bin/echo/echo.1 - master - nerfur/openbsd-src

bin/echo/echo.1
107 строк3 KB
schwarze
improve markup quality in the cases found by the new "--" style message
16 мар 2018, 19:58
16 мар 2018, 19:58519cd48
.\"	$OpenBSD: echo.1,v 1.24 2018/03/16 16:58:26 schwarze Exp $
.\"	$NetBSD: echo.1,v 1.7 1995/03/21 09:04:26 cgd Exp $
.\"
.\" Copyright (c) 1990, 1993
.\"	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.
.\"
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.\" 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. 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.
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\"	@(#)echo.1	8.1 (Berkeley) 7/22/93
.\"
.Dd $Mdocdate: March 16 2018 $
.Dt ECHO 1
.Os
.Sh NAME
.Nm echo
.Nd write arguments to the standard output
.Sh SYNOPSIS
.Nm echo
.Op Fl n
.Op Ar string ...
.Sh DESCRIPTION
The
.Nm
utility writes any specified operands, separated by single blank
.Pq Sq \ \&
characters and followed by a newline
.Pq Sq \en
character, to the standard
output.
.Pp
When no operands are given, only the newline is written.
The
.Fl \-
operand,
which generally denotes an end to option processing,
is treated as part of
.Ar string .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl n
Do not print the trailing newline character.
.El
.Sh EXIT STATUS
.Ex -std echo
.Sh SEE ALSO
.Xr csh 1 ,
.Xr ksh 1 ,
.Xr printf 1
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2008
specification.
.Pp
The flag
.Op Fl n
conflicts with the behaviour mandated by the
X/Open System Interfaces option of the
.St -p1003.1-2008
specification,
which says it should be treated as part of
.Ar string .
Additionally,
.Nm
does not support any of the backslash character sequences mandated by XSI.
.Pp
.Nm
also exists as a built-in to
.Xr csh 1
and
.Xr ksh 1 ,
though with a different syntax.
.Pp
Where portability is paramount, use
.Xr printf 1 .
.Sh HISTORY
An
.Nm
utility appeared in
.At v2 .