What is TTY?

TTY stands for Teletypewriter, also known as a teleprinter or teletype. It refers to an electromechanical typewriter that can send and receive messages over a communication channel, typically a serial interface. In modern computing, TTY often refers to a text-based interface or console, emulating the functionality of a physical teletypewriter. It is commonly used for command-line interactions, system administration, and debugging.