Install Homebrew if you need to.

To check whether it's already installed, run the following command in your terminal:

brew --version

If Homebrew is installed, the version number will be returned. If not, you'll see a message indicating the command was not found.

In your command line, run the following command:

brew install liquibase

Note: If Homebrew is not in your path, you'll need to update your shell's configuration file to include it, which will also cause Liquibase to be included. If needed, you can follow the post-installation steps provided by Homebrew to set this up.