start-processes.java

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.LinkedList;
import java.util.List;

/**
 * Created by fhrenic on 12/11/2016.
 */
public class Runner {

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

		List<Process> processes = new LinkedList<>();

		URL url = Runner.class.getClassLoader().getResource("");
		if (url == null) { // won't happen
			throw new IllegalStateException("Can't get working directory");
		}
		File root = new File(url.getPath());

		// Create commands here
		String[] cmd = new String[]{"sh", "-c", "'echo hello'"};
		for (String nodename : Config.getNodeNames()) {
			processes.add(
				new ProcessBuilder(cmd)
					.directory(root)
					.redirectOutput(ProcessBuilder.Redirect.INHERIT)
					.redirectError(ProcessBuilder.Redirect.INHERIT)
					.start()
			);
		}
		
		loop();

		processes.forEach(Process::destroy);
	}
	
	private static void loop(){
		System.out.println("> procceses started");
		System.out.println("> type exit to stop");

		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

		while (true) {
			System.out.print("> ");
			if ("exit".equalsIgnoreCase(in.readLine())) { break; }
		}	
	}
}