.TH TTY 1L "GNU Shell Utilities" "FSF" \" -*- nroff -*-
.SH NAME
tty \- print the file name of the terminal connected to standard input
.SH SYNOPSIS
.B tty
[\-s] [\-\-silent] [\-\-quiet] [\-\-help] [\-\-version]
.SH DESCRIPTION
This manual page
documents the GNU version of
.BR tty .
.B 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:
.nf
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
.fi
.SS OPTIONS
.TP
.I "\-\-help"
Print a usage message on standard output and exit successfully.
.TP
.I "\-s, \-\-silent, \-\-quiet"
Print nothing; only return an exit status.
.TP
.I "\-\-version"
Print version information on standard output then exit successfully.