diff options
author | Jim Meyering <jim@meyering.net> | 1994-05-08 16:16:03 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1994-05-08 16:16:03 +0000 |
commit | 31c8ce9ef8cd00a02f9f1e42cca48e08046435aa (patch) | |
tree | dd22f979a8c95dd7125cb9e5a3f52addf3af837c /src | |
parent | a99f319d1252b1c40a3641f5516b8bf4b7dd5c53 (diff) | |
download | coreutils-31c8ce9ef8cd00a02f9f1e42cca48e08046435aa.tar.xz |
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Diffstat (limited to 'src')
-rw-r--r-- | src/hostname.c | 101 |
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); +} |