public void exec_root(String cmd){

	String line = cmd;
	CommandLine commandLine = CommandLine.parse(line);
	DefaultExecutor executor = new DefaultExecutor();
	ResultHandler handler = new ResultHandler();
	ExecuteWatchdog watchdog = new ExecuteWatchdog(15000);
	executor.setWatchdog(watchdog);

	try {
		//int exitValue = executor.execute(commandLine);
		executor.execute(commandLine, handler);
	} catch (ExecuteException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	} catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}

    }