Home | History | Annotate | Line # | Download | only in misc
bsd-family-tree revision 1.73
      1 The UNIX system family tree: Research and BSD
      2 ---------------------------------------------
      3 
      4 First Edition (V1)
      5      |
      6 Second Edition (V2)
      7      |
      8 Third Edition (V3)
      9      |
     10 Fourth Edition (V4)
     11      |
     12 Fifth Edition (V5)
     13      |
     14 Sixth Edition (V6) -----*
     15        \                |
     16         \               |
     17          \              |
     18 Seventh 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      /            |                      |
     38 Eighth Edition    |                   2.9BSD-Seismo
     39      |            |                      |
     40      +----<--- 4.2BSD               2.9.1BSD
     41      |            |                      |
     42      +----<--- 4.3BSD -------------> 2.10BSD
     43      |            |               /      |
     44 Ninth Edition     |              / 2.10.1BSD
     45      |         4.3BSD Tahoe-----+        |
     46      |            |              \       |
     47      |            |                \     |
     48      v            |                  2.11BSD
     49 Tenth Edition     |                      |
     50                   |                  2.11BSD rev #430
     51                4.3BSD NET/1              |
     52                   |                      v
     53                4.3BSD Reno
     54                   |
     55    *---------- 4.3BSD NET/2 -------------------+-------------*
     56    |                    |                      |             |
     57 386BSD 0.0              |                      |           BSD/386 ALPHA
     58    |                    |                      |             |
     59 386BSD 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    |               /    |                      |             |
     67 FreeBSD 1.0 <-----'  NetBSD 0.9                |           BSD/386 1.1
     68    |                    |           .----- 4.4BSD Lite       |
     69 FreeBSD 1.1             |          /   /       |     \       |
     70    |                    |         /   /        |      \      |
     71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
     72    |               /    |           /          |        \    |
     73 FreeBSD 1.1.5.1   /     |          /           |         \   |
     74    |             /   NetBSD 1.0 <-'            |          \  |
     75    |            /       |                      |           \ |
     76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
     77    |                     \                     |             |
     78 FreeBSD 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     |
     85 FreeBSD 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  |     FreeBSD 2.2.8 | |     |    |            |             |
    114  |         |         | |     |    |            |             |
    115  |         v         | |     |    |        OpenBSD 2.4       |
    116  |     FreeBSD 2.2.9 | |     |    |            |             |
    117  |                   | |     |    |            |             |
    118 FreeBSD 3.0 <--------* |     |    v            |             |
    119  |                     |     | NetBSD 1.3.3    |             |
    120  *---FreeBSD 3.1       |     |                 |             |
    121  |       |             |     |                 |           BSD/OS 4.0.1
    122  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
    123  |       |          |  |  |  |    |            |             |
    124  |       |          |  |  |  |    |            |             |
    125  |       |          |  |  |  |    |            |             |
    126  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
    127  |       |          |  |  |  |    |        OpenBSD 2.6       |
    128  |   FreeBSD 3.4    |  |  |  |    |            |             |
    129  |           |      |  |  |  |    |            |           BSD/OS 4.1
    130 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
    131  |           |      |  |  |  |    |            |             |
    132  |           |      |  |  |  |    |            |             |
    133  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
    134  |           |      |  |  |  |    |            |             |
    135  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
    136  |                  |  |  |  |    |            |             |
    137  *---FreeBSD 4.1    |  |  |  |    |            |             |
    138  |      |           |  | (?) |    |            |             |
    139  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
    140  |      |           |  | /   |    |            |             |
    141  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
    142  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
    143  |      |             |      |                 |             |
    144  |      |             |      |                 |             |
    145  |      |           10.0  NetBSD 1.5           |             |
    146  |   FreeBSD 4.3      |      |    |            |             |
    147  |      |             |      |    |        OpenBSD 2.9       |
    148  |      |             |      | NetBSD 1.5.1    |             |
    149  |      |             |      |    |            |             |
    150  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
    151  |      |        | Mac OS X  |    |            |             |
    152  |      |        |   10.1    |    |        OpenBSD 3.0       |
    153  |   FreeBSD 4.5 |    |      |    |            |             |
    154  |      |         \   |      |    |            |           BSD/OS 4.3
    155  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
    156  |      |           \ |      | NetBSD 1.5.3    |             |
    157  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
    158  |      |            10.2    |                 |             |
    159  |   FreeBSD 4.7      |      |                 |             |
    160  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
    161  |   FreeBSD 4.8      |      |    |            |             |
    162  |      |             |      | NetBSD 1.6.1    |             |
    163  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
    164  |      |         \   |      |    |            |             |
    165  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
    166  |      |          |  |      |    |            |
    167  |      |          |  |      | NetBSD 1.6.2    |
    168  |      |          |  |      |    |            |
    169  |      |          |  |      |    |        OpenBSD 3.5
    170  |      |          |  |      |    v            |
    171  |   FreeBSD 4.10  |  |      |                 |
    172  |      |          |  |      |                 |
    173  |   FreeBSD 4.11  |  |      |                 |
    174  |                 |  |      |                 |
    175  |                  `-|------|-----------------|---------------------.
    176  |                    |      |                 |                      \
    177 FreeBSD 5.0           |      |                 |                       |
    178  |                    |      |                 |                       |
    179 FreeBSD 5.1           |      |                 |                DragonFly 1.0
    180  |          \         |      |                 |                       |
    181  |           ----- Mac OS X  |                 |                       |
    182  |                   10.3    |                 |                       |
    183 FreeBSD 5.2           |      |                 |                       |
    184  |      |             |      |                 |                       |
    185  |   FreeBSD 5.2.1    |      |                 |                       |
    186  |                    |      |                 |                       |
    187  *-------FreeBSD 5.3  |      |                 |                       |
    188  |           |        |      |             OpenBSD 3.6                 |
    189  |           |        |   NetBSD 2.0           |                       |
    190  |           |        |      | |  |            |               DragonFly 1.2.0
    191  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
    192  |           |       10.4    | |  |            |                       |
    193  |       FreeBSD 5.4  |      | |  |            |                       |
    194  |           |        |      | |  |        OpenBSD 3.7                 |
    195  |           |        |      | | NetBSD 2.0.3  |                       |
    196  |           |        |      | |  |            |                       |
    197  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
    198  |    6.0    |        |      | |               |                       |
    199  |     |     |        |      |  \              |                       |
    200  |     |     |        |      | NetBSD 2.1      |                       |
    201  |     |     |        |      |                 |                       |
    202  |     |     |        |   NetBSD 3.0           |                       |
    203  |     |     |        |      | |  |            |               DragonFly 1.4.0
    204  |     |     |        |      | |  |        OpenBSD 3.9                 |
    205  |  FreeBSD  |        |      | |  |            |                       |
    206  |    6.1    |        |      | |  |            |                       |
    207  |     |  FreeBSD 5.5 |      | |  |            |                       |
    208  |     |              |      | | NetBSD 3.0.1  |               DragonFly 1.6.0
    209  |     |              |      | |  |            |                       |
    210  |     |              |      | |  |        OpenBSD 4.0                 |
    211  |     |              |      | | NetBSD 3.0.2  |                       |
    212  |     |              |      | NetBSD 3.1      |                       |
    213  | FreeBSD 6.2        |      |                 |                       |
    214  |     |              |      |                 |               DragonFly 1.8.0
    215  |     |              |      |             OpenBSD 4.1                 |
    216  |     |              |      |                 |               DragonFly 1.10.0
    217  |     |           Mac OS X  |                 |                       |
    218  |     |             10.5    |                 |                       |
    219  |     |              |      |             OpenBSD 4.2                 |
    220  |     |              |   NetBSD 4.0           |                       |
    221  | FreeBSD 6.3        |      |    |            |                       |
    222  |            \       |      |    |            |                       |
    223  *--FreeBSD    |      |      |    |            |               DragonFly 1.12.0
    224  |    7.0      |      |      |    |            |                       |
    225  |     |       |      |      |    |        OpenBSD 4.3                 |
    226  |     |       |      |      | NetBSD          |               DragonFly 2.0.0
    227  |     |    FreeBSD   |      |  4.0.1      OpenBSD 4.4                 |
    228  |     |      6.4     |      |                 |                       |
    229  |     |              |      |                 |                       |
    230  |  FreeBSD 7.1       |      |                 |                       |
    231  |     |              |      |                 |               DragonFly 2.2.0
    232  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
    233  |             \      |      | |    \          |                       |
    234  |              |  Mac OS X  | |     \         |                       |
    235  |              |    10.6    | |      \        |                       |
    236  |              |     |      | |   NetBSD      |               DragonFly 2.4.0
    237  |              |     |      | |    5.0.1  OpenBSD 4.6                 |
    238  |              |     |      | |       |       |                       |
    239  *--FreeBSD     |     |      | |       |       |                       |
    240  |    8.0       |     |      | |       |       |                       |
    241  |     |     FreeBSD  |      | |   NetBSD      |                       |
    242  |     |       7.3    |      | |    5.0.2      |               DragonFly 2.6.0
    243  |     |        |     |      | |           OpenBSD 4.7                 |
    244  |  FreeBSD     |     |      | |               |                       |
    245  |    8.1       |     |      | |               |                       |
    246  |     |        |     |      | |               |               DragonFly 2.8.2
    247  |     |        |     |      | |           OpenBSD 4.8                 |
    248  |     |        |     |      | *--NetBSD       |                       |
    249  |  FreeBSD  FreeBSD  |      | |    5.1        |                       |
    250  |    8.2      7.4    |      | |      |        |               DragonFly 2.10.1
    251  |     |              |      | |      |    OpenBSD 4.9                 |
    252  |     `-----.     Mac OS X  | |      |        |                       |
    253  |            \      10.7    | |      |        |                       |
    254  |             |      |      | |      |    OpenBSD 5.0                 |
    255  *--FreeBSD    |      |      | |      |        |                       |
    256  |    9.0      |      |      | |   NetBSD      |               DragonFly 3.0.1
    257  |     |    FreeBSD   |      | |    5.1.2      |                       |
    258  |     |      8.3     |      | |      |        |                       |
    259  |     |       |      |      | |   NetBSD      |                       |
    260  |     |       |      |      | |    5.1.3      |                       |
    261  |     |       |      |      | |      |        |                       |
    262  |     |       |      |      | |   NetBSD      |                       |
    263  |     |       |      |      | |    5.1.4      |                       |
    264  |     |       |      |      | |           OpenBSD 5.1                 |
    265  |     |       |   Mac OS X  | `----.          |                       |
    266  |     |       |     10.8    |       \         |                       |
    267  |     |       |      |   NetBSD 6.0  |        |                       |
    268  |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
    269  |  FreeBSD    |      |      | | | NetBSD      |                       |
    270  |    9.1      |      |      | | |   5.2       |                       |
    271  |     |       |      |      | | |    |        |                       |
    272  |     |       |      |      | | | NetBSD      |                       |
    273  |     |       |      |      | | |  5.2.1      |                       |
    274  |     |       |      |      | | |    |        |                       |
    275  |     |       |      |      | | | NetBSD      |                       |
    276  |     |       |      |      | | |  5.2.2      |                       |
    277  |     |       |      |      | | |             |                       |
    278  |     |       |      |      | |  \            |                       |
    279  |     |       |      |      | |   NetBSD      |                       |
    280  |     |       |      |      | |    6.0.1      |                       |
    281  |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
    282  |     |       |      |      | |   NetBSD      |                       |
    283  |     |       |      |      | |    6.0.2      |                       |
    284  |     |       |      |      | |      |        |                       |
    285  |     |       |      |      | |   NetBSD      |                       |
    286  |     |       |      |      | |    6.0.3      |                       |
    287  |     |       |      |      | |      |        |                       |
    288  |     |       |      |      | |   NetBSD      |                       |
    289  |     |       |      |      | |    6.0.4      |                       |
    290  |     |       |      |      | |      |        |                       |
    291  |     |       |      |      | |   NetBSD      |                       |
    292  |     |       |      |      | |    6.0.5      |                       |
    293  |     |       |      |      | |      |        |                       |
    294  |     |       |      |      | |   NetBSD      |                       |
    295  |     |       |      |      | |    6.0.6      |                       |
    296  |     |       |      |      | |               |                       |
    297  |     |       |      |      | |`-NetBSD 6.1   |                       |
    298  |     |    FreeBSD   |      |       |         |                       |
    299  |     |      8.4     |      |    NetBSD 6.1.1 |                       |
    300  |     |              |      |       |         |                       |
    301  |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
    302  |    9.2          Mac OS X  |       |         |                       |
    303  |     |             10.9    |       |    OpenBSD 5.4                  |
    304  |     `-----.        |      |       |         |               DragonFly 3.6.0
    305  |            \       |      |       |         |                       |
    306  *--FreeBSD    |      |      |    NetBSD 6.1.3 |                       |
    307  |   10.0      |      |      |       |         |                       |
    308  |     |       |      |      |       |         |               DragonFly 3.6.1
    309  |     |       |      |      |       |         |                       |
    310  |     |       |      |      |       |         |                       |
    311  |     |       |      |      |       |         |               DragonFly 3.6.2
    312  |     |       |      |      |    NetBSD 6.1.4 |                       |
    313  |     |       |      |      |       |         |                       |
    314  |     |       |      |      |       |    OpenBSD 5.5                  |
    315  |     |       |      |      |       |         |                       |
    316  |     |       |      |      |       |         |               DragonFly 3.8.0
    317  |     |       |      |      |       |         |                       |
    318  |     |       |      |      |       |         |                       |
    319  |     |       |      |      |       |         |               DragonFly 3.8.1
    320  |     |       |      |      |       |         |                       |
    321  |     |       |      |      |       |         |                       |
    322  |     |       |      |      |       |         |               DragonFly 3.6.3
    323  |     |       |      |      |       |         |                       |
    324  |     |    FreeBSD   |      |       |         |                       |
    325  |     |      9.3     |      |       |         |                       |
    326  |     |              |      |    NetBSD 6.1.5 |               DragonFly 3.8.2
    327  |     |           Mac OS X  |                 |                       |
    328  |     |             10.10   |                 |                       |
    329  |     |              |      |            OpenBSD 5.6                  |
    330  |  FreeBSD           |      |                 |                       |
    331  |   10.1             |      |                 |               DragonFly 4.0.1
    332  |     |              |      |                 |                       |
    333  |     |              |      |                 |               DragonFly 4.0.2
    334  |     |              |      |                 |                       |
    335  |     |              |      |                 |               DragonFly 4.0.3
    336  |     |              |      |                 |                       |
    337  |     |              |      |                 |               DragonFly 4.0.4
    338  |     |              |      |                 |                       |
    339  |     |              |      |                 |               DragonFly 4.0.5
    340  |     |              |      |                 |                       |
    341  |     |              |      |            OpenBSD 5.7                  |
    342  |     |              |      |                 |               DragonFly 4.2.0
    343  |  FreeBSD           |      |                 |                       |
    344  |   10.2             |      |                 |                       |
    345  |     |            macOS  NetBSD 7.0          |                       |
    346  |     |            10.11   | | |         OpenBSD 5.8                  |
    347  |     |              |     | | `--.           |               DragonFly 4.4.1
    348  |  FreeBSD           |     | |    |      OpenBSD 5.9                  |
    349  |   10.3             |     | |    |           |                       |
    350  |     |              |     | | NetBSD 7.0.1   |                       |
    351  |     `------.       |     | |    |           |               DragonFly 4.6.0
    352  |            |       |     | |    |           |                       |
    353  |            |       |     | |    |           |                       |
    354  *--FreeBSD   |     macOS   | |    |      OpenBSD 6.0                  |
    355  |   11.0     |     10.12   | | NetBSD 7.0.2   |                       |
    356  |     |      |       |     | |                |                       |
    357  |     |      |       |     | *- NetBSD 7.1    |                       |
    358  |     |      |       |     |      |           |                       |
    359  |     |      |       |     |      |           |                       |
    360  |     |      |     macOS   |      |           |               DragonFly 4.8.0
    361  |     |      |     10.13   |      |      OpenBSD 6.1                  |
    362  |  FreeBSD   |       |     |      |           |               DragonFly 5.0.0
    363  |   11.1  FreeBSD    |     |      |           |                       |
    364  |     |    10.4      |     |      |      OpenBSD 6.2          DragonFly 5.0.1
    365  |     |              |     |      |           |                       |
    366  |     `------.       |     |  NetBSD 7.1.1    |               DragonFly 5.0.2
    367  |            |       |     |      |           |                       |
    368  |            |       |     |  NetBSD 7.1.2    |                       |
    369  |            |       |     |      |           |                       |
    370  |            |       |     |      |      OpenBSD 6.3                  |
    371  |            |       |  NetBSD    |           |               DragonFly 5.2.0
    372  |            |       |    8.0     |           |                       |
    373  |            |       |     |      |           |               DragonFly 5.2.1
    374  |            |       |     |      |           |                       |
    375  |            |       |     |      |           |               DragonFly 5.2.2
    376  |         FreeBSD    |     |  NetBSD 7.2      |                       |
    377  |           11.2   macOS   |      |           |                       |
    378  |                  10.14   |      |      OpenBSD 6.4                  |
    379  |                    |     |      |           |               DragonFly 5.4.0
    380  *--FreeBSD           |     |      v           |                       |
    381  |   12.0             |     |                  |               DragonFly 5.4.1
    382  |                    |     |             OpenBSD 6.5                  |
    383  |                    |  NetBSD                |                       |
    384  |                    |    8.1                 |               DragonFly 5.6
    385  |                    |     |                  |                       |
    386 FreeBSD 13 -current   | NetBSD -current   OpenBSD -current    DragonFly -current
    387  |                    |     |                  |                       |
    388  v                    v     v                  v                       v
    389 
    390 Time
    391 ----------------
    392 
    393 Time tolerance +/- 6 months, depending on which book/article you read; if it
    394 was the announcement in Usenet or if it was available as tape.
    395 
    396 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
    397 	and John Quarterman. The Design and Implementation of
    398 	the 4.4BSD Operating System.
    399 [APL] Apple website [https://www.apple.com/macosx/]
    400 [BSDI] Berkeley Software Design, Inc.
    401 [DFB] DragonFlyBSD Project, The.
    402 [DOC] README, COPYRIGHT on tape.
    403 [FBD] FreeBSD Project, The.
    404 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
    405 	Volume 11, Info 4, April, 1987.
    406 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
    407 	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
    408 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
    409 	Changes in the Kernel in 2.9BSD. Second Berkeley Software
    410 	Distribution UNIX Version 2.9, July, 1983.
    411 [NBD] NetBSD Project, The.
    412 [OBD] OpenBSD Project, The.
    413 [QCU] Salus, Peter H. A quarter century of UNIX.
    414 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
    415 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
    416 [USE] Usenet announcement.
    417 [WRS] Wind River Systems, Inc.
    418 [dmr] Dennis Ritchie, via E-Mail
    419 
    420 Multics                 1965
    421 UNIX                    Summer 1969
    422 				DEC PDP-7
    423 First   Edition         1971-11-03 [QCU]
    424 				DEC PDP-11/20, Assembler
    425 Second  Edition         1972-06-12 [QCU]
    426 				10 UNIX installations
    427 Third   Edition         1973-02-xx [QCU]
    428 				Pipes, 16 installations
    429 Fourth  Edition         1973-11-xx [QCU]
    430 				rewriting in C effected,
    431                                 above 30 installations
    432 Fifth   Edition         1974-06-xx [QCU]
    433 				above 50 installations
    434 Sixth   Edition         1975-05-xx [QCU]
    435 				port to DEC Vax
    436 Seventh Edition         1979-01-xx [QCU] 1979-01-10 [TUHS]
    437 				first portable UNIX
    438 Eighth  Edition         1985-02-xx [QCU]
    439 				VAX 11/750, VAX 11/780 [dmr]
    440 				descended from 4.1c BSD [dmr]
    441 				descended from 4.1 BSD [44B]
    442 			scooping-out and replacement of the character-device
    443 			and networking part by the streams mechanism
    444 
    445 Ninth   Edition         1986-09-xx [QCU]
    446 Tenth   Edition         1989-10-xx [QCU]
    447 
    448 1BSD                    late 1977
    449 			1978-03-09 [QCU]
    450 				PDP-11, Pascal, ex(1)
    451 				30 free copies of 1BSD sent out
    452 				35 tapes sold for 50 USD [QCU]
    453 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
    454 				75 2BSD tapes shipped
    455 2.79BSD			1980-04-xx [TUHS]
    456 2.8BSD			1981-07-xx [KSJ]
    457 
    458 2.8.1BSD		1982-01-xx [QCU]
    459 				set of performance improvements
    460 2.9BSD			1983-07-xx [KSJ]
    461 2.9.1BSD                1983-11-xx [TUHS]
    462 2.9BSD-Seismo		1985-08-xx [SMS]
    463 2.10BSD			1987-04-xx [KKK]
    464 2.10.1BSD		1989-01-xx [SMS]
    465 2.11BSD			1992-02-xx [SMS]
    466 2.11BSD rev #430	1999-12-13 [SMS]
    467 
    468 32V			1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
    469 3BSD                    late 1979 [QCU] March 1980 [TUHS]
    470 				virtual memory, page replacement,
    471                         	demand paging
    472 4.0BSD                  1980-10-xx
    473 4.1BSD                  1981-07-08 [DOC]
    474 4.1aBSD                 1982-04-xx
    475 				alpha release, 100 sites, networking [44B]
    476 4.1bBSD				internal release, fast filesystem [44B]
    477 4.1cBSD                 late 1982
    478 				beta release, IPC [44B]
    479 4.2BSD                  1983-09-xx [QCU]
    480                         1983-08-03 [DOC]
    481 4.3BSD                  1986-06-xx [QCU]
    482 			1986-04-05 [KB], [DOC]
    483 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
    484 4.3BSD NET/1            1988-11-xx [QCU]
    485                         1989-01-01 [DOC]
    486 4.3BSD Reno             1990-06-29 [QCU], [DOC]
    487 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
    488 
    489 BSD/386 ALPHA		1991-12-xx [BSDI]
    490 				first code released to people outside BSDI
    491 386BSD 0.0              1992-02-xx [DOC]
    492 BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
    493 BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
    494 386BSD 0.1              1992-07-28 [DOC]
    495 4.4BSD Alpha            1992-07-07
    496 BSD/386 0.9.3		1992-10-xx [BSDI]
    497 				first external gamma; G customers
    498 BSD/386 0.9.4		1992-12-xx [BSDI]
    499 				would have been 1.0 except for request
    500 				for preliminary injunction
    501 BSD/386 1.0 		1993-03-xx [BSDI]
    502 				injunction denied; first official release
    503 NetBSD 0.8              1993-04-20 [NBD]
    504 4.4BSD                  1993-06-01 [USE]
    505 NetBSD 0.9              1993-08-23 [NBD]
    506 FreeBSD 1.0		1993-11-01 [FBD]
    507 FreeBSD 1.0.2		1993-11-14 [FBD]
    508 				supersedes 1.0 13 days after release.
    509 BSD/386 1.1		1994-02-xx [BSDI]
    510 4.4BSD Lite             1994-03-01 [USE]
    511 FreeBSD 1.1		1994-05-07 [FBD]
    512 FreeBSD 1.1.5		1994-06-30 [FBD]
    513 FreeBSD 1.1.5.1		1994-07-05 [FBD]
    514 				supersedes 1.1.5 5 days after release.
    515 NetBSD 1.0              1994-10-26 [NBD]
    516 386BSD 1.0              1994-11-12 [USE]
    517 FreeBSD 2.0		1994-11-23 [FBD]
    518 BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
    519 FreeBSD 2.0.5		1995-06-10 [FBD]
    520 BSD/OS 2.0.1		1995-06-xx [BSDI]
    521 4.4BSD Lite Release 2	1995-06-xx [44B]
    522 				the true final distribution from the CSRG
    523 FreeBSD 2.1.0		1995-11-19 [FBD]
    524 NetBSD 1.1              1995-11-26 [NBD]
    525 BSD/OS 2.1		1996-01-xx [BSDI]
    526 FreeBSD 2.1.5		1996-07-14 [FBD]
    527 NetBSD 1.2              1996-10-04 [NBD]
    528 OpenBSD 2.0             1996-10-18 [OBD]
    529 FreeBSD 2.1.6		1996-11-16 [FBD]
    530 FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
    531 Rhapsody		1997-xx-xx
    532 FreeBSD 2.1.7		1997-02-20 [FBD]
    533 BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
    534 FreeBSD 2.2.0		1997-03-16 [FBD]
    535 FreeBSD 2.2.1		1997-03-25 [FBD]
    536 FreeBSD 2.2.2		1997-05-16 [FBD]
    537 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
    538 OpenBSD 2.1             1997-06-01 [OBD]
    539 FreeBSD 2.2.5		1997-10-22 [FBD]
    540 OpenBSD 2.2             1997-12-01 [OBD]
    541 NetBSD 1.3              1998-01-04 [NBD]
    542 FreeBSD 2.2.6		1998-03-25 [FBD]
    543 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
    544 BSD/OS 3.1		1998-03-xx [BSDI]
    545 OpenBSD 2.3             1998-05-19 [OBD]
    546 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
    547 FreeBSD 2.2.7		1998-07-22 [FBD]
    548 BSD/OS 4.0		1998-08-xx [BSDI]
    549 				2-lock MP support, ELF executables
    550 FreeBSD 3.0		1998-10-16 [FBD]
    551 				FreeBSD-3.0 is a snapshot from -current,
    552 				while 3.1 and 3.2 are from 3.x-stable which
    553 				was branched quite some time after 3.0-release
    554 FreeBSD 2.2.8           1998-11-29 [FBD]
    555 OpenBSD 2.4             1998-12-01 [OBD]
    556 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
    557 FreeBSD 3.1		1999-02-15 [FBD]
    558 BSD/OS 4.0.1		1999-03-xx [BSDI]
    559 NetBSD 1.4              1999-05-12 [NBD]
    560 FreeBSD 3.2             1999-05-17 [FBD]
    561 OpenBSD 2.5             1999-05-19 [OBD]
    562 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
    563 FreeBSD 3.3             1999-09-17 [FBD]
    564 OpenBSD 2.6             1999-12-01 [OBD]
    565 FreeBSD 3.4             1999-12-20 [FBD]
    566 BSD/OS 4.1		1999-12-xx [BSDI]
    567 FreeBSD 4.0             2000-03-13 [FBD]
    568 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
    569 OpenBSD 2.7             2000-06-15 [OBD]
    570 FreeBSD 3.5		2000-06-24 [FBD]
    571 FreeBSD 4.1		2000-07-27 [FBD]
    572 FreeBSD 3.5.1		2000-07-28 [FBD]
    573 FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
    574 FreeBSD 4.2  		2000-11-21 [FBD]
    575 NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
    576 BSD/OS 4.2		2000-11-29 [BSDI]
    577 OpenBSD 2.8		2000-12-01 [OBD]
    578 NetBSD 1.5              2000-12-06 [NBD]
    579 Mac OS X 10.0           2001-03-24 [APL]
    580 FreeBSD 4.3  		2001-04-20 [FBD]
    581 OpenBSD 2.9  		2001-06-01 [OBD]
    582 NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
    583 NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
    584 FreeBSD 4.4  		2001-09-18 [FBD]
    585 Mac OS X 10.1		2001-09-29 [APL]
    586 OpenBSD 3.0		2001-12-01 [OBD]
    587 FreeBSD 4.5  		2002-01-29 [FBD]
    588 BSD/OS 4.3		2002-03-14 [WRS]
    589 OpenBSD 3.1		2002-05-19 [OBD]
    590 FreeBSD 4.6  		2002-06-15 [FBD]
    591 NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
    592 FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
    593 Mac OS X 10.2		2002-08-23 [APL]
    594 NetBSD 1.6		2002-09-14 [NBD]
    595 FreeBSD 4.7		2002-10-08 [FBD]
    596 OpenBSD 3.2		2002-11-01 [OBD]
    597 FreeBSD 5.0		2003-01-17 [FBD]
    598 				FreeBSD 5.0 is a separate branch off of
    599 				-current, similar to 3.0.
    600 FreeBSD 4.8		2003-04-03 [FBD]
    601 NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
    602 OpenBSD 3.3		2003-05-01 [OBD]
    603 BSD/OS 5.0		2003-05-?? [WRS]
    604 FreeBSD 5.1		2003-06-09 [FBD]
    605 Mac OS X 10.3		2003-10-24 [APL]
    606 FreeBSD 4.9		2003-10-28 [FBD]
    607 BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
    608 OpenBSD 3.4		2003-11-01 [OBD]
    609 FreeBSD 5.2		2004-01-12 [FBD]
    610 FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
    611 NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
    612 OpenBSD 3.5		2004-04-01 [OBD]
    613 FreeBSD 4.10		2004-05-27 [FBD]
    614 DragonFly 1.0		2004-07-12 [DFB]
    615 OpenBSD 3.6		2004-10-29 [OBD]
    616 FreeBSD 5.3		2004-11-06 [FBD]
    617 NetBSD 2.0		2004-12-09 [NBD]
    618 FreeBSD 4.11		2005-01-25 [FBD]
    619 DragonFly 1.2.0		2005-04-08 [DFB]
    620 NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
    621 Mac OS X 10.4		2005-04-29 [APL]
    622 FreeBSD 5.4		2005-05-09 [FBD]
    623 OpenBSD 3.7		2005-05-19 [OBD]
    624 NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
    625 OpenBSD 3.8		2005-11-01 [OBD]
    626 FreeBSD 6.0		2005-11-01 [FBD]
    627 NetBSD 2.1		2005-11-02 [NBD]
    628 NetBSD 3.0		2005-12-23 [NBD]
    629 DragonFly 1.4.0		2006-01-08 [DFB]
    630 FreeBSD 2.2.9		2006-04-01 [FBD]
    631 OpenBSD 3.9		2006-05-01 [OBD]
    632 FreeBSD 6.1		2006-05-08 [FBD]
    633 FreeBSD 5.5		2006-05-25 [FBD]
    634 NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
    635 DragonFly 1.6.0		2006-07-24 [DFB]
    636 OpenBSD 4.0		2006-11-01 [OBD]
    637 NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
    638 NetBSD 3.1		2006-11-04 [NBD]
    639 FreeBSD 6.2		2007-01-15 [FBD]
    640 DragonFly 1.8.0		2007-01-30 [DFB]
    641 OpenBSD 4.1		2007-05-01 [OBD]
    642 DragonFly 1.10.0	2007-08-06 [DFB]
    643 Mac OS X 10.5		2007-10-26 [APL]
    644 OpenBSD 4.2		2007-11-01 [OBD]
    645 NetBSD 4.0		2007-12-19 [NBD]
    646 FreeBSD 6.3		2008-01-18 [FBD]
    647 DragonFly 1.12.0	2008-02-26 [DFB]
    648 FreeBSD 7.0		2008-02-27 [FBD]
    649 OpenBSD 4.3		2008-05-01 [OBD]
    650 DragonFly 2.0.0		2008-07-21 [DFB]
    651 OpenBSD 4.4		2008-11-01 [OBD]
    652 FreeBSD 6.4		2008-11-28 [FBD]
    653 FreeBSD 7.1		2009-01-04 [FBD]
    654 DragonFly 2.2.0		2009-02-17 [DFB]
    655 NetBSD 5.0		2009-04-29 [NBD]
    656 OpenBSD 4.5		2009-05-01 [OBD]
    657 FreeBSD 7.2		2009-05-04 [FBD]
    658 Mac OS X 10.6		2009-06-08 [APL]
    659 NetBSD 5.0.1		2009-08-02 [NBD] (security/critical release)
    660 DragonFly 2.4.0		2009-09-16 [DFB]
    661 OpenBSD 4.6		2009-10-18 [OBD]
    662 FreeBSD 8.0		2009-11-26 [FBD]
    663 NetBSD 5.0.2		2010-02-12 [NBD] (security/critical release)
    664 FreeBSD 7.3		2010-03-23 [FBD]
    665 DragonFly 2.6.0		2010-03-28 [DFB]
    666 OpenBSD 4.7		2010-05-19 [OBD]
    667 FreeBSD 8.1		2010-07-24 [FBD]
    668 DragonFly 2.8.2		2010-10-30 [DFB]
    669 OpenBSD 4.8		2010-11-01 [OBD]
    670 NetBSD 5.1		2010-11-19 [NBD]
    671 FreeBSD 7.4		2011-02-24 [FBD]
    672 FreeBSD 8.2		2011-02-24 [FBD]
    673 DragonFly 2.10.1	2011-04-26 [DFB]
    674 OpenBSD 4.9		2011-05-01 [OBD]
    675 Mac OS X 10.7		2011-07-20 [APL]
    676 OpenBSD 5.0		2011-11-01 [OBD]
    677 FreeBSD 9.0		2012-01-12 [FBD]
    678 NetBSD 5.1.2		2012-02-02 [NBD] (security/critical release)
    679 DragonFly 3.0.1		2012-02-21 [DFB]
    680 FreeBSD 8.3		2012-04-18 [FBD]
    681 OpenBSD 5.1		2012-05-01 [OBD]
    682 Mac OS X 10.8		2012-07-25 [APL]
    683 NetBSD 6.0		2012-10-17 [NBD]
    684 OpenBSD 5.2		2012-11-01 [OBD]
    685 DragonFly 3.2.1		2012-11-02 [DFB]
    686 NetBSD 5.2		2012-12-03 [NBD]
    687 NetBSD 6.0.1		2012-12-26 [NBD] (security/critical release)
    688 FreeBSD 9.1		2012-12-30 [FBD]
    689 DragonFly 3.4.1		2013-04-29 [DFB]
    690 OpenBSD 5.3		2013-05-01 [OBD]
    691 NetBSD 6.0.2		2013-05-18 [NBD] (security/critical release)
    692 NetBSD 6.1		2013-05-18 [NBD]
    693 FreeBSD 8.4		2013-06-07 [FBD]
    694 NetBSD 6.1.1		2013-08-22 [NBD]
    695 NetBSD 5.1.3		2013-09-29 [NBD]
    696 NetBSD 5.2.1		2013-09-29 [NBD]
    697 FreeBSD 9.2		2013-09-30 [FBD]
    698 NetBSD 6.0.3		2013-09-30 [NBD]
    699 NetBSD 6.1.2		2013-09-30 [NBD]
    700 Mac OS X 10.9		2013-10-22 [APL]
    701 OpenBSD 5.4		2013-11-01 [OBD]
    702 DragonFly 3.6.0 	2013-11-25 [DFB]
    703 FreeBSD 10.0		2014-01-20 [FBD]
    704 NetBSD 5.1.4		2014-01-25 [NBD]
    705 NetBSD 5.2.2		2014-01-25 [NBD]
    706 NetBSD 6.0.4		2014-01-25 [NBD]
    707 NetBSD 6.1.3		2014-01-25 [NBD]
    708 DragonFly 3.6.1 	2014-02-22 [DFB]
    709 DragonFly 3.6.2		2014-04-10 [DFB]
    710 NetBSD 6.0.5		2014-04-12 [NBD]
    711 NetBSD 6.1.4		2014-04-12 [NBD]
    712 OpenBSD 5.5		2014-05-01 [OBD]
    713 DragonFly 3.8.0		2014-06-04 [DFB]
    714 DragonFly 3.8.1		2014-06-16 [DFB]
    715 DragonFly 3.6.3		2014-06-17 [DFB]
    716 FreeBSD 9.3		2014-07-05 [FBD]
    717 DragonFly 3.8.2		2014-08-08 [DFB]
    718 NetBSD 6.0.6		2014-09-22 [NBD]
    719 NetBSD 6.1.5		2014-09-22 [NBD]
    720 Mac OS X 10.10		2014-10-16 [APL]
    721 OpenBSD 5.6		2014-11-01 [OBD]
    722 FreeBSD 10.1		2014-11-14 [FBD]
    723 DragonFly 4.0.1		2014-11-25 [DFB]
    724 DragonFly 4.0.2		2015-01-07 [DFB]
    725 DragonFly 4.0.3		2015-01-21 [DFB]
    726 DragonFly 4.0.4		2015-03-09 [DFB]
    727 DragonFly 4.0.5		2015-03-23 [DFB]
    728 OpenBSD 5.7		2015-05-01 [OBD]
    729 DragonFly 4.2.0		2015-06-29 [DFB]
    730 FreeBSD 10.2            2015-08-13 [FBD]
    731 NetBSD 7.0		2015-09-25 [NBD]
    732 OS X 10.11		2015-09-30 [APL]
    733 OpenBSD 5.8		2015-10-18 [OBD]
    734 DragonFly 4.4.1		2015-12-07 [DFB]
    735 OpenBSD 5.9		2016-03-29 [OBD]
    736 FreeBSD 10.3		2016-04-04 [FBD]
    737 NetBSD 7.0.1		2016-05-22 [NBD]
    738 DragonFly 4.6.0		2016-08-02 [DFB]
    739 OpenBSD 6.0		2016-09-01 [OBD]
    740 macOS 10.12		2016-09-20 [APL]
    741 FreeBSD 11.0		2016-10-10 [FBD]
    742 NetBSD 7.0.2		2016-10-21 [NBD]
    743 NetBSD 7.1		2017-03-11 [NBD]
    744 DragonFly 4.8.0		2017-03-27 [DFB]
    745 OpenBSD 6.1		2017-04-11 [OBD]
    746 FreeBSD 11.1		2017-07-26 [FBD]
    747 macOS 10.13		2017-09-25 [APL]
    748 FreeBSD 10.4		2017-10-03 [FBD]
    749 OpenBSD 6.2		2017-10-09 [OBD]
    750 DragonFly 5.0.0		2017-10-16 [DFB]
    751 DragonFly 5.0.1		2017-11-06 [DFB]
    752 DragonFly 5.0.2		2017-12-04 [DFB]
    753 NetBSD 7.1.1		2017-12-22 [NBD]
    754 NetBSD 7.1.2		2018-03-15 [NBD]
    755 OpenBSD 6.3		2018-04-02 [OBD]
    756 DragonFly 5.2.0		2018-04-10 [DFB]
    757 DragonFly 5.2.1		2018-05-20 [DFB]
    758 DragonFly 5.2.2		2018-06-18 [DFB]
    759 FreeBSD 11.2		2018-06-27 [FBD]
    760 NetBSD 8.0		2018-07-17 [NBD]
    761 NetBSD 7.2		2018-08-29 [NBD]
    762 macOS 10.14		2018-09-24 [APL]
    763 OpenBSD 6.4		2018-10-18 [OBD]
    764 DragonFly 5.4.0		2018-12-03 [DFB]
    765 FreeBSD 12.0		2018-12-11 [FBD]
    766 DragonFly 5.4.1		2018-12-24 [DFB]
    767 OpenBSD 6.5		2019-05-01 [OBD]
    768 NetBSD 8.1		2019-06-04 [NBD]
    769 DragonFly 5.6		2019-06-17 [DFB]
    770 
    771 Bibliography
    772 ------------------------
    773 
    774 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
    775 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
    776 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
    777 
    778 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
    779 Company, Inc., 1994. ISBN 0-201-54777-5
    780 
    781 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
    782 Quarterman. The Design and Implementation of the 4.4BSD Operating
    783 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
    784 
    785 McKusick, Marshall Kirk, George Neville-Neil. The Design and
    786 Implementation of the FreeBSD Operating System.
    787 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
    788 
    789 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
    790 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
    791 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
    792 
    793 Doug McIlroy. Research Unix Reader.
    794 
    795 Michael G. Brown. The Role of BSD in the Development of Unix.
    796 Presented to the Tasmanian Unix Special Interest Group of the
    797 Australian Computer Society, Hobart, August 1993.
    798 
    799 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
    800 URL: http://www.byte.com/art/9410/sec8/art3.htm
    801 
    802 Andreas Klemm, Lars Kller. If you're going to San Francisco ...
    803 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
    804 
    805 BSD Release Announcements collection.
    806 URL: https://www.FreeBSD.org/releases/
    807 
    808 BSD Hypertext Man Pages
    809 URL: https://www.FreeBSD.org/cgi/man.cgi
    810 
    811 UNIX history graphing project
    812 URL: http://minnie.tuhs.org/Unix_History/index.html
    813 
    814 UNIX history
    815 URL: http://www.levenez.com/unix/
    816 
    817 James Howard: The BSD Family Tree
    818 URL: http://ezine.daemonnews.org/200104/bsd_family.html
    819 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
    820 
    821 
    822 Acknowledgments
    823 ---------------
    824 
    825 Josh Gilliam for suggestions, bug fixes, and finding very old
    826 original BSD announcements from Usenet or tapes.
    827 
    828 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
    829 
    830 --
    831 Copyright (c) 1997-2012 Wolfram Schneider <wosch (a] FreeBSD.ORG>
    832 URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
    833 
    834 $FreeBSD: head/share/misc/bsd-family-tree 349157 2019-06-17 21:46:13Z sevan $
    835 $NetBSD: bsd-family-tree,v 1.73 2019/06/17 21:51:56 sevan Exp $
    836