How to find VERSION of UNIX OS

[Doug Gwyn]

In article <1991May24.163048.4493 at ida.liu.se> larvi at ida.liu.se (Lars Viklund) writes:
>uname(1) exists in SunOS 4.1.1, but not in 4.0.3. I'm nor sure about 4.1.

It certainly does exist on all versions of SunOS that I've ever used.
You may have to install the "optional" System V software package when
you configure your system, and perhaps need to include /usr/5bin in
your command search path.  On my SunOS 4.0.3 system that's where it is.