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python自动修改本机网关的代码

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#!/usr/bin/python
#auto change gateway Created By mickelfeng
import os
import random,re
g='gateway 192.168.1.'
rand=random.randint(1,3)
test='www.baidu.com'
command='/etc/init.d/networking restart'
GW = "%s%d"%(g,rand)
PingTest = 'ping -c 3 ' + test
try:
    result=os.system(PingTest)
    print result
    if result!=0:
        data = open('/etc/network/interfaces').read()
        data = re.sub('gateway 192.168.1.*',GW, data)
        open('/etc/network/interfaces', 'wb').write(data)
        os.system(command)
        os.system(command)
except:
    pass

标签:修改网关,linux,python

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