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Copyright (c) <year> <copyright holder>.
All rights reserved.

Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the <organization>. The name of the <organization> may not be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

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• bsd/index.md

• UNIX
  
  Thomas de Grivel <thoxdg@gmail.com>
  
  https://kmx.io/
  
  2020-03-11
  
  # UNIX
  
  ## History
  
  ### Diagram
  
  ![UNIX](https://git.kmx.io/thodg/slides/_blob/master/bsd/unix-history.png)
  
  ### Multics
  
  1960
  
  Companies
  
    - MIT
  
    - AT\&T Bell labs
  
    - General Electric
  
  ### UNIX
  
  AT\&T Bell Labs 1970
  
  Developers
  
    - Ken Thompson
  
    - Dennis Ritchie
  
  ### Berkeley Unix
  
  1974
  
  Licensed by AT\&T
  
  ### Berkeley Software Distribution
  
  1979
  
    - `vi`
  
    - `csh`
  
  Licensed by AT\&T
  
  ### BSD License
  
      Copyright (c) <year> <copyright holder>.
      All rights reserved.
  
      Redistribution and use in source and binary forms are permitted
      provided that the above copyright notice and this paragraph are
      duplicated in all such forms and that any documentation,
      advertising materials, and other materials related to such
      distribution and use acknowledge that the software was developed
      by the <organization>. The name of the <organization> may not be
      used to endorse or promote products derived from this software
      without specific prior written permission.
      THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
      IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
      WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  
  ### Net/1
  
  June 1989
  
  Basis for
  
    - NetBSD
  
    - FreeBSD
  
  Under BSD License
  
  ### Minix
  
  Andrew S. Tannenbaum
  
    - For teaching
  
    - Not BSD
  
    - GPL
  
  ### Linux
  
  Linus Torvalds
  
    - Inspired by Minix
  
    - Not BSD
  
    - GPL
  
  ### NetBSD
  
  Computer Systems Research Group of the University of California,
  Berkeley
  
    - Started in 1993 from Net/2 and 386BSD
  
    - BSD License (two, three, and four-clause variants)
  
    - **Portable**
  
  Founders :
  
    - Chris Demetriou
  
    - Theo de Raadt
  
    - Adam Glass
  
    - Charles Hannum
  
  ### FreeBSD
  
    - Started in 1993 also from 386BSD
  
    - FreeBSD 2.0 in 1994, without code from AT\&T
  
    - **Fast** `jemalloc` in base
  
  ### OpenBSD
  
  Theo de Raadt
  
    - forked from NetBSD in 1995
  
    - **Secure by default**</span>
  
    - Home of CARP, cwm, httpd, LibreSSL, OpenBGPD, OpenIKED,
      **OpenNTPD**, OpenOSPFD, OpenRsync, OpenSMTPD,
      **OpenSSH**, PF, pfsync, sndio, spamd, Xenocara
  
  ### Darwin
  
    - Forked from FreeBSD by Apple Inc. in 2000
  
    - Includes code from NeXTSTEP and Mach
  
    - Basis for MacOS X, iOS, iPadOS
  
    - Apple Public Source License (APSL), with closed-source drivers
  

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