protected function addCommands(CConsoleCommandRunner $runner)
	{
		$runner->addCommands(Yii::getPathOfAlias('system.cli.commands.shell'));
		$runner->addCommands(Yii::getPathOfAlias('application.commands.shell'));
		if(($_path_=@getenv('YIIC_SHELL_COMMAND_PATH'))!==false)
			$runner->addCommands($_path_);
	}