In Linux, TTY is an abstract device that allows users to interact with the system. It is short for teletype, which was a device used in the past to send and receive typed messages over a distance. In modern operating systems like Linux, TTY refers to a virtual device that allows users to interact with the system through a terminal emulator.
Here are some key points about TTY in Linux:
- TTY is a subsystem in Linux and Unix that makes process management, line editing, and session management possible at the kernel level.
- TTYs can be physical input devices such as serial ports or virtual devices that allow users to interact with the system.
- The tty command in Linux displays information related to the terminal, including the file name of the terminal connected to standard input.
- TTYs can be of different types, such as graphical consoles or terminal emulators.
Overall, TTY is an important concept in Linux that allows users to interact with the system through a terminal emulator.
