diff options
Diffstat (limited to 'bin/hostname/hostname.c')
-rw-r--r-- | bin/hostname/hostname.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/bin/hostname/hostname.c b/bin/hostname/hostname.c new file mode 100644 index 0000000..afee46a --- /dev/null +++ b/bin/hostname/hostname.c @@ -0,0 +1,87 @@ +/* + * Copyright (c) 1988, 1993 + * The 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 +static char copyright[] = +"@(#) Copyright (c) 1988, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)hostname.c 8.1 (Berkeley) 5/31/93"; +#endif /* not lint */ + +#include <sys/param.h> + +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +int +main(argc,argv) + int argc; + char *argv[]; +{ + extern int optind; + int ch, sflag; + char *p, hostname[MAXHOSTNAMELEN]; + + sflag = 0; + while ((ch = getopt(argc, argv, "s")) != EOF) + switch (ch) { + case 's': + sflag = 1; + break; + case '?': + default: + (void)fprintf(stderr, + "usage: hostname [-s] [hostname]\n"); + exit(1); + } + argc -= optind; + argv += optind; + + if (*argv) { + if (sethostname(*argv, strlen(*argv))) + err(1, "sethostname"); + } else { + if (gethostname(hostname, sizeof(hostname))) + err(1, "gethostname"); + if (sflag && (p = strchr(hostname, '.'))) + *p = '\0'; + (void)printf("%s\n", hostname); + } + exit(0); +} |