(du invocation): Describe new option: -0, --null.
[coreutils.git] / src / sync.c
blob6d98b5d4fad193490edea507053a88c3753a4022
1 /* sync - update the super block
2 Copyright (C) 1994-2003 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)
7 any later version.
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 /* Written by Jim Meyering */
20 #include <config.h>
21 #include <stdio.h>
22 #include <sys/types.h>
24 #include "system.h"
25 #include "error.h"
26 #include "long-options.h"
28 /* The official name of this program (e.g., no `g' prefix). */
29 #define PROGRAM_NAME "sync"
31 #define AUTHORS "Jim Meyering"
33 /* The name this program was run with. */
34 char *program_name;
36 void
37 usage (int status)
39 if (status != 0)
40 fprintf (stderr, _("Try `%s --help' for more information.\n"),
41 program_name);
42 else
44 printf (_("Usage: %s [OPTION]\n"), program_name);
45 fputs (_("\
46 Force changed blocks to disk, update the super block.\n\
47 \n\
48 "), stdout);
49 fputs (HELP_OPTION_DESCRIPTION, stdout);
50 fputs (VERSION_OPTION_DESCRIPTION, stdout);
51 printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
53 exit (status);
56 int
57 main (int argc, char **argv)
59 initialize_main (&argc, &argv);
60 program_name = argv[0];
61 setlocale (LC_ALL, "");
62 bindtextdomain (PACKAGE, LOCALEDIR);
63 textdomain (PACKAGE);
65 atexit (close_stdout);
67 parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE, VERSION,
68 usage, AUTHORS, (char const *) NULL);
70 if (1 < argc)
71 error (0, 0, _("ignoring all arguments"));
73 sync ();
74 exit (EXIT_SUCCESS);