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 © 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.