Mac

If you're using a Mac, the default terminal language is Zsh. Fortunately, Zsh is highly interoperable with bash, and you should be able to follow everything in the tech docs with no problems.

Press Cmd + Space to open Spotlight, type "Terminal", and press Enter. You can also find the Terminal in the Utilities folder within the Applications folder.

Pop open a terminal, type

echo "Hello, bash!"

and hit enter. You should see your message printed in the terminal.