chown LIST
               Changes the owner (and group) of a list of files.  The first
               two elements of the list must be the numeric uid and gid, in
               that order.  A value of -1 in either position is interpreted by
               most systems to leave that value unchanged.  Returns the number
               of files successfully changed.

                   $cnt = chown $uid, $gid, 'foo', 'bar';
                   chown $uid, $gid, @filenames;