Python脚本实现网卡流量监控

#/usr/bin/env/python
#coding=utf-8

import sys,re,time,os
maxdata = 50000 #单位KB
memfilename = '/tmp/newnetcardtransdata.txt'
netcard = '/proc/net/dev'

def checkfile(filename):
  if os.path.isfile(filename):
    pass
  else:
    f = open(filename, 'w')
    f.write('0')
    f.close()

def get_net_data():
  nc = netcard or '/proc/net/dev'
  fd = open(nc, "r")
  netcardstatus = False
  for line in fd.readlines():
    if line.find("eth0") > 0:
      netcardstatus = True
      field = line.split()
      recv = field[0].split(":")[1]
      recv = recv or field[1]
      send = field[8]
  if not netcardstatus:
    fd.close()
    print 'Please setup your netcard'
    sys.exit()
  fd.close()
  return (float(recv), float(send))

def monfirst(filename):
  nowtime = time.strftime('%m-%d %H:%M',time.localtime(time.time()))
  sec = time.localtime().tm_sec
  if nowtime == '01-01 00:00':
    if sec = maxdata:
      os.system('init 0')

if __name__ == "__main__":
  net_loop()

用ROOT权限运行，maxdata为最大流量限制 超过这个限制，系统自动关机 当然，你可以改os.system('init 0')为你想要的命令 主要是现在VPS都限制流量，才搞了这个小脚本