1 /* whoami -- print effective userid
2 Copyright (C) 89,90,91,92,93,94,95,96,1997 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 /* Equivalent to `id -un'. */
19 /* Written by Richard Mlynarik. */
23 #include <sys/types.h>
29 /* The name this program was run with. */
32 /* If nonzero, display usage information and exit. */
35 /* If nonzero, print the version on standard output and exit. */
36 static int show_version;
38 static struct option const long_options[] =
40 {"help", no_argument, &show_help, 1},
41 {"version", no_argument, &show_version, 1},
49 fprintf (stderr, _("Try `%s --help' for more information.\n"),
53 printf (_("Usage: %s [OPTION]...\n"), program_name);
55 Print the user name associated with the current effective user id.\n\
58 --help display this help and exit\n\
59 --version output version information and exit\n"));
60 puts (_("\nReport bugs to <bug-sh-utils@gnu.org>."));
66 main (int argc, char **argv)
68 register struct passwd *pw;
72 program_name = argv[0];
73 setlocale (LC_ALL, "");
74 bindtextdomain (PACKAGE, LOCALEDIR);
77 while ((c = getopt_long (argc, argv, "", long_options, NULL)) != -1)
91 printf ("whoami (%s) %s\n", GNU_PACKAGE, VERSION);
109 fprintf (stderr, _("%s: cannot find username for UID %u\n"),
110 program_name, (unsigned) uid);