Solaris

Solaris is a UNIX operating system made at Sun Microsystems. Before version 2 it was BSD based, after version 2 it was based on SVR4. The current version is Solaris_10. It works on x86 (PC) hardware but is more commonly found on Sparc hardware.

I'll never understand why they don't add a little more to the single "hostname" binary for example, so that when you run "hostname foo" it would update the +5 neccesary files that need touched to change ones hostname. You might want to try

sys-unconfig