A Few Words
Solaris – Sun Unix-based user environment, including the Unix operating system and an X11-based window system. Solaris 1.x is a retroactive (marketing?) name for SunOS4.1.x (x>=1), a BSD-like version of Unix with some SVR4 features, along with OpenWindows 3.0. Solaris 2.x (which is what most poeple mean by “Solaris”) includes SunOS5.x, which is an SVR4-derived Unix, along with OpenWindows 3.x and tooltalk.