Sun claim that Solaris is not just an operating system but an
"operating environment".
Solaris 1.x was a retroactive (marketing?) name for
SunOS4.1.x (where x@#=1).
Solaris 2.x (which is the first version most people call
"Solaris") includes SunOS5.x, which is an SVR4-derived Unix,
Version 2.7 ("Solaris 7") was around in 1999-03-02. Version
2.8 was released in June 2000. Current version: 9, as of
2002-07-15.
(2002-07-15)