thodg/slides/bsd.md

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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.md

• UNIX
  
  Thomas de Grivel <thoxdg@gmail.com>
  
  https://kmx.io/
  
  2020-03-11
  
  # UNIX
  
  ## History
  
  ### Diagram
  
  ![UNIX](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 (1/2)
  
      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.
  
  ### BSD License (2/2)
  
      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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