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authorJim Meyering <jim@meyering.net>1994-05-08 16:16:03 +0000
committerJim Meyering <jim@meyering.net>1994-05-08 16:16:03 +0000
commit31c8ce9ef8cd00a02f9f1e42cca48e08046435aa (patch)
treedd22f979a8c95dd7125cb9e5a3f52addf3af837c /src
parenta99f319d1252b1c40a3641f5516b8bf4b7dd5c53 (diff)
downloadcoreutils-31c8ce9ef8cd00a02f9f1e42cca48e08046435aa.tar.xz
.
Diffstat (limited to 'src')
-rw-r--r--src/hostname.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/hostname.c b/src/hostname.c
new file mode 100644
index 000000000..dcb8074ec
--- /dev/null
+++ b/src/hostname.c
@@ -0,0 +1,101 @@
+/* hostname - set or print the name of current host system
+ Copyright (C) 1994 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Jim Meyering <meyering@comco.com> */
+
+#ifdef HAVE_CONFIG_H
+#if defined (CONFIG_BROKETS)
+/* We use <config.h> instead of "config.h" so that a compilation
+ using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
+ (which it would do because it found this file in $srcdir). */
+#include <config.h>
+#else
+#include "config.h"
+#endif
+#endif
+
+#include <stdio.h>
+
+#include "system.h"
+#include "long-options.h"
+
+void error ();
+char *xgethostname ();
+
+/* The name this program was run with. */
+char *program_name;
+
+static void
+usage (status)
+ int status;
+{
+ if (status != 0)
+ fprintf (stderr, "Try `%s --help' for more information.\n",
+ program_name);
+ else
+ {
+ printf ("\
+Usage: %s [NAME]\n\
+ or: %s OPTION\n\
+\n\
+ --help display this help and exit\n\
+ --version output version information and exit\n\
+"
+ , program_name, program_name);
+ }
+ exit (status);
+}
+
+void
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ char *hostname;
+
+ program_name = argv[0];
+
+ parse_long_options (argc, argv, "hostname", usage);
+
+#ifdef HAVE_SETHOSTNAME
+ if (argc == 2)
+ {
+ int err;
+
+ /* Set hostname to argv[1]. */
+ err = sethostname (argv[1], strlen (argv[1]));
+ if (err != 0)
+ error (1, errno, "%s", argv[1]);
+ exit (0);
+ }
+#endif
+
+ if (argc == 1)
+ {
+ hostname = xgethostname ();
+ if (hostname == NULL)
+ error (1, errno, "cannot determine hostname");
+ printf ("%s\n", hostname);
+ }
+ else
+ {
+ error (2, 0, "too many arguments");
+ usage (1);
+ }
+
+ exit (0);
+}