< operating system > The version of Unix running on Hewlett-Packard workstations .
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 's System V Interface Definition 2 ( SVID 2). HP-UX incorporates selected 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)