Make Tech Easier published a tutorial about using the dig command in Linux.

How to Use the dig Command in Linux

As an administrator, you may find yourself managing a network of Linux servers. The dig command is one of the most basic and important commands that you should know when working with DNS servers. In this tutorial, we show you how to use the dig command through a series of easy-to-follow examples. Tip: if you have the need to use a dynamic DNS for your home server, check out these free dynamic DNS providers. 

How to Use the dig Command in Linux