Here is how a terminal looks like in Linux:

Picture of a virtual terminal in Linux

Picture of a ‘virtual’ terminal in Linux

In the terminal, you are interacting with a program called a shell.

This program waits for you to type commands with the keyboard.

In this lecture, you will just need to know very few commands:

To learn more, see the lectures ‘how computers work’ and ‘how to use a computer interactively’.