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src/bin/echo/echo.1

.\"	$OpenBSD: echo.1,v 1.22 2014/02/15 09:57:31 jmc Exp $
.\"	$NetBSD: echo.1,v 1.7 1995/03/21 09:04:26 cgd Exp $
.\"
.\" Copyright (c) 1990, 1993
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.\" 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
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.\"	@(#)echo.1	8.1 (Berkeley) 7/22/93
.\"
.Dd $Mdocdate: February 14 2014 $
.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 -- 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 .