Linux Hint published a tutorial about getting a public IP address from Terminal on Ubuntu 20.04.

Get Public IP from Terminal on Ubuntu 20.04

In computer networking, an IP address is a numerical identifier to identify a certain device that uses the Internet Protocol for communication. The IP address may be assigned temporarily or permanently to the device. In this article, how to get the public IP address of your device from the terminal on Ubuntu 20.04.

Get Public IP from Terminal on Ubuntu 20.04 – Linux Hint