tty(7)                           UNIX System V                           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)




































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