Provided by:
coreutils_6.10-6ubuntu1_i386 
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 © 2008 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
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.
GNU coreutils 6.9.92.4-f088d-dirtJanuary 2008 TTY(1)