Under macOS Catalina, Apple now uses Zsh as the default shell. We love Zsh, but the trusted old bash shell is still included in macOS, and you can quickly switch back to bash if needed.
Zsh is just the default shell for newly created user accounts, that is, for all existing accounts. An updated Mac will continue to use Bash by default unless you change it. Each user account has its own default shell preference.
About the terminal
To change the default shell of a user account on macOS, just run the command
chsh -s (change shell) in a terminal window.
Change the default shell to "Bash" by running the following command:
chsh -s / bin / bash
You must enter the password of your user account. Finally close the terminal window and open it again. They use Bash instead of Zsh.
Change the default shell back to Zsh by running the following command:
chsh -s / bin / zsh
Enter your password when prompted. After closing and reopening the terminal window, use Zsh.
You can view a list of the shells that you can select Run the following command:
cat / etc / shells
In System Settings
You can also change this option graphically in System Preferences if you prefer.
On Mac, go to System Preferences> Users and Groups. Click on the lock symbol and enter your password. Hold down the Ctrl key, click on the name of your user account in the left pane and select "Advanced Options".
Click on the "Login Shell". Drop-down box and select "/ bin / bash" to use Bash as the default shell, or "/ bin / zsh" to use Zsh as the default shell. Click "OK" to save your changes.
Bash under macOS is still outdated.
Note that the version of Bash (Bourne Again SHell) is included in macOS, however, is still pretty much outdated. If you run
bash --version you will notice that Catalina Bash contains 3.2.57 if Bash 5.0 is the latest release. Newer versions are licensed under the GPLv3 license, while Apple continues to distribute a GPLv2 licensed version.
In contrast, the version of Zsh (Z shell) is included in macOS (see
zsh --version ). , Zsh is 5.7.2, the latest release at the time of Catalina's release.
If you want the latest version of Bash, you can install it yourself through Homebrew.