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 | V | | | | 216FreeBSD 7 -current | NetBSD -current OpenBSD -current | 217 | | | | | 218 v v v v v 219 220Time 221---------------- 222 223Time tolerance +/- 6 months, depending on which book/article you read; if it 224was the announcement in Usenet or if it was available as tape. 225 226[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 227 and John Quarterman. The Design and Implementation of 228 the 4.4BSD Operating System. 229[APL] Apple website [http://www.apple.com/macosx/] 230[BSDI] Berkeley Software Design, Inc. 231[DFB] DragonFlyBSD Project, The. 232[DOC] README, COPYRIGHT on tape. 233[FBD] FreeBSD Project, The. 234[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 235 Volume 11, Info 4, April, 1987. 236[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 237 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 238[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 239 Changes in the Kernel in 2.9BSD. Second Berkeley Software 240 Distribution UNIX Version 2.9, July, 1983. 241[NBD] NetBSD Project, The. 242[OBD] OpenBSD Project, The. 243[QCU] Salus, Peter H. A quarter century of UNIX. 244[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 245[USE] Usenet announcement. 246[WRS] Wind River Systems, Inc. 247[dmr] Dennis Ritchie, via E-Mail 248 249Multics 1965 250UNIX Summer 1969 251 DEC PDP-7 252First Edition 1971-11-03 [QCU] 253 DEC PDP-11/20, Assembler 254Second Edition 1972-06-12 [QCU] 255 10 UNIX installations 256Third Edition 1973-02-xx [QCU] 257 Pipes, 16 installations 258Fourth Edition 1973-11-xx [QCU] 259 rewriting in C effected, 260 above 30 installations 261Fifth Edition 1974-06-xx [QCU] 262 above 50 installations 263Sixth Edition 1975-05-xx [QCU] 264 port to DEC Vax 265Seventh Edition 1979-01-xx [QCU] 266 first portable UNIX 267Eighth Edition 1985-02-xx [QCU] 268 VAX 11/750, VAX 11/780 [dmr] 269 descended from 4.1c BSD [dmr] 270 descended from 4.1 BSD [44B] 271 scooping-out and replacement of the character-device 272 and networking part by the streams mechanism 273 274Ninth Edition 1986-09-xx [QCU] 275Tenth Edition 1989-10-xx [QCU] 276 2771BSD late 1977 278 1978-03-09 [QCU] 279 PDP-11, Pascal, ex(1) 280 30 free copies of 1BSD sent out 281 35 tapes sold for 50 USD [QCU] 2822BSD mid 1978 [QCU] 283 75 2BSD tapes shipped 2842.7.9BSD ?? [SMS] 2852.8BSD 1981-07-xx [KSJ] 286 2872.8.1BSD 1982-01-xx [QCU] 288 set of performance improvements 2892.9BSD 1983-07-xx [KSJ] 2902.9.1BSD 1983-11-xx 2912.9BSD-Seismo 1985-08-xx [SMS] 2922.10BSD 1987-04-xx [KKK] 2932.10.1BSD 1989-01-xx [SMS] 2942.11BSD 1992-02-xx [SMS] 2952.11BSD rev #430 1999-12-13 [SMS] 296 29732V 1978-1[01]-xx [QCU] 2983BSD late 1979 [QCU] 299 virtual memory, page replacement, 300 demand paging 3014.0BSD 1980-10-xx 3024.1BSD 1981-07-08 [DOC] 3034.1aBSD 1982-04-xx 304 alpha release, 100 sites, networking [44B] 3054.1bBSD internal release, fast filesystem [44B] 3064.1cBSD late 1982 307 beta release, IPC [44B] 3084.2BSD 1983-09-xx [QCU] 309 1983-08-03 [DOC] 3104.3BSD 1986-06-xx [QCU] 311 1986-04-05 [KB], [DOC] 3124.3BSD Tahoe 1988-06-15 [QCU], [DOC] 3134.3BSD NET/1 1988-11-xx [QCU] 314 1989-01-01 [DOC] 3154.3BSD Reno 1990-06-29 [QCU], [DOC] 3164.3BSD NET/2 1991-06-28 [QCU], [DOC] 317 318BSD/386 ALPHA 1991-12-xx [BSDI] 319 first code released to people outside BSDI 320386BSD 0.0 1992-02-xx [DOC] 321BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 322BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 323386BSD 0.1 1992-07-28 [DOC] 3244.4BSD Alpha 1992-07-07 325BSD/386 0.9.3 1992-10-xx [BSDI] 326 first external gamma; G customers 327BSD/386 0.9.4 1992-12-xx [BSDI] 328 would have been 1.0 except for request 329 for preliminary injunction 330BSD/386 1.0 1993-03-xx [BSDI] 331 injunction denied; first official release 332NetBSD 0.8 1993-04-20 [NBD] 3334.4BSD 1993-06-01 [USE] 334NetBSD 0.9 1993-08-23 [NBD] 335FreeBSD 1.0 1993-11-01 [FBD] 336FreeBSD 1.0.2 1993-11-14 [FBD] 337 supersedes 1.0 13 days after release. 338BSD/386 1.1 1994-02-xx [BSDI] 3394.4BSD Lite 1994-03-01 [USE] 340FreeBSD 1.1 1994-05-07 [FBD] 341FreeBSD 1.1.5 1994-06-30 [FBD] 342FreeBSD 1.1.5.1 1994-07-05 [FBD] 343 supersedes 1.1.5 5 days after release. 344NetBSD 1.0 1994-10-26 [NBD] 345386BSD 1.0 1994-11-12 [USE] 346FreeBSD 2.0 1994-11-23 [FBD] 347BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 348FreeBSD 2.0.5 1995-06-10 [FBD] 349BSD/OS 2.0.1 1995-06-xx [BSDI] 3504.4BSD Lite Release 2 1995-06-xx [44B] 351 the true final distribution from the CSRG 352FreeBSD 2.1.0 1995-11-19 [FBD] 353NetBSD 1.1 1995-11-26 [NBD] 354BSD/OS 2.1 1996-01-xx [BSDI] 355FreeBSD 2.1.5 1996-07-14 [FBD] 356NetBSD 1.2 1996-10-04 [NBD] 357OpenBSD 2.0 1996-10-18 [OBD] 358FreeBSD 2.1.6 1996-11-16 [FBD] 359FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 360Rhapsody 1997-xx-xx 361FreeBSD 2.1.7 1997-02-20 [FBD] 362BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 363FreeBSD 2.2.0 1997-03-16 [FBD] 364FreeBSD 2.2.1 1997-03-25 [FBD] 365FreeBSD 2.2.2 1997-05-16 [FBD] 366NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 367OpenBSD 2.1 1997-06-01 [OBD] 368FreeBSD 2.2.5 1997-10-22 [FBD] 369OpenBSD 2.2 1997-12-01 [OBD] 370NetBSD 1.3 1998-01-04 [NBD] 371FreeBSD 2.2.6 1998-03-25 [FBD] 372NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 373BSD/OS 3.1 1998-03-xx [BSDI] 374OpenBSD 2.3 1998-05-19 [OBD] 375NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 376FreeBSD 2.2.7 1998-07-22 [FBD] 377BSD/OS 4.0 1998-08-xx [BSDI] 378 2-lock MP support, ELF executables 379FreeBSD 3.0 1998-10-16 [FBD] 380 FreeBSD-3.0 is a snapshot from -current, 381 while 3.1 and 3.2 are from 3.x-stable which 382 was branched quite some time after 3.0-release 383FreeBSD 2.2.8 1998-11-29 [FBD] 384OpenBSD 2.4 1998-12-01 [OBD] 385NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 386FreeBSD 3.1 1999-02-15 [FBD] 387BSD/OS 4.0.1 1999-03-xx [BSDI] 388NetBSD 1.4 1999-05-12 [NBD] 389FreeBSD 3.2 1999-05-17 [FBD] 390OpenBSD 2.5 1999-05-19 [OBD] 391NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 392FreeBSD 3.3 1999-09-17 [FBD] 393OpenBSD 2.6 1999-12-01 [OBD] 394FreeBSD 3.4 1999-12-20 [FBD] 395BSD/OS 4.1 1999-12-xx [BSDI] 396FreeBSD 4.0 2000-03-13 [FBD] 397NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 398OpenBSD 2.7 2000-06-15 [OBD] 399FreeBSD 3.5 2000-06-24 [FBD] 400FreeBSD 4.1 2000-07-27 [FBD] 401FreeBSD 3.5.1 2000-07-28 [FBD] 402FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 403FreeBSD 4.2 2000-11-21 [FBD] 404NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 405BSD/OS 4.2 2000-11-29 [BSDI] 406OpenBSD 2.8 2000-12-01 [OBD] 407NetBSD 1.5 2000-12-06 [NBD] 408Mac OS X 10.0 2001-03-24 [APL] 409FreeBSD 4.3 2001-04-20 [FBD] 410OpenBSD 2.9 2001-06-01 [OBD] 411NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 412NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 413FreeBSD 4.4 2001-09-18 [FBD] 414Mac OS X 10.1 2001-09-29 [APL] 415OpenBSD 3.0 2001-12-01 [OBD] 416FreeBSD 4.5 2002-01-29 [FBD] 417BSD/OS 4.3 2002-03-14 [WRS] 418OpenBSD 3.1 2002-05-19 [OBD] 419FreeBSD 4.6 2002-06-15 [FBD] 420NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 421FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 422Mac OS X 10.2 2002-08-23 [APL] 423NetBSD 1.6 2002-09-14 [NBD] 424FreeBSD 4.7 2002-10-08 [FBD] 425OpenBSD 3.2 2002-11-01 [OBD] 426FreeBSD 5.0 2003-01-17 [FBD] 427 FreeBSD 5.0 is a separate branch off of 428 -current, similar to 3.0. 429FreeBSD 4.8 2003-04-03 [FBD] 430NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 431OpenBSD 3.3 2003-05-01 [OBD] 432BSD/OS 5.0 2003-05-?? [WRS] 433FreeBSD 5.1 2003-06-09 [FBD] 434Mac OS X 10.3 2003-10-24 [APL] 435FreeBSD 4.9 2003-10-28 [FBD] 436BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 437OpenBSD 3.4 2003-11-01 [OBD] 438FreeBSD 5.2 2004-01-12 [FBD] 439FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 440NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 441OpenBSD 3.5 2004-04-01 [OBD] 442FreeBSD 4.10 2004-05-27 [FBD] 443DragonFly 1.0 2004-07-12 [DFB] 444OpenBSD 3.6 2004-10-29 [OBD] 445FreeBSD 5.3 2004-11-06 [FBD] 446NetBSD 2.0 2004-12-09 [NBD] 447FreeBSD 4.11 2005-01-25 [FBD] 448DragonFly 1.2.0 2005-04-08 [DFB] 449NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 450Mac OS X 10.4 2005-04-29 [APL] 451FreeBSD 5.4 2005-05-09 [FBD] 452OpenBSD 3.7 2005-05-19 [OBD] 453NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 454OpenBSD 3.8 2005-11-01 [OBD] 455FreeBSD 6.0 2005-11-01 [FBD] 456NetBSD 2.1 2005-11-02 [NBD] 457NetBSD 3.0 2005-12-23 [NBD] 458DragonFly 1.4.0 2006-01-08 [DFB] 459OpenBSD 3.9 2006-05-01 [OBD] 460FreeBSD 6.1 2006-05-08 [FBD] 461FreeBSD 5.5 2006-05-25 [FBD] 462NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 463DragonFly 1.6.0 2006-07-24 [DFB] 464OpenBSD 4.0 2006-11-01 [OBD] 465NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 466NetBSD 3.1 2006-11-04 [NBD] 467FreeBSD 6.2 2007-01-15 [FBD] 468DragonFly 1.8.0 2007-01-30 [DFB] 469OpenBSD 4.1 2007-05-01 [OBD] 470DragonFly 1.10.0 2007-08-06 [DFB] 471 472Bibliography 473------------------------ 474 475Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 476Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 477System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 478 479Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 480Company, Inc., 1994. ISBN 0-201-54777-5 481 482McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 483Quarterman. The Design and Implementation of the 4.4BSD Operating 484System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 485 486McKusick, Marshall Kirk, George Neville-Neil. The Design and 487Implementation of the FreeBSD Operating System. 488Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 489 490Doug McIlroy. Research Unix Reader. 491 492Michael G. Brown. The Role of BSD in the Development of Unix. 493Presented to the Tasmanian Unix Special Interest Group of the 494Australian Computer Society, Hobart, August 1993. 495 496Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 497URL: http://www.byte.com/art/9410/sec8/art3.htm 498 499Andreas Klemm, Lars K�ller. If you're going to San Francisco ... 500Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 501 502BSD Release Announcements collection. 503URL: http://www.de.FreeBSD.org/de/ftp/releases/ 504 505BSD Hypertext Man Pages 506URL: http://www.FreeBSD.org/cgi/man.cgi 507 508UNIX history graphing project 509URL: http://minnie.tuhs.org/Unix_History/index.html 510 511UNIX history 512URL: http://www.levenez.com/unix/ 513 514James Howard: The BSD Family Tree 515URL: http://ezine.daemonnews.org/200104/bsd_family.html 516("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 517 518 519Acknowledgments 520--------------- 521 522Josh Gilliam for suggestions, bug fixes, and finding very old 523original BSD announcements from Usenet or tapes. 524 525Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 526 527-- 528Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG> 529URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree 530 531$FreeBSD: src/share/misc/bsd-family-tree,v 1.115 2007/08/07 15:35:24 maxim Exp $ 532$DragonFly: src/share/misc/bsd-family-tree,v 1.12 2007/08/07 23:19:14 swildner Exp $ 533