In zsh, it should look like this when you launch bash in the shell: ~ $ bash The default interactive shell is now zsh. To update your account to use zsh, ple

In zsh, it should look like this when you launch bash in the shell: ~ $ bash 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 https://support.apple.com/kb/HT208050. bash-3.2$ ~ So it's easy to switch between bash and zsh. It's quite rare for me to be in situation where I need to do something that only plays nice with bash, though.