CTTY

Changes the terminal device used to control your computer.

Use the CTTY command if you want to use another device to enter commands.   

Syntax

    CTTY device

Parameter

device
    Specifies the alternative device you want to use to type MS-DOS
    commands. Valid values for the device parameter are PRN, LPT1, LPT2,
    LPT3, CON, AUX, COM1, COM2, COM3, COM4 and NUL.

Related Command

For more information about changing the input device when specifying a
command interpreter, see the <COMMAND> command.