// RunChild.java -- example for running a child process

import java.io.*;

class RunChild {

  public static void main(String[] args) throws Exception {

    if (args.length > 0) {
      System.out.println("creating child");
      Process p = Runtime.getRuntime().exec(args);
      BufferedReader r = new BufferedReader(
        new InputStreamReader(p.getInputStream())
      );
      String x;
      while ((x = r.readLine()) != null) {
        System.out.println(x);
      }
      r.close();
      p.waitFor();
      System.out.println("child finished");
    }

  }

}

// usage example: java RunChild /bin/uname -a