V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
Hewlett Packard / UniX (Unix), "HP/UX"
The Free On-line Dictionary of Computing (30 December 2018):
The version of Unix running on
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".