Center for Technical Education
Computer Technology
Internal DOS Commands


ABOUT CTTY
   CTTY is a MS-DOS utility that allows you to change the standard computer input/output device.
CTTY SYNTAX
   CTTY device name
EXAMPLES
   CTTY COM1

       Instructs DOS to handle subsequent input device through the COM1 communications port.

   CTTY CON

       Redirects input and output functions through the default device (usually the keyboard and monitor). This command must be sent from whatever input device is current, for example, a remote terminal connected via a COM port.