import java.io.*;

public class shell
{
	public static void main(String[] args)
	{
		try
		{
			String params = "ls";
			Process pinger = Runtime.getRuntime().exec(params);
			BufferedReader reader = new BufferedReader(new InputStreamReader(pinger.getInputStream()));
			String lineRead = null;
			while((lineRead = reader.readLine()) != null)
			{
				System.out.println(lineRead);
			}      
		}
		
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
}