tty(7D)

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

     ports(1M), console(7D)