Linux下使用python自动修改本机网关代码分享

    #!/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