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bsd-family-tree revision 1.44
      1   1.6    itojun The UNIX system family tree: Research and BSD
      2   1.6    itojun ---------------------------------------------
      3   1.1       abs 
      4   1.1       abs First Edition (V1)
      5   1.1       abs      |
      6   1.1       abs Second Edition (V2)
      7   1.1       abs      |
      8   1.1       abs Third Edition (V3)
      9   1.1       abs      |
     10   1.1       abs Fourth Edition (V4)
     11   1.1       abs      |
     12   1.1       abs Fifth Edition (V5)
     13   1.1       abs      |
     14   1.1       abs Sixth Edition (V6) -----*
     15   1.1       abs        \                |
     16   1.1       abs         \               |
     17   1.1       abs          \              |
     18   1.1       abs Seventh Edition (V7)    |
     19   1.1       abs             \           |
     20   1.1       abs              \        1BSD
     21   1.1       abs              32V        |
     22   1.1       abs                \      2BSD---------------*
     23   1.1       abs                 \    /                   |
     24   1.1       abs                  \  /                    |
     25   1.1       abs                   \/                     |
     26   1.1       abs                  3BSD                    |
     27   1.1       abs                   |                      |
     28  1.43   hubertf                4.0BSD                2.79BSD
     29   1.1       abs                   |                      |
     30   1.6    itojun                4.1BSD --------------> 2.8BSD
     31   1.6    itojun                   |                      |
     32   1.6    itojun               4.1aBSD -----------\       |
     33   1.6    itojun                   |                \     |
     34   1.6    itojun               4.1bBSD                \   |
     35   1.6    itojun                   |                    \ |
     36   1.6    itojun       *------ 4.1cBSD --------------> 2.9BSD
     37   1.6    itojun      /            |                      |
     38   1.6    itojun Eighth Edition    |                   2.9BSD-Seismo
     39   1.1       abs      |            |                      |
     40   1.1       abs      +----<--- 4.2BSD               2.9.1BSD
     41   1.1       abs      |            |                      |
     42   1.1       abs      +----<--- 4.3BSD -------------> 2.10BSD
     43   1.1       abs      |            |               /      |
     44   1.1       abs Ninth Edition     |              / 2.10.1BSD
     45   1.1       abs      |         4.3BSD Tahoe-----+        |
     46   1.1       abs      |            |              \       |
     47   1.1       abs      |            |                \     |
     48   1.1       abs      v            |                  2.11BSD
     49   1.1       abs Tenth Edition     |                      |
     50   1.6    itojun                   |                  2.11BSD rev #430
     51   1.1       abs                4.3BSD NET/1              |
     52   1.1       abs                   |                      v
     53   1.1       abs                4.3BSD Reno
     54   1.1       abs                   |
     55   1.1       abs    *---------- 4.3BSD NET/2 -------------------+-------------*
     56   1.1       abs    |                    |                      |             |
     57   1.7    itojun 386BSD 0.0              |                      |           BSD/386 ALPHA
     58   1.1       abs    |                    |                      |             |
     59   1.7    itojun 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
     60   1.1       abs    |     \              |                  4.4BSD Alpha      |
     61   1.7    itojun    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
     62   1.1       abs    |                    |                  4.4BSD            |
     63   1.1       abs    |                    |                    / |             |
     64   1.1       abs    |                    |   4.4BSD-Encumbered  |             |
     65  1.43   hubertf    |                 NetBSD 0.8                |           BSD/386 1.0
     66  1.43   hubertf    |                    |                      |             |
     67  1.43   hubertf FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
     68   1.7    itojun    |                    |           .----- 4.4BSD Lite       |
     69   1.7    itojun FreeBSD 1.1             |          /   /       |     \       |
     70   1.7    itojun    |                    |         /   /        |      \      |
     71   1.7    itojun FreeBSD 1.1.5       .---|--------'   /         |       \     |
     72   1.7    itojun    |               /    |           /          |        \    |
     73   1.7    itojun FreeBSD 1.1.5.1   /     |          /           |         \   |
     74   1.7    itojun    |             /   NetBSD 1.0 <-'            |          \  |
     75   1.7    itojun    |            /       |                      |           \ |
     76   1.7    itojun FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
     77   1.7    itojun    |                     \                     |             |
     78   1.7    itojun FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
     79  1.11    itojun    |                 .-----\------------- 4.4BSD Lite2       |
     80  1.11    itojun    |                 |      \             |  |   |   |       |
     81  1.11    itojun    |                 | .-----|------Rhapsody |   |   |       |
     82  1.11    itojun    |                 | |     |        NetBSD 1.3 |   |       |
     83  1.11    itojun    |                 | |     |           OpenBSD 2.3 |       |
     84  1.11    itojun    |                 | |     |                BSD/OS 3.0     |
     85  1.11    itojun FreeBSD 2.1          | |     |                               |
     86  1.11    itojun  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
     87  1.11    itojun  | FreeBSD 2.1.5     | |     |              \                |
     88  1.11    itojun  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
     89  1.11    itojun  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
     90  1.11    itojun  |     |             | |     |   \             |             |
     91  1.11    itojun  | FreeBSD 2.1.6.1   | |     |    \            |             |
     92  1.11    itojun  |     |             | |     |     \           |             |
     93  1.11    itojun  | FreeBSD 2.1.7     | |     |      |          |             |
     94  1.11    itojun  |     |             | |     |  NetBSD 1.2.1   |             |
     95  1.11    itojun  | FreeBSD 2.1.7.1   | |     |                 |             |
     96  1.11    itojun  |                   | |     |                 |             |
     97  1.11    itojun  |                   | |     |                 |             |
     98  1.11    itojun  *-FreeBSD 2.2       | |     |                 |             |
     99  1.11    itojun  |        \          | |     |                 |             |
    100  1.11    itojun  |     FreeBSD 2.2.1 | |     |                 |             |
    101  1.11    itojun  |         |         | |     |                 |             |
    102  1.11    itojun  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
    103  1.11    itojun  |         |         | |     |                 |             |
    104  1.11    itojun  |     FreeBSD 2.2.5 | |     |                 |             |
    105  1.11    itojun  |         |         | |     |             OpenBSD 2.2       |
    106  1.11    itojun  |         |         | |  NetBSD 1.3           |             |
    107  1.11    itojun  |     FreeBSD 2.2.6 | |     |    |            |             |
    108  1.11    itojun  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
    109  1.11    itojun  |         |         | |     |    |        OpenBSD 2.3       |
    110  1.11    itojun  |         |         | |     | NetBSD 1.3.2    |             |
    111  1.11    itojun  |     FreeBSD 2.2.7 | |     |    |            |             |
    112  1.11    itojun  |         |         | |     |    |            |           BSD/OS 4.0
    113  1.11    itojun  |         v         | |     |    |            |             |
    114  1.11    itojun  |     FreeBSD 2.2.8 | |     |    |            |             |
    115  1.11    itojun  |                   | |     |    |        OpenBSD 2.4       |
    116  1.11    itojun FreeBSD 3.0 <--------* |     |    v            |             |
    117  1.11    itojun  |                     |     | NetBSD 1.3.3    |             |
    118  1.11    itojun  *---FreeBSD 3.1       |     |                 |             |
    119  1.11    itojun  |       |             |     |                 |           BSD/OS 4.0.1
    120  1.11    itojun  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
    121  1.11    itojun  |       |          |  |  |  |    |            |             |
    122  1.11    itojun  |       |          |  |  |  |    |            |             |
    123  1.11    itojun  |       |          |  |  |  |    |            |             |
    124  1.11    itojun  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
    125  1.11    itojun  |       |          |  |  |  |    |        OpenBSD 2.6       |
    126  1.11    itojun  |   FreeBSD 3.4    |  |  |  |    |            |             |
    127  1.11    itojun  |           |      |  |  |  |    |            |           BSD/OS 4.1
    128  1.11    itojun FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
    129  1.11    itojun  |           |      |  |  |  |    |            |             |
    130  1.11    itojun  |           |      |  |  |  |    |            |             |
    131  1.11    itojun  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
    132  1.11    itojun  |           |      |  |  |  |    |            |             |
    133  1.11    itojun  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
    134  1.11    itojun  |                  |  |  |  |    |            |             |
    135  1.11    itojun  *---FreeBSD 4.1    |  |  |  |    |            |             |
    136  1.11    itojun  |      |           |  | (?) |    |            |             |
    137  1.11    itojun  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
    138  1.16  junyoung  |      |           |  | /   |    |            |             |
    139  1.11    itojun  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
    140  1.25      soda  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
    141  1.25      soda  |      |             |      |                 |             |
    142  1.13  junyoung  |      |             |      |                 |             |
    143  1.11    itojun  |      |           10.0  NetBSD 1.5           |             |
    144  1.17  junyoung  |   FreeBSD 4.3      |      |    |            |             |
    145  1.17  junyoung  |      |             |      |    |        OpenBSD 2.9       |
    146  1.17  junyoung  |      |             |      | NetBSD 1.5.1    |             |
    147  1.17  junyoung  |      |             |      |    |            |             |
    148  1.17  junyoung  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
    149  1.17  junyoung  |      |        | Mac OS X  |    |            |             |
    150  1.17  junyoung  |      |        |   10.1    |    |        OpenBSD 3.0       |
    151  1.17  junyoung  |   FreeBSD 4.5 |    |      |    |            |             |
    152  1.17  junyoung  |      |         \   |      |    |            |           BSD/OS 4.3
    153  1.17  junyoung  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
    154  1.43   hubertf  |      |           \ |      | NetBSD 1.5.3    |             |
    155  1.25      soda  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
    156  1.25      soda  |      |            10.2    |                 |             |
    157  1.21      cjep  |   FreeBSD 4.7      |      |                 |             |
    158  1.21      cjep  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
    159  1.21      cjep  |   FreeBSD 4.8      |      |    |            |             |
    160  1.21      cjep  |      |             |      | NetBSD 1.6.1    |             |
    161  1.23     peter  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
    162  1.23     peter  |      |         \   |      |    |            |             |
    163  1.23     peter  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
    164  1.23     peter  |      |          |  |      |    |            |
    165  1.23     peter  |      |          |  |      | NetBSD 1.6.2    |
    166  1.23     peter  |      |          |  |      |    |            |
    167  1.23     peter  |      |          |  |      |    |        OpenBSD 3.5
    168  1.23     peter  |      |          |  |      |    v            |
    169  1.23     peter  |   FreeBSD 4.10  |  |      |                 |
    170  1.23     peter  |      |          |  |      |                 |
    171  1.23     peter  |   FreeBSD 4.11  |  |      |                 |
    172  1.42   hubertf  |                 |  |      |                 |
    173  1.42   hubertf  |                  `-|------|-----------------|---------------------.
    174  1.23     peter  |                    |      |                 |                      \
    175  1.23     peter FreeBSD 5.0           |      |                 |                       |
    176  1.23     peter  |                    |      |                 |                       |
    177  1.40   xtraeme FreeBSD 5.1           |      |                 |                 DragonFly 1.0
    178  1.23     peter  |          \         |      |                 |                       |
    179  1.23     peter  |           ----- Mac OS X  |                 |                       |
    180  1.23     peter  |                   10.3    |                 |                       |
    181  1.23     peter FreeBSD 5.2           |      |                 |                       |
    182  1.23     peter  |      |             |      |                 |                       |
    183  1.23     peter  |   FreeBSD 5.2.1    |      |                 |                       |
    184  1.23     peter  |                    |      |                 |                       |
    185  1.35    rpaulo  *-------FreeBSD 5.3  |      |                 |                       |
    186  1.35    rpaulo  |           |        |      |             OpenBSD 3.6                 |
    187  1.35    rpaulo  |           |        |   NetBSD 2.0           |                       |
    188  1.40   xtraeme  |           |        |      | |  |            |                DragonFly 1.2.0
    189  1.35    rpaulo  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
    190  1.35    rpaulo  |           |       10.4    | |  |            |                       |
    191  1.35    rpaulo  |       FreeBSD 5.4  |      | |  |            |                       |
    192  1.35    rpaulo  |           |        |      | |  |        OpenBSD 3.7                 |
    193  1.35    rpaulo  |           |        |      | | NetBSD 2.0.3  |                       |
    194  1.35    rpaulo  |           |        |      | |  |            |                       |
    195  1.35    rpaulo  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
    196  1.35    rpaulo  |    6.0    |        |      | |               |                       |
    197  1.35    rpaulo  |     |     |        |      |  \              |                       |
    198  1.35    rpaulo  |     |     |        |      | NetBSD 2.1      |                       |
    199  1.35    rpaulo  |     |     |        |      |                 |                       |
    200  1.35    rpaulo  |     |     |        |   NetBSD 3.0           |                       |
    201  1.40   xtraeme  |     |     |        |      | |  |            |                DragonFly 1.4.0
    202  1.38    rpaulo  |     |     |        |      | |  |        OpenBSD 3.9                 |
    203  1.38    rpaulo  |  FreeBSD  |        |      | |  |            |                       |
    204  1.38    rpaulo  |    6.1    |        |      | |  |            |                       |
    205  1.38    rpaulo  |     |  FreeBSD 5.5 |      | |  |            |                       |
    206  1.40   xtraeme  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
    207  1.38    rpaulo  |     |              |      | |  |            |                       |
    208  1.39    rpaulo  |     |              |      | |  |        OpenBSD 4.0                 |
    209  1.39    rpaulo  |     |              |      | | NetBSD 3.0.2  |                       |
    210  1.39    rpaulo  |     |              |      | NetBSD 3.1      |                       |
    211  1.39    rpaulo  | FreeBSD 6.2        |      |                 |                       |
    212  1.40   xtraeme  |     |              |      |                 |                DragonFly 1.8.0
    213  1.40   xtraeme  |     |              |      |             OpenBSD 4.1                 |
    214  1.40   xtraeme  |     |              |      |                 |                DragonFly 1.10.0
    215  1.42   hubertf  |     |           Mac OS X  |                 |                       |
    216  1.42   hubertf  |     |             10.5    |                 |                       |
    217  1.40   xtraeme  |     |              |      |             OpenBSD 4.2                 |
    218  1.42   hubertf  |     |              |   NetBSD 4.0           |                       |
    219  1.42   hubertf  | FreeBSD 6.3        |      |                 |                       |
    220  1.42   hubertf  |            \       |      |                 |                       |
    221  1.42   hubertf  *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
    222  1.42   hubertf  |    7.0      |      |      |                 |                       |
    223  1.42   hubertf  |     |       |      |      |             OpenBSD 4.3                 |
    224  1.42   hubertf  |     |       |      |      |                 |                DragonFly 2.0.0
    225  1.42   hubertf  |     |    FreeBSD   |      |             OpenBSD 4.4                 |
    226  1.42   hubertf  |     |      6.4     |      |                 |                       |
    227  1.42   hubertf  |     |              |      |                 |                       |
    228  1.42   hubertf  |  FreeBSD 7.1       |      |                 |                       |
    229  1.43   hubertf  |     |              |      |                 |                DragonFly 2.2.0
    230  1.43   hubertf  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
    231  1.43   hubertf  |             \      |      |    |            |                       |
    232  1.43   hubertf  |              |  Mac OS X  |    |            |                       |
    233  1.43   hubertf  |              |    10.6    |    |            |                       |
    234  1.43   hubertf  |              |     |      |    |            |                DragonFly 2.4.0
    235  1.43   hubertf  |              |     |      |    |        OpenBSD 4.6                 |
    236  1.43   hubertf  |              |     |      |    |            |                       |
    237  1.43   hubertf  *--FreeBSD     |     |      |    |            |                       |
    238  1.43   hubertf  |    8.0       |     |      |    |            |                       |
    239  1.43   hubertf  |     |     FreeBSD  |      |    |            |                       |
    240  1.43   hubertf  |     |       7.3    |      |    |            |                DragonFly 2.6.0
    241  1.43   hubertf  |     |        |     |      |    |        OpenBSD 4.7                 |
    242  1.43   hubertf  |  FreeBSD     |     |      |    |            |                       |
    243  1.43   hubertf  |    8.1       |     |      |    |            |                       |
    244  1.43   hubertf  |     |        |     |      |    |            |                DragonFly 2.8.2
    245  1.43   hubertf  |     |        |     |      |    |        OpenBSD 4.8                 |
    246  1.43   hubertf  |     |        |     |      | NetBSD 5.1      |                       |
    247  1.43   hubertf  |  FreeBSD  FreeBSD  |      |                 |                       |
    248  1.43   hubertf  |    8.2      7.4    |      |                 |               DragonFly 2.10.1
    249  1.43   hubertf  |     v              |      |             OpenBSD 4.9                 |
    250  1.43   hubertf  |                 Mac OS X  |                 |                       |
    251  1.43   hubertf  |                   10.7    |                 |                       |
    252  1.43   hubertf  |                    |      |             OpenBSD 5.0                 |
    253  1.43   hubertf  +--FreeBSD           |      |                 |                       |
    254  1.44     ryoon  |    9.0             |      |                 |               DragonFly 3.0.1
    255  1.43   hubertf  |     v              |      |                 |                       |
    256  1.42   hubertf  |                    |      |                 |                       |
    257  1.43   hubertf FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
    258  1.23     peter  |                    |      |                 |                       |
    259  1.23     peter  v                    v      v                 v                       v
    260   1.1       abs 
    261   1.1       abs Time
    262   1.1       abs ----------------
    263   1.1       abs 
    264   1.7    itojun Time tolerance +/- 6 months, depending on which book/article you read; if it
    265   1.7    itojun was the announcement in Usenet or if it was available as tape.
    266   1.1       abs 
    267   1.1       abs [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
    268   1.1       abs 	and John Quarterman. The Design and Implementation of
    269   1.1       abs 	the 4.4BSD Operating System.
    270  1.11    itojun [APL] Apple website [http://www.apple.com/macosx/]
    271  1.17  junyoung [BSDI] Berkeley Software Design, Inc.
    272  1.24      soda [DFB] DragonFlyBSD Project, The.
    273   1.1       abs [DOC] README, COPYRIGHT on tape.
    274  1.17  junyoung [FBD] FreeBSD Project, The.
    275   1.1       abs [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
    276   1.1       abs 	Volume 11, Info 4, April, 1987.
    277   1.1       abs [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
    278   1.1       abs 	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
    279  1.17  junyoung [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
    280  1.17  junyoung 	Changes in the Kernel in 2.9BSD. Second Berkeley Software
    281  1.17  junyoung 	Distribution UNIX Version 2.9, July, 1983.
    282   1.1       abs [NBD] NetBSD Project, The.
    283   1.1       abs [OBD] OpenBSD Project, The.
    284  1.17  junyoung [QCU] Salus, Peter H. A quarter century of UNIX.
    285  1.17  junyoung [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
    286  1.43   hubertf [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
    287  1.17  junyoung [USE] Usenet announcement.
    288  1.17  junyoung [WRS] Wind River Systems, Inc.
    289   1.1       abs [dmr] Dennis Ritchie, via E-Mail
    290   1.1       abs 
    291   1.1       abs Multics                 1965
    292   1.6    itojun UNIX                    Summer 1969
    293   1.1       abs 				DEC PDP-7
    294   1.1       abs First   Edition         1971-11-03 [QCU]
    295   1.1       abs 				DEC PDP-11/20, Assembler
    296   1.1       abs Second  Edition         1972-06-12 [QCU]
    297   1.6    itojun 				10 UNIX installations
    298   1.1       abs Third   Edition         1973-02-xx [QCU]
    299   1.1       abs 				Pipes, 16 installations
    300   1.1       abs Fourth  Edition         1973-11-xx [QCU]
    301   1.1       abs 				rewriting in C effected,
    302   1.1       abs                                 above 30 installations
    303   1.1       abs Fifth   Edition         1974-06-xx [QCU]
    304   1.1       abs 				above 50 installations
    305   1.1       abs Sixth   Edition         1975-05-xx [QCU]
    306   1.1       abs 				port to DEC Vax
    307   1.1       abs Seventh Edition         1979-01-xx [QCU]
    308   1.6    itojun 				first portable UNIX
    309   1.6    itojun Eighth  Edition         1985-02-xx [QCU]
    310   1.1       abs 				VAX 11/750, VAX 11/780 [dmr]
    311   1.1       abs 				descended from 4.1c BSD [dmr]
    312   1.1       abs 				descended from 4.1 BSD [44B]
    313   1.7    itojun 			scooping-out and replacement of the character-device
    314   1.1       abs 			and networking part by the streams mechanism
    315   1.1       abs 
    316   1.1       abs Ninth   Edition         1986-09-xx [QCU]
    317   1.1       abs Tenth   Edition         1989-10-xx [QCU]
    318   1.1       abs 
    319   1.1       abs 1BSD                    late 1977
    320   1.1       abs 			1978-03-09 [QCU]
    321   1.1       abs 				PDP-11, Pascal, ex(1)
    322   1.1       abs 				30 free copies of 1BSD sent out
    323   1.1       abs 				35 tapes sold for 50 USD [QCU]
    324  1.43   hubertf 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
    325   1.1       abs 				75 2BSD tapes shipped
    326  1.43   hubertf 2.79BSD			1980-04-xx [TUHS]
    327   1.1       abs 2.8BSD			1981-07-xx [KSJ]
    328   1.1       abs 
    329   1.1       abs 2.8.1BSD		1982-01-xx [QCU]
    330   1.1       abs 				set of performance improvements
    331   1.1       abs 2.9BSD			1983-07-xx [KSJ]
    332  1.43   hubertf 2.9.1BSD                1983-11-xx [TUHS]
    333   1.1       abs 2.9BSD-Seismo		1985-08-xx [SMS]
    334   1.1       abs 2.10BSD			1987-04-xx [KKK]
    335   1.1       abs 2.10.1BSD		1989-01-xx [SMS]
    336   1.1       abs 2.11BSD			1992-02-xx [SMS]
    337   1.6    itojun 2.11BSD rev #430	1999-12-13 [SMS]
    338   1.1       abs 
    339   1.1       abs 32V			1978-1[01]-xx [QCU]
    340  1.43   hubertf 3BSD                    late 1979 [QCU] March 1980 [TUHS]
    341   1.1       abs 				virtual memory, page replacement,
    342   1.1       abs                         	demand paging
    343   1.1       abs 4.0BSD                  1980-10-xx
    344  1.13  junyoung 4.1BSD                  1981-07-08 [DOC]
    345   1.1       abs 4.1aBSD                 1982-04-xx
    346   1.1       abs 				alpha release, 100 sites, networking [44B]
    347   1.1       abs 4.1bBSD				internal release, fast filesystem [44B]
    348   1.1       abs 4.1cBSD                 late 1982
    349   1.1       abs 				beta release, IPC [44B]
    350   1.1       abs 4.2BSD                  1983-09-xx [QCU]
    351  1.13  junyoung                         1983-08-03 [DOC]
    352   1.1       abs 4.3BSD                  1986-06-xx [QCU]
    353  1.13  junyoung 			1986-04-05 [KB], [DOC]
    354  1.13  junyoung 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
    355   1.1       abs 4.3BSD NET/1            1988-11-xx [QCU]
    356  1.13  junyoung                         1989-01-01 [DOC]
    357  1.13  junyoung 4.3BSD Reno             1990-06-29 [QCU], [DOC]
    358  1.13  junyoung 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
    359   1.7    itojun 
    360   1.7    itojun BSD/386 ALPHA		1991-12-xx [BSDI]
    361   1.7    itojun 				first code released to people outside BSDI
    362   1.1       abs 386BSD 0.0              1992-02-xx [DOC]
    363   1.7    itojun BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
    364   1.7    itojun BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
    365   1.7    itojun 386BSD 0.1              1992-07-28 [DOC]
    366   1.1       abs 4.4BSD Alpha            1992-07-07
    367   1.7    itojun BSD/386 0.9.3		1992-10-xx [BSDI]
    368   1.7    itojun 				first external gamma; G customers
    369   1.7    itojun BSD/386 0.9.4		1992-12-xx [BSDI]
    370   1.7    itojun 				would have been 1.0 except for request
    371   1.7    itojun 				for preliminary injunction
    372   1.7    itojun BSD/386 1.0 		1993-03-xx [BSDI]
    373   1.7    itojun 				injunction denied; first official release
    374   1.6    itojun NetBSD 0.8              1993-04-20 [NBD]
    375   1.1       abs 4.4BSD                  1993-06-01 [USE]
    376   1.1       abs NetBSD 0.9              1993-08-23 [NBD]
    377   1.8    itojun FreeBSD 1.0		1993-11-01 [FBD]
    378  1.40   xtraeme FreeBSD 1.0.2		1993-11-14 [FBD]
    379  1.40   xtraeme 				supersedes 1.0 13 days after release.
    380   1.7    itojun BSD/386 1.1		1994-02-xx [BSDI]
    381   1.1       abs 4.4BSD Lite             1994-03-01 [USE]
    382  1.24      soda FreeBSD 1.1		1994-05-07 [FBD]
    383  1.24      soda FreeBSD 1.1.5		1994-06-30 [FBD]
    384  1.24      soda FreeBSD 1.1.5.1		1994-07-05 [FBD]
    385  1.24      soda 				supersedes 1.1.5 5 days after release.
    386   1.6    itojun NetBSD 1.0              1994-10-26 [NBD]
    387   1.1       abs 386BSD 1.0              1994-11-12 [USE]
    388  1.24      soda FreeBSD 2.0		1994-11-23 [FBD]
    389   1.7    itojun BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
    390   1.7    itojun FreeBSD 2.0.5		1995-06-10 [FBD]
    391   1.7    itojun BSD/OS 2.0.1		1995-06-xx [BSDI]
    392   1.6    itojun 4.4BSD Lite Release 2	1995-06-xx [44B]
    393   1.6    itojun 				the true final distribution from the CSRG
    394   1.7    itojun FreeBSD 2.1.0		1995-11-19 [FBD]
    395   1.1       abs NetBSD 1.1              1995-11-26 [NBD]
    396   1.7    itojun BSD/OS 2.1		1996-01-xx [BSDI]
    397   1.7    itojun FreeBSD 2.1.5		1996-07-14 [FBD]
    398   1.1       abs NetBSD 1.2              1996-10-04 [NBD]
    399   1.1       abs OpenBSD 2.0             1996-10-18 [OBD]
    400   1.7    itojun FreeBSD 2.1.6		1996-11-16 [FBD]
    401   1.7    itojun FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
    402  1.11    itojun Rhapsody		1997-xx-xx
    403   1.7    itojun FreeBSD 2.1.7		1997-02-20 [FBD]
    404   1.7    itojun BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
    405   1.7    itojun FreeBSD 2.2.0		1997-03-16 [FBD]
    406   1.7    itojun FreeBSD 2.2.1		1997-03-25 [FBD]
    407   1.7    itojun FreeBSD 2.2.2		1997-05-16 [FBD]
    408   1.6    itojun NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
    409   1.1       abs OpenBSD 2.1             1997-06-01 [OBD]
    410   1.7    itojun FreeBSD 2.2.5		1997-10-22 [FBD]
    411   1.1       abs OpenBSD 2.2             1997-12-01 [OBD]
    412   1.5       abs NetBSD 1.3              1998-01-04 [NBD]
    413   1.7    itojun FreeBSD 2.2.6		1998-03-25 [FBD]
    414   1.6    itojun NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
    415   1.7    itojun BSD/OS 3.1		1998-03-xx [BSDI]
    416   1.1       abs OpenBSD 2.3             1998-05-19 [OBD]
    417   1.6    itojun NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
    418   1.7    itojun FreeBSD 2.2.7		1998-07-22 [FBD]
    419   1.7    itojun BSD/OS 4.0		1998-08-xx [BSDI]
    420   1.7    itojun 				2-lock MP support, ELF executables
    421   1.6    itojun FreeBSD 3.0		1998-10-16 [FBD]
    422   1.7    itojun 				FreeBSD-3.0 is a snapshot from -current,
    423   1.7    itojun 				while 3.1 and 3.2 are from 3.x-stable which
    424   1.6    itojun 				was branched quite some time after 3.0-release
    425   1.1       abs FreeBSD 2.2.8           1998-11-29 [FBD]
    426   1.1       abs OpenBSD 2.4             1998-12-01 [OBD]
    427   1.6    itojun NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
    428   1.6    itojun FreeBSD 3.1		1999-02-15 [FBD]
    429   1.7    itojun BSD/OS 4.0.1		1999-03-xx [BSDI]
    430   1.4       abs NetBSD 1.4              1999-05-12 [NBD]
    431   1.6    itojun FreeBSD 3.2             1999-05-17 [FBD]
    432   1.4       abs OpenBSD 2.5             1999-05-19 [OBD]
    433   1.6    itojun NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
    434   1.6    itojun FreeBSD 3.3             1999-09-17 [FBD]
    435   1.6    itojun OpenBSD 2.6             1999-12-01 [OBD]
    436   1.6    itojun FreeBSD 3.4             1999-12-20 [FBD]
    437   1.7    itojun BSD/OS 4.1		1999-12-xx [BSDI]
    438   1.6    itojun FreeBSD 4.0             2000-03-13 [FBD]
    439   1.6    itojun NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
    440   1.6    itojun OpenBSD 2.7             2000-06-15 [OBD]
    441   1.6    itojun FreeBSD 3.5		2000-06-24 [FBD]
    442   1.6    itojun FreeBSD 4.1		2000-07-27 [FBD]
    443   1.6    itojun FreeBSD 3.5.1		2000-07-28 [FBD]
    444   1.6    itojun FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
    445   1.7    itojun FreeBSD 4.2  		2000-11-21 [FBD]
    446   1.7    itojun NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
    447   1.7    itojun BSD/OS 4.2		2000-11-29 [BSDI]
    448   1.7    itojun OpenBSD 2.8		2000-12-01 [OBD]
    449   1.7    itojun NetBSD 1.5              2000-12-06 [NBD]
    450  1.11    itojun Mac OS X 10.0           2001-03-24 [APL]
    451   1.8    itojun FreeBSD 4.3  		2001-04-20 [FBD]
    452   1.8    itojun OpenBSD 2.9  		2001-06-01 [OBD]
    453  1.11    itojun NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
    454  1.11    itojun NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
    455  1.11    itojun FreeBSD 4.4  		2001-09-18 [FBD]
    456  1.17  junyoung Mac OS X 10.1		2001-09-29 [APL]
    457  1.13  junyoung OpenBSD 3.0		2001-12-01 [OBD]
    458  1.13  junyoung FreeBSD 4.5  		2002-01-29 [FBD]
    459  1.17  junyoung BSD/OS 4.3		2002-03-14 [WRS]
    460  1.17  junyoung OpenBSD 3.1		2002-05-19 [OBD]
    461  1.17  junyoung FreeBSD 4.6  		2002-06-15 [FBD]
    462  1.14  junyoung NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
    463  1.17  junyoung FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
    464  1.17  junyoung Mac OS X 10.2		2002-08-23 [APL]
    465  1.17  junyoung NetBSD 1.6		2002-09-14 [NBD]
    466  1.17  junyoung FreeBSD 4.7		2002-10-08 [FBD]
    467  1.19       wiz OpenBSD 3.2		2002-11-01 [OBD]
    468  1.20    itojun FreeBSD 5.0		2003-01-17 [FBD]
    469  1.20    itojun 				FreeBSD 5.0 is a separate branch off of
    470  1.20    itojun 				-current, similar to 3.0.
    471  1.20    itojun FreeBSD 4.8		2003-04-03 [FBD]
    472  1.20    itojun NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
    473  1.20    itojun OpenBSD 3.3		2003-05-01 [OBD]
    474  1.21      cjep BSD/OS 5.0		2003-05-?? [WRS]
    475  1.21      cjep FreeBSD 5.1		2003-06-09 [FBD]
    476  1.23     peter Mac OS X 10.3		2003-10-24 [APL]
    477  1.23     peter FreeBSD 4.9		2003-10-28 [FBD]
    478  1.23     peter BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
    479  1.23     peter OpenBSD 3.4		2003-11-01 [OBD]
    480  1.23     peter FreeBSD 5.2		2004-01-12 [FBD]
    481  1.23     peter FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
    482  1.23     peter NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
    483  1.23     peter OpenBSD 3.5		2004-04-01 [OBD]
    484  1.23     peter FreeBSD 4.10		2004-05-27 [FBD]
    485  1.24      soda DragonFly 1.0		2004-07-12 [DFB]
    486  1.23     peter OpenBSD 3.6		2004-10-29 [OBD]
    487  1.23     peter FreeBSD 5.3		2004-11-06 [FBD]
    488  1.23     peter NetBSD 2.0		2004-12-09 [NBD]
    489  1.23     peter FreeBSD 4.11		2005-01-25 [FBD]
    490  1.24      soda DragonFly 1.2.0		2005-04-08 [DFB]
    491  1.26      soda NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
    492  1.24      soda Mac OS X 10.4		2005-04-29 [APL]
    493  1.24      soda FreeBSD 5.4		2005-05-09 [FBD]
    494  1.24      soda OpenBSD 3.7		2005-05-19 [OBD]
    495  1.28    rpaulo NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
    496  1.27    rpaulo OpenBSD 3.8		2005-11-01 [OBD]
    497  1.29    rpaulo FreeBSD 6.0		2005-11-01 [FBD]
    498  1.28    rpaulo NetBSD 2.1		2005-11-02 [NBD]
    499  1.30    rpaulo NetBSD 3.0		2005-12-23 [NBD]
    500  1.30    rpaulo DragonFly 1.4.0		2006-01-08 [DFB]
    501  1.34    rpaulo OpenBSD 3.9		2006-05-01 [OBD]
    502  1.35    rpaulo FreeBSD 6.1		2006-05-08 [FBD]
    503  1.35    rpaulo FreeBSD 5.5		2006-05-25 [FBD]
    504  1.36    rpaulo NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
    505  1.37    rpaulo DragonFly 1.6.0		2006-07-24 [DFB]
    506  1.38    rpaulo OpenBSD 4.0		2006-11-01 [OBD]
    507  1.38    rpaulo NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
    508  1.38    rpaulo NetBSD 3.1		2006-11-04 [NBD]
    509  1.39    rpaulo FreeBSD 6.2		2007-01-15 [FBD]
    510  1.39    rpaulo DragonFly 1.8.0		2007-01-30 [DFB]
    511  1.40   xtraeme OpenBSD 4.1		2007-05-01 [OBD]
    512  1.40   xtraeme DragonFly 1.10.0	2007-08-06 [DFB]
    513  1.42   hubertf Mac OS X 10.5		2007-10-26 [APL]
    514  1.40   xtraeme OpenBSD 4.2		2007-11-01 [OBD]
    515  1.42   hubertf NetBSD 4.0		2007-12-19 [NBD]
    516  1.42   hubertf FreeBSD 6.3		2008-01-18 [FBD]
    517  1.42   hubertf DragonFly 1.12.0	2008-02-26 [DFB]
    518  1.42   hubertf FreeBSD 7.0		2008-02-27 [FBD]
    519  1.42   hubertf OpenBSD 4.3		2008-05-01 [OBD]
    520  1.42   hubertf DragonFly 2.0.0		2008-07-21 [DFB]
    521  1.42   hubertf OpenBSD 4.4		2008-11-01 [OBD]
    522  1.42   hubertf FreeBSD 6.4		2008-11-28 [FBD]
    523  1.42   hubertf FreeBSD 7.1		2009-01-04 [FBD]
    524  1.43   hubertf DragonFly 2.2.0		2009-02-17 [DFB]
    525  1.43   hubertf NetBSD 5.0		2009-04-29 [NBD]
    526  1.43   hubertf OpenBSD 4.5		2009-05-01 [OBD]
    527  1.43   hubertf FreeBSD 7.2		2009-05-04 [FBD]
    528  1.43   hubertf Mac OS X 10.6		2009-06-08 [APL]
    529  1.43   hubertf DragonFly 2.4.0		2009-09-16 [DFB]
    530  1.43   hubertf OpenBSD 4.6		2009-10-18 [OBD]
    531  1.43   hubertf FreeBSD 8.0		2009-11-26 [FBD]
    532  1.43   hubertf FreeBSD 7.3		2010-03-23 [FBD]
    533  1.43   hubertf DragonFly 2.6.0		2010-03-28 [DFB]
    534  1.43   hubertf OpenBSD 4.7		2010-05-19 [OBD]
    535  1.43   hubertf FreeBSD 8.1		2010-07-24 [FBD]
    536  1.43   hubertf DragonFly 2.8.2		2010-10-30 [DFB]
    537  1.43   hubertf OpenBSD 4.8		2010-11-01 [OBD]
    538  1.43   hubertf NetBSD 5.1		2010-11-19 [NBD]
    539  1.43   hubertf FreeBSD 7.4		2011-02-24 [FBD]
    540  1.43   hubertf FreeBSD 8.2		2011-02-24 [FBD]
    541  1.43   hubertf DragonFly 2.10.1	2011-04-26 [DFB]
    542  1.43   hubertf OpenBSD 4.9		2011-05-01 [OBD]
    543  1.43   hubertf Mac OS X 10.7		2011-07-20 [APL]
    544  1.43   hubertf OpenBSD 5.0		2011-11-01 [OBD]
    545  1.43   hubertf FreeBSD 9.0		2012-01-12 [FBD]
    546  1.44     ryoon DragonFly 3.0.1		2012-02-21 [DFB]
    547   1.1       abs 
    548   1.1       abs Bibliography
    549   1.1       abs ------------------------
    550   1.1       abs 
    551   1.1       abs Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
    552   1.1       abs Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
    553   1.1       abs System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
    554   1.1       abs 
    555   1.1       abs Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
    556   1.1       abs Company, Inc., 1994. ISBN 0-201-54777-5
    557   1.1       abs 
    558   1.1       abs McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
    559   1.1       abs Quarterman. The Design and Implementation of the 4.4BSD Operating
    560   1.1       abs System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
    561   1.1       abs 
    562  1.23     peter McKusick, Marshall Kirk, George Neville-Neil. The Design and
    563  1.23     peter Implementation of the FreeBSD Operating System.
    564  1.23     peter Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
    565  1.23     peter 
    566   1.1       abs Doug McIlroy. Research Unix Reader.
    567   1.1       abs 
    568   1.1       abs Michael G. Brown. The Role of BSD in the Development of Unix.
    569   1.1       abs Presented to the Tasmanian Unix Special Interest Group of the
    570   1.1       abs Australian Computer Society, Hobart, August 1993.
    571   1.1       abs 
    572   1.6    itojun Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
    573  1.24      soda URL: http://www.byte.com/art/9410/sec8/art3.htm
    574   1.1       abs 
    575  1.43   hubertf Andreas Klemm, Lars Kller. If you're going to San Francisco ...
    576   1.1       abs Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
    577   1.1       abs 
    578   1.1       abs BSD Release Announcements collection.
    579  1.43   hubertf URL: http://www.FreeBSD.org/releases/
    580   1.1       abs 
    581   1.1       abs BSD Hypertext Man Pages
    582   1.9    itojun URL: http://www.FreeBSD.org/cgi/man.cgi
    583   1.6    itojun 
    584   1.6    itojun UNIX history graphing project
    585   1.9    itojun URL: http://minnie.tuhs.org/Unix_History/index.html
    586   1.6    itojun 
    587   1.6    itojun UNIX history
    588  1.17  junyoung URL: http://www.levenez.com/unix/
    589   1.1       abs 
    590   1.8    itojun James Howard: The BSD Family Tree
    591  1.32    rpaulo URL: http://ezine.daemonnews.org/200104/bsd_family.html
    592   1.8    itojun ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
    593   1.8    itojun 
    594   1.8    itojun 
    595   1.1       abs Acknowledgments
    596   1.1       abs ---------------
    597   1.1       abs 
    598   1.6    itojun Josh Gilliam for suggestions, bug fixes, and finding very old
    599   1.1       abs original BSD announcements from Usenet or tapes.
    600   1.1       abs 
    601   1.1       abs Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
    602   1.1       abs 
    603   1.1       abs --
    604  1.43   hubertf Copyright (c) 1997-2012 Wolfram Schneider <wosch (a] FreeBSD.ORG>
    605  1.22    itojun URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
    606   1.1       abs 
    607  1.44     ryoon $FreeBSD: src/share/misc/bsd-family-tree,v 1.151 2012/02/22 17:52:53 maxim Exp $
    608