How Python can view information about the system's network traffic

Preface

Traffic information can be directly in the /proc/net/dev view, the author implements the program to use the command:

Python net.py interface

Which interface is the name of the network card, what network card to use, the computer has what network card, you can use

sudo ifconfig

To view.

Python implements the following programs:

# Coding:utf-8import SYS, time, OS ' inter-| Receive | Transmit face |bytes packets errs drop FIFO frame compressed multicast|bytes packets errs Drop FIFO colls carrier Compre     ssed lo:28169 364 0 0 0 0 0 0 28169 364 0 0 0 0 0 0 wlan1:7432984 6018 0 0 0 0 0 0 681381 6115 0 0 0 0 0 0vmnet1:0 0 0 0 0 0 0 0 0 56 0 0 0 0 0 0     vmnet8:0.0 0 0 0 0 0 0 0 0 0 0 0 eth0:0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "' _unit_=[' B ', ' KB ', ' MB ', ' GB ', ' TB ']def Get_net_data (interface): For line in open ('/proc/net/ Dev ', ' r '): If Line.split (': ') [0].find (interface) >=0:return map (int, line.split (': ') [1].split ()) def convert_by Tes_to_string (b): cnt = 0 while b >= 1024.0:b = float (b)/1024.0 cnt + = 1 return '%.2f%s '% (b,_unit_[cnt]) if __name__ = = ' __main__ ': interface = sys.argv[1] while True:neT_data = Get_net_data (interface) receive_data_bytes = net_data[0] transmit_data_bytes = net_data[8] Os.system (' cl Ear ') print ' interface:%s, Receive Data:%s Transmit data:%s '% (Interface, convert_bytes_to_string (receive_data_ bytes), convert_bytes_to_string (transmit_data_bytes)) Time.sleep (1)

The entrance of the program if name=='main' begins at the beginning, first through the parameter obtains interface , then calls the get_net_data() function obtains the traffic information, next is some data processing process.

Summarize

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