A command-line user interface (CLI) is a means of interacting with a computer operating system or application by entering textual commands in a shell or terminal window. The Scuba CLI allows you to manage and monitor the Scuba application from the command line. Each command has a list of associated arguments and options that allow you to tailor an operation to your specific needs.
An argument (or parameter) is an item of information provided to a program when it is started. A program can have many command-line arguments that identify sources or destinations of information, or that alter the operation of the program. An option (or flag) modifies the operation of a command.