Command Line

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Command line interface (or CLI) is an interface which accepts commands from the user, similar to Windows Command Prompt or Linux Terminal.

Implementation

To implement a minimal CLI, you need 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

Disadvantages

Hard for beginners
No multitasking

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