Home | History | Annotate | Line # | Download | only in misc
bsd-family-tree revision 1.69
      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  |     |              |     |      |           |               DragonFly 5.2.0
    372  |     |              |     |      |           |                       |
    373  |     |              |     |      |           |               DragonFly 5.2.1
    374  |     |              |     |      |           |                       |
    375  |     |              |     |      |           |               DragonFly 5.2.2
    376  |  FreeBSD           |     |  NetBSD 8.0      |                       |
    377  |   11.2             |     |      |           |                       |
    378  |     v              |     |      |           |                       |
    379  |                    |     |      v           |                       |
    380 FreeBSD 12 -current   | NetBSD -current   OpenBSD -current    DragonFly -current
    381  |                    |     |                  |                       |
    382  v                    v     v                  v                       v
    383 
    384 Time
    385 ----------------
    386 
    387 Time tolerance +/- 6 months, depending on which book/article you read; if it
    388 was the announcement in Usenet or if it was available as tape.
    389 
    390 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
    391 	and John Quarterman. The Design and Implementation of
    392 	the 4.4BSD Operating System.
    393 [APL] Apple website [https://www.apple.com/macosx/]
    394 [BSDI] Berkeley Software Design, Inc.
    395 [DFB] DragonFlyBSD Project, The.
    396 [DOC] README, COPYRIGHT on tape.
    397 [FBD] FreeBSD Project, The.
    398 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
    399 	Volume 11, Info 4, April, 1987.
    400 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
    401 	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
    402 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
    403 	Changes in the Kernel in 2.9BSD. Second Berkeley Software
    404 	Distribution UNIX Version 2.9, July, 1983.
    405 [NBD] NetBSD Project, The.
    406 [OBD] OpenBSD Project, The.
    407 [QCU] Salus, Peter H. A quarter century of UNIX.
    408 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
    409 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
    410 [USE] Usenet announcement.
    411 [WRS] Wind River Systems, Inc.
    412 [dmr] Dennis Ritchie, via E-Mail
    413 
    414 Multics                 1965
    415 UNIX                    Summer 1969
    416 				DEC PDP-7
    417 First   Edition         1971-11-03 [QCU]
    418 				DEC PDP-11/20, Assembler
    419 Second  Edition         1972-06-12 [QCU]
    420 				10 UNIX installations
    421 Third   Edition         1973-02-xx [QCU]
    422 				Pipes, 16 installations
    423 Fourth  Edition         1973-11-xx [QCU]
    424 				rewriting in C effected,
    425                                 above 30 installations
    426 Fifth   Edition         1974-06-xx [QCU]
    427 				above 50 installations
    428 Sixth   Edition         1975-05-xx [QCU]
    429 				port to DEC Vax
    430 Seventh Edition         1979-01-xx [QCU] 1979-01-10 [TUHS]
    431 				first portable UNIX
    432 Eighth  Edition         1985-02-xx [QCU]
    433 				VAX 11/750, VAX 11/780 [dmr]
    434 				descended from 4.1c BSD [dmr]
    435 				descended from 4.1 BSD [44B]
    436 			scooping-out and replacement of the character-device
    437 			and networking part by the streams mechanism
    438 
    439 Ninth   Edition         1986-09-xx [QCU]
    440 Tenth   Edition         1989-10-xx [QCU]
    441 
    442 1BSD                    late 1977
    443 			1978-03-09 [QCU]
    444 				PDP-11, Pascal, ex(1)
    445 				30 free copies of 1BSD sent out
    446 				35 tapes sold for 50 USD [QCU]
    447 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
    448 				75 2BSD tapes shipped
    449 2.79BSD			1980-04-xx [TUHS]
    450 2.8BSD			1981-07-xx [KSJ]
    451 
    452 2.8.1BSD		1982-01-xx [QCU]
    453 				set of performance improvements
    454 2.9BSD			1983-07-xx [KSJ]
    455 2.9.1BSD                1983-11-xx [TUHS]
    456 2.9BSD-Seismo		1985-08-xx [SMS]
    457 2.10BSD			1987-04-xx [KKK]
    458 2.10.1BSD		1989-01-xx [SMS]
    459 2.11BSD			1992-02-xx [SMS]
    460 2.11BSD rev #430	1999-12-13 [SMS]
    461 
    462 32V			1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
    463 3BSD                    late 1979 [QCU] March 1980 [TUHS]
    464 				virtual memory, page replacement,
    465                         	demand paging
    466 4.0BSD                  1980-10-xx
    467 4.1BSD                  1981-07-08 [DOC]
    468 4.1aBSD                 1982-04-xx
    469 				alpha release, 100 sites, networking [44B]
    470 4.1bBSD				internal release, fast filesystem [44B]
    471 4.1cBSD                 late 1982
    472 				beta release, IPC [44B]
    473 4.2BSD                  1983-09-xx [QCU]
    474                         1983-08-03 [DOC]
    475 4.3BSD                  1986-06-xx [QCU]
    476 			1986-04-05 [KB], [DOC]
    477 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
    478 4.3BSD NET/1            1988-11-xx [QCU]
    479                         1989-01-01 [DOC]
    480 4.3BSD Reno             1990-06-29 [QCU], [DOC]
    481 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
    482 
    483 BSD/386 ALPHA		1991-12-xx [BSDI]
    484 				first code released to people outside BSDI
    485 386BSD 0.0              1992-02-xx [DOC]
    486 BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
    487 BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
    488 386BSD 0.1              1992-07-28 [DOC]
    489 4.4BSD Alpha            1992-07-07
    490 BSD/386 0.9.3		1992-10-xx [BSDI]
    491 				first external gamma; G customers
    492 BSD/386 0.9.4		1992-12-xx [BSDI]
    493 				would have been 1.0 except for request
    494 				for preliminary injunction
    495 BSD/386 1.0 		1993-03-xx [BSDI]
    496 				injunction denied; first official release
    497 NetBSD 0.8              1993-04-20 [NBD]
    498 4.4BSD                  1993-06-01 [USE]
    499 NetBSD 0.9              1993-08-23 [NBD]
    500 FreeBSD 1.0		1993-11-01 [FBD]
    501 FreeBSD 1.0.2		1993-11-14 [FBD]
    502 				supersedes 1.0 13 days after release.
    503 BSD/386 1.1		1994-02-xx [BSDI]
    504 4.4BSD Lite             1994-03-01 [USE]
    505 FreeBSD 1.1		1994-05-07 [FBD]
    506 FreeBSD 1.1.5		1994-06-30 [FBD]
    507 FreeBSD 1.1.5.1		1994-07-05 [FBD]
    508 				supersedes 1.1.5 5 days after release.
    509 NetBSD 1.0              1994-10-26 [NBD]
    510 386BSD 1.0              1994-11-12 [USE]
    511 FreeBSD 2.0		1994-11-23 [FBD]
    512 BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
    513 FreeBSD 2.0.5		1995-06-10 [FBD]
    514 BSD/OS 2.0.1		1995-06-xx [BSDI]
    515 4.4BSD Lite Release 2	1995-06-xx [44B]
    516 				the true final distribution from the CSRG
    517 FreeBSD 2.1.0		1995-11-19 [FBD]
    518 NetBSD 1.1              1995-11-26 [NBD]
    519 BSD/OS 2.1		1996-01-xx [BSDI]
    520 FreeBSD 2.1.5		1996-07-14 [FBD]
    521 NetBSD 1.2              1996-10-04 [NBD]
    522 OpenBSD 2.0             1996-10-18 [OBD]
    523 FreeBSD 2.1.6		1996-11-16 [FBD]
    524 FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
    525 Rhapsody		1997-xx-xx
    526 FreeBSD 2.1.7		1997-02-20 [FBD]
    527 BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
    528 FreeBSD 2.2.0		1997-03-16 [FBD]
    529 FreeBSD 2.2.1		1997-03-25 [FBD]
    530 FreeBSD 2.2.2		1997-05-16 [FBD]
    531 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
    532 OpenBSD 2.1             1997-06-01 [OBD]
    533 FreeBSD 2.2.5		1997-10-22 [FBD]
    534 OpenBSD 2.2             1997-12-01 [OBD]
    535 NetBSD 1.3              1998-01-04 [NBD]
    536 FreeBSD 2.2.6		1998-03-25 [FBD]
    537 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
    538 BSD/OS 3.1		1998-03-xx [BSDI]
    539 OpenBSD 2.3             1998-05-19 [OBD]
    540 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
    541 FreeBSD 2.2.7		1998-07-22 [FBD]
    542 BSD/OS 4.0		1998-08-xx [BSDI]
    543 				2-lock MP support, ELF executables
    544 FreeBSD 3.0		1998-10-16 [FBD]
    545 				FreeBSD-3.0 is a snapshot from -current,
    546 				while 3.1 and 3.2 are from 3.x-stable which
    547 				was branched quite some time after 3.0-release
    548 FreeBSD 2.2.8           1998-11-29 [FBD]
    549 OpenBSD 2.4             1998-12-01 [OBD]
    550 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
    551 FreeBSD 3.1		1999-02-15 [FBD]
    552 BSD/OS 4.0.1		1999-03-xx [BSDI]
    553 NetBSD 1.4              1999-05-12 [NBD]
    554 FreeBSD 3.2             1999-05-17 [FBD]
    555 OpenBSD 2.5             1999-05-19 [OBD]
    556 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
    557 FreeBSD 3.3             1999-09-17 [FBD]
    558 OpenBSD 2.6             1999-12-01 [OBD]
    559 FreeBSD 3.4             1999-12-20 [FBD]
    560 BSD/OS 4.1		1999-12-xx [BSDI]
    561 FreeBSD 4.0             2000-03-13 [FBD]
    562 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
    563 OpenBSD 2.7             2000-06-15 [OBD]
    564 FreeBSD 3.5		2000-06-24 [FBD]
    565 FreeBSD 4.1		2000-07-27 [FBD]
    566 FreeBSD 3.5.1		2000-07-28 [FBD]
    567 FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
    568 FreeBSD 4.2  		2000-11-21 [FBD]
    569 NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
    570 BSD/OS 4.2		2000-11-29 [BSDI]
    571 OpenBSD 2.8		2000-12-01 [OBD]
    572 NetBSD 1.5              2000-12-06 [NBD]
    573 Mac OS X 10.0           2001-03-24 [APL]
    574 FreeBSD 4.3  		2001-04-20 [FBD]
    575 OpenBSD 2.9  		2001-06-01 [OBD]
    576 NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
    577 NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
    578 FreeBSD 4.4  		2001-09-18 [FBD]
    579 Mac OS X 10.1		2001-09-29 [APL]
    580 OpenBSD 3.0		2001-12-01 [OBD]
    581 FreeBSD 4.5  		2002-01-29 [FBD]
    582 BSD/OS 4.3		2002-03-14 [WRS]
    583 OpenBSD 3.1		2002-05-19 [OBD]
    584 FreeBSD 4.6  		2002-06-15 [FBD]
    585 NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
    586 FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
    587 Mac OS X 10.2		2002-08-23 [APL]
    588 NetBSD 1.6		2002-09-14 [NBD]
    589 FreeBSD 4.7		2002-10-08 [FBD]
    590 OpenBSD 3.2		2002-11-01 [OBD]
    591 FreeBSD 5.0		2003-01-17 [FBD]
    592 				FreeBSD 5.0 is a separate branch off of
    593 				-current, similar to 3.0.
    594 FreeBSD 4.8		2003-04-03 [FBD]
    595 NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
    596 OpenBSD 3.3		2003-05-01 [OBD]
    597 BSD/OS 5.0		2003-05-?? [WRS]
    598 FreeBSD 5.1		2003-06-09 [FBD]
    599 Mac OS X 10.3		2003-10-24 [APL]
    600 FreeBSD 4.9		2003-10-28 [FBD]
    601 BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
    602 OpenBSD 3.4		2003-11-01 [OBD]
    603 FreeBSD 5.2		2004-01-12 [FBD]
    604 FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
    605 NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
    606 OpenBSD 3.5		2004-04-01 [OBD]
    607 FreeBSD 4.10		2004-05-27 [FBD]
    608 DragonFly 1.0		2004-07-12 [DFB]
    609 OpenBSD 3.6		2004-10-29 [OBD]
    610 FreeBSD 5.3		2004-11-06 [FBD]
    611 NetBSD 2.0		2004-12-09 [NBD]
    612 FreeBSD 4.11		2005-01-25 [FBD]
    613 DragonFly 1.2.0		2005-04-08 [DFB]
    614 NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
    615 Mac OS X 10.4		2005-04-29 [APL]
    616 FreeBSD 5.4		2005-05-09 [FBD]
    617 OpenBSD 3.7		2005-05-19 [OBD]
    618 NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
    619 OpenBSD 3.8		2005-11-01 [OBD]
    620 FreeBSD 6.0		2005-11-01 [FBD]
    621 NetBSD 2.1		2005-11-02 [NBD]
    622 NetBSD 3.0		2005-12-23 [NBD]
    623 DragonFly 1.4.0		2006-01-08 [DFB]
    624 FreeBSD 2.2.9		2006-04-01 [FBD]
    625 OpenBSD 3.9		2006-05-01 [OBD]
    626 FreeBSD 6.1		2006-05-08 [FBD]
    627 FreeBSD 5.5		2006-05-25 [FBD]
    628 NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
    629 DragonFly 1.6.0		2006-07-24 [DFB]
    630 OpenBSD 4.0		2006-11-01 [OBD]
    631 NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
    632 NetBSD 3.1		2006-11-04 [NBD]
    633 FreeBSD 6.2		2007-01-15 [FBD]
    634 DragonFly 1.8.0		2007-01-30 [DFB]
    635 OpenBSD 4.1		2007-05-01 [OBD]
    636 DragonFly 1.10.0	2007-08-06 [DFB]
    637 Mac OS X 10.5		2007-10-26 [APL]
    638 OpenBSD 4.2		2007-11-01 [OBD]
    639 NetBSD 4.0		2007-12-19 [NBD]
    640 FreeBSD 6.3		2008-01-18 [FBD]
    641 DragonFly 1.12.0	2008-02-26 [DFB]
    642 FreeBSD 7.0		2008-02-27 [FBD]
    643 OpenBSD 4.3		2008-05-01 [OBD]
    644 DragonFly 2.0.0		2008-07-21 [DFB]
    645 OpenBSD 4.4		2008-11-01 [OBD]
    646 FreeBSD 6.4		2008-11-28 [FBD]
    647 FreeBSD 7.1		2009-01-04 [FBD]
    648 DragonFly 2.2.0		2009-02-17 [DFB]
    649 NetBSD 5.0		2009-04-29 [NBD]
    650 OpenBSD 4.5		2009-05-01 [OBD]
    651 FreeBSD 7.2		2009-05-04 [FBD]
    652 Mac OS X 10.6		2009-06-08 [APL]
    653 NetBSD 5.0.1		2009-08-02 [NBD] (security/critical release)
    654 DragonFly 2.4.0		2009-09-16 [DFB]
    655 OpenBSD 4.6		2009-10-18 [OBD]
    656 FreeBSD 8.0		2009-11-26 [FBD]
    657 NetBSD 5.0.2		2010-02-12 [NBD] (security/critical release)
    658 FreeBSD 7.3		2010-03-23 [FBD]
    659 DragonFly 2.6.0		2010-03-28 [DFB]
    660 OpenBSD 4.7		2010-05-19 [OBD]
    661 FreeBSD 8.1		2010-07-24 [FBD]
    662 DragonFly 2.8.2		2010-10-30 [DFB]
    663 OpenBSD 4.8		2010-11-01 [OBD]
    664 NetBSD 5.1		2010-11-19 [NBD]
    665 FreeBSD 7.4		2011-02-24 [FBD]
    666 FreeBSD 8.2		2011-02-24 [FBD]
    667 DragonFly 2.10.1	2011-04-26 [DFB]
    668 OpenBSD 4.9		2011-05-01 [OBD]
    669 Mac OS X 10.7		2011-07-20 [APL]
    670 OpenBSD 5.0		2011-11-01 [OBD]
    671 FreeBSD 9.0		2012-01-12 [FBD]
    672 NetBSD 5.1.2		2012-02-02 [NBD] (security/critical release)
    673 DragonFly 3.0.1		2012-02-21 [DFB]
    674 FreeBSD 8.3		2012-04-18 [FBD]
    675 OpenBSD 5.1		2012-05-01 [OBD]
    676 Mac OS X 10.8		2012-07-25 [APL]
    677 NetBSD 6.0		2012-10-17 [NBD]
    678 OpenBSD 5.2		2012-11-01 [OBD]
    679 DragonFly 3.2.1		2012-11-02 [DFB]
    680 NetBSD 5.2		2012-12-03 [NBD]
    681 NetBSD 6.0.1		2012-12-26 [NBD] (security/critical release)
    682 FreeBSD 9.1		2012-12-30 [FBD]
    683 DragonFly 3.4.1		2013-04-29 [DFB]
    684 OpenBSD 5.3		2013-05-01 [OBD]
    685 NetBSD 6.0.2		2013-05-18 [NBD] (security/critical release)
    686 NetBSD 6.1		2013-05-18 [NBD]
    687 FreeBSD 8.4		2013-06-07 [FBD]
    688 NetBSD 6.1.1		2013-08-22 [NBD]
    689 NetBSD 5.1.3		2013-09-29 [NBD]
    690 NetBSD 5.2.1		2013-09-29 [NBD]
    691 FreeBSD 9.2		2013-09-30 [FBD]
    692 NetBSD 6.0.3		2013-09-30 [NBD]
    693 NetBSD 6.1.2		2013-09-30 [NBD]
    694 Mac OS X 10.9		2013-10-22 [APL]
    695 OpenBSD 5.4		2013-11-01 [OBD]
    696 DragonFly 3.6.0 	2013-11-25 [DFB]
    697 FreeBSD 10.0		2014-01-20 [FBD]
    698 NetBSD 5.1.4		2014-01-25 [NBD]
    699 NetBSD 5.2.2		2014-01-25 [NBD]
    700 NetBSD 6.0.4		2014-01-25 [NBD]
    701 NetBSD 6.1.3		2014-01-25 [NBD]
    702 DragonFly 3.6.1 	2014-02-22 [DFB]
    703 DragonFly 3.6.2		2014-04-10 [DFB]
    704 NetBSD 6.0.5		2014-04-12 [NBD]
    705 NetBSD 6.1.4		2014-04-12 [NBD]
    706 OpenBSD 5.5		2014-05-01 [OBD]
    707 DragonFly 3.8.0		2014-06-04 [DFB]
    708 DragonFly 3.8.1		2014-06-16 [DFB]
    709 DragonFly 3.6.3		2014-06-17 [DFB]
    710 FreeBSD 9.3		2014-07-05 [FBD]
    711 DragonFly 3.8.2		2014-08-08 [DFB]
    712 NetBSD 6.0.6		2014-09-22 [NBD]
    713 NetBSD 6.1.5		2014-09-22 [NBD]
    714 Mac OS X 10.10		2014-10-16 [APL]
    715 OpenBSD 5.6		2014-11-01 [OBD]
    716 FreeBSD 10.1		2014-11-14 [FBD]
    717 DragonFly 4.0.1		2014-11-25 [DFB]
    718 DragonFly 4.0.2		2015-01-07 [DFB]
    719 DragonFly 4.0.3		2015-01-21 [DFB]
    720 DragonFly 4.0.4		2015-03-09 [DFB]
    721 DragonFly 4.0.5		2015-03-23 [DFB]
    722 OpenBSD 5.7		2015-05-01 [OBD]
    723 DragonFly 4.2.0		2015-06-29 [DFB]
    724 FreeBSD 10.2            2015-08-13 [FBD]
    725 NetBSD 7.0		2015-09-25 [NBD]
    726 OS X 10.11		2015-09-30 [APL]
    727 OpenBSD 5.8		2015-10-18 [OBD]
    728 DragonFly 4.4.1		2015-12-07 [DFB]
    729 OpenBSD 5.9		2016-03-29 [OBD]
    730 FreeBSD 10.3		2016-04-04 [FBD]
    731 NetBSD 7.0.1		2016-05-22 [NBD]
    732 DragonFly 4.6.0		2016-08-02 [DFB]
    733 OpenBSD 6.0		2016-09-01 [OBD]
    734 macOS 10.12		2016-09-20 [APL]
    735 FreeBSD 11.0		2016-10-10 [FBD]
    736 NetBSD 7.0.2		2016-10-21 [NBD]
    737 NetBSD 7.1		2017-03-11 [NBD]
    738 DragonFly 4.8.0		2017-03-27 [DFB]
    739 OpenBSD 6.1		2017-04-11 [OBD]
    740 FreeBSD 11.1		2017-07-26 [FBD]
    741 macOS 10.13		2017-09-25 [APL]
    742 FreeBSD 10.4		2017-10-03 [FBD]
    743 OpenBSD 6.2		2017-10-09 [OBD]
    744 DragonFly 5.0.0		2017-10-16 [DFB]
    745 DragonFly 5.0.1		2017-11-06 [DFB]
    746 DragonFly 5.0.2		2017-12-04 [DFB]
    747 NetBSD 7.1.1		2017-12-22 [NBD]
    748 NetBSD 7.1.2		2018-03-15 [NBD]
    749 OpenBSD 6.3		2018-04-02 [OBD]
    750 DragonFly 5.2.0		2018-04-10 [DFB]
    751 DragonFly 5.2.1		2018-05-20 [DFB]
    752 DragonFly 5.2.2		2018-06-18 [DFB]
    753 FreeBSD 11.2		2018-06-27 [FBD]
    754 NetBSD 8.0		2018-08-17 [NBD]
    755 
    756 Bibliography
    757 ------------------------
    758 
    759 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
    760 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
    761 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
    762 
    763 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
    764 Company, Inc., 1994. ISBN 0-201-54777-5
    765 
    766 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
    767 Quarterman. The Design and Implementation of the 4.4BSD Operating
    768 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
    769 
    770 McKusick, Marshall Kirk, George Neville-Neil. The Design and
    771 Implementation of the FreeBSD Operating System.
    772 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
    773 
    774 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
    775 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
    776 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
    777 
    778 Doug McIlroy. Research Unix Reader.
    779 
    780 Michael G. Brown. The Role of BSD in the Development of Unix.
    781 Presented to the Tasmanian Unix Special Interest Group of the
    782 Australian Computer Society, Hobart, August 1993.
    783 
    784 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
    785 URL: http://www.byte.com/art/9410/sec8/art3.htm
    786 
    787 Andreas Klemm, Lars Kller. If you're going to San Francisco ...
    788 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
    789 
    790 BSD Release Announcements collection.
    791 URL: https://www.FreeBSD.org/releases/
    792 
    793 BSD Hypertext Man Pages
    794 URL: https://www.FreeBSD.org/cgi/man.cgi
    795 
    796 UNIX history graphing project
    797 URL: http://minnie.tuhs.org/Unix_History/index.html
    798 
    799 UNIX history
    800 URL: http://www.levenez.com/unix/
    801 
    802 James Howard: The BSD Family Tree
    803 URL: http://ezine.daemonnews.org/200104/bsd_family.html
    804 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
    805 
    806 
    807 Acknowledgments
    808 ---------------
    809 
    810 Josh Gilliam for suggestions, bug fixes, and finding very old
    811 original BSD announcements from Usenet or tapes.
    812 
    813 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
    814 
    815 --
    816 Copyright (c) 1997-2012 Wolfram Schneider <wosch (a] FreeBSD.ORG>
    817 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
    818 
    819 $FreeBSD: head/share/misc/bsd-family-tree 335811 2018-06-30 01:04:37Z eadler $
    820 $NetBSD: bsd-family-tree,v 1.69 2018/07/25 03:26:40 eadler Exp $
    821