1 /* hostname - set or print the name of current host system
2 Copyright (C) 94, 95, 96, 1997 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* Jim Meyering <meyering@comco.com> */
22 #include <sys/types.h>
25 #include "long-options.h"
28 #if !defined(HAVE_SETHOSTNAME) && defined(HAVE_SYSINFO) && \
29 defined (HAVE_SYS_SYSTEMINFO_H) && defined(HAVE_LIMITS_H)
31 #include <sys/systeminfo.h>
34 sethostname (name, namelen)
38 /* Using sysinfo() is the SVR4 mechanism to set a hostname. */
41 result = sysinfo (SI_SET_HOSTNAME, name, namelen);
43 return (result == -1 ? result : 0);
46 #define HAVE_SETHOSTNAME 1 /* Now we have it... */
49 char *xgethostname ();
51 /* The name this program was run with. */
58 fprintf (stderr, _("Try `%s --help' for more information.\n"),
65 Print the hostname of the current system.\n\
67 --help display this help and exit\n\
68 --version output version information and exit\n\
70 , program_name, program_name);
71 puts (_("\nReport bugs to <sh-utils-bugs@gnu.ai.mit.edu>."));
77 main (int argc, char **argv)
81 program_name = argv[0];
82 setlocale (LC_ALL, "");
83 bindtextdomain (PACKAGE, LOCALEDIR);
86 parse_long_options (argc, argv, "hostname", GNU_PACKAGE, VERSION, usage);
88 #ifdef HAVE_SETHOSTNAME
93 /* Set hostname to argv[1]. */
94 err = sethostname (argv[1], strlen (argv[1]));
96 error (1, errno, "%s", argv[1]);
102 _("cannot set hostname; this system lacks the functionality"));
107 hostname = xgethostname ();
108 if (hostname == NULL)
109 error (1, errno, _("cannot determine hostname"));
110 printf ("%s\n", hostname);
114 error (2, 0, _("too many arguments"));