TTY(7)                                                     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), ports(7).

     ORIGIN
          AT&T V.3

































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