How to check my ip in Linux

In my next exercise, I have to know my IP. In order to know my IP, use the command:

$ifconfig -a


The inet addr under eth0 is my IP address. It's the IP behind router, not to the public.

Thank you for reading this article How to check my ip in Linux With URL https://x-tutorials.blogspot.com/2011/01/how-to-check-my-ip-in-linux.html. Also a time to read the other articles.