bsd-family-tree revision 173289
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 2.7.9BSD 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 | v `-|------|-----------------|---------------------. 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 | | | | OpenBSD 4.2 | 216 | V | | | | 217FreeBSD 7 -current | NetBSD -current OpenBSD -current | 218 | | | | | 219 v v v v v 220 221Time 222---------------- 223 224Time tolerance +/- 6 months, depending on which book/article you read; if it 225was the announcement in Usenet or if it was available as tape. 226 227[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 228 and John Quarterman. The Design and Implementation of 229 the 4.4BSD Operating System. 230[APL] Apple website [http://www.apple.com/macosx/] 231[BSDI] Berkeley Software Design, Inc. 232[DFB] DragonFlyBSD Project, The. 233[DOC] README, COPYRIGHT on tape. 234[FBD] FreeBSD Project, The. 235[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 236 Volume 11, Info 4, April, 1987. 237[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 238 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 239[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 240 Changes in the Kernel in 2.9BSD. Second Berkeley Software 241 Distribution UNIX Version 2.9, July, 1983. 242[NBD] NetBSD Project, The. 243[OBD] OpenBSD Project, The. 244[QCU] Salus, Peter H. A quarter century of UNIX. 245[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 246[USE] Usenet announcement. 247[WRS] Wind River Systems, Inc. 248[dmr] Dennis Ritchie, via E-Mail 249 250Multics 1965 251UNIX Summer 1969 252 DEC PDP-7 253First Edition 1971-11-03 [QCU] 254 DEC PDP-11/20, Assembler 255Second Edition 1972-06-12 [QCU] 256 10 UNIX installations 257Third Edition 1973-02-xx [QCU] 258 Pipes, 16 installations 259Fourth Edition 1973-11-xx [QCU] 260 rewriting in C effected, 261 above 30 installations 262Fifth Edition 1974-06-xx [QCU] 263 above 50 installations 264Sixth Edition 1975-05-xx [QCU] 265 port to DEC Vax 266Seventh Edition 1979-01-xx [QCU] 267 first portable UNIX 268Eighth Edition 1985-02-xx [QCU] 269 VAX 11/750, VAX 11/780 [dmr] 270 descended from 4.1c BSD [dmr] 271 descended from 4.1 BSD [44B] 272 scooping-out and replacement of the character-device 273 and networking part by the streams mechanism 274 275Ninth Edition 1986-09-xx [QCU] 276Tenth Edition 1989-10-xx [QCU] 277 2781BSD late 1977 279 1978-03-09 [QCU] 280 PDP-11, Pascal, ex(1) 281 30 free copies of 1BSD sent out 282 35 tapes sold for 50 USD [QCU] 2832BSD mid 1978 [QCU] 284 75 2BSD tapes shipped 2852.7.9BSD ?? [SMS] 2862.8BSD 1981-07-xx [KSJ] 287 2882.8.1BSD 1982-01-xx [QCU] 289 set of performance improvements 2902.9BSD 1983-07-xx [KSJ] 2912.9.1BSD 1983-11-xx 2922.9BSD-Seismo 1985-08-xx [SMS] 2932.10BSD 1987-04-xx [KKK] 2942.10.1BSD 1989-01-xx [SMS] 2952.11BSD 1992-02-xx [SMS] 2962.11BSD rev #430 1999-12-13 [SMS] 297 29832V 1978-1[01]-xx [QCU] 2993BSD late 1979 [QCU] 300 virtual memory, page replacement, 301 demand paging 3024.0BSD 1980-10-xx 3034.1BSD 1981-07-08 [DOC] 3044.1aBSD 1982-04-xx 305 alpha release, 100 sites, networking [44B] 3064.1bBSD internal release, fast filesystem [44B] 3074.1cBSD late 1982 308 beta release, IPC [44B] 3094.2BSD 1983-09-xx [QCU] 310 1983-08-03 [DOC] 3114.3BSD 1986-06-xx [QCU] 312 1986-04-05 [KB], [DOC] 3134.3BSD Tahoe 1988-06-15 [QCU], [DOC] 3144.3BSD NET/1 1988-11-xx [QCU] 315 1989-01-01 [DOC] 3164.3BSD Reno 1990-06-29 [QCU], [DOC] 3174.3BSD NET/2 1991-06-28 [QCU], [DOC] 318 319BSD/386 ALPHA 1991-12-xx [BSDI] 320 first code released to people outside BSDI 321386BSD 0.0 1992-02-xx [DOC] 322BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 323BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 324386BSD 0.1 1992-07-28 [DOC] 3254.4BSD Alpha 1992-07-07 326BSD/386 0.9.3 1992-10-xx [BSDI] 327 first external gamma; G customers 328BSD/386 0.9.4 1992-12-xx [BSDI] 329 would have been 1.0 except for request 330 for preliminary injunction 331BSD/386 1.0 1993-03-xx [BSDI] 332 injunction denied; first official release 333NetBSD 0.8 1993-04-20 [NBD] 3344.4BSD 1993-06-01 [USE] 335NetBSD 0.9 1993-08-23 [NBD] 336FreeBSD 1.0 1993-11-01 [FBD] 337FreeBSD 1.0.2 1993-11-14 [FBD] 338 supersedes 1.0 13 days after release. 339BSD/386 1.1 1994-02-xx [BSDI] 3404.4BSD Lite 1994-03-01 [USE] 341FreeBSD 1.1 1994-05-07 [FBD] 342FreeBSD 1.1.5 1994-06-30 [FBD] 343FreeBSD 1.1.5.1 1994-07-05 [FBD] 344 supersedes 1.1.5 5 days after release. 345NetBSD 1.0 1994-10-26 [NBD] 346386BSD 1.0 1994-11-12 [USE] 347FreeBSD 2.0 1994-11-23 [FBD] 348BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 349FreeBSD 2.0.5 1995-06-10 [FBD] 350BSD/OS 2.0.1 1995-06-xx [BSDI] 3514.4BSD Lite Release 2 1995-06-xx [44B] 352 the true final distribution from the CSRG 353FreeBSD 2.1.0 1995-11-19 [FBD] 354NetBSD 1.1 1995-11-26 [NBD] 355BSD/OS 2.1 1996-01-xx [BSDI] 356FreeBSD 2.1.5 1996-07-14 [FBD] 357NetBSD 1.2 1996-10-04 [NBD] 358OpenBSD 2.0 1996-10-18 [OBD] 359FreeBSD 2.1.6 1996-11-16 [FBD] 360FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 361Rhapsody 1997-xx-xx 362FreeBSD 2.1.7 1997-02-20 [FBD] 363BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 364FreeBSD 2.2.0 1997-03-16 [FBD] 365FreeBSD 2.2.1 1997-03-25 [FBD] 366FreeBSD 2.2.2 1997-05-16 [FBD] 367NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 368OpenBSD 2.1 1997-06-01 [OBD] 369FreeBSD 2.2.5 1997-10-22 [FBD] 370OpenBSD 2.2 1997-12-01 [OBD] 371NetBSD 1.3 1998-01-04 [NBD] 372FreeBSD 2.2.6 1998-03-25 [FBD] 373NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 374BSD/OS 3.1 1998-03-xx [BSDI] 375OpenBSD 2.3 1998-05-19 [OBD] 376NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 377FreeBSD 2.2.7 1998-07-22 [FBD] 378BSD/OS 4.0 1998-08-xx [BSDI] 379 2-lock MP support, ELF executables 380FreeBSD 3.0 1998-10-16 [FBD] 381 FreeBSD-3.0 is a snapshot from -current, 382 while 3.1 and 3.2 are from 3.x-stable which 383 was branched quite some time after 3.0-release 384FreeBSD 2.2.8 1998-11-29 [FBD] 385OpenBSD 2.4 1998-12-01 [OBD] 386NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 387FreeBSD 3.1 1999-02-15 [FBD] 388BSD/OS 4.0.1 1999-03-xx [BSDI] 389NetBSD 1.4 1999-05-12 [NBD] 390FreeBSD 3.2 1999-05-17 [FBD] 391OpenBSD 2.5 1999-05-19 [OBD] 392NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 393FreeBSD 3.3 1999-09-17 [FBD] 394OpenBSD 2.6 1999-12-01 [OBD] 395FreeBSD 3.4 1999-12-20 [FBD] 396BSD/OS 4.1 1999-12-xx [BSDI] 397FreeBSD 4.0 2000-03-13 [FBD] 398NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 399OpenBSD 2.7 2000-06-15 [OBD] 400FreeBSD 3.5 2000-06-24 [FBD] 401FreeBSD 4.1 2000-07-27 [FBD] 402FreeBSD 3.5.1 2000-07-28 [FBD] 403FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 404FreeBSD 4.2 2000-11-21 [FBD] 405NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 406BSD/OS 4.2 2000-11-29 [BSDI] 407OpenBSD 2.8 2000-12-01 [OBD] 408NetBSD 1.5 2000-12-06 [NBD] 409Mac OS X 10.0 2001-03-24 [APL] 410FreeBSD 4.3 2001-04-20 [FBD] 411OpenBSD 2.9 2001-06-01 [OBD] 412NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 413NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 414FreeBSD 4.4 2001-09-18 [FBD] 415Mac OS X 10.1 2001-09-29 [APL] 416OpenBSD 3.0 2001-12-01 [OBD] 417FreeBSD 4.5 2002-01-29 [FBD] 418BSD/OS 4.3 2002-03-14 [WRS] 419OpenBSD 3.1 2002-05-19 [OBD] 420FreeBSD 4.6 2002-06-15 [FBD] 421NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 422FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 423Mac OS X 10.2 2002-08-23 [APL] 424NetBSD 1.6 2002-09-14 [NBD] 425FreeBSD 4.7 2002-10-08 [FBD] 426OpenBSD 3.2 2002-11-01 [OBD] 427FreeBSD 5.0 2003-01-17 [FBD] 428 FreeBSD 5.0 is a separate branch off of 429 -current, similar to 3.0. 430FreeBSD 4.8 2003-04-03 [FBD] 431NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 432OpenBSD 3.3 2003-05-01 [OBD] 433BSD/OS 5.0 2003-05-?? [WRS] 434FreeBSD 5.1 2003-06-09 [FBD] 435Mac OS X 10.3 2003-10-24 [APL] 436FreeBSD 4.9 2003-10-28 [FBD] 437BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 438OpenBSD 3.4 2003-11-01 [OBD] 439FreeBSD 5.2 2004-01-12 [FBD] 440FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 441NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 442OpenBSD 3.5 2004-04-01 [OBD] 443FreeBSD 4.10 2004-05-27 [FBD] 444DragonFly 1.0 2004-07-12 [DFB] 445OpenBSD 3.6 2004-10-29 [OBD] 446FreeBSD 5.3 2004-11-06 [FBD] 447NetBSD 2.0 2004-12-09 [NBD] 448FreeBSD 4.11 2005-01-25 [FBD] 449DragonFly 1.2.0 2005-04-08 [DFB] 450NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 451Mac OS X 10.4 2005-04-29 [APL] 452FreeBSD 5.4 2005-05-09 [FBD] 453OpenBSD 3.7 2005-05-19 [OBD] 454NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 455OpenBSD 3.8 2005-11-01 [OBD] 456FreeBSD 6.0 2005-11-01 [FBD] 457NetBSD 2.1 2005-11-02 [NBD] 458NetBSD 3.0 2005-12-23 [NBD] 459DragonFly 1.4.0 2006-01-08 [DFB] 460OpenBSD 3.9 2006-05-01 [OBD] 461FreeBSD 6.1 2006-05-08 [FBD] 462FreeBSD 5.5 2006-05-25 [FBD] 463NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 464DragonFly 1.6.0 2006-07-24 [DFB] 465OpenBSD 4.0 2006-11-01 [OBD] 466NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 467NetBSD 3.1 2006-11-04 [NBD] 468FreeBSD 6.2 2007-01-15 [FBD] 469DragonFly 1.8.0 2007-01-30 [DFB] 470OpenBSD 4.1 2007-05-01 [OBD] 471DragonFly 1.10.0 2007-08-06 [DFB] 472OpenBSD 4.2 2007-11-01 [OBD] 473 474Bibliography 475------------------------ 476 477Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 478Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 479System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 480 481Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 482Company, Inc., 1994. ISBN 0-201-54777-5 483 484McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 485Quarterman. The Design and Implementation of the 4.4BSD Operating 486System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 487 488McKusick, Marshall Kirk, George Neville-Neil. The Design and 489Implementation of the FreeBSD Operating System. 490Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 491 492Doug McIlroy. Research Unix Reader. 493 494Michael G. Brown. The Role of BSD in the Development of Unix. 495Presented to the Tasmanian Unix Special Interest Group of the 496Australian Computer Society, Hobart, August 1993. 497 498Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 499URL: http://www.byte.com/art/9410/sec8/art3.htm 500 501Andreas Klemm, Lars K�ller. If you're going to San Francisco ... 502Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 503 504BSD Release Announcements collection. 505URL: http://www.de.FreeBSD.org/de/ftp/releases/ 506 507BSD Hypertext Man Pages 508URL: http://www.FreeBSD.org/cgi/man.cgi 509 510UNIX history graphing project 511URL: http://minnie.tuhs.org/Unix_History/index.html 512 513UNIX history 514URL: http://www.levenez.com/unix/ 515 516James Howard: The BSD Family Tree 517URL: http://ezine.daemonnews.org/200104/bsd_family.html 518("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 519 520 521Acknowledgments 522--------------- 523 524Josh Gilliam for suggestions, bug fixes, and finding very old 525original BSD announcements from Usenet or tapes. 526 527Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 528 529-- 530Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG> 531URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree 532 533$FreeBSD: head/share/misc/bsd-family-tree 173289 2007-11-02 19:25:06Z maxim $ 534