You Asked: What Is a Tty Device in Linux?

In essence, tty is short for teletype, but it’s more popularly known as terminal. It’s basically a device (implemented in software nowadays) that allows you to interact with the system by passing on the data (you input) to the system, and displaying the output produced by the system. ttys can be of different types.

What is tty in shell?

A tty is the Unix device name for a physical or virtual terminal connection. A shell is the Unix command interpreter. A console is a generic term for a primary i/o device or interface. In unix terms the console is where the boot/startup messages are sent to. After bootup the console effectively becomes a terminal.

What is tty and PTS in Linux?

A tty is a native terminal device, the backend is either hardware or kernel emulated. A pty (pseudo terminal device) is a terminal device which is emulated by an other program (example: xterm , screen , or ssh are such programs). A pts is the slave part of a pty. (More info can be found in man pty .)