NAME 

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

SYNOPSIS 

tty [OPTION]...

DESCRIPTION 

Print the file name of the terminal connected to standard input.

-s, --silent, --quiet
print nothing, only return an exit status
--help
display this help and exit
--version
output version information and exit

AUTHOR 

Written by David MacKenzie.

REPORTING BUGS 

Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT 

Copyright © 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO 

The full documentation for tty is maintained as a Texinfo manual. If the info and tty programs are properly installed at your site, the command
info tty

should give you access to the complete manual.