bsd-family-tree revision 1.12
11.6SitojunThe UNIX system family tree: Research and BSD 21.6Sitojun--------------------------------------------- 31.1Sabs 41.1SabsFirst Edition (V1) 51.1Sabs | 61.1SabsSecond Edition (V2) 71.1Sabs | 81.1SabsThird Edition (V3) 91.1Sabs | 101.1SabsFourth Edition (V4) 111.1Sabs | 121.1SabsFifth Edition (V5) 131.1Sabs | 141.1SabsSixth Edition (V6) -----* 151.1Sabs \ | 161.1Sabs \ | 171.1Sabs \ | 181.1SabsSeventh Edition (V7) | 191.1Sabs \ | 201.1Sabs \ 1BSD 211.1Sabs 32V | 221.1Sabs \ 2BSD---------------* 231.1Sabs \ / | 241.1Sabs \ / | 251.1Sabs \/ | 261.1Sabs 3BSD | 271.1Sabs | | 281.1Sabs 4.0BSD 2.7.9BSD 291.1Sabs | | 301.6Sitojun 4.1BSD --------------> 2.8BSD 311.6Sitojun | | 321.6Sitojun 4.1aBSD -----------\ | 331.6Sitojun | \ | 341.6Sitojun 4.1bBSD \ | 351.6Sitojun | \ | 361.6Sitojun *------ 4.1cBSD --------------> 2.9BSD 371.6Sitojun / | | 381.6SitojunEighth Edition | 2.9BSD-Seismo 391.1Sabs | | | 401.1Sabs +----<--- 4.2BSD 2.9.1BSD 411.1Sabs | | | 421.1Sabs +----<--- 4.3BSD -------------> 2.10BSD 431.1Sabs | | / | 441.1SabsNinth Edition | / 2.10.1BSD 451.1Sabs | 4.3BSD Tahoe-----+ | 461.1Sabs | | \ | 471.1Sabs | | \ | 481.1Sabs v | 2.11BSD 491.1SabsTenth Edition | | 501.6Sitojun | 2.11BSD rev #430 511.1Sabs 4.3BSD NET/1 | 521.1Sabs | v 531.1Sabs 4.3BSD Reno 541.1Sabs | 551.1Sabs *---------- 4.3BSD NET/2 -------------------+-------------* 561.1Sabs | | | | 571.7Sitojun386BSD 0.0 | | BSD/386 ALPHA 581.1Sabs | | | | 591.7Sitojun386BSD 0.1 ------------>+ | BSD/386 0.3.[13] 601.1Sabs | \ | 4.4BSD Alpha | 611.7Sitojun | 386BSD 1.0 | | BSD/386 0.9.[34] 621.1Sabs | | 4.4BSD | 631.1Sabs | | / | | 641.1Sabs | | 4.4BSD-Encumbered | | 651.7Sitojun | NetBSD 0.8 | BSD/386 1.0 661.1Sabs | | | | 671.7SitojunFreeBSD 1.0 NetBSD 0.9 | BSD/386 1.1 681.7Sitojun | | .----- 4.4BSD Lite | 691.7SitojunFreeBSD 1.1 | / / | \ | 701.7Sitojun | | / / | \ | 711.7SitojunFreeBSD 1.1.5 .---|--------' / | \ | 721.7Sitojun | / | / | \ | 731.7SitojunFreeBSD 1.1.5.1 / | / | \ | 741.7Sitojun | / NetBSD 1.0 <-' | \ | 751.7Sitojun | / | | \ | 761.7SitojunFreeBSD 2.0 <--' | | BSD/OS 2.0 771.7Sitojun | \ | | 781.7SitojunFreeBSD 2.0.5 \ | BSD/OS 2.0.1 791.11Sitojun | .-----\------------- 4.4BSD Lite2 | 801.11Sitojun | | \ | | | | | 811.11Sitojun | | .-----|------Rhapsody | | | | 821.11Sitojun | | | | NetBSD 1.3 | | | 831.11Sitojun | | | | OpenBSD 2.3 | | 841.11Sitojun | | | | BSD/OS 3.0 | 851.11SitojunFreeBSD 2.1 | | | | 861.11Sitojun | | | | NetBSD 1.1 ------. BSD/OS 2.1 871.11Sitojun | FreeBSD 2.1.5 | | | \ | 881.11Sitojun | | | | NetBSD 1.2 \ BSD/OS 3.0 891.11Sitojun | FreeBSD 2.1.6 | | | \ OpenBSD 2.0 | 901.11Sitojun | | | | | \ | | 911.11Sitojun | FreeBSD 2.1.6.1 | | | \ | | 921.11Sitojun | | | | | \ | | 931.11Sitojun | FreeBSD 2.1.7 | | | | | | 941.11Sitojun | | | | | NetBSD 1.2.1 | | 951.11Sitojun | FreeBSD 2.1.7.1 | | | | | 961.11Sitojun | | | | | | 971.11Sitojun | | | | | | 981.11Sitojun *-FreeBSD 2.2 | | | | | 991.11Sitojun | \ | | | | | 1001.11Sitojun | FreeBSD 2.2.1 | | | | | 1011.11Sitojun | | | | | | | 1021.11Sitojun | FreeBSD 2.2.2 | | | OpenBSD 2.1 | 1031.11Sitojun | | | | | | | 1041.11Sitojun | FreeBSD 2.2.5 | | | | | 1051.11Sitojun | | | | | OpenBSD 2.2 | 1061.11Sitojun | | | | NetBSD 1.3 | | 1071.11Sitojun | FreeBSD 2.2.6 | | | | | | 1081.11Sitojun | | | | | NetBSD 1.3.1 | BSD/OS 3.1 1091.11Sitojun | | | | | | OpenBSD 2.3 | 1101.11Sitojun | | | | | NetBSD 1.3.2 | | 1111.11Sitojun | FreeBSD 2.2.7 | | | | | | 1121.11Sitojun | | | | | | | BSD/OS 4.0 1131.11Sitojun | v | | | | | | 1141.11Sitojun | FreeBSD 2.2.8 | | | | | | 1151.11Sitojun | | | | | OpenBSD 2.4 | 1161.11SitojunFreeBSD 3.0 <--------* | | v | | 1171.11Sitojun | | | NetBSD 1.3.3 | | 1181.11Sitojun *---FreeBSD 3.1 | | | | 1191.11Sitojun | | | | | BSD/OS 4.0.1 1201.11Sitojun | FreeBSD 3.2----* | NetBSD 1.4 OpenBSD 2.5 | 1211.11Sitojun | | | | | | | | | 1221.11Sitojun | | | | | | | | | 1231.11Sitojun | | | | | | | | | 1241.11Sitojun | FreeBSD 3.3 | | | | NetBSD 1.4.1 | | 1251.11Sitojun | | | | | | | OpenBSD 2.6 | 1261.11Sitojun | FreeBSD 3.4 | | | | | | | 1271.11Sitojun | | | | | | | | BSD/OS 4.1 1281.11SitojunFreeBSD 4.0 | | | | | NetBSD 1.4.2 | | 1291.11Sitojun | | | | | | | | | 1301.11Sitojun | | | | | | | | | 1311.11Sitojun | FreeBSD 3.5 | | | | | OpenBSD 2.7 | 1321.11Sitojun | | | | | | | | | 1331.11Sitojun | FreeBSD 3.5.1 | | | | | | | 1341.11Sitojun | | | | | | | | 1351.11Sitojun *---FreeBSD 4.1 | | | | | | | 1361.11Sitojun | | | | (?) | | | | 1371.11Sitojun | FreeBSD 4.1.1 | | / | | | | 1381.11Sitojun | | | | / | v | | 1391.11Sitojun | FreeBSD 4.2 Darwin/ | NetBSD 1.4.3 | | 1401.11Sitojun | | Mac OS X | OpenBSD 2.8 BSD/OS 4.2 1411.11Sitojun | | 10.0 NetBSD 1.5 | | 1421.11Sitojun | FreeBSD 4.3 | | | | v 1431.11Sitojun | | | | v OpenBSD 2.9 1441.11Sitojun | | | | NetBSD 1.5.1 | 1451.11Sitojun | | | | | | 1461.11Sitojun | FreeBSD 4.4 | | NetBSD 1.5.2 | 1471.12Sgrant | | | | | | 1481.12Sgrant | v | | NetBSD 1.5.3 | 1491.12Sgrant | | | | 1501.11Sitojun | | | | 1511.11SitojunFreeBSD 5.0-current | NetBSD -current OpenBSD -current 1521.11Sitojun | | | | 1531.11Sitojun v | v v 1541.11Sitojun Mac OS X 1551.11Sitojun 10.1 1561.1Sabs 1571.1SabsTime 1581.1Sabs---------------- 1591.1Sabs 1601.7SitojunTime tolerance +/- 6 months, depending on which book/article you read; if it 1611.7Sitojunwas the announcement in Usenet or if it was available as tape. 1621.1Sabs 1631.1Sabs[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 1641.1Sabs and John Quarterman. The Design and Implementation of 1651.1Sabs the 4.4BSD Operating System. 1661.11Sitojun[APL] Apple website [http://www.apple.com/macosx/] 1671.1Sabs[DOC] README, COPYRIGHT on tape. 1681.1Sabs[QCU] Salus, Peter H. A quarter century of UNIX. 1691.1Sabs[U25] Peter H. Salus. Unix at 25. 1701.1Sabs[USE] Usenet announcement. 1711.1Sabs[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 1721.1Sabs Changes in the Kernel in 2.9BSD. Second Berkeley Software 1731.1Sabs Distribution UNIX Version 2.9, July, 1983. 1741.1Sabs[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 1751.1Sabs Volume 11, Info 4, April, 1987. 1761.1Sabs[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 1771.1Sabs comp.bugs.4bsd.ucb-fixes, June 15, 1988. 1781.1Sabs[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 1791.1Sabs[FBD] FreeBSD Project, The. 1801.1Sabs[NBD] NetBSD Project, The. 1811.1Sabs[OBD] OpenBSD Project, The. 1821.1Sabs[dmr] Dennis Ritchie, via E-Mail 1831.7Sitojun[BSDI] Berkeley Software Design, Inc. 1841.1Sabs 1851.1SabsMultics 1965 1861.6SitojunUNIX Summer 1969 1871.1Sabs DEC PDP-7 1881.1SabsFirst Edition 1971-11-03 [QCU] 1891.1Sabs DEC PDP-11/20, Assembler 1901.1SabsSecond Edition 1972-06-12 [QCU] 1911.6Sitojun 10 UNIX installations 1921.1SabsThird Edition 1973-02-xx [QCU] 1931.1Sabs Pipes, 16 installations 1941.1SabsFourth Edition 1973-11-xx [QCU] 1951.1Sabs rewriting in C effected, 1961.1Sabs above 30 installations 1971.1SabsFifth Edition 1974-06-xx [QCU] 1981.1Sabs above 50 installations 1991.1SabsSixth Edition 1975-05-xx [QCU] 2001.1Sabs port to DEC Vax 2011.1SabsSeventh Edition 1979-01-xx [QCU] 2021.6Sitojun first portable UNIX 2031.6SitojunEighth Edition 1985-02-xx [QCU] 2041.1Sabs VAX 11/750, VAX 11/780 [dmr] 2051.1Sabs descended from 4.1c BSD [dmr] 2061.1Sabs descended from 4.1 BSD [44B] 2071.7Sitojun scooping-out and replacement of the character-device 2081.1Sabs and networking part by the streams mechanism 2091.1Sabs 2101.1SabsNinth Edition 1986-09-xx [QCU] 2111.1SabsTenth Edition 1989-10-xx [QCU] 2121.1Sabs 2131.1Sabs1BSD late 1977 2141.1Sabs 1978-03-09 [QCU] 2151.1Sabs PDP-11, Pascal, ex(1) 2161.1Sabs 30 free copies of 1BSD sent out 2171.1Sabs 35 tapes sold for 50 USD [QCU] 2181.1Sabs2BSD mid 1978 [QCU] 2191.1Sabs 75 2BSD tapes shipped 2201.1Sabs2.7.9BSD ?? [SMS] 2211.1Sabs2.8BSD 1981-07-xx [KSJ] 2221.1Sabs 2231.1Sabs2.8.1BSD 1982-01-xx [QCU] 2241.1Sabs set of performance improvements 2251.1Sabs2.9BSD 1983-07-xx [KSJ] 2261.1Sabs2.9.1BSD 1983-11-xx 2271.1Sabs2.9BSD-Seismo 1985-08-xx [SMS] 2281.1Sabs2.10BSD 1987-04-xx [KKK] 2291.1Sabs2.10.1BSD 1989-01-xx [SMS] 2301.1Sabs2.11BSD 1992-02-xx [SMS] 2311.6Sitojun2.11BSD rev #430 1999-12-13 [SMS] 2321.1Sabs 2331.1Sabs32V 1978-1[01]-xx [QCU] 2341.1Sabs3BSD late 1979 [QCU] 2351.1Sabs virtual memory, page replacement, 2361.1Sabs demand paging 2371.1Sabs4.0BSD 1980-10-xx 2381.1Sabs4.1BSD 1981-06-xx 2391.1Sabs4.1aBSD 1982-04-xx 2401.1Sabs alpha release, 100 sites, networking [44B] 2411.1Sabs4.1bBSD internal release, fast filesystem [44B] 2421.1Sabs4.1cBSD late 1982 2431.1Sabs beta release, IPC [44B] 2441.1Sabs4.2BSD 1983-09-xx [QCU] 2451.1Sabs4.3BSD 1986-06-xx [QCU] 2461.1Sabs 1986-04-xx [KB] 2471.1Sabs4.3BSD Tahoe 1988-06-xx [QCU] 2481.1Sabs4.3BSD NET/1 1988-11-xx [QCU] 2491.1Sabs4.3BSD Reno 1990-06-xx [QCU], [DOC] 2501.1Sabs4.3BSD NET/2 1991-06-xx [QCU] 2511.7Sitojun 2521.7SitojunBSD/386 ALPHA 1991-12-xx [BSDI] 2531.7Sitojun first code released to people outside BSDI 2541.1Sabs386BSD 0.0 1992-02-xx [DOC] 2551.7SitojunBSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 2561.7SitojunBSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 2571.7Sitojun386BSD 0.1 1992-07-28 [DOC] 2581.1Sabs4.4BSD Alpha 1992-07-07 2591.7SitojunBSD/386 0.9.3 1992-10-xx [BSDI] 2601.7Sitojun first external gamma; G customers 2611.7SitojunBSD/386 0.9.4 1992-12-xx [BSDI] 2621.7Sitojun would have been 1.0 except for request 2631.7Sitojun for preliminary injunction 2641.7SitojunBSD/386 1.0 1993-03-xx [BSDI] 2651.7Sitojun injunction denied; first official release 2661.6SitojunNetBSD 0.8 1993-04-20 [NBD] 2671.1Sabs4.4BSD 1993-06-01 [USE] 2681.1SabsNetBSD 0.9 1993-08-23 [NBD] 2691.8SitojunFreeBSD 1.0 1993-11-01 [FBD] 2701.7SitojunBSD/386 1.1 1994-02-xx [BSDI] 2711.1Sabs4.4BSD Lite 1994-03-01 [USE] 2721.6SitojunFreeBSD 1.1 1994-04-xx [FBD] 2731.6SitojunFreeBSD 1.1.5.1 1994-07-xx [FBD] 2741.6Sitojun supersedes 1.1.5 3 days after release. 2751.6SitojunNetBSD 1.0 1994-10-26 [NBD] 2761.1Sabs386BSD 1.0 1994-11-12 [USE] 2771.6SitojunFreeBSD 2.0 1995-01-xx [FBD] 2781.7SitojunBSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 2791.7SitojunFreeBSD 2.0.5 1995-06-10 [FBD] 2801.7SitojunBSD/OS 2.0.1 1995-06-xx [BSDI] 2811.6Sitojun4.4BSD Lite Release 2 1995-06-xx [44B] 2821.6Sitojun the true final distribution from the CSRG 2831.7SitojunFreeBSD 2.1.0 1995-11-19 [FBD] 2841.1SabsNetBSD 1.1 1995-11-26 [NBD] 2851.7SitojunBSD/OS 2.1 1996-01-xx [BSDI] 2861.7SitojunFreeBSD 2.1.5 1996-07-14 [FBD] 2871.1SabsNetBSD 1.2 1996-10-04 [NBD] 2881.1SabsOpenBSD 2.0 1996-10-18 [OBD] 2891.7SitojunFreeBSD 2.1.6 1996-11-16 [FBD] 2901.7SitojunFreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 2911.11SitojunRhapsody 1997-xx-xx 2921.7SitojunFreeBSD 2.1.7 1997-02-20 [FBD] 2931.7SitojunBSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 2941.7SitojunFreeBSD 2.2.0 1997-03-16 [FBD] 2951.7SitojunFreeBSD 2.2.1 1997-03-25 [FBD] 2961.7SitojunFreeBSD 2.2.2 1997-05-16 [FBD] 2971.6SitojunNetBSD 1.2.1 1997-05-20 [NBD] (patch release) 2981.1SabsOpenBSD 2.1 1997-06-01 [OBD] 2991.7SitojunFreeBSD 2.2.5 1997-10-22 [FBD] 3001.1SabsOpenBSD 2.2 1997-12-01 [OBD] 3011.5SabsNetBSD 1.3 1998-01-04 [NBD] 3021.7SitojunFreeBSD 2.2.6 1998-03-25 [FBD] 3031.6SitojunNetBSD 1.3.1 1998-03-09 [NBD] (patch release) 3041.7SitojunBSD/OS 3.1 1998-03-xx [BSDI] 3051.1SabsOpenBSD 2.3 1998-05-19 [OBD] 3061.6SitojunNetBSD 1.3.2 1998-05-29 [NBD] (patch release) 3071.7SitojunFreeBSD 2.2.7 1998-07-22 [FBD] 3081.7SitojunBSD/OS 4.0 1998-08-xx [BSDI] 3091.7Sitojun 2-lock MP support, ELF executables 3101.6SitojunFreeBSD 3.0 1998-10-16 [FBD] 3111.7Sitojun FreeBSD-3.0 is a snapshot from -current, 3121.7Sitojun while 3.1 and 3.2 are from 3.x-stable which 3131.6Sitojun was branched quite some time after 3.0-release 3141.1SabsFreeBSD 2.2.8 1998-11-29 [FBD] 3151.1SabsOpenBSD 2.4 1998-12-01 [OBD] 3161.6SitojunNetBSD 1.3.3 1998-12-23 [NBD] (patch release) 3171.6SitojunFreeBSD 3.1 1999-02-15 [FBD] 3181.7SitojunBSD/OS 4.0.1 1999-03-xx [BSDI] 3191.4SabsNetBSD 1.4 1999-05-12 [NBD] 3201.6SitojunFreeBSD 3.2 1999-05-17 [FBD] 3211.4SabsOpenBSD 2.5 1999-05-19 [OBD] 3221.6SitojunNetBSD 1.4.1 1999-08-26 [NBD] (patch release) 3231.6SitojunFreeBSD 3.3 1999-09-17 [FBD] 3241.6SitojunOpenBSD 2.6 1999-12-01 [OBD] 3251.6SitojunFreeBSD 3.4 1999-12-20 [FBD] 3261.7SitojunBSD/OS 4.1 1999-12-xx [BSDI] 3271.6SitojunFreeBSD 4.0 2000-03-13 [FBD] 3281.6SitojunNetBSD 1.4.2 2000-03-19 [NBD] (patch release) 3291.6SitojunOpenBSD 2.7 2000-06-15 [OBD] 3301.6SitojunFreeBSD 3.5 2000-06-24 [FBD] 3311.6SitojunFreeBSD 4.1 2000-07-27 [FBD] 3321.6SitojunFreeBSD 3.5.1 2000-07-28 [FBD] 3331.6SitojunFreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 3341.7SitojunFreeBSD 4.2 2000-11-21 [FBD] 3351.7SitojunNetBSD 1.4.3 2000-11-25 [NBD] (patch release) 3361.7SitojunBSD/OS 4.2 2000-11-29 [BSDI] 3371.7SitojunOpenBSD 2.8 2000-12-01 [OBD] 3381.7SitojunNetBSD 1.5 2000-12-06 [NBD] 3391.11SitojunMac OS X 10.0 2001-03-24 [APL] 3401.8SitojunFreeBSD 4.3 2001-04-20 [FBD] 3411.8SitojunOpenBSD 2.9 2001-06-01 [OBD] 3421.11SitojunNetBSD 1.5.1 2001-07-11 [NBD] (patch release) 3431.11SitojunNetBSD 1.5.2 2001-09-13 [NBD] (patch release) 3441.12SgrantNetBSD 1.5.3 2002-07-22 [NBD] (patch release) 3451.11SitojunFreeBSD 4.4 2001-09-18 [FBD] 3461.11SitojunMac OS X 10.1 2001-09-xx [APL] 3471.1Sabs 3481.1Sabs 3491.1SabsBibliography 3501.1Sabs------------------------ 3511.1Sabs 3521.1SabsLeffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 3531.1SabsQuarterman. The Design and Implementation of the 4.3BSD UNIX Operating 3541.1SabsSystem. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 3551.1Sabs 3561.1SabsSalus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 3571.1SabsCompany, Inc., 1994. ISBN 0-201-54777-5 3581.1Sabs 3591.1SabsMcKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 3601.1SabsQuarterman. The Design and Implementation of the 4.4BSD Operating 3611.1SabsSystem. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 3621.1Sabs 3631.1SabsDoug McIlroy. Research Unix Reader. 3641.1Sabs 3651.1SabsMichael G. Brown. The Role of BSD in the Development of Unix. 3661.1SabsPresented to the Tasmanian Unix Special Interest Group of the 3671.1SabsAustralian Computer Society, Hobart, August 1993. 3681.1Sabs 3691.6SitojunPeter H. Salus. Unix at 25. Byte Magazine, October 1994. 3701.9SitojunURL: http://www.byte.com/art/9410/sec8/art3.htm (unreachable) 3711.1Sabs 3721.1SabsAndreas Klemm, Lars K�ller. If you're going to San Francisco ... 3731.1SabsDie freien BSD-Varianten von Unix. c't April 1997, page 368ff. 3741.1Sabs 3751.1SabsBSD Release Announcements collection. 3761.6SitojunURL: http://www.de.FreeBSD.org/de/ftp/releases/ 3771.1Sabs 3781.1SabsBSD Hypertext Man Pages 3791.9SitojunURL: http://www.FreeBSD.org/cgi/man.cgi 3801.6Sitojun 3811.6SitojunUNIX history graphing project 3821.9SitojunURL: http://minnie.tuhs.org/Unix_History/index.html 3831.6Sitojun 3841.6SitojunUNIX history 3851.9SitojunURL: http://perso.wanadoo.fr/levenez/unix/ 3861.1Sabs 3871.8SitojunJames Howard: The BSD Family Tree 3881.9SitojunURL: http://www.daemonnews.org/200104/bsd_family.html 3891.8Sitojun("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 3901.8Sitojun 3911.8Sitojun 3921.1SabsAcknowledgments 3931.1Sabs--------------- 3941.1Sabs 3951.6SitojunJosh Gilliam for suggestions, bug fixes, and finding very old 3961.1Sabsoriginal BSD announcements from Usenet or tapes. 3971.1Sabs 3981.1SabsSteven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 3991.1Sabs 4001.1Sabs-- 4011.8SitojunCopyright (c) 1997-2001 Wolfram Schneider <wosch@FreeBSD.ORG> 4021.7SitojunURL: ftp://ftp.freebsd.org/pub/FreeBSD/branches/-current/src/share/misc/bsd-family-tree 4031.1Sabs 4041.11Sitojun$FreeBSD: src/share/misc/bsd-family-tree,v 1.52 2001/09/28 17:18:10 wosch Exp $ 4051.12Sgrant$NetBSD: bsd-family-tree,v 1.12 2002/07/23 06:53:35 grant Exp $ 406