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Shell
A textual interface that interprets the commands you type in, runs the program you want and returns the output (if any)
Terminal window
An interface. It’s a software program where you type your commands (to be sent to the shell) and where you see the output of those commands (returned by the shell).
What does $ mean in the shell prompt?
It means you are not the root user
What is a shell prompt
It indicates where you can type in commands in the terminal window. It is made up of 3 parts. The name of the computer you’re using, the current working directory (cwd) and type of user ($ for non-root)
What is a root user
It’s a user that has admin access