ping包检测

#!/usr/bin/env python
#-*- coding: utf-8 -*-
import re
import subprocess


def check_alive(ip,count=1,timeout=1):
    '''
    ping网络测试,通过调用ping命令,发送一个icmp包，从结果中通过正则匹配是否有100%关键字，有则表示丢包，无则表示正常
    '''
    cmd = 'ping -c %d -w %d %s' %     (count,timeout,ip)
    p = subprocess.Popen(cmd,
    stdin=subprocess.PIPE,
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE,
    shell=True
    )
    result = p.stdout.read()
    regex = re.findall('100% packet loss',result)

    if len(regex) == 0:
        print "\033[31m%s UP\033[0m" % (ip)
    else:
        print "\033[32m%s DOWN\033[0m" % (ip)

if __name__ == "__main__":
    with file('/root/ip.txt','r') as f:
        for line in f.readlines():
            ip = line.strip()
            check_alive(ip)