1 /* unlink utility for GNU.
2 Copyright (C) 2001-2023 Free Software Foundation, Inc.
3
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 3 of the License, or
7 (at your option) any later version.
8
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.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 /* Written by Michael Stone */
18
19 /* Implementation overview:
20
21 Simply call the system 'unlink' function */
22
23 #include <config.h>
24 #include <stdio.h>
25 #include <sys/types.h>
26
27 #include "system.h"
28 #include "long-options.h"
29 #include "quote.h"
30
31 /* The official name of this program (e.g., no 'g' prefix). */
32 #define PROGRAM_NAME "unlink"
33
34 #define AUTHORS proper_name ("Michael Stone")
35
36 void
usage(int status)37 usage (int status)
38 {
39 if (status != EXIT_SUCCESS)
40 emit_try_help ();
41 else
42 {
43 printf (_("\
44 Usage: %s FILE\n\
45 or: %s OPTION\n"), program_name, program_name);
46 fputs (_("Call the unlink function to remove the specified FILE.\n\n"),
47 stdout);
48 fputs (HELP_OPTION_DESCRIPTION, stdout);
49 fputs (VERSION_OPTION_DESCRIPTION, stdout);
50 emit_ancillary_info (PROGRAM_NAME);
51 }
52 exit (status);
53 }
54
55 int
main(int argc,char ** argv)56 main (int argc, char **argv)
57 {
58 initialize_main (&argc, &argv);
59 set_program_name (argv[0]);
60 setlocale (LC_ALL, "");
61 bindtextdomain (PACKAGE, LOCALEDIR);
62 textdomain (PACKAGE);
63
64 atexit (close_stdout);
65
66 parse_gnu_standard_options_only (argc, argv, PROGRAM_NAME, PACKAGE_NAME,
67 Version, true, usage, AUTHORS,
68 (char const *) nullptr);
69
70 if (argc < optind + 1)
71 {
72 error (0, 0, _("missing operand"));
73 usage (EXIT_FAILURE);
74 }
75
76 if (optind + 1 < argc)
77 {
78 error (0, 0, _("extra operand %s"), quote (argv[optind + 1]));
79 usage (EXIT_FAILURE);
80 }
81
82 if (unlink (argv[optind]) != 0)
83 error (EXIT_FAILURE, errno, _("cannot unlink %s"), quoteaf (argv[optind]));
84
85 return EXIT_SUCCESS;
86 }
87