TTY(7)               INTERACTIVE UNIX System               TTY(7)



          NAME
               tty - controlling terminal interface

          DESCRIPTION
               The file /dev/tty is, in each process, a synonym for the
               control terminal associated with the process group of that
               process, if any.  It is useful for programs or shell
               sequences that wish to be sure of writing messages on the
               terminal no matter how output has been redirected.  It can
               also be used for programs that demand the name of a file for
               output, when typed output is desired and it is tiresome to
               find out what terminal is currently in use.

          FILES
               /dev/tty
               /dev/tty*

          SEE ALSO
               console(7).




































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