TTY(I)                       3/15/72                       TTY(I)
NAME
     tty - get typewriter name
SYNOPSIS
     tty
DESCRIPTION
     Tty  gives  the  name  of  the user's typewriter in the form
     `ttyn' for n a digit or letter.  The  actual  path  name  is
     then `/dev/ttyn'.
DIAGNOSTICS
     `not  a tty' if the standard input file is not a typewriter.
BUGS
                              - 1 -