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Annotation of src/usr.bin/tty/tty.1, Revision 1.1

1.1     ! deraadt     1: .\"    $NetBSD: tty.1,v 1.4 1994/12/07 00:46:55 jtc Exp $
        !             2: .\"
        !             3: .\" Copyright (c) 1990, 1993
        !             4: .\"    The Regents of the University of California.  All rights reserved.
        !             5: .\"
        !             6: .\" This code is derived from software contributed to Berkeley by
        !             7: .\" the Institute of Electrical and Electronics Engineers, Inc.
        !             8: .\"
        !             9: .\" Redistribution and use in source and binary forms, with or without
        !            10: .\" modification, are permitted provided that the following conditions
        !            11: .\" are met:
        !            12: .\" 1. Redistributions of source code must retain the above copyright
        !            13: .\"    notice, this list of conditions and the following disclaimer.
        !            14: .\" 2. Redistributions in binary form must reproduce the above copyright
        !            15: .\"    notice, this list of conditions and the following disclaimer in the
        !            16: .\"    documentation and/or other materials provided with the distribution.
        !            17: .\" 3. All advertising materials mentioning features or use of this software
        !            18: .\"    must display the following acknowledgement:
        !            19: .\"    This product includes software developed by the University of
        !            20: .\"    California, Berkeley and its contributors.
        !            21: .\" 4. Neither the name of the University nor the names of its contributors
        !            22: .\"    may be used to endorse or promote products derived from this software
        !            23: .\"    without specific prior written permission.
        !            24: .\"
        !            25: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            26: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            27: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            28: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            29: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            30: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            31: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            32: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            33: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            34: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            35: .\" SUCH DAMAGE.
        !            36: .\"
        !            37: .\"    @(#)tty.1       8.1 (Berkeley) 6/6/93
        !            38: .\"
        !            39: .Dd June 6, 1993
        !            40: .Dt TTY 1
        !            41: .Os
        !            42: .Sh NAME
        !            43: .Nm tty
        !            44: .Nd return user's terminal name
        !            45: .Sh SYNOPSIS
        !            46: .Nm tty
        !            47: .Op Fl s
        !            48: .Sh DESCRIPTION
        !            49: The
        !            50: .Nm tty
        !            51: utility writes the name of the terminal attached to standard input
        !            52: to standard output.
        !            53: The name that is written is the string returned by
        !            54: .Xr ttyname 3 .
        !            55: If the standard input is not a terminal, the message ``not a tty''
        !            56: is written.
        !            57: The options are as follows:
        !            58: .Bl -tag -width Ds
        !            59: .It Fl s
        !            60: Don't write the terminal name; only the exit status is affected
        !            61: when this option is specified.
        !            62: The
        !            63: .Fl s
        !            64: option is deprecated in favor of the
        !            65: .Dq Li "test -t 0"
        !            66: command.
        !            67: .El
        !            68: .Pp
        !            69: .Nm Tty
        !            70: exits 0 if the standard input is a terminal, 1 if the standard input is
        !            71: not a terminal, and >1 if an error occurs.
        !            72: .Sh SEE ALSO
        !            73: .Xr test 1 ,
        !            74: .Xr ttyname 3
        !            75: .Sh STANDARDS
        !            76: The
        !            77: .Nm tty
        !            78: utility conforms to
        !            79: .St -p1003.2-92 .