Contents of /trunk/mkinitrd-magellan/klibc/usr/dash/bltin/echo.1
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Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File size: 3602 byte(s)
Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File size: 3602 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | .\" Copyright (c) 1991, 1993 |
2 | .\" The Regents of the University of California. All rights reserved. |
3 | .\" Copyright (c) 1997-2005 |
4 | .\" Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. |
5 | .\" |
6 | .\" This code is derived from software contributed to Berkeley by |
7 | .\" Kenneth Almquist. |
8 | .\" Copyright 1989 by Kenneth Almquist |
9 | .\" |
10 | .\" Redistribution and use in source and binary forms, with or without |
11 | .\" modification, are permitted provided that the following conditions |
12 | .\" are met: |
13 | .\" 1. Redistributions of source code must retain the above copyright |
14 | .\" notice, this list of conditions and the following disclaimer. |
15 | .\" 2. Redistributions in binary form must reproduce the above copyright |
16 | .\" notice, this list of conditions and the following disclaimer in the |
17 | .\" documentation and/or other materials provided with the distribution. |
18 | .\" 3. Neither the name of the University nor the names of its contributors |
19 | .\" may be used to endorse or promote products derived from this software |
20 | .\" without specific prior written permission. |
21 | .\" |
22 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | .\" SUCH DAMAGE. |
33 | .\" |
34 | .\" @(#)echo.1 8.1 (Berkeley) 5/31/93 |
35 | .\" |
36 | .Dd May 31, 1993 |
37 | .Dt ECHO 1 |
38 | .Os |
39 | .Sh NAME |
40 | .Nm echo |
41 | .Nd produce message in a shell script |
42 | .Sh SYNOPSIS |
43 | .Nm |
44 | .Op Fl n | Fl e |
45 | .Ar args ... |
46 | .Sh DESCRIPTION |
47 | .Nm |
48 | prints its arguments on the standard output, separated by spaces. |
49 | Unless the |
50 | .Fl n |
51 | option is present, a newline is output following the arguments. |
52 | The |
53 | .Fl e |
54 | option causes |
55 | .Nm |
56 | to treat the escape sequences specially, as described in the following |
57 | paragraph. |
58 | The |
59 | .Fl e |
60 | option is the default, and is provided solely for compatibility with |
61 | other systems. |
62 | Only one of the options |
63 | .Fl n |
64 | and |
65 | .Fl e |
66 | may be given. |
67 | .Pp |
68 | If any of the following sequences of characters is encountered during |
69 | output, the sequence is not output. Instead, the specified action is |
70 | performed: |
71 | .Bl -tag -width indent |
72 | .It Li \eb |
73 | A backspace character is output. |
74 | .It Li \ec |
75 | Subsequent output is suppressed. This is normally used at the end of the |
76 | last argument to suppress the trailing newline that |
77 | .Nm |
78 | would otherwise output. |
79 | .It Li \ef |
80 | Output a form feed. |
81 | .It Li \en |
82 | Output a newline character. |
83 | .It Li \er |
84 | Output a carriage return. |
85 | .It Li \et |
86 | Output a (horizontal) tab character. |
87 | .It Li \ev |
88 | Output a vertical tab. |
89 | .It Li \e0 Ns Ar digits |
90 | Output the character whose value is given by zero to three digits. |
91 | If there are zero digits, a nul character is output. |
92 | .It Li \e\e |
93 | Output a backslash. |
94 | .El |
95 | .Sh HINTS |
96 | Remember that backslash is special to the shell and needs to be escaped. |
97 | To output a message to standard error, say |
98 | .Pp |
99 | .D1 echo message \*[Gt]\*[Am]2 |
100 | .Sh BUGS |
101 | The octal character escape mechanism |
102 | .Pq Li \e0 Ns Ar digits |
103 | differs from the |
104 | C language mechanism. |
105 | .Pp |
106 | There is no way to force |
107 | .Nm |
108 | to treat its arguments literally, rather than interpreting them as |
109 | options and escape sequences. |