printf("%s from-name to-name\n", argv[0]);
printf("usage: %s from-name to-name\n", argv[0]);
renamefile(argc, argv)	int argc;	char *argv[];{	if (argc < 2 && !another(&argc, &argv, "from-name"))		goto usage;	if ((argc < 3 && !another(&argc, &argv, "to-name")) || argc > 3) {usage:		printf("%s from-name to-name\n", argv[0]);		code = -1;		return;	}	if (command("RNFR %s", argv[1]) == CONTINUE)		(void)command("RNTO %s", argv[2]);}