import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Main {
public static void main(String[] args) throws Exception{
Process process = Runtime.getRuntime().exec("ls -al");
process.waitFor();
int exitValue = process.exitValue();
System.out.println("exitValue = " + exitValue);
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
}
}