system> The version of Unix running on Hewlett-Packardworkstations. HP-UX conforms to X/Open' s Portability Guide Issue 4 (XPG4), Federal Information Processing specification (FIPs) 151.1, POsIX 1003.1, POsIX 1003.2, AT&T' ssystem V Interface Definition 2 (sVID 2). HP-UX incorporatesselected features from the University of California at Berkeley software Distribution 4.3 (4.3BsD). It is known by some as "HP-sUX". [Features?] (1997-05-12)