<Storage, operating SyStem> (GFR) An ITS and LISP Machine utility to remove fileS according to Some program-automated or Semi-automatic manual procedure, eSpecially one deSigned to reclaim maSSStorage Space or reduce name-Space clutter (the original GFR actually moved fileS to tape). See alSo prowler, reaper. Compare GC, which diScardS only provably worthleSSStuff. (1996-06-20)