Command-Line Interface (CLI) is a computerย user interfaceย (UI) that utilizes a set of pre-programmed commands in a text-based environment to manipulate files, applications andย operating systemย configuration.
While most of the commercial operating systems today ship with aย GUIย (Graphical User Interface) by default, a majority of the server OSs are still operated using CLI. Command-line interface is also accessible in GUI environments usingย terminal emulatorย programs.
