BOFH

from Jargon File (4.4.4, 14 Aug 2003)

BOFH
 //, n.

   [common] Acronym, Bastard Operator From Hell. A system administrator
   with absolutely no tolerance for {luser}s. "You say you need more
   filespace? <massive-global-delete> Seems to me you have plenty
   left..." Many BOFHs (and others who would be BOFHs if they could get
   away with it) hang out in the newsgroup alt.sysadmin.recovery,
   although there has also been created a top-level newsgroup hierarchy
   (bofh.*) of their own.

   Several people have written stories about BOFHs. The set usually
   considered canonical is by Simon Travaglia and may be found at the
   Bastard Home Page. BOFHs and BOFH wannabes hang out on {scary devil
   monastery} and wield {LART}s.

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

Bastard Operator From Hell
BOFH

   <humour> (BOFH) A rogue {network operator} character invented
   by Simon Travaglia <[email protected]>, regularly featured
   in "Computing" and "DATAMATION" magazine.

   See also: {Dilbert}.

   (http://angelfire.com/bc/simont/index.html).

   (1999-09-17)

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

BOFH
       Bastard Operator From Hell (slang)