I recently purchase a 2019 27" iMac from the Apple refurbished store to use as my main desktop machine at home. Compiles now fly and I love the 5K screen resolution.
The only problem is that I reinstalled Catalina from scratch and realized that Apple has changed the default shell from bash to zsh. The version of bash installed is very old so I decided to upgrade to a newer version of bash (as of this writing, 5.0.16). I have a lot of scripts I use for development and I don’t want to rewrite them.
To get the latest version of bash, I use Homebrew:
brew install bash
Since Homebrew installs to /usr/local/bin, you need to update your system shells and add
/usr/local/bin/bash to the end of the
sudo vi /etc/shells
After you add bash you can use the
chsh command to change your shell:
chsh -s /usr/local/bin/bash
Stop and restart your terminal sessions to get the new version of bash.