src/java.security.jgss/windows/classes/sun/security/krb5/internal/tools/Ktab.java

rev 47855 : 8189102: All tools should support -?, -h and --help

@@ -70,12 +70,18 @@
      * The main program that can be invoked at command line.
      * See {@link #printHelp} for usages.
      */
     public static void main(String[] args) {
         Ktab ktab = new Ktab();
-        if ((args.length == 1) && (args[0].equalsIgnoreCase("-help"))) {
+        if ((args.length == 1) &&
+            ((args[0].equalsIgnoreCase("-?")) ||
+             (args[0].equalsIgnoreCase("-h")) ||
+             (args[0].equalsIgnoreCase("--help")) ||
+             // -help: legacy. Undocumented.
+             (args[0].equalsIgnoreCase("-help")))) {
             ktab.printHelp();
+            System.exit(0);
             return;
         } else if ((args == null) || (args.length == 0)) {
             ktab.action = 'l';
         } else {
             ktab.processArgs(args);

@@ -445,9 +451,10 @@
                 + "    defined in RFC 3961, section 8. A prompt to confirm the deletion is\n"
                 + "    displayed unless -f is specified.");
         System.out.println();
         System.out.println("Common option(s):");
         System.out.println();
+        System.out.println("-?, -h, --help print this help message and exit.");
         System.out.println("-k <keytab name>\n"
                 + "    specify keytab name and path with prefix FILE:");
     }
 }