When opening the Terminal app for the first time on a new iMac (macOS Catalina 10.15.1) I notice this message …
The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
The support article mentions “bash” and “Z Shell” and how to change between them. I am guessing that for a semi-technical user like me, who only makes occasional forays into the Terminal app, the choice of shell should not make any difference, but it would be good to have your thoughts and any recommendations on this subject.