a/ux

from The Free On-line Dictionary of Computing (8 July 2008)

A/UX

   <operating system> (Apple's UniX) {Apple}'s first version of
   {Unix} for {Macintosh} computers.  A/UX merges the {Macintosh
   Finder} ({GUI}) with a Unix core, offering functions from both
   systems.  It will run on some late-model {Motorola 68000}
   Macs, but not on the {Power Macintosh}.

   A/UX is based on {AT&T} Unix {System V}.2.2 with numerous
   extensions from V.3, V.4 and {BSD} 4.2/4.3.  It also provides
   full {POSIX} compliance.

   A/UX 3.x.x incorporates {System 7} for the Macintosh, thus
   supporting the vast majority of Macintosh {applications}.
   System 7 and Unix are fully integrated under A/UX 3.x.x with
   the Unix file system being seen as a disk drive by the Finder.

   jagubox's A/UX Home Page
   (http://jagubox.gsfc.nasa.gov/aux/Info/FAQ.auxl).

   (1997-12-13)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

AUX
       Apple UniX (Apple, Unix), "A/UX"

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

AUX
       Auxiliary Power Unit (Airbus, A380)