Here you can find the source of executeCommand(List
public static String executeCommand(List<String> cmdArray) throws IOException, InterruptedException
//package com.java2s; /*//ww w .ja v a2 s. co m * This file is part of Fim - File Integrity Manager * * Copyright (C) 2015 Etienne Vrignaud * * Fim is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Fim is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Fim. If not, see <http://www.gnu.org/licenses/>. */ import java.io.IOException; import java.io.InputStream; import java.util.List; import java.util.Scanner; public class Main { /** * Execute a command and return all the output. */ public static String executeCommand(List<String> cmdArray) throws IOException, InterruptedException { ProcessBuilder builder = new ProcessBuilder(cmdArray); builder.redirectErrorStream(true); Process process = builder.start(); try (InputStream is = process.getInputStream(); Scanner scanner = new Scanner(is).useDelimiter("$")) { String output = scanner.hasNext() ? scanner.next() : ""; process.waitFor(); int exitValue = process.exitValue(); if (exitValue != 0) { throw new IllegalArgumentException( String.format("Command execution failed with status: %d\n%s", exitValue, output)); } return output; } } }