79 lines
2.8 KiB
Groff
79 lines
2.8 KiB
Groff
|
.\" Copyright (c) 1990 The Regents of the University of California.
|
||
|
|
.\" All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" This code is derived from software contributed to Berkeley by
|
||
|
|
.\" the Institute of Electrical and Electronics Engineers, Inc.
|
||
|
|
.\"
|
||
|
|
.\" Redistribution and use in source and binary forms, with or without
|
||
|
|
.\" modification, are permitted provided that the following conditions
|
||
|
|
.\" are met:
|
||
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer.
|
||
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
||
|
|
.\" documentation and/or other materials provided with the distribution.
|
||
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
||
|
|
.\" must display the following acknowledgement:
|
||
|
|
.\" This product includes software developed by the University of
|
||
|
|
.\" California, Berkeley and its contributors.
|
||
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
||
|
|
.\" may be used to endorse or promote products derived from this software
|
||
|
|
.\" without specific prior written permission.
|
||
|
|
.\"
|
||
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
.\" SUCH DAMAGE.
|
||
|
|
.\"
|
||
|
|
.\" @(#)tty.1 6.5 (Berkeley) 7/30/91
|
||
|
|
.\"
|
||
|
|
.Dd July 30, 1991
|
||
|
|
.Dt TTY 1
|
||
|
|
.Os
|
||
|
|
.Sh NAME
|
||
|
|
.Nm tty
|
||
|
|
.Nd Return user's terminal name
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.Nm tty
|
||
|
|
.Op Fl s
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Nm tty
|
||
|
|
utility writes the name of the terminal attached to standard input
|
||
|
|
to standard output.
|
||
|
|
The name that is written is the string returned by
|
||
|
|
.Xr ttyname 3 .
|
||
|
|
If the standard input is not a terminal, the message ``not a tty''
|
||
|
|
is written.
|
||
|
|
The options are as follows:
|
||
|
|
.Bl -tag -width Ds
|
||
|
|
.It Fl s
|
||
|
|
Don't write the terminal name; only the exit status is affected
|
||
|
|
when this option is specified.
|
||
|
|
The
|
||
|
|
.Fl s
|
||
|
|
option is deprecated in favor of the
|
||
|
|
.Dq Li "test -t 0"
|
||
|
|
command.
|
||
|
|
.El
|
||
|
|
.Pp
|
||
|
|
.Nm Tty
|
||
|
|
exits 0 if the standard input is a terminal, 1 if the standard input is
|
||
|
|
not a terminal, and >1 if an error occurs.
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr test 1 ,
|
||
|
|
.Xr ttyname 3
|
||
|
|
.Sh STANDARDS
|
||
|
|
The
|
||
|
|
.Nm tty
|
||
|
|
function is expected to be
|
||
|
|
.St -p1003.2
|
||
|
|
compatible.
|