錯誤的方法：

//CPUID
private static final String cpuid="dmidecode -t processor | grep 'ID' | head -1";

Process p = Runtime.getRuntime().exec(cpuid);

原因：不會被再次解析，管道符失效

正確的辦法：

linux下：

String[] command = { "/bin/sh", "-c", cpuid };

Process ps = Runtime.getRuntime().exec(command );

windows下：

String[] command = { "cmd", "/c", cpuid

Process ps = Runtime.getRuntime().exec(command );