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<title>ENVSUBST</title>
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<h1 align=center>ENVSUBST</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#AUTHOR">AUTHOR</a><br>
<a href="#REPORTING BUGS">REPORTING BUGS</a><br>
<a href="#COPYRIGHT">COPYRIGHT</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
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<a name="NAME"></a>
<h2>NAME</h2>
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<p>envsubst − substitutes environment variables in
shell format strings</p>
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<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
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<p><b>envsubst</b> [<i>OPTION</i>] [<i>SHELL-FORMAT</i>]</p>
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<h2>DESCRIPTION</h2>
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<p>Substitutes the values of environment variables.</p>
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<p><b>Operation mode:</b></p></td>
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<p><b>−v</b>, <b>−−variables</b></p></td>
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<p>output the variables occurring in SHELL-FORMAT</p>
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<p><b>Informative output:</b></p></td>
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<p><b>−h</b>, <b>−−help</b></p></td>
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<p>display this help and exit</p>
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<p><b>−V</b>, <b>−−version</b></p></td>
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<p>output version information and exit</p>
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<p>In normal operation mode, standard input is copied to
standard output, with references to environment variables of
the form $VARIABLE or ${VARIABLE} being replaced with the
corresponding values. If a SHELL-FORMAT is given, only those
environment variables that are referenced in SHELL-FORMAT
are substituted; otherwise all environment variables
references occurring in standard input are substituted.</p>
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<p>When <b>−−variables</b> is used, standard
input is ignored, and the output consists of the environment
variables that are referenced in SHELL-FORMAT, one per
line.</p>
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<h2>AUTHOR</h2>
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<p>Written by Bruno Haible.</p>
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<a name="REPORTING BUGS"></a>
<h2>REPORTING BUGS</h2>
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<p>Report bugs to <bug-gnu-gettext@gnu.org>.</p>
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<h2>COPYRIGHT</h2>
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<p>Copyright © 2003-2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html><br>
This is free software: you are free to change and
redistribute it. There is NO WARRANTY, to the extent
permitted by law.</p>
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<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
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<p>The full documentation for <b>envsubst</b> is maintained
as a Texinfo manual. If the <b>info</b> and <b>envsubst</b>
programs are properly installed at your site, the
command</p>
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<p><b>info envsubst</b></p>
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<p>should give you access to the complete manual.</p>
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