620 static	char	*usefile;  variable
776 	if ((usefile = getenv("TAPE")) == (char *)NULL) {  in main()
783 				usefile = NULL;  in main()
803 			usefile = *argv++;  in main()
959 	if (usefile == NULL)  in main()
1011 		if (cflag && usefile != NULL)  {  in main()
1037 			if (strcmp(usefile, "-") != 0) {  in main()
1085 		if (strcmp(usefile, "-") == 0) {  in main()
1094 				mt = open(usefile,  in main()
1097 				mt = open(usefile, O_RDWR);  in main()
1100 				if (cflag == 0 || (mt =  creat(usefile, 0666))  in main()
1102 				vperror(1, "%s", usefile);  in main()
1158 		if (strcmp(usefile, "-") == 0) {  in main()
1163 		} else if ((mt = open(usefile, 0)) < 0)  in main()
1164 			vperror(1, "%s", usefile);  in main()
1168 		if (strcmp(usefile, "-") != 0) {  in main()
4873 	if (strcmp(usefile, "-") == 0) {  in newvol()
4876 		mt = open(usefile, dumping ? update : 0);  in newvol()
4882 		    dumping ? gettext("output") : gettext("input"), usefile);  in newvol()
4884 		dlog("update=%d, usefile=%s ", update, usefile);  in newvol()
5455 	if ((usefile = strtok(bp, " \t")) == NULL) {  in defset()
5479 	dlog("defset: archive='%s'; usefile='%s'\n", arch, usefile);  in defset()
9242 		    usefile, compress_opt);  in compress_back()
9247 		    usefile, NULL);  in compress_back()
9253 		(void) rename(tfname, usefile);  in compress_back()
9270 	if ((fp = fopen(usefile, "r")) != NULL) {  in check_compression()
9313 	(void) strcpy(tfname, usefile);  in add_suffix()
9348 		(void) rename(usefile, tfname);  in decompress_file()
9354 			    "'%s'...\n"), usefile, compress_opt);  in decompress_file()
9366 		*(usefile + strlen(usefile) - strlen(suffix)) = '\0';  in decompress_file()
9379 		    "'%s'...\n"), usefile, compress_opt);  in compress_file()
9408 		    "'%s'...\n"), usefile, compress_opt);  in uncompress_file()
9435 	int	nlen = strlen(usefile);  in check_suffix()
9441 		if (strcmp(usefile + nlen - slen, suf[i]) == 0)  in check_suffix()