The command line is, at its heart, simply a place where you type commands to the computer. Unfortunately, the price of this power is complexity: nobody ever said that ruling your computer would be easy.
Using the command line, you can perform amazing feats of wizardry and speed, taming your computer and getting it to do precisely what you want. The command line is the ultimate seat of power on your computer.
With more information, if you'd like to learn more. Here's another basic command line tutorial This tutorial is for beginner users who want to learn the basics
