python脚本获取服务器外部连接IP并取出非本地服务器程序有关联的IP

#!/bin/env python
#-*- coding:utf-8 -*-
import os
import sys
from subprocess import Popen
def get_foriegn_ip():
        l = os.popen("netstat -ant|grep ESTABLISHED|awk ‘{print $5}‘|awk -F: ‘{print $1}‘|sort -r|uniq -c |awk ‘{print $2}‘|grep -v ‘and‘|grep -v ‘Address‘|grep -v ‘0.0.0.0‘ > foreign_ip.txt")
def list_different():
        list1=[]
        f = open(‘foreign_ip.txt‘,‘r‘)
        for line in f.readlines():
                line1=line.replace("\n","")
                list1.append(line1)
        print(list1)
        list2=[]
        f = open(‘localgroup.txt‘,‘r‘)
        for line in f.readlines():
                line1=line.replace("\n","")
                list2.append(line1)
        print(list2)
        l = [x for x in list1 if x not in list2]
        print(l)
def get_time():
        d = os.popen(‘echo "$(date +%Y%m%d_%H:%M:%S)">>/root/1.txt‘)
if __name__ == ‘__main__‘:
        get_foriegn_ip()
        list_different()
        get_time()

首先将与本服务器程序有关联的IP写入文件localgroup.txt