7e6cabd06e
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
111 lines
3.1 KiB
Groff
111 lines
3.1 KiB
Groff
.\"-
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.\" Copyright (c) 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)echo.1 8.1 (Berkeley) 7/22/93
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.\" $FreeBSD$
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.\"
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.Dd October 5, 2016
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.Dt ECHO 1
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.Os
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.Sh NAME
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.Nm echo
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.Nd write arguments to the standard output
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.Sh SYNOPSIS
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.Nm
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.Op Fl n
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.Op Ar string ...
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.Sh DESCRIPTION
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The
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.Nm
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utility writes any specified operands, separated by single blank
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.Pq Ql "\ "
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characters and followed by a newline
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.Pq Ql \en
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character, to the standard
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output.
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.Pp
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The following option is available:
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.Bl -tag -width flag
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.It Fl n
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Do not print the trailing newline character.
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.El
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.Pp
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The end-of-options marker
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.Fl Fl
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is not recognized and written literally.
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.Pp
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The newline may also be suppressed by appending
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.Ql \ec
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to the end of the string, as is done
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by iBCS2 compatible systems.
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Note that the
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.Fl n
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option as well as the effect of
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.Ql \ec
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are implementation-defined in
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.St -p1003.1-2001
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as amended by Cor.\& 1-2002.
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For portability,
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.Nm
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should only be used if the first argument does not start with a hyphen
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.Pq Ql "-"
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and does not contain any backslashes
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.Pq Ql "\e" .
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If this is not sufficient,
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.Xr printf 1
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should be used.
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.Pp
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Most shells provide a builtin
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.Nm
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command which tends to differ from this utility
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in the treatment of options and backslashes.
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Consult the
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.Xr builtin 1
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manual page.
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.Sh EXIT STATUS
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.Ex -std
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.Sh SEE ALSO
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.Xr builtin 1 ,
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.Xr csh 1 ,
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.Xr printf 1 ,
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.Xr sh 1
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.Sh STANDARDS
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The
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.Nm
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utility conforms to
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.St -p1003.1-2001
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as amended by Cor.\& 1-2002.
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.At v2 .
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