Ankur Gupta
Ankur Gupta
Web developer by profession, Over 10 years experience of building websites and web applications. Currently working on Epaper CMS Cloud (Software As Service based product). Special interest in computer and technology. After writing on the blogger platform for years, started his own tech portal Antarjaal.In.

In the computer software world, you must have been hit by words like GUI, CLI and sometimes TUI. Let’s understand what are these things?

GUI (Graphical User Interface)

GUI means Graphical User interface. You must have heard this word most commonly. It is the GUI which has enabled common user to use computer. A GUI application is an application that can be run with a mouse, touchpad, or touchscreen. The mouse pointer is used to execute its various functions. Windows and Macintosh are GUI based operating systems. In Linux, desktop environments like Gnome, KDE etc. provide graphical interfaces.

GUI Interface in Libre office Writer Linux

CLI (Command Line Interface)

The CLI is a command line program that accepts text input to perform a certain task. Basically, any application that you can use via commands in the terminal falls into this category.

In the early days of computers did not had a GUI. So at that time people used to work on computer only through the command line. Even today, you can use the command line through PowerShell and the command line prompt in Windows, and the terminal in Linux. Many GUI application use command line in their backend.

Command Line Interface CLI

TUI (Terminal User Interface)

TUI ie Terminal User Interface falls between GUI and CLI. It can also be called a kind of text based GUI. Before the arrival of the GUI, everything used to run on the command line, then in that time the terminal user interface provided a kind of GUI on the command line. TUI programs can be run via a mouse or keyboard. The best examples of TUIs are terminal-running games, Open Suse Yast, Aptitude.

Terminal User Interface TUI

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