Find Public IP using Linux Command

Author : Piyush Gupta

Public IP is used for communication between computers over the Internet. A computer running with public IP is accessible all over the world using the Internet. So we can say that it is the identity of the computer on the internet. Now the question is how do we know our public IP?. For computers having GUI can easily get there IP using web tools but how to get public IP of the computers having terminal access only. The solution is here – use one of the following commands to find public IP of your system using Linux terminal. These are also useful to use in a shell script.

Find Public IP using Linux Command

Command 1 –

Use dig command to find your public IP address. The dig command is a DNS lookup utility for Linux systems to look up your public IP address by connecting to the OpenDNS servers.

dig +short myip.opendns.com @resolver1.opendns.com

Command 2 –

Use wget command to get your Public IP address as below example.

wget http://ipecho.net/plain -O - -q ; echo

Command 3,4,5 –

Use curl command to get your Public address.

curl ipecho.net/plain; echo

curl icanhazip.com

curl ifconfig.me

Get Public IP in Shell Script

We can simply use following commands in our shell script get our computers public IP and store them in a variable to use anywhere in a shell script.

#!/bin/bash

PUBLIC_IP=`wget http://ipecho.net/plain -O - -q ; echo`
echo $PUBLIC_IP