Use shell scripts to monitor network card Traffic

I suddenly wanted to monitor the network card Traffic in Linux and didn't want to use cacti. I thought it was very troublesome to Configure SNMP. Ready-made tools seem to be useless. Decide to write a script by yourself.

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1. #! /Bin/bash
2. Rx1 = $ (ifconfig $1 | grep "RX bytes" | awk '{print $2}' | awk-F: '{print $2 }')
3. Sleep 1
4. Rxa = $ ($ rx1/1000 ))
5. Rx2 = $ (ifconfig eth0 | grep "RX bytes" | awk '{print $2}' | awk-F: '{print $2 }')
6. Rxb = $ ($ rx2/1000 ))
7. Echo "net traffic is:" $ ($ rxb-$ rxa) K/S

Save as traffic
The usage is as follows:

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1. Chmod 777 traffic
2. Watch./Traffic eth0

The effect is as follows: