Terminal on MacBook Pro

MuchTolurn wrote:

This is the message in my terminal - The default interactive shell is now zsh.

To update your account to use zsh, please run `chsh -s /bin/zsh`.

What should I do to run commands in my terminal?

If you hardly use Terminal you really do not have to do anything. Forget about it.

If you want to move to the new default shell as you message indicates then simply copy and paste:

chsh -s /bin/zsh

use the enter\return key to execute the command

To see you current shell:

 echo $SHELL

To see all your options:

 cat /etc/shells

ref: Change the default shell in Terminal on Mac

Depending on your answer to the following, I may have a more informative response for you:

1. You do/don't have a need to fequently launch the Terminal application, or you are not familiar with a UNIX command line in the Terminal.
2. You do/don't write scripts, run shell commands, or have a need for a more powerful shell than the 2007-era Bash shell.