通过 IP 地址查找网络接口 - Linux/Bash

Question

I'm wondering how I can query by IP address using sed, and it will show which interface name that is using it.

For example..

ipconfig -a | grep 10.0.0.10

I would expect it to come back with ETH0

Answer 1

You should use this comand :

ifconfig | grep -B1 "inet addr:10.0.0.10" | awk '$1!="inet" && $1!="--" {print $1}'

Hope this help !

Answer 2

ifconfig | grep -B1 10.0.0.10 | grep -o "^\w*"

Answer 3

If you want sed specific solution you may try this. Its little hard to digest how it works , but finally this combination works.

 ifconfig | sed -n '/addr:10.0.0.10/{g;H;p};H;x' | awk '{print $1}'

If you want to take it as an argument via script use "$1" or so instead if 10.0.0.10.

Sed manual for reference : http://www.gnu.org/software/sed/manual/sed.html#tail

Answer 4

ip -br -4 a sh | grep 10.0.0.10 | awk '{print $1}'