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
output version information and exit
Written by David MacKenzie.
Report tty bugs to email@example.com
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Copyright (C) 2009 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.
The full documentation for tty is maintained as a Texinfo manual. If
the info and tty programs are properly installed at your site, the com-
info coreutils 'tty invocation'
should give you access to the complete manual.
GNU coreutils 7.4 January 2015 TTY(1)
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