TTY(1)

NAME
       tty  -  print  the  file name of the terminal connected to
       standard input

SYNOPSIS
       tty [-s] [--silent] [--quiet] [--help] [--version]

DESCRIPTION
       This documentation is no longer being maintained  and  may
       be inaccurate or incomplete.  The Texinfo documentation is
       now the authoritative source.

       This manual page documents the GNU version  of  tty.   tty
       prints  the file name of the tty connected to its standard
       input.  It prints `not a tty' if the standard input is not
       a tty. Its exit status is:
       0 if the standard input is a tty
       1 if the standard input is not a tty
       2 if given incorrect arguments
       3 if a write error occurs

   OPTIONS
       --help Print  a  usage message on standard output and exit
              successfully.

       -s, --silent, --quiet
              Print nothing; only return an exit status.

       --version
              Print version information on standard  output  then
              exit successfully.