1 |
.\"- |
2 |
.\" Copyright (c) 1990, 1993 |
3 |
.\" The Regents of the University of California. All rights reserved. |
4 |
.\" |
5 |
.\" This code is derived from software contributed to Berkeley by |
6 |
.\" the Institute of Electrical and Electronics Engineers, Inc. |
7 |
.\" |
8 |
.\" Redistribution and use in source and binary forms, with or without |
9 |
.\" modification, are permitted provided that the following conditions |
10 |
.\" are met: |
11 |
.\" 1. Redistributions of source code must retain the above copyright |
12 |
.\" notice, this list of conditions and the following disclaimer. |
13 |
.\" 2. Redistributions in binary form must reproduce the above copyright |
14 |
.\" notice, this list of conditions and the following disclaimer in the |
15 |
.\" documentation and/or other materials provided with the distribution. |
16 |
.\" 4. Neither the name of the University nor the names of its contributors |
17 |
.\" may be used to endorse or promote products derived from this software |
18 |
.\" without specific prior written permission. |
19 |
.\" |
20 |
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
21 |
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 |
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 |
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
24 |
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 |
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 |
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 |
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 |
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 |
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 |
.\" SUCH DAMAGE. |
31 |
.\" |
32 |
.\" @(#)echo.1 8.1 (Berkeley) 7/22/93 |
33 |
.\" $FreeBSD: stable/9/bin/echo/echo.1 215211 2010-11-12 22:43:40Z jilles $ |
34 |
.\" |
35 |
.Dd November 12, 2010 |
36 |
.Dt ECHO 1 |
37 |
.Os |
38 |
.Sh NAME |
39 |
.Nm echo |
40 |
.Nd write arguments to the standard output |
41 |
.Sh SYNOPSIS |
42 |
.Nm |
43 |
.Op Fl n |
44 |
.Op Ar string ... |
45 |
.Sh DESCRIPTION |
46 |
The |
47 |
.Nm |
48 |
utility writes any specified operands, separated by single blank |
49 |
.Pq Ql "\ " |
50 |
characters and followed by a newline |
51 |
.Pq Ql \en |
52 |
character, to the standard |
53 |
output. |
54 |
.Pp |
55 |
The following option is available: |
56 |
.Bl -tag -width flag |
57 |
.It Fl n |
58 |
Do not print the trailing newline character. |
59 |
.El |
60 |
.Pp |
61 |
The end-of-options marker |
62 |
.Fl Fl |
63 |
is not recognized and written literally. |
64 |
.Pp |
65 |
The newline may also be suppressed by appending |
66 |
.Ql \ec |
67 |
to the end of the string, as is done |
68 |
by iBCS2 compatible systems. |
69 |
Note that the |
70 |
.Fl n |
71 |
option as well as the effect of |
72 |
.Ql \ec |
73 |
are implementation-defined in |
74 |
.St -p1003.1-2001 |
75 |
as amended by Cor.\& 1-2002. |
76 |
For portability, |
77 |
.Nm |
78 |
should only be used if the first argument does not start with a hyphen |
79 |
.Pq Ql "-" |
80 |
and does not contain any backslashes |
81 |
.Pq Ql "\e" . |
82 |
If this is not sufficient, |
83 |
.Xr printf 1 |
84 |
should be used. |
85 |
.Pp |
86 |
Most shells provide a builtin |
87 |
.Nm |
88 |
command which tends to differ from this utility |
89 |
in the treatment of options and backslashes. |
90 |
Consult the |
91 |
.Xr builtin 1 |
92 |
manual page. |
93 |
.Sh EXIT STATUS |
94 |
.Ex -std |
95 |
.Sh SEE ALSO |
96 |
.Xr builtin 1 , |
97 |
.Xr csh 1 , |
98 |
.Xr printf 1 , |
99 |
.Xr sh 1 |
100 |
.Sh STANDARDS |
101 |
The |
102 |
.Nm |
103 |
utility conforms to |
104 |
.St -p1003.1-2001 |
105 |
as amended by Cor.\& 1-2002. |