defaults:tldr:f4fba

The command defaults read -app "${application}" "${option}" is used to read a specific option value from the default configuration settings of a macOS application.

• defaults is a command-line utility in macOS used to read, write, and manipulate preferences stored in the property list (plist) files.
• read is the action or subcommand of the defaults utility used to read values from the default configuration settings.
• -app "${application}" specifies the application for which the configuration should be read. The ${application} placeholder should be replaced with the actual name of the application.
• "${option}" is the specific option or preference key that you want to read from the application's configuration. The ${option} placeholder should be replaced with the desired option key.

When this command is executed, it will retrieve and display the value associated with the specified option key from the default settings of the given application.