You can do a lot using just commands on Linux. Through the Terminal, you can type the command that you want and perfume many actions and diagnostics. Depending on the distro you are using, you will have a different shell pre-installed (bash, dash, etc.). They can have small differences, but for the majority of command, they will work the same.
You can also change the shell if you like. Here you can see a Linux commands cheat sheet with the main commands and what they do.
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12 Basic Linux commands you should know
There are plenty of Linux distros out there. Some for beginners, with a very familiar interface and many applications built-in already. Others are highly customizable and are often used for different types of servers. What they all have in common is the use of a command-line interface for many commands that can make your life easier. Let’s go and explore the 12 basic Linux commands that can really help you!