How to use Shell script to view real-time traffic of network card

This article introduces the knowledge of "how to use Shell script to view the real-time traffic of network card". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The code is as follows:

#! / bin/bash

While ["1"]

Do

Eth=$1

RXpre=$ (cat / proc/net/dev | grep $eth | tr: "" | awk'{print $2}')

TXpre=$ (cat / proc/net/dev | grep $eth | tr: "" | awk'{print $10}')

Sleep 1

RXnext=$ (cat / proc/net/dev | grep $eth | tr: "" | awk'{print $2}')

TXnext=$ (cat / proc/net/dev | grep $eth | tr: "" | awk'{print $10}')

Clear

Echo-e "\ t RX `date +% KRV% M:% S` TX"

RX=$ ((${RXnext}-${RXpre}))

TX=$ ((${TXnext}-${TXpre}))

If [$RX-lt 1024]; then

RX= "${RX} Bamp s"

Elif [$RX-gt 1048576]; then

RX=$ (echo $RX | awk'{print $1max 1048576 "MB/s"}')

Else

RX=$ (echo $RX | awk'{print $1amp 1024 "KB/s"}')

Fi

If [$TX-lt 1024]; then

TX= "${TX} Bamp s"

Elif [$TX-gt 1048576]; then

TX=$ (echo $TX | awk'{print $1max 1048576 "MB/s"}')

Else

TX=$ (echo $TX | awk'{print $1amp 1024 "KB/s"}')

Fi

Echo-e "$eth\ t $RX $TX"

Done

Call method:

The code is as follows:

. / traff.sh eth2

Or

Bash traff.sh eth2

The network card traffic can be displayed in real time:

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