prowler

prowler n.  [UNIX] A {daemon} that is run periodically (typically
   once a week) to seek out and erase {core} files, truncate
   administrative logfiles, nuke `lost+found' directories, and
   otherwise clean up the {cruft} that tends to pile up in the
   corners of a file system.  See also {GFR}, {reaper},
   {skulker}.