java代码如何运行shell命令呢？

实现思路:
     使用Runtime.getRuntime()中的exec()方法即可运行指定的shell命令

Runtime run = Runtime.getRuntime();
Process process = run.exec(new String[]{"/bin/sh","-c", cmd});
InputStream in = process.getInputStream();
BufferedReader bs =new BufferedReader(new InputStreamReader(in)); 
StringBuffer sf =new StringBuffer();
String result =null;

while ((result = bs.readLine()) !=null) {
  sf.append(result);
  sf.append("\n");
}
 process.destroy();