Java tutorial
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can obtain * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt. * Sun designates this particular file as subject to the "Classpath" exception * as provided by Sun in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the License * Header, with the fields enclosed by brackets [] replaced by your own * identifying information: "Portions Copyrighted [year] * [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ /* * OS.java * * Created on December 8, 2001, 5:48 PM */ import java.io.File; /** * * @author bnevins * @version */ public class OS { private OS() { } /////////////////////////////////////////////////////////////////////////// public static boolean isWindows() { return File.separatorChar == '\\'; } /////////////////////////////////////////////////////////////////////////// public static boolean isUNIX() { return File.separatorChar == '/'; } /////////////////////////////////////////////////////////////////////////// public static boolean isUnix() { // convenience method... return isUNIX(); } /////////////////////////////////////////////////////////////////////////// public static boolean isSun() { return isName("sun"); } /////////////////////////////////////////////////////////////////////////// public static boolean isSolaris10() { return isSun() && isVersion("5.10"); } /////////////////////////////////////////////////////////////////////////// public static boolean isSunSparc() { return isName("sun") && isArch("sparc"); } /////////////////////////////////////////////////////////////////////////// public static boolean isSunX86() { return isName("sun") && isArch("x86"); } /////////////////////////////////////////////////////////////////////////// public static boolean isLinux() { return isName("linux"); } /////////////////////////////////////////////////////////////////////////// public static boolean isDarwin() { return isName("Mac OS X"); } /////////////////////////////////////////////////////////////////////////// public static boolean isWindowsForSure() { return isName("windows") && isWindows(); } /////////////////////////////////////////////////////////////////////////// // There are 10 known Linux versions! /////////////////////////////////////////////////////////////////////////// public static boolean isDebianLinux() { return isLinux() && new File("/etc/debian_version").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isFedoraLinux() { return isLinux() && new File("/etc/fedora-release").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isGentooLinux() { return isLinux() && new File("/etc/gentoo-release").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isKnoppixLinux() { return isLinux() && new File("/etc/knoppix_version").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isMandrakeLinux() { return isLinux() && new File("/etc/mandrake-release").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isMandrivaLinux() { return isLinux() && new File("/etc/mandriva-release").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isRedHatLinux() { return isLinux() && new File("/etc/redhat-release").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isSlackwareLinux() { return isLinux() && new File("/etc/slackware-version").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isSuSELinux() { return isLinux() && new File("/etc/SuSE-release").exists(); } /////////////////////////////////////////////////////////////////////////// public static boolean isUbuntuLinux() { return isLinux() && new File("/etc/lsb-release").exists(); } /////////////////////////////////////////////////////////////////////////// private static boolean isArch(String name) { String archname = System.getProperty("os.arch"); if (archname == null || archname.length() <= 0) return false; // case insensitive compare... archname = archname.toLowerCase(); name = name.toLowerCase(); if (archname.indexOf(name) >= 0) return true; return false; } /////////////////////////////////////////////////////////////////////////// private static boolean isName(String name) { String osname = System.getProperty("os.name"); if (osname == null || osname.length() <= 0) return false; // case insensitive compare... osname = osname.toLowerCase(); name = name.toLowerCase(); if (osname.indexOf(name) >= 0) return true; return false; } /////////////////////////////////////////////////////////////////////////// private static boolean isVersion(String version) { String osversion = System.getProperty("os.version"); if (osversion == null || osversion.length() <= 0 || version == null || version.length() <= 0) return false; if (osversion.equals(version)) return true; return false; } /////////////////////////////////////////////////////////////////////////// public static final String WINDOWS_BATCH_FILE_EXTENSION = ".bat"; /** * @param args the command line arguments */ public static void main(String args[]) { System.out.println("os.version = " + System.getProperty("os.version")); System.out.println("os.name = " + System.getProperty("os.name")); System.out.println("os.arch = " + System.getProperty("os.arch")); System.out.println("isUNIX() returned: " + isUNIX()); System.out.println("isWindows() returned: " + isWindows()); System.out.println("isWindowsForSure() returned: " + isWindowsForSure()); System.out.println("isSun() returned: " + isSun()); System.out.println("isLinux() returned: " + isLinux()); System.out.println("isDebianLinux() returned: " + isDebianLinux()); System.out.println("isFedoraLinux() returned: " + isFedoraLinux()); System.out.println("isGentooLinux() returned: " + isGentooLinux()); System.out.println("isKnoppixLinux() returned: " + isKnoppixLinux()); System.out.println("isMandrakeLinux() returned: " + isMandrakeLinux()); System.out.println("isMandrivaLinux() returned: " + isMandrivaLinux()); System.out.println("isRedHatLinux() returned: " + isRedHatLinux()); System.out.println("isSlackwareLinux() returned: " + isSlackwareLinux()); System.out.println("isSuSELinux() returned: " + isSuSELinux()); System.out.println("isUbuntuLinux() returned: " + isUbuntuLinux()); System.out.println("isSunX86() returned: " + isSunX86()); System.out.println("isSunSparc() returned: " + isSunSparc()); System.out.println("isDarwin() returned: " + isDarwin()); System.out.println("isSolaris10() returned: " + isSolaris10()); } }