home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1983, 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)hostname.c 5.4 (Berkeley) 5/31/90";
- #endif /* not lint */
-
- #include <stdio.h>
- #include <sys/param.h>
-
- main(argc,argv)
- int argc;
- char **argv;
- {
- extern int optind;
- int ch, sflag;
- char hostname[MAXHOSTNAMELEN], *p, *index();
-
- sflag = 0;
- while ((ch = getopt(argc, argv, "s")) != EOF)
- switch((char)ch) {
- case 's':
- sflag = 1;
- break;
- case '?':
- default:
- fputs("hostname [-s] [hostname]\n", stderr);
- exit(1);
- }
- argv += optind;
-
- if (*argv) {
- if (sethostname(*argv, strlen(*argv))) {
- perror("sethostname");
- exit(1);
- }
- } else {
- if (gethostname(hostname, sizeof(hostname))) {
- perror("gethostname");
- exit(1);
- }
- if (sflag && (p = index(hostname, '.')))
- *p = '\0';
- puts(hostname);
- }
- exit(0);
- }
-