Java操作终端的方法

参考下面链接有window 和 mac的

https://blog.csdn.net/xh16319/article/details/17302947

package edu.test;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
      
    /**
     * java在linux环境下执行linux命令，然后返回命令返回值。
     * @author lee
     */
    public class ExecLinuxCMD {
      
        public static Object exec(String cmd) {
            try {
                String[] cmdA = { "/bin/sh", "-c", cmd };
                Process process = Runtime.getRuntime().exec(cmdA);
                LineNumberReader br = new LineNumberReader(new InputStreamReader(
                        process.getInputStream()));
                StringBuffer sb = new StringBuffer();
                String line;
             while ((line = br.readLine()) != null) {
                    System.out.println(line);
                    sb.append(line).append("\n");
                }
                return sb.toString();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
      
        public static void main(String[] args) {
            // TODO Auto-generated method stub
            String pwdString = exec("pwd").toString();
            String netsString = exec("netstat -nat|grep -i \"80\"|wc -l").toString();----------------------- 我这里拿来执行python文件的，这里赋值 是python里面return回来的值 ---print的不会返回回来
              
            System.out.println("==========获得值=============");
            System.out.println(pwdString);
            System.out.println(netsString);
        }
      
    }