Change `exit (0)' to `exit (EXIT_SUCCESS)',

`exit (1)' to `exit (EXIT_FAILURE)', and
`usage (1)' to `usage (EXIT_FAILURE)'.

69 files changed, 201 insertions, 201 deletions

diff --git a/src/basename.c b/src/basename.c
index 139b9e90c..aa0e14161 100644
--- a/src/basename.c
+++ b/src/basename.c
@@ -1,5 +1,5 @@
 /* basename -- strip directory and suffix from filenames
-   Copyright (C) 1990-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1990-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -113,7 +113,7 @@ main (int argc, char **argv)
     {
       error (0, 0, (argc == 1 ? _("too few arguments")
 		    : _("too many arguments")));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   name = base_name (argv[1]);
@@ -124,5 +124,5 @@ main (int argc, char **argv)
 
   puts (name);
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/chgrp.c b/src/chgrp.c
index 491433090..5727b2720 100644
--- a/src/chgrp.c
+++ b/src/chgrp.c
@@ -1,5 +1,5 @@
 /* chgrp -- change group ownership of files
-   Copyright (C) 89, 90, 91, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 89, 90, 91, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -201,14 +201,14 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (argc - optind + (reference_file ? 1 : 0) <= 1)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (reference_file)
diff --git a/src/chmod.c b/src/chmod.c
index 8abbd618b..cc0e0f2e4 100644
--- a/src/chmod.c
+++ b/src/chmod.c
@@ -341,7 +341,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -351,7 +351,7 @@ main (int argc, char **argv)
   if (optind >= argc)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   changes = (reference_file ? mode_create_from_ref (reference_file)
diff --git a/src/chown.c b/src/chown.c
index 5320f7ade..0a5609620 100644
--- a/src/chown.c
+++ b/src/chown.c
@@ -1,5 +1,5 @@
 /* chown -- change user and group ownership of files
-   Copyright (C) 89, 90, 91, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 89, 90, 91, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -202,14 +202,14 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (argc - optind + (reference_file ? 1 : 0) <= 1)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (reference_file)
diff --git a/src/chroot.c b/src/chroot.c
index f63ab2a53..cbec705c2 100644
--- a/src/chroot.c
+++ b/src/chroot.c
@@ -76,7 +76,7 @@ main (int argc, char **argv)
   if (argc == 1)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (chroot (argv[1]))
diff --git a/src/cksum.c b/src/cksum.c
index 7d0fdc75d..c7de79edf 100644
--- a/src/cksum.c
+++ b/src/cksum.c
@@ -319,7 +319,7 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/comm.c b/src/comm.c
index 7da3de20b..00b14357c 100644
--- a/src/comm.c
+++ b/src/comm.c
@@ -257,11 +257,11 @@ main (int argc, char **argv)
       case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
       default:
-	usage (1);
+	usage (EXIT_FAILURE);
       }
 
   if (optind + 2 != argc)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   exit (compare_files (argv + optind) == 0
 	? EXIT_SUCCESS : EXIT_FAILURE);
diff --git a/src/cp.c b/src/cp.c
index 36a66e059..76e124aab 100644
--- a/src/cp.c
+++ b/src/cp.c
@@ -491,12 +491,12 @@ do_copy (int n_files, char **file, const char *target_directory,
   if (n_files <= 0)
     {
       error (0, 0, _("missing file arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
   if (n_files == 1 && !target_directory)
     {
       error (0, 0, _("missing destination file"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (target_directory)
@@ -545,7 +545,7 @@ do_copy (int n_files, char **file, const char *target_directory,
 	{
 	  error (0, 0, _("%s: specified target is not a directory"),
 		 quote (dest));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
 
       if (n_files > 1)
@@ -553,7 +553,7 @@ do_copy (int n_files, char **file, const char *target_directory,
 	  error (0, 0,
 	 _("copying multiple files, but last argument %s is not a directory"),
 	     quote (dest));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -650,7 +650,7 @@ do_copy (int n_files, char **file, const char *target_directory,
 	{
 	  error (0, 0,
 	       _("when preserving paths, the destination must be a directory"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
 
       source = file[0];
@@ -999,14 +999,14 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (x.hard_link && x.symbolic_link)
     {
       error (0, 0, _("cannot make both hard and symbolic links"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (backup_suffix_string)
diff --git a/src/csplit.c b/src/csplit.c
index ebc930686..f8c179368 100644
--- a/src/csplit.c
+++ b/src/csplit.c
@@ -1454,13 +1454,13 @@ main (int argc, char **argv)
       case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
       default:
-	usage (1);
+	usage (EXIT_FAILURE);
       }
 
   if (argc - optind < 2)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (suffix)
diff --git a/src/date.c b/src/date.c
index bc0c81a5a..bf1332b7a 100644
--- a/src/date.c
+++ b/src/date.c
@@ -351,7 +351,7 @@ main (int argc, char **argv)
       case_GETOPT_HELP_CHAR;
       case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
       default:
-	usage (1);
+	usage (EXIT_FAILURE);
       }
 
   n_args = argc - optind;
@@ -364,21 +364,21 @@ main (int argc, char **argv)
     {
       error (0, 0,
 	_("the options to specify dates for printing are mutually exclusive"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (set_date && option_specified_date)
     {
       error (0, 0,
 	  _("the options to print and set the time may not be used together"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (n_args > 1)
     {
       error (0, 0, _("too many non-option arguments: %s%s"),
 	     argv[optind + 1], n_args == 2 ? "" : " ...");
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if ((set_date || option_specified_date)
@@ -389,7 +389,7 @@ the argument `%s' lacks a leading `+';\n\
 When using an option to specify date(s), any non-option\n\
 argument must be a format string beginning with `+'."),
 	     argv[optind]);
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   /* Simply ignore --rfc-822 if specified when setting the date.  */
@@ -398,7 +398,7 @@ argument must be a format string beginning with `+'."),
       error (0, 0,
 	     _("a format string may not be specified when using\
  the --rfc-822 (-R) option"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (set_date)
diff --git a/src/dd.c b/src/dd.c
index da3c87d55..d082c3442 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -504,7 +504,7 @@ parse_conversion (char *str)
       if (conversions[i].convname == NULL)
 	{
 	  error (0, 0, _("invalid conversion: %s"), quote (str));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
       str = new;
   } while (new != NULL);
@@ -560,7 +560,7 @@ scanargs (int argc, char **argv)
       if (val == NULL)
 	{
 	  error (0, 0, _("unrecognized option %s"), quote (name));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
       *val++ = '\0';
 
@@ -608,7 +608,7 @@ scanargs (int argc, char **argv)
 	    {
 	      error (0, 0, _("unrecognized option %s=%s"),
 		     quote_n (0, name), quote_n (1, val));
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 
 	  if (invalid)
diff --git a/src/df.c b/src/df.c
index 05364c82d..f72c53873 100644
--- a/src/df.c
+++ b/src/df.c
@@ -488,7 +488,7 @@ done:
   {
     int save_errno = errno;
     if (restore_cwd (&cwd, 0, mp))
-      exit (1);			/* We're scrod.  */
+      exit (EXIT_FAILURE);			/* We're scrod.  */
     free_cwd (&cwd);
     errno = save_errno;
   }
@@ -878,7 +878,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -902,7 +902,7 @@ main (int argc, char **argv)
 	  }
       }
     if (match)
-      exit (1);
+      exit (EXIT_FAILURE);
   }
 
   {
diff --git a/src/dircolors.c b/src/dircolors.c
index f9b6c1488..bf2b2c2a0 100644
--- a/src/dircolors.c
+++ b/src/dircolors.c
@@ -1,5 +1,5 @@
 /* dircolors - output commands to set the LS_COLOR environment variable
-   Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001 H. Peter Anvin
+   Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002 H. Peter Anvin
    Copyright (C) 1996-2000 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
@@ -454,7 +454,7 @@ main (int argc, char **argv)
       case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
       default:
-	usage (1);
+	usage (EXIT_FAILURE);
       }
 
   argc -= optind;
@@ -467,7 +467,7 @@ main (int argc, char **argv)
       error (0, 0,
 	     _("the options to output dircolors' internal database and\n\
 to select a shell syntax are mutually exclusive"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (print_database && argc > 0)
@@ -475,13 +475,13 @@ to select a shell syntax are mutually exclusive"));
       error (0, 0,
 	     _("no FILE arguments may be used with the option to output\n\
 dircolors' internal database"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (!print_database && argc > 1)
     {
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (print_database)
diff --git a/src/dirname.c b/src/dirname.c
index 6dfb0b340..e88e6a21c 100644
--- a/src/dirname.c
+++ b/src/dirname.c
@@ -88,7 +88,7 @@ main (int argc, char **argv)
     {
       error (0, 0, argc < 2 ? _("too few arguments")
 	     : _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   result = argv[1];
@@ -103,5 +103,5 @@ main (int argc, char **argv)
   fwrite (result, 1, len, stdout);
   putchar ('\n');
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/du.c b/src/du.c
index 7e29a96d3..68121baee 100644
--- a/src/du.c
+++ b/src/du.c
@@ -380,7 +380,7 @@ pop_dir (struct saved_cwd *cwd, const char *curr_dir_name)
   if (cwd)
     {
       if (restore_cwd (cwd, "..", curr_dir_name))
-	exit (1);
+	exit (EXIT_FAILURE);
       free_cwd (cwd);
     }
   else if (chdir ("..") < 0)
@@ -456,7 +456,7 @@ count_entry (const char *ent, int top, dev_t last_dev, int depth)
 	      && S_ISLNK (e_buf.st_mode)))
 	{
 	  if (save_cwd (&cwd_buf))
-	    exit (1);
+	    exit (EXIT_FAILURE);
 	  cwd = &cwd_buf;
 	}
       else
@@ -671,14 +671,14 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (opt_all && opt_summarize_only)
     {
       error (0, 0, _("cannot both summarize and show all entries"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (opt_summarize_only && max_depth_specified && max_depth == 0)
@@ -692,7 +692,7 @@ main (int argc, char **argv)
       error (0, 0,
 	     _("warning: summarizing conflicts with --max-depth=%d"),
 	       max_depth);
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (opt_summarize_only)
diff --git a/src/echo.c b/src/echo.c
index 929f10106..3538ed503 100644
--- a/src/echo.c
+++ b/src/echo.c
@@ -1,5 +1,5 @@
 /* echo.c, derived from code echo.c in Bash.
-   Copyright (C) 87,89, 1991-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 87,89, 1991-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -244,5 +244,5 @@ just_echo:
     }
   if (display_return)
     putchar ('\n');
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/env.c b/src/env.c
index 59bd03839..163c4fbee 100644
--- a/src/env.c
+++ b/src/env.c
@@ -1,5 +1,5 @@
 /* env - run a program in a modified environment
-   Copyright (C) 1986, 1991-2001 Free Software Foundation, Inc.
+   Copyright (C) 1986, 1991-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -194,7 +194,7 @@ main (register int argc, register char **argv, char **envp)
     {
       while (*environ)
 	puts (*environ++);
-      exit (0);
+      exit (EXIT_SUCCESS);
     }
 
   execvp (argv[optind], &argv[optind]);
diff --git a/src/expand.c b/src/expand.c
index 1ce8ac72c..84d14d924 100644
--- a/src/expand.c
+++ b/src/expand.c
@@ -358,7 +358,7 @@ main (int argc, char **argv)
 	  break;
 
 	case '?':
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	case 'i':
 	  convert_entire_line = 0;
 	  break;
diff --git a/src/expr.c b/src/expr.c
index 18000705d..6b705d467 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -175,7 +175,7 @@ main (int argc, char **argv)
   if (argc == 1)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   args = argv + 1;
diff --git a/src/factor.c b/src/factor.c
index 491f406f2..c78cebbde 100644
--- a/src/factor.c
+++ b/src/factor.c
@@ -1,5 +1,5 @@
 /* factor -- print prime factors of n.
-   Copyright (C) 86, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 86, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -217,7 +217,7 @@ main (int argc, char **argv)
 	fail |= print_factors (argv[i]);
     }
   if (fail)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   exit (fail);
 }
diff --git a/src/fmt.c b/src/fmt.c
index f86513f33..fbc2c578d 100644
--- a/src/fmt.c
+++ b/src/fmt.c
@@ -1,5 +1,5 @@
 /* GNU fmt -- simple text formatter.
-   Copyright (C) 1994-2001 Free Software Foundation, Inc.
+   Copyright (C) 1994-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -356,7 +356,7 @@ main (register int argc, register char **argv)
     switch (optchar)
       {
       default:
-	usage (1);
+	usage (EXIT_FAILURE);
 
       case 0:
 	break;
diff --git a/src/fold.c b/src/fold.c
index be1d669da..cf8867369 100644
--- a/src/fold.c
+++ b/src/fold.c
@@ -302,7 +302,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/head.c b/src/head.c
index f0879a1d1..540d601c4 100644
--- a/src/head.c
+++ b/src/head.c
@@ -338,7 +338,7 @@ main (int argc, char **argv)
 
 	    default:
 	      error (0, 0, _("unrecognized option `-%c'"), *a);
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 	}
 
@@ -399,7 +399,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/hostid.c b/src/hostid.c
index 21bbde7c6..d27207baf 100644
--- a/src/hostid.c
+++ b/src/hostid.c
@@ -1,5 +1,5 @@
 /* print the hexadecimal identifier for the current host
-   Copyright (C) 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -77,7 +77,7 @@ main (int argc, char **argv)
   if (argc > 1)
     {
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   id = gethostid ();
diff --git a/src/hostname.c b/src/hostname.c
index c004523ca..3f13b072e 100644
--- a/src/hostname.c
+++ b/src/hostname.c
@@ -1,5 +1,5 @@
 /* hostname - set or print the name of current host system
-   Copyright (C) 1994-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1994-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -102,7 +102,7 @@ main (int argc, char **argv)
       err = sethostname (argv[1], strlen (argv[1]));
       if (err != 0)
 	error (EXIT_FAILURE, errno, _("cannot set hostname to `%s'"), argv[1]);
-      exit (0);
+      exit (EXIT_SUCCESS);
     }
 #else
   if (argc == 2)
@@ -120,8 +120,8 @@ main (int argc, char **argv)
   else
     {
       error (2, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/id.c b/src/id.c
index 9f2bd460a..4044b0383 100644
--- a/src/id.c
+++ b/src/id.c
@@ -154,7 +154,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -166,7 +166,7 @@ main (int argc, char **argv)
 	   _("cannot print only names or real IDs in default format"));
 
   if (argc - optind > 1)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   if (argc - optind == 1)
     {
diff --git a/src/install.c b/src/install.c
index 1afcdcaca..3be52b095 100644
--- a/src/install.c
+++ b/src/install.c
@@ -263,7 +263,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -286,7 +286,7 @@ main (int argc, char **argv)
   if (n_files == 0 || (n_files == 1 && !dir_arg))
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (specified_mode)
@@ -336,7 +336,7 @@ main (int argc, char **argv)
 		     _("installing multiple files, but last argument, %s \
 is not a directory"),
 		     quote (dest));
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 
 	  dest_info_init (&x);
diff --git a/src/join.c b/src/join.c
index b6f2c6922..368ea22b8 100644
--- a/src/join.c
+++ b/src/join.c
@@ -830,7 +830,7 @@ main (int argc, char **argv)
 	  if (nfiles > 1)
 	    {
 	      error (0, 0, _("too many non-option arguments"));
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 	  names[nfiles++] = optarg;
 	  break;
@@ -840,7 +840,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
       prev_optc = optc;
     }
@@ -852,7 +852,7 @@ main (int argc, char **argv)
   if (nfiles != 2)
     {
       error (0, 0, _("too few non-option arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   fp1 = STREQ (names[0], "-") ? stdin : fopen (names[0], "r");
diff --git a/src/link.c b/src/link.c
index d5c655ba3..760ad945b 100644
--- a/src/link.c
+++ b/src/link.c
@@ -1,5 +1,5 @@
 /* link utility for GNU.
-   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -85,18 +85,18 @@ main (int argc, char **argv)
   if (argc < 3)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (3 < argc)
     {
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (link (argv[1], argv[2]) != 0)
     error (EXIT_FAILURE, errno, _("cannot create link %s to %s"),
 	   quote_n (0, argv[2]), quote_n (1, argv[1]));
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/ln.c b/src/ln.c
index 06589f58c..a674ad25a 100644
--- a/src/ln.c
+++ b/src/ln.c
@@ -477,7 +477,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	  break;
 	}
     }
@@ -488,7 +488,7 @@ main (int argc, char **argv)
   if (n_files == 0)
     {
       error (0, 0, _("missing file argument"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   target_directory_specified = (target_directory != NULL);
@@ -520,7 +520,7 @@ main (int argc, char **argv)
     {
       error (0, 0, _("%s: specified target directory is not a directory"),
 	     quote (target_directory));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (backup_suffix_string)
diff --git a/src/logname.c b/src/logname.c
index b3fe3eb17..d86fab0e8 100644
--- a/src/logname.c
+++ b/src/logname.c
@@ -1,5 +1,5 @@
 /* logname -- print user's login name
-   Copyright (C) 1990-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1990-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -81,21 +81,21 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (argc - optind != 0)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   /* POSIX requires using getlogin (or equivalent code).  */
   cp = getlogin ();
   if (cp)
     {
       puts (cp);
-      exit (0);
+      exit (EXIT_SUCCESS);
     }
   /* POSIX prohibits using a fallback technique.  */
   fprintf (stderr, _("%s: no login name\n"), argv[0]);
-  exit (1);
+  exit (EXIT_FAILURE);
 }
diff --git a/src/mkdir.c b/src/mkdir.c
index 877fd9812..5df9c1849 100644
--- a/src/mkdir.c
+++ b/src/mkdir.c
@@ -1,5 +1,5 @@
 /* mkdir -- make directories
-   Copyright (C) 90, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 90, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -115,14 +115,14 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind == argc)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   newmode = S_IRWXUGO;
diff --git a/src/mkfifo.c b/src/mkfifo.c
index ae2ee326f..2fa279e8e 100644
--- a/src/mkfifo.c
+++ b/src/mkfifo.c
@@ -1,5 +1,5 @@
 /* mkfifo -- make fifo's (named pipes)
-   Copyright (C) 90, 91, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 90, 91, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -104,14 +104,14 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind == argc)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   newmode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
diff --git a/src/mknod.c b/src/mknod.c
index 66ccba06a..21498568f 100644
--- a/src/mknod.c
+++ b/src/mknod.c
@@ -118,7 +118,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -144,7 +144,7 @@ main (int argc, char **argv)
       else
 	msg = _("wrong number of arguments");
       error (0, 0, "%s", msg);
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   /* Only check the first character, to allow mnemonic usage like
@@ -175,7 +175,7 @@ main (int argc, char **argv)
 	  error (0, 0, _("\
 when creating special files, major and minor device\n\
 numbers must be specified"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
 
       {
@@ -213,7 +213,7 @@ numbers must be specified"));
 	{
 	  error (0, 0, _("\
 major and minor device numbers may not be specified for fifo files"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
       if (mkfifo (argv[optind], newmode))
 	error (EXIT_FAILURE, errno, "%s", quote (argv[optind]));
@@ -222,7 +222,7 @@ major and minor device numbers may not be specified for fifo files"));
 
     default:
       error (0, 0, "invalid device type %s", quote (argv[optind + 1]));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   /* Perform an explicit chmod to ensure the file mode permission bits
@@ -236,5 +236,5 @@ major and minor device numbers may not be specified for fifo files"));
                quote (argv[optind]));
     }
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/mv.c b/src/mv.c
index cdf3d9a33..77fb9ff9e 100644
--- a/src/mv.c
+++ b/src/mv.c
@@ -444,7 +444,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -460,7 +460,7 @@ main (int argc, char **argv)
   if (n_files == 0 || (n_files == 1 && !target_directory_specified))
     {
       error (0, 0, _("missing file argument"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (target_directory_specified)
@@ -469,14 +469,14 @@ main (int argc, char **argv)
 	{
 	  error (0, 0, _("specified target, %s is not a directory"),
 		 quote (target_directory));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
   else if (n_files > 2 && !dest_is_dir)
     {
       error (0, 0,
 	    _("when moving multiple files, last argument must be a directory"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (backup_suffix_string)
diff --git a/src/nice.c b/src/nice.c
index 13122d92f..f8b5b85f2 100644
--- a/src/nice.c
+++ b/src/nice.c
@@ -139,7 +139,7 @@ main (int argc, char **argv)
 	      switch (optc)
 		{
 		case '?':
-		  usage (1);
+		  usage (EXIT_FAILURE);
 
 		case 'n':
 		  if (xstrtol (optarg, NULL, 10, &adjustment, "")
@@ -169,7 +169,7 @@ main (int argc, char **argv)
       if (adjustment_given)
 	{
 	  error (0, 0, _("a command must be given with an adjustment"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
       /* No command given; print the priority. */
       errno = 0;
@@ -177,7 +177,7 @@ main (int argc, char **argv)
       if (current_priority == -1 && errno != 0)
 	error (EXIT_FAILURE, errno, _("cannot get priority"));
       printf ("%d\n", current_priority);
-      exit (0);
+      exit (EXIT_SUCCESS);
     }
 
 #ifndef NICE_PRIORITY
diff --git a/src/nl.c b/src/nl.c
index 5204380fc..065aa4e52 100644
--- a/src/nl.c
+++ b/src/nl.c
@@ -1,5 +1,5 @@
 /* nl -- number lines of files
-   Copyright (C) 89, 92, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 89, 92, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/src/od.c b/src/od.c
index 6c0de1874..a3836bb0f 100644
--- a/src/od.c
+++ b/src/od.c
@@ -1812,7 +1812,7 @@ it must be one character from [doxn]"),
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	  break;
 	}
     }
@@ -1872,7 +1872,7 @@ it must be one character from [doxn]"),
 	      error (0, 0,
 		     _("invalid second operand in compatibility mode `%s'"),
 		     argv[optind + 1]);
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 	}
       else if (n_files == 3)
@@ -1892,14 +1892,14 @@ it must be one character from [doxn]"),
 	    {
 	      error (0, 0,
 	    _("in compatibility mode, the last two arguments must be offsets"));
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 	}
       else if (n_files > 3)
 	{
 	  error (0, 0,
 		 _("compatibility mode supports at most three arguments"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
 
       if (flag_pseudo_start)
diff --git a/src/paste.c b/src/paste.c
index 3814c5a08..839fef15f 100644
--- a/src/paste.c
+++ b/src/paste.c
@@ -1,5 +1,5 @@
 /* paste - merge lines of files
-   Copyright (C) 1984, 1997, 1998, 1999, 2000, 2001 by David M. Ihnat
+   Copyright (C) 1984, 1997-2002 by David M. Ihnat
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -467,7 +467,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/pathchk.c b/src/pathchk.c
index fa81b1b68..3fcc12924 100644
--- a/src/pathchk.c
+++ b/src/pathchk.c
@@ -179,14 +179,14 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind == argc)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   for (; optind < argc; ++optind)
diff --git a/src/pinky.c b/src/pinky.c
index d25317ece..59400d785 100644
--- a/src/pinky.c
+++ b/src/pinky.c
@@ -1,5 +1,5 @@
 /* GNU's pinky.
-   Copyright (C) 1992-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1992-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -563,7 +563,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -573,7 +573,7 @@ main (int argc, char **argv)
     {
       error (0, 0, _("no username specified; at least one must be\
  specified when using -l"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (do_short_format)
@@ -581,5 +581,5 @@ main (int argc, char **argv)
   else
     long_pinky (n_users, argv + optind);
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/printenv.c b/src/printenv.c
index 68608e113..89472ff8d 100644
--- a/src/printenv.c
+++ b/src/printenv.c
@@ -1,5 +1,5 @@
 /* printenv -- print all or part of environment
-   Copyright (C) 1989-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1989-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -103,7 +103,7 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/printf.c b/src/printf.c
index 38e02c914..b7eceffa4 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -1,5 +1,5 @@
 /* printf - format and print data
-   Copyright (C) 1990-2001, Free Software Foundation, Inc.
+   Copyright (C) 1990-2002, Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -206,7 +206,7 @@ print_esc_char (int c)
       putchar (8);
       break;
     case 'c':			/* Cancel the rest of the output. */
-      exit (0);
+      exit (EXIT_SUCCESS);
       break;
     case 'f':			/* Form feed. */
       putchar (12);
@@ -548,7 +548,7 @@ main (int argc, char **argv)
   if (argc == 1)
     {
       fprintf (stderr, _("Usage: %s format [argument...]\n"), program_name);
-      exit (1);
+      exit (EXIT_FAILURE);
     }
 
   format = argv[1];
diff --git a/src/pwd.c b/src/pwd.c
index 6a4ce2ae0..9e53b6143 100644
--- a/src/pwd.c
+++ b/src/pwd.c
@@ -1,5 +1,5 @@
 /* pwd - print current directory
-   Copyright (C) 1994-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1994-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -79,5 +79,5 @@ main (int argc, char **argv)
     error (EXIT_FAILURE, errno, _("cannot get current directory"));
   printf ("%s\n", wd);
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/rm.c b/src/rm.c
index 7c56280da..5df4ed861 100644
--- a/src/rm.c
+++ b/src/rm.c
@@ -187,18 +187,18 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind == argc)
     {
       if (x.ignore_missing_files)
-	exit (0);
+	exit (EXIT_SUCCESS);
       else
 	{
 	  error (0, 0, _("too few arguments"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/rmdir.c b/src/rmdir.c
index bacc911f0..4c401350d 100644
--- a/src/rmdir.c
+++ b/src/rmdir.c
@@ -1,5 +1,5 @@
 /* rmdir -- remove directories
-   Copyright (C) 90, 91, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 90, 91, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -195,14 +195,14 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind == argc)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   for (; optind < argc; ++optind)
diff --git a/src/seq.c b/src/seq.c
index 6acb6115d..58bb59b4a 100644
--- a/src/seq.c
+++ b/src/seq.c
@@ -117,7 +117,7 @@ scan_double_arg (const char *arg)
   if (xstrtod (arg, NULL, &ret_val))
     {
       error (0, 0, _("invalid floating point argument: %s"), arg);
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   return ret_val;
@@ -188,7 +188,7 @@ print_numbers (const char *fmt)
 	  error (0, 0,
 		 _("when the starting value is larger than the limit,\n\
 the increment must be negative"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
 
       printf (fmt, first);
@@ -212,7 +212,7 @@ the increment must be negative"));
 	  error (0, 0,
 		 _("when the starting value is smaller than the limit,\n\
 the increment must be positive"));
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
 
       printf (fmt, first);
@@ -402,26 +402,26 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (argc - optind < 1)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (3 < argc - optind)
     {
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (format_str && !valid_format (format_str))
     {
       error (0, 0, _("invalid format string: `%s'"), format_str);
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   last = scan_double_arg (argv[optind++]);
@@ -444,7 +444,7 @@ main (int argc, char **argv)
     {
       error (0, 0, _("\
 format string may not be specified when printing equal width strings"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (!step_is_set)
diff --git a/src/shred.c b/src/shred.c
index da2b78834..ced548308 100644
--- a/src/shred.c
+++ b/src/shred.c
@@ -1597,7 +1597,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -1607,7 +1607,7 @@ main (int argc, char **argv)
   if (n_files == 0)
     {
       error (0, 0, _("missing file argument"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   for (i = 0; i < n_files; i++)
diff --git a/src/sleep.c b/src/sleep.c
index 62b1f16f8..2c590c9c7 100644
--- a/src/sleep.c
+++ b/src/sleep.c
@@ -212,14 +212,14 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (argc == 1)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
 #ifdef FE_UPWARD
@@ -248,7 +248,7 @@ main (int argc, char **argv)
     }
 
   if (fail)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   /* Separate whole seconds from nanoseconds.
      Be careful to detect any overflow.  */
@@ -298,5 +298,5 @@ main (int argc, char **argv)
 			       clock_get_realtime (&ts_start)))
     continue;
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/stty.c b/src/stty.c
index ed9ec5566..de4e26193 100644
--- a/src/stty.c
+++ b/src/stty.c
@@ -802,7 +802,7 @@ main (int argc, char **argv)
 
   /* FIXME: what is this?!? */
   if (invalid_long_option)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   /* Clear out the options that have been parsed.  This is really
      gross, but it's needed because stty SETTINGS look like options to
@@ -923,7 +923,7 @@ mutually exclusive"));
       max_col = screen_columns ();
       current_col = 0;
       display_settings (output_type, &mode, fd, device_name);
-      exit (0);
+      exit (EXIT_SUCCESS);
     }
 
   speed_was_set = 0;
@@ -958,7 +958,7 @@ mutually exclusive"));
       if (match_found == 0 && reversed)
 	{
 	  error (0, 0, _("invalid argument `%s'"), --argv[k]);
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
       if (match_found == 0)
 	{
@@ -969,7 +969,7 @@ mutually exclusive"));
 		  if (k == argc - 1)
 		    {
 		      error (0, 0, _("missing argument to `%s'"), argv[k]);
-		      usage (1);
+		      usage (EXIT_FAILURE);
 		    }
 		  match_found = 1;
 		  ++k;
@@ -986,7 +986,7 @@ mutually exclusive"));
 	      if (k == argc - 1)
 		{
 		  error (0, 0, _("missing argument to `%s'"), argv[k]);
-		  usage (1);
+		  usage (EXIT_FAILURE);
 		}
 	      ++k;
 	      set_speed (input_speed, argv[k], &mode);
@@ -998,7 +998,7 @@ mutually exclusive"));
 	      if (k == argc - 1)
 		{
 		  error (0, 0, _("missing argument to `%s'"), argv[k]);
-		  usage (1);
+		  usage (EXIT_FAILURE);
 		}
 	      ++k;
 	      set_speed (output_speed, argv[k], &mode);
@@ -1011,7 +1011,7 @@ mutually exclusive"));
 	      if (k == argc - 1)
 		{
 		  error (0, 0, _("missing argument to `%s'"), argv[k]);
-		  usage (1);
+		  usage (EXIT_FAILURE);
 		}
 	      ++k;
 	      set_window_size ((int) integer_arg (argv[k]), -1,
@@ -1023,7 +1023,7 @@ mutually exclusive"));
 	      if (k == argc - 1)
 		{
 		  error (0, 0, _("missing argument to `%s'"), argv[k]);
-		  usage (1);
+		  usage (EXIT_FAILURE);
 		}
 	      ++k;
 	      set_window_size (-1, (int) integer_arg (argv[k]),
@@ -1042,7 +1042,7 @@ mutually exclusive"));
 	      if (k == argc - 1)
 		{
 		  error (0, 0, _("missing argument to `%s'"), argv[k]);
-		  usage (1);
+		  usage (EXIT_FAILURE);
 		}
 	      ++k;
 	      mode.c_line = integer_arg (argv[k]);
@@ -1065,7 +1065,7 @@ mutually exclusive"));
 	      if (recover_mode (argv[k], &mode) == 0)
 		{
 		  error (0, 0, _("invalid argument `%s'"), argv[k]);
-		  usage (1);
+		  usage (EXIT_FAILURE);
 		}
 	      require_set_attr = 1;
 	    }
@@ -1133,7 +1133,7 @@ mutually exclusive"));
 	}
     }
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
 
 /* Return 0 if not applied because not reversible; otherwise return 1.  */
@@ -1912,7 +1912,7 @@ integer_arg (const char *s)
   if (xstrtol (s, NULL, 0, &value, "bB") != LONGINT_OK)
     {
       error (0, 0, _("invalid integer argument `%s'"), s);
-      usage (1);
+      usage (EXIT_FAILURE);
     }
   return value;
 }
diff --git a/src/su.c b/src/su.c
index 5b1328ccf..ae67bf9f3 100644
--- a/src/su.c
+++ b/src/su.c
@@ -1,5 +1,5 @@
 /* su for GNU.  Run a shell with substitute user and group IDs.
-   Copyright (C) 1992-2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1992-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -510,7 +510,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/sum.c b/src/sum.c
index 302ade014..3ce48f439 100644
--- a/src/sum.c
+++ b/src/sum.c
@@ -1,5 +1,5 @@
 /* sum -- checksum and count the blocks in a file
-   Copyright (C) 86, 89, 91, 1995-2001 Free Software Foundation, Inc.
+   Copyright (C) 86, 89, 91, 1995-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -249,7 +249,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/sync.c b/src/sync.c
index 2e1015764..2b8c50ee8 100644
--- a/src/sync.c
+++ b/src/sync.c
@@ -1,5 +1,5 @@
 /* sync - update the super block
-   Copyright (C) 1994-2001 Free Software Foundation, Inc.
+   Copyright (C) 1994-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -70,5 +70,5 @@ main (int argc, char **argv)
     error (0, 0, _("ignoring all arguments"));
 
   sync ();
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/tac.c b/src/tac.c
index 69ec56f8b..ab929c642 100644
--- a/src/tac.c
+++ b/src/tac.c
@@ -641,7 +641,7 @@ main (int argc, char **argv)
 	case_GETOPT_HELP_CHAR;
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/tail.c b/src/tail.c
index c1d6034ce..7c3240e9b 100644
--- a/src/tail.c
+++ b/src/tail.c
@@ -1558,7 +1558,7 @@ parse_options (int argc, char **argv,
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/tee.c b/src/tee.c
index f89f298ee..9a1b3ce3b 100644
--- a/src/tee.c
+++ b/src/tee.c
@@ -110,7 +110,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
diff --git a/src/touch.c b/src/touch.c
index 836277eee..d352bb447 100644
--- a/src/touch.c
+++ b/src/touch.c
@@ -336,7 +336,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -347,7 +347,7 @@ main (int argc, char **argv)
       || (posix_date && flexible_date))
     {
       error (0, 0, _("cannot specify times from more than one source"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (use_ref)
@@ -390,7 +390,7 @@ main (int argc, char **argv)
   if (optind == argc)
     {
       error (0, 0, _("file arguments missing"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   for (; optind < argc; ++optind)
diff --git a/src/tsort.c b/src/tsort.c
index c8a873584..ebd1d43f9 100644
--- a/src/tsort.c
+++ b/src/tsort.c
@@ -1,5 +1,5 @@
 /* tsort - topological sort.
-   Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/src/tty.c b/src/tty.c
index d61961c01..46c20a770 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -1,5 +1,5 @@
 /* tty -- print the path of the terminal connected to standard input
-   Copyright (C) 1990-2001 Free Software Foundation, Inc.
+   Copyright (C) 1990-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/src/uname.c b/src/uname.c
index e35abfb54..ad487e334 100644
--- a/src/uname.c
+++ b/src/uname.c
@@ -206,12 +206,12 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind != argc)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   if (toprint == 0)
     toprint = PRINT_KERNEL_NAME;
@@ -289,5 +289,5 @@ main (int argc, char **argv)
 
   putchar ('\n');
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/unexpand.c b/src/unexpand.c
index 3b830d771..8e58b2b40 100644
--- a/src/unexpand.c
+++ b/src/unexpand.c
@@ -430,7 +430,7 @@ main (int argc, char **argv)
 	  break;
 
 	case '?':
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	case 'a':
 	  convert_entire_line = 1;
 	  break;
diff --git a/src/uniq.c b/src/uniq.c
index 0683c8057..de556d7bd 100644
--- a/src/uniq.c
+++ b/src/uniq.c
@@ -431,7 +431,7 @@ main (int argc, char **argv)
 	  if (nfiles == 2)
 	    {
 	      error (0, 0, _("extra operand `%s'"), argv[optind]);
-	      usage (1);
+	      usage (EXIT_FAILURE);
 	    }
 	  file[nfiles++] = argv[optind++];
 	}
@@ -448,7 +448,7 @@ main (int argc, char **argv)
 	    else if (nfiles == 2)
 	      {
 		error (0, 0, _("extra operand `%s'"), optarg);
-		usage (1);
+		usage (EXIT_FAILURE);
 	      }
 	    else
 	      file[nfiles++] = optarg;
@@ -521,7 +521,7 @@ main (int argc, char **argv)
 	case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -536,7 +536,7 @@ main (int argc, char **argv)
     {
       error (0, 0,
 	   _("printing all duplicated lines and repeat counts is meaningless"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   check_file (file[0], file[1]);
diff --git a/src/unlink.c b/src/unlink.c
index bec995bdd..7c8384951 100644
--- a/src/unlink.c
+++ b/src/unlink.c
@@ -1,5 +1,5 @@
 /* unlink utility for GNU.
-   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -86,17 +86,17 @@ main (int argc, char **argv)
   if (argc < 2)
     {
       error (0, 0, _("too few arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (2 < argc)
     {
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
   if (unlink (argv[1]) != 0)
     error (EXIT_FAILURE, errno, _("cannot unlink %s"), quote (argv[1]));
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/uptime.c b/src/uptime.c
index a2468e319..0aeb2db1d 100644
--- a/src/uptime.c
+++ b/src/uptime.c
@@ -226,7 +226,7 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -242,8 +242,8 @@ main (int argc, char **argv)
 
     default:			/* lose */
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/users.c b/src/users.c
index 83192ae45..341c5c06d 100644
--- a/src/users.c
+++ b/src/users.c
@@ -1,5 +1,5 @@
 /* GNU's users.
-   Copyright (C) 1992-2001 Free Software Foundation, Inc.
+   Copyright (C) 1992-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -151,7 +151,7 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -167,8 +167,8 @@ main (int argc, char **argv)
 
     default:			/* lose */
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/wc.c b/src/wc.c
index 2ecb3be24..c7688bdd7 100644
--- a/src/wc.c
+++ b/src/wc.c
@@ -565,7 +565,7 @@ main (int argc, char **argv)
       case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
       default:
-	usage (1);
+	usage (EXIT_FAILURE);
       }
 
   if (print_lines + print_words + print_chars + print_bytes + print_linelength
diff --git a/src/who.c b/src/who.c
index 4f8deff61..4b16100aa 100644
--- a/src/who.c
+++ b/src/who.c
@@ -730,7 +730,7 @@ main (int argc, char **argv)
 	  case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
@@ -762,8 +762,8 @@ main (int argc, char **argv)
 
     default:			/* lose */
       error (0, 0, _("too many arguments"));
-      usage (1);
+      usage (EXIT_FAILURE);
     }
 
-  exit (0);
+  exit (EXIT_SUCCESS);
 }
diff --git a/src/whoami.c b/src/whoami.c
index d3d03d905..583ed02c2 100644
--- a/src/whoami.c
+++ b/src/whoami.c
@@ -1,5 +1,5 @@
 /* whoami -- print effective userid
-   Copyright (C) 89,90, 1991-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 89,90, 1991-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -87,21 +87,21 @@ main (int argc, char **argv)
 	  break;
 
 	default:
-	  usage (1);
+	  usage (EXIT_FAILURE);
 	}
     }
 
   if (optind != argc)
-    usage (1);
+    usage (EXIT_FAILURE);
 
   uid = geteuid ();
   pw = getpwuid (uid);
   if (pw)
     {
       puts (pw->pw_name);
-      exit (0);
+      exit (EXIT_SUCCESS);
     }
   fprintf (stderr, _("%s: cannot find username for UID %u\n"),
 	   program_name, (unsigned) uid);
-  exit (1);
+  exit (EXIT_FAILURE);
 }
diff --git a/src/yes.c b/src/yes.c
index d743501fc..09d6ee9d1 100644
--- a/src/yes.c
+++ b/src/yes.c
@@ -1,5 +1,5 @@
 /* yes - output a string repeatedly until killed
-   Copyright (C) 1991-1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1991-1997, 1999-2002 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by