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.Dd October 8, 2015
.Dt TTY 1
.Os sbase
.Sh NAME
.Nm tty
.Nd print terminal name
.Sh SYNOPSIS
.Nm
.Sh DESCRIPTION
.Nm
writes the name of the terminal open on stdin to stdout.
.Sh EXIT STATUS
.Bl -tag -width Ds
.It 0
stdin is a terminal.
.It 1
stdin is not a terminal.
.It > 1
An error occurred.
.El
.Sh SEE ALSO
.Xr ttyname 3
.Sh STANDARDS
POSIX.1-2013.
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