Shulou(Shulou.com)06/01 Report--

In this issue, the editor will bring you about what the three monitoring linux network card traffic scripts are. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

Script 1:

#! / bin/bash

(ifconfig eth0 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| head-N1)

E0roomoutdated oldstones $(ifconfig eth0 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| tail-N1)

> e0roomtotalroomoldbeans $($e0_in_old + $e0_out_old))

E1roominexpensive $(ifconfig eth2 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| head-N1)

E1roomoutdated oldstones $(ifconfig eth2 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| tail-N1)

E1) (($e1_in_old + $e1_out_old))

While true

Do

Sleep 1

E0recent news $(ifconfig eth0 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| head-N1)

E0overview newwritten $(ifconfig eth0 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| tail-N1)

(($e0_in_new + $e0_out_new))

E1newly published $(ifconfig eth2 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| head-N1)

E1outline newwritten $(ifconfig eth2 | grep bytes | awk'{print $2 "" $6}'| egrep-o'[0-9] +'| tail-N1)

E1 (($e1_in_new + $e1_out_new))

($e0_in_new-$e0_in_old) * 8))

($e0_out_new-$e0_out_old) * 8))

($e0_total_new-$e0_total_old) * 8))

($e1_in_new-$e1_in_old) * 8))

E1subscription outbound $(($e1_out_new-$e1_out_old) * 8)

($e1_total_new-$e1_total_old) * 8))

Echo-e "eth0 IN: $e0_in\ t bplink s OUT: $e0_out\ t bplink s TOTAL: $e0_total\ t bplink s"

Echo-e "eth2 IN: $e1_in\ t bplink s OUT: $e1_out\ t bplink s TOTAL: $e1_total\ t bplink s\ n"

E0_in_old=$e0_in_new

E0_out_old=$e0_out_new

E0_total_old=$e0_total_new

E1_in_old=$e1_in_new

E1_out_old=$e1_out_new

E1_total_old=$e1_total_new

Done

Exit 0

Script 2:

#! / bin/bash

# osdba 2008.10.22 monitor the interface's network traffic.

If [$#-ne 3]; then

Echo Useage: $0 interface interval count

Echo Example: $0 eth0 2 10

Exit

Fi

Eth=$1

Count=$3

Interval=$2

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

If [- z "$inbytesfirst"]; then

Echo The network interface $eth is not exits!

Exit 1

Fi

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

Inpacketsfirst=$ (cat / proc/net/dev | tr':''| awk'/'$eth'/ {print $3}')

Outpacketsfirst=$ (cat / proc/net/dev | tr':''| awk'/'$eth'/ {print $11}')

Sleep $interval "s"

ITunes 0

While ["$I"-lt "$count"]

Do

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

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

Inpacketsend=$ (cat / proc/net/dev | tr':''| awk'/'$eth'/ {print $3}')

Outpacketsend=$ (cat / proc/net/dev | tr':''| awk'/'$eth'/ {print $11}')

Bytesin=$ (($inbytesend-$inbytesfirst))

Bytesout=$ (($outbytesend-$outbytesfirst))

Packetsin=$ (($inpacketsend-$inpacketsfirst))

Packetsout=$ (($outpacketsend-$outpacketsfirst))

If ["$bytesin"-lt "0"]; then

Bytesin=$ ((4294967295-$inbytesfirst+$inbytesend))

# echo bytesin $bytesin $inbytesfirst $inbytesend

Fi

If ["$bytesout"-lt "0"]; then

Bytesout=$ ((4294967295-$outbytesfirst+$outbytesend))

# echo bytesout $bytesout $outbytesfirst $outbytesend

Fi

If ["$packetsin"-lt "0"]; then

Packetsin=$ ((4294967295-$inpacketsfirst+$inpacketsend))

# echo packetsin $packetsin $inpacketsfirst $inpacketsend

Fi

If ["$packetsout"-lt "0"]; then

Packetsout=$ ((4294967295-$outpacketsfirst+$outpacketsend))

# echo packetsout $packetsout $outpacketsfirst $outpacketsend

Fi

Bytesin=$ (($bytesin/$interval))

Bytesout=$ (($bytesout/$interval))

Packetsin=$ (($packetsin/$interval))

Packetsout=$ (($packetsout/$interval))

Sumbytesin=$ (($sumbytesin+$bytesin))

Sumbytesout=$ (($sumbytesout+$bytesout))

Sumpacketsin=$ (($sumpacketsin+$packetsin))

Sumpacketsout=$ (($sumpacketsout+$packetsout))

If [$($I% 20))-eq 0]; then

Echo "ifname | in_kbits/s out_kbits/s | in_kBytes/s out_kBytes/s | in_packets/s out_packets/s"

Echo "- |--"

Fi

Echo $eth $bytesin $bytesout $packetsin $packetsout | awk'{printf ("% 9s | d d | d | d\ n", $1).

Inbytesfirst=$inbytesend

Outbytesfirst=$outbytesend

Inpacketsfirst=$inpacketsend

Outpacketsfirst=$outpacketsend

ITunes $(($item1))

Sleep $interval "s"

Done

Sumbytesin=$ (($sumbytesin/$i))

Sumbytesout=$ (($sumbytesout/$i))

Sumpacketsin=$ (($sumpacketsin/$i))

Sumpacketsout=$ (($sumpacketsout/$i))

Echo "- |--"

Echo Average $sumbytesin $sumbytesout $sumpacketsin $sumpacketsout | awk'{printf ("% 9s | d d | d d | d\ n", $1).

Script 3:

#! / bin/bash

# test network width

Function usage

{

Echo "Usage: $0 million?"

Echo "? e.g. $0 eth0 2"

Exit 65

}

If [$#-lt 2]; then

Usage

Fi

Typeset in in_old dif_in

Typeset out out_old dif_out

Typeset timer

Typeset eth

Eth=$1

Timer=$2

In_old=$ (cat / proc/net/dev | grep $eth | sed-e "s /\ (. *\)\:\ (. *\) /\ 2Unig" | awk'{print $1}')

Out_old=$ (cat / proc/net/dev | grep $eth | sed-e "s /\ (. *\)\:\ (. *\) /\ 2Unig" | awk'{print $9}')

While true

Do

Sleep ${timer}

In=$ (cat / proc/net/dev | grep $eth | sed-e "s /\ (. *\)\:\ (. *\) /\ 2Unig" | awk'{print $1}')

Out=$ (cat / proc/net/dev | grep $eth | sed-e "s /\ (. *\)\:\ (. *\) /\ 2Unig" | awk'{print $9}')

Dif_in=$ (in-in_old) / timer))

Dif_out=$ (out-out_old) / timer))

Echo "IN: ${dif_in} Byte/s OUT: ${dif_out} Byte/s"

In_old=$ {in}

Out_old=$ {out}

Done

Exit 0

These are the three scripts for monitoring linux network card traffic shared by Xiaobian. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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