== Useful Technical Information for Unix Calls ==

The first and most useful bit of information is the type of Unix you are running. This is known as your *variant* of Unix. Likely options or candidates include IBM **AIX**, Oracle **Solaris**, **HPUX**, **Digital Unix** (also known as **Tru64** and **OSF/1**), **Linux**, or SGI **IRIX**. 

The version, name & serial number of the server, hardware / server type are also very much appreciated.