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 [ignored command line arguments]\n\
  18   or:  %s OPTION\n\
  19 Exit with a status code indicating success.\n\
  20 \n\
  21 These option names may not be abbreviated.\n\
  22 \n\
  23   --help      display this help and exit\n\
  24   --version   output version information and exit\n\
  25 ")
  26           , program_name, program_name);
  27   puts (_("\nReport bugs to <bug-sh-utils@gnu.org>."));
  28   exit (status);
  29 }
  30
  31 int
  32 main (int argc, char **argv)
  33 {
  34   program_name = argv[0];
  35   setlocale (LC_ALL, "");
  36   bindtextdomain (PACKAGE, LOCALEDIR);
  37   textdomain (PACKAGE);
  38
  39   /* Recognize --help or --version only if it's the only command-line
  40      argument and if POSIXLY_CORRECT is not set.  */
  41   if (argc == 2 && getenv ("POSIXLY_CORRECT") == NULL)
  42     {
  43       if (STREQ (argv[1], "--help"))
  44         usage (EXIT_SUCCESS);
  45
  46       if (STREQ (argv[1], "--version"))
  47         version_etc (stdout, PROGRAM_NAME, GNU_PACKAGE, VERSION, AUTHORS);
  48     }
  49
  50   exit (EXIT_SUCCESS);
  51 }