Bash shell script to list Ethernet interfaces names and IPaddress on linux server.

If there are multiple IP addresses public, private, backup, etc are in use on linux server it takes a bit more of time to scroll down through the output of 'ifconfig' command and find the IP address assigned to it.

I have created a shell script nic.sh which list all the Ethernet interfaces and IP address assigned to them on Linux server.

#!/bin/bash

nic=$(ifconfig | cut -d" " -f1 | sed '/^$/d' | awk -vORS=',' '{ print $1}' | sed -e s/,$//g)

OFS=IFS
IFS=','
read -ra i <<< "$nic"
for i in "${i[@]}"; do
echo "$i ---> $(ifconfig | grep -A 1 -i $i | sed -n '2p' | awk -F" " '{ print $2 }' | cut -d":" -f2)"
done


root@localhost:/root>./nic.sh
eth0 ---> 192.168.1.19
lo ---> 127.0.0.1