usage            5847 ext/nkf/nkf-utf8/nkf.c 		    usage();
usage             111 gc.c               struct rusage usage;
usage             113 gc.c               getrusage(RUSAGE_SELF, &usage);
usage             114 gc.c               time = usage.ru_utime;
usage              73 ruby.c             int usage;
usage             758 ruby.c         	    usage(origarg.argv[0]);
usage            1005 ruby.c         		usage(origarg.argv[0]);