Linux commands are like magic words that help you control your computer by typing them into the terminal, a text-only interface. These commands allow you to do tasks quickly, like moving files, installing software, or checking network connections, without needing to click around with a mouse. For example, typing "ls" lists all the files in a directory, and "sudo apt-get install" helps you install new applications. Learning these commands might seem tough at first, but once you get the hang of it, they make using Linux much more powerful and efficient.