/**
 * RunACommand tests the exec() method of Runtime and the Process class
 *
 * @author: Leif E. Andersen, BLA*net
 * 
 */
import java.io.*;
public class RunACommand {
	public static void main (String arg[]) throws Exception {
		// obtain the runtime environment of myself
		Runtime me = Runtime.getRuntime() ;
		System.out.println ("My environment is "+me);
		// execute a command
		Process cmd = me.exec("ls");
		System.out.println ("The command is exec'ed in " + cmd);

		BufferedReader inp = new BufferedReader(
			new InputStreamReader(cmd.getInputStream()));
		// print out current output of cmd
		// Is InputStream for me-process
		System.out.println("and output of the command is as follows:");
		String line;
		while ((line = inp.readLine())!= null) {
			System.out.println("-> "+ line);
		}
	}

}