-07-07 355BSD/386 0.9.3 1992-10-xx [BSDI] 356 first external gamma; G customers 357BSD/386 0.9.4 1992-12-xx [BSDI] 358 would have been 1.0 except for request 359 for preliminary injunction 360BSD/386 1.0 1993-03-xx [BSDI] 361 injunction denied; first official release 362NetBSD 0.8 1993-04-20 [NBD] 3634.4BSD 1993-06-01 [USE] 364NetBSD 0.9 1993-08-23 [NBD] 365FreeBSD 1.0 1993-11-01 [FBD] 366FreeBSD 1.0.2 1993-11-14 [FBD] 367 supersedes 1.0 13 days after release. 368BSD/386 1.1 1994-02-xx [BSDI] 3694.4BSD Lite 1994-03-01 [USE] 370FreeBSD 1.1 1994-05-07 [FBD] 371FreeBSD 1.1.5 1994-06-30 [FBD] 372FreeBSD 1.1.5.1 1994-07-05 [FBD] 373 supersedes 1.1.5 5 days after release. 374NetBSD 1.0 1994-10-26 [NBD] 375386BSD 1.0 1994-11-12 [USE] 376FreeBSD 2.0 1994-11-23 [FBD] 377BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 378FreeBSD 2.0.5 1995-06-10 [FBD] 379BSD/OS 2.0.1 1995-06-xx [BSDI] 3804.4BSD Lite Release 2 1995-06-xx [44B] 381 the true final distribution from the CSRG 382FreeBSD 2.1.0 1995-11-19 [FBD] 383NetBSD 1.1 1995-11-26 [NBD] 384BSD/OS 2.1 1996-01-xx [BSDI] 385FreeBSD 2.1.5 1996-07-14 [FBD] 386NetBSD 1.2 1996-10-04 [NBD] 387OpenBSD 2.0 1996-10-18 [OBD] 388FreeBSD 2.1.6 1996-11-16 [FBD] 389FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 390Rhapsody 1997-xx-xx 391FreeBSD 2.1.7 1997-02-20 [FBD] 392BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 393FreeBSD 2.2.0 1997-03-16 [FBD] 394FreeBSD 2.2.1 1997-03-25 [FBD] 395FreeBSD 2.2.2 1997-05-16 [FBD] 396NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 397OpenBSD 2.1 1997-06-01 [OBD] 398FreeBSD 2.2.5 1997-10-22 [FBD] 399OpenBSD 2.2 1997-12-01 [OBD] 400NetBSD 1.3 1998-01-04 [NBD] 401FreeBSD 2.2.6 1998-03-25 [FBD] 402NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 403BSD/OS 3.1 1998-03-xx [BSDI] 404OpenBSD 2.3 1998-05-19 [OBD] 405NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 406FreeBSD 2.2.7 1998-07-22 [FBD] 407BSD/OS 4.0 1998-08-xx [BSDI] 408 2-lock MP support, ELF executables 409FreeBSD 3.0 1998-10-16 [FBD] 410 FreeBSD-3.0 is a snapshot from -current, 411 while 3.1 and 3.2 are from 3.x-stable which 412 was branched quite some time after 3.0-release 413FreeBSD 2.2.8 1998-11-29 [FBD] 414OpenBSD 2.4 1998-12-01 [OBD] 415NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 416FreeBSD 3.1 1999-02-15 [FBD] 417BSD/OS 4.0.1 1999-03-xx [BSDI] 418NetBSD 1.4 1999-05-12 [NBD] 419FreeBSD 3.2 1999-05-17 [FBD] 420OpenBSD 2.5 1999-05-19 [OBD] 421NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 422FreeBSD 3.3 1999-09-17 [FBD] 423OpenBSD 2.6 1999-12-01 [OBD] 424FreeBSD 3.4 1999-12-20 [FBD] 425BSD/OS 4.1 1999-12-xx [BSDI] 426FreeBSD 4.0 2000-03-13 [FBD] 427NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 428OpenBSD 2.7 2000-06-15 [OBD] 429FreeBSD 3.5 2000-06-24 [FBD] 430FreeBSD 4.1 2000-07-27 [FBD] 431FreeBSD 3.5.1 2000-07-28 [FBD] 432FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 433FreeBSD 4.2 2000-11-21 [FBD] 434NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 435BSD/OS 4.2 2000-11-29 [BSDI] 436OpenBSD 2.8 2000-12-01 [OBD] 437NetBSD 1.5 2000-12-06 [NBD] 438Mac OS X 10.0 2001-03-24 [APL] 439FreeBSD 4.3 2001-04-20 [FBD] 440OpenBSD 2.9 2001-06-01 [OBD] 441NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 442NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 443FreeBSD 4.4 2001-09-18 [FBD] 444Mac OS X 10.1 2001-09-29 [APL] 445OpenBSD 3.0 2001-12-01 [OBD] 446FreeBSD 4.5 2002-01-29 [FBD] 447BSD/OS 4.3 2002-03-14 [WRS] 448OpenBSD 3.1 2002-05-19 [OBD] 449FreeBSD 4.6 2002-06-15 [FBD] 450NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 451FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 452Mac OS X 10.2 2002-08-23 [APL] 453NetBSD 1.6 2002-09-14 [NBD] 454FreeBSD 4.7 2002-10-08 [FBD] 455OpenBSD 3.2 2002-11-01 [OBD] 456FreeBSD 5.0 2003-01-17 [FBD] 457 FreeBSD 5.0 is a separate branch off of 458 -current, similar to 3.0. 459FreeBSD 4.8 2003-04-03 [FBD] 460NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 461OpenBSD 3.3 2003-05-01 [OBD] 462BSD/OS 5.0 2003-05-?? [WRS] 463FreeBSD 5.1 2003-06-09 [FBD] 464Mac OS X 10.3 2003-10-24 [APL] 465FreeBSD 4.9 2003-10-28 [FBD] 466BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 467OpenBSD 3.4 2003-11-01 [OBD] 468FreeBSD 5.2 2004-01-12 [FBD] 469FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 470NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 471OpenBSD 3.5 2004-04-01 [OBD] 472FreeBSD 4.10 2004-05-27 [FBD] 473DragonFly 1.0 2004-07-12 [DFB] 474OpenBSD 3.6 2004-10-29 [OBD] 475FreeBSD 5.3 2004-11-06 [FBD] 476NetBSD 2.0 2004-12-09 [NBD] 477FreeBSD 4.11 2005-01-25 [FBD] 478DragonFly 1.2.0 2005-04-08 [DFB] 479NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 480Mac OS X 10.4 2005-04-29 [APL] 481FreeBSD 5.4 2005-05-09 [FBD] 482OpenBSD 3.7 2005-05-19 [OBD] 483NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 484OpenBSD 3.8 2005-11-01 [OBD] 485FreeBSD 6.0 2005-11-01 [FBD] 486NetBSD 2.1 2005-11-02 [NBD] 487NetBSD 3.0 2005-12-23 [NBD] 488DragonFly 1.4.0 2006-01-08 [DFB] 489OpenBSD 3.9 2006-05-01 [OBD] 490FreeBSD 6.1 2006-05-08 [FBD] 491FreeBSD 5.5 2006-05-25 [FBD] 492NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 493DragonFly 1.6.0 2006-07-24 [DFB] 494OpenBSD 4.0 2006-11-01 [OBD] 495NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 496NetBSD 3.1 2006-11-04 [NBD] 497FreeBSD 6.2 2007-01-15 [FBD] 498DragonFly 1.8.0 2007-01-30 [DFB] 499OpenBSD 4.1 2007-05-01 [OBD] 500DragonFly 1.10.0 2007-08-06 [DFB] 501Mac OS X 10.5 2007-10-26 [APL] 502OpenBSD 4.2 2007-11-01 [OBD] 503NetBSD 4.0 2007-12-19 [NBD] 504FreeBSD 6.3 2008-01-18 [FBD] 505DragonFly 1.12.0 2008-02-26 [DFB] 506FreeBSD 7.0 2008-02-27 [FBD] 507OpenBSD 4.3 2008-05-01 [OBD] 508DragonFly 2.0.0 2008-07-21 [DFB] 509OpenBSD 4.4 2008-11-01 [OBD] 510FreeBSD 6.4 2008-11-28 [FBD] 511FreeBSD 7.1 2009-01-04 [FBD] 512DragonFly 2.2.0 2009-02-17 [DFB] 513NetBSD 5.0 2009-04-29 [NBD] 514OpenBSD 4.5 2009-05-01 [OBD] 515FreeBSD 7.2 2009-05-04 [FBD] 516DragonFly 2.4.0 2009-09-16 [DFB] 517OpenBSD 4.6 2009-10-18 [OBD] 518FreeBSD 8.0 2009-11-26 [FBD] 519FreeBSD 7.3 2010-03-23 [FBD] 520DragonFly 2.6.0 2010-03-28 [DFB] 521OpenBSD 4.7 2010-05-19 [OBD] 522FreeBSD 8.1 2010-07-24 [FBD] 523 524Bibliography 525------------------------ 526 527Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 528Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 529System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 530 531Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 532Company, Inc., 1994. ISBN 0-201-54777-5 533 534McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 535Quarterman. The Design and Implementation of the 4.4BSD Operating 536System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 537 538McKusick, Marshall Kirk, George Neville-Neil. The Design and 539Implementation of the FreeBSD Operating System. 540Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 541 542Doug McIlroy. Research Unix Reader. 543 544Michael G. Brown. The Role of BSD in the Development of Unix. 545Presented to the Tasmanian Unix Special Interest Group of the 546Australian Computer Society, Hobart, August 1993. 547 548Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 549URL: http://www.byte.com/art/9410/sec8/art3.htm 550 551Andreas Klemm, Lars K�ller. If you're going to San Francisco ... 552Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 553 554BSD Release Announcements collection. 555URL: http://www.FreeBSD.org/releases/ 556 557BSD Hypertext Man Pages 558URL: http://www.FreeBSD.org/cgi/man.cgi 559 560UNIX history graphing project 561URL: http://minnie.tuhs.org/Unix_History/index.html 562 563UNIX history 564URL: http://www.levenez.com/unix/ 565 566James Howard: The BSD Family Tree 567URL: http://ezine.daemonnews.org/200104/bsd_family.html 568("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 569 570 571Acknowledgments 572--------------- 573 574Josh Gilliam for suggestions, bug fixes, and finding very old 575original BSD announcements from Usenet or tapes. 576 577Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 578 579-- 580Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG> 581URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree 582 583$FreeBSD: src/share/misc/bsd-family-tree,v 1.139 2010/08/05 18:05:37 maxim Exp $ 584