Command Line

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The Command Line Interface or CLI is an interface which accepts commands from the user, similar to Windows Command Prompt or Linux Terminal. Check also Text UI.

Implementation

To implement a minimal CLI, an operating systems needs at least:

• Access to video memory
• Keyboard driver
• String input and comparison
• Some functions to execute on commands

Because of their ease of implementation, CLI's are popular in hobby OS projects.

Advantages

• Speed and control
• Less resources needed
• Scripts to automate tasks
• No need for mouse devices and drivers
• Easily made compatible with serial lines and tcp sockets, so you can get your normal command environment when debugging display drivers or window system

Disadvantages

• Hard for beginner users^[why?]