* Fixed the "vnodes" KDL command when called without any arguments.

* Fixed the usage text of the "help" KDL command.
* Made the "ambiguous command" warning shorter, so that it will still fit in
  the exception buffer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23565 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/debug/debug.cpp

@@ -589,8 +589,8 @@ cmd_shutdown(int argc, char **argv)
 static int
 cmd_help(int argc, char **argv)
 {
-	static const char* usage = "usage: %s\n"
-		"Lists all debugger commands.\n";
+	static const char* usage = "usage: %s [name]\n"
+		"Lists all debugger commands or those starting with \"name\".\n";
 	if (argc > 1 && strcmp(argv[1], "--help") == 0) {
 		kprintf(usage, argv[0]);
 		return 0;