1 /* whoami -- print effective userid
2 Copyright (C) 89,90, 1991-1997, 1999-2002 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 /* Equivalent to `id -un'. */
19 /* Written by Richard Mlynarik. */
23 #include <sys/types.h>
28 #include "long-options.h"
30 /* The official name of this program (e.g., no `g' prefix). */
31 #define PROGRAM_NAME "whoami"
33 #define AUTHORS "Richard Mlynarik"
35 /* The name this program was run with. */
38 static struct option const long_options[] =
47 fprintf (stderr, _("Try `%s --help' for more information.\n"),
51 printf (_("Usage: %s [OPTION]...\n"), program_name);
53 Print the user name associated with the current effective user id.\n\
57 fputs (HELP_OPTION_DESCRIPTION, stdout);
58 fputs (VERSION_OPTION_DESCRIPTION, stdout);
59 printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
65 main (int argc, char **argv)
67 register struct passwd *pw;
71 initialize_main (&argc, &argv);
72 program_name = argv[0];
73 setlocale (LC_ALL, "");
74 bindtextdomain (PACKAGE, LOCALEDIR);
77 atexit (close_stdout);
79 parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
82 while ((c = getopt_long (argc, argv, "", long_options, NULL)) != -1)
104 fprintf (stderr, _("%s: cannot find username for UID %u\n"),
105 program_name, (unsigned) uid);