Sun seems to care about Solaris versus SunOS branding...
Here is a mapping table that maps the `uname -sr` values to Sun's marketing
names.
SunOS 2.x == SunOS 2.x
SunOS 3.x == SunOS 3.x
Starting with 4.1.1B of SunOS we have the 'Solaris 1.0' release.
SunOS 4.1.1B == Solaris 1.0
SunOS 4.1.2 == Solaris 1.0.1
SunOS 4.1.3 == Solaris 1.1
SunOS 4.1.3C == Solaris 1.1C
SunOS 4.1.3_U1 == Solaris 1.1.1
SunOS 4.1.3_U1B == Solaris 1.1.1 B
SunOS 4.1.4 == Solaris 1.1.2
The SunOS 5.x uname output maps to the Solaris 2.x numbers thru 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 number based on the second digit
SunOS 5.7 == Solaris 7
SunOS 5.8 == Solaris 8
SunOS 5.9 == Solaris 9
The common terminology is to use the name "SunOS ..." to designate SunOS 2.x,
3.x, 4.x, and "Solaris ..." to designate SunOS 5.x.
