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Date :
2025-01-01T09:24:36
maint: run 'make update-copyright'
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Sun Microsystems seemed to care about Solaris versus SunOS branding...
Solaris also has a fork named Illumos, which is free (but not GPL-compatible)
software and which has behavior close to that of Solaris 11.
See <https://illumos.org>.
Here is a mapping table that maps the `uname -sr` values to the marketing names.
SunOS 1.x == SunOS 1.x
SunOS 2.x == SunOS 2.x
SunOS 3.x == SunOS 3.x
SunOS 4.0 == SunOS 4.0
SunOS 4.0.x == SunOS 4.0.x
Starting with 4.1.1B of SunOS we have the 'Solaris 1.0' release.
SunOS 4.1.1B == Solaris 1.0
SunOS 4.1.1.1 == " "
SunOS 4.1.1_U1 == " "
SunOS 4.1.2 == Solaris 1.0.1
SunOS 4.1.3 == Solaris 1.1A
SunOS 4.1.3B == Solaris 1.1B
SunOS 4.1.3C == Solaris 1.1C
SunOS 4.1.3_U1 == Solaris 1.1.1
SunOS 4.1.3_U1B == Solaris 1.1.1B
SunOS 4.1.4 == Solaris 1.1.2
The SunOS 5.x uname output maps to the Solaris 2.x numbers through 2.6.
SunOS 5.0 == Solaris 2.0
SunOS 5.1 == Solaris 2.1
SunOS 5.2 == Solaris 2.2
SunOS 5.3 == Solaris 2.3
SunOS 5.4 == Solaris 2.4
SunOS 5.5 == Solaris 2.5
SunOS 5.5.1 == Solaris 2.5.1
SunOS 5.6 == Solaris 2.6
After SunOS 5.6, they started numbering based on the second digit.
SunOS 5.7 == Solaris 7
SunOS 5.8 == Solaris 8
SunOS 5.9 == Solaris 9
SunOS 5.10 == Solaris 10
SunOS 5.11 == Solaris 11 or Illumos
The common terminology is to use the name "SunOS ..." to designate SunOS 2.x,
3.x, 4.x, and "Solaris ..." or "Illumos" to designate SunOS 5.x.
Most of these operating systems are obsolete. As of 2024-02-17 only
Solaris 10 and 11.3 (both end-of-life January 2027) and Solaris 11.4
(end-of-life November 2037) are supported by Oracle and are therefore of
practical porting concern for GNU applications. For the current list, see
<https://en.wikipedia.org/wiki/Solaris_(operating_system)#Version_history>.
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