defaults

1. The "defaults" command line tool is used in macOS to read, write, and delete user preferences and settings.
2. It is a powerful utility that allows users to access and modify preferences for various applications and system settings.
3. The tool operates by interacting with the macOS defaults system, which stores preference values in property list (plist) files.
4. Using "defaults", users can view the current values of preferences, change existing preferences, and create new ones.
5. The tool can be used to configure settings for both built-in macOS applications and third-party software.
6. It is commonly used by advanced users, system administrators, and developers to customize and manage various aspects of their macOS environment.
7. "Defaults" commands are typically executed in the Terminal by specifying the domain (application or system) and key (preference) to act upon, along with the desired action (read, write, delete, etc.).