src/true.c

   1 #include <config.h>
   2 #include <stdio.h>
   3 #include <sys/types.h>
   4 #include "system.h"
   5 #include "version-etc.h"
   6
   7 #define PROGRAM_NAME "true"
   8 #define AUTHORS "no one"
   9
  10 /* The name this program was run with. */
  11 char *program_name;
  12
  13 void
  14 usage (int status)
  15 {
  16   printf (_("\
  17 Usage: %s\n\
  18   or:  %s OPTION\n\
  19 Exit with a status code indicating success.\n\
  20 These option names may not be abbreviated.
  21 \n\
  22   --help      display this help and exit\n\
  23   --version   output version information and exit\n\
  24 ")
  25           , program_name, program_name);
  26   puts (_("\nReport bugs to <bug-sh-utils@gnu.org>."));
  27   exit (status);
  28 }
  29
  30 int
  31 main (int argc, char **argv)
  32 {
  33   program_name = argv[0];
  34   setlocale (LC_ALL, "");
  35   bindtextdomain (PACKAGE, LOCALEDIR);
  36   textdomain (PACKAGE);
  37
  38   /* Recognize --help or --version only if it's the only command-line
  39      argument and if POSIXLY_CORRECT is not set.  */
  40   if (argc == 2 && getenv ("POSIXLY_CORRECT") == NULL)
  41     {
  42       if (STREQ (argv[1], "--help"))
  43         usage (EXIT_SUCCESS);
  44
  45       if (STREQ (argv[1], "--version"))
  46         version_etc (stdout, PROGRAM_NAME, GNU_PACKAGE, VERSION, AUTHORS);
  47     }
  48
  49   exit (EXIT_SUCCESS);
  50 }