If you are using a Mac computer with the macOS Catalina operating system, your installation requires a few extra steps.
1. Check your macOS version:
Go to the Apple icon at the top left, then select About This Mac.
If the version is macOS Catalina then you should continue to the steps below. If it's lower than 10.15 e.g. 10.14 (Mojave) or 10.13 (High Sierra) then you can skip this lesson and continue to the next.
2. Open up Terminal
Click on Spotlight at the top right and search for the Terminal application. Double click on it to open. (Terminal is installed by default in macOS.
3. Change your Terminal shell
If you see a message in Terminal that looks like this:
Then you can remove the message by going to Terminal --> Preferences
and changing the "Shells open with" to the "Command" radio button and change the text to
/bin/zsh
and hit enter.
4. Confirm you are using zsh
Close down Terminal and re-open it using Spotlight (see Step 2). Check the shell that is used in this new window by typing the following command into the Terminal and hit enter.
echo $SHELL
e.g.
If you see /bin/zsh like in the screenshot above then congratulations, you can continue to the next lesson.
If you see /bin/bash then go through Step 3 until it reads /bin/zsh.
The reason why we have to do this is because of licensing changes. You can read more about it here: