How to use Shell script to view system traffic in real time

This article introduces the relevant knowledge of "how to use Shell scripts to view system traffic in real time". 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

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