- #/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 < 10:
- f = open(filename, 'w')
- f.write('0')
- f.close()
- def net_loop():
- (recv, send) = get_net_data()
- checkfile(memfilename)
- monfirst(memfilename)
- lasttransdaraopen = open(memfilename,'r')
- lasttransdata = lasttransdaraopen.readline()
- lasttransdaraopen.close()
- totaltrans = int(lasttransdata) or 0
- while True:
- time.sleep(3)
- (new_recv, new_send) = get_net_data()
- recvdata = (new_recv - recv) / 1024
- senddata = (new_send - send) / 1024
- totaltrans += int(recvdata)
- totaltrans += int(senddata)
- memw = open(memfilename,'w')
- memw.write(str(totaltrans))
- memw.close()
- if totaltrans >= 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.