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10 <h1 align=center>ENVSUBST</h1>
11 <a href="#NAME">NAME</a><br>
12 <a href="#SYNOPSIS">SYNOPSIS</a><br>
13 <a href="#DESCRIPTION">DESCRIPTION</a><br>
14 <a href="#AUTHOR">AUTHOR</a><br>
15 <a href="#REPORTING BUGS">REPORTING BUGS</a><br>
16 <a href="#COPYRIGHT">COPYRIGHT</a><br>
17 <a href="#SEE ALSO">SEE ALSO</a><br>
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28 <p>envsubst − substitutes environment variables in
29 shell format strings</p>
32 <a name="SYNOPSIS"></a>
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40 <p><b>envsubst</b> [<i>OPTION</i>] [<i>SHELL-FORMAT</i>]</p>
43 <a name="DESCRIPTION"></a>
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51 <p>Substitutes the values of environment variables.</p>
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60 <p><b>Operation mode:</b></p></td>
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68 <p><b>−v</b>, <b>−−variables</b></p></td>
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76 <p>output the variables occurring in SHELL-FORMAT</p>
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85 <p><b>Informative output:</b></p></td>
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93 <p><b>−h</b>, <b>−−help</b></p></td>
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101 <p>display this help and exit</p>
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110 <p><b>−V</b>, <b>−−version</b></p></td>
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118 <p>output version information and exit</p>
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127 <p>In normal operation mode, standard input is copied to
128 standard output, with references to environment variables of
129 the form $VARIABLE or ${VARIABLE} being replaced with the
130 corresponding values. If a SHELL-FORMAT is given, only those
131 environment variables that are referenced in SHELL-FORMAT
132 are substituted; otherwise all environment variables
133 references occurring in standard input are substituted.</p>
135 <p>When <b>−−variables</b> is used, standard
136 input is ignored, and the output consists of the environment
137 variables that are referenced in SHELL-FORMAT, one per
141 <a name="AUTHOR"></a>
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149 <p>Written by Bruno Haible.</p>
152 <a name="REPORTING BUGS"></a>
153 <h2>REPORTING BUGS</h2>
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160 <p>Report bugs to <bug-gnu-gettext@gnu.org>.</p>
163 <a name="COPYRIGHT"></a>
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171 <p>Copyright © 2003-2007 Free Software Foundation, Inc.
172 License GPLv3+: GNU GPL version 3 or later
173 <http://gnu.org/licenses/gpl.html><br>
174 This is free software: you are free to change and
175 redistribute it. There is NO WARRANTY, to the extent
176 permitted by law.</p>
179 <a name="SEE ALSO"></a>
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187 <p>The full documentation for <b>envsubst</b> is maintained
188 as a Texinfo manual. If the <b>info</b> and <b>envsubst</b>
189 programs are properly installed at your site, the
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199 <p><b>info envsubst</b></p>
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208 <p>should give you access to the complete manual.</p>