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//usr/share/doc/gettext/envsubst.1.html
<!-- Creator : groff version 1.22.3 --> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta name="generator" content="groff -Thtml, see www.gnu.org"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta name="Content-Style" content="text/css"> <style type="text/css"> p { margin-top: 0; margin-bottom: 0; vertical-align: top } pre { margin-top: 0; margin-bottom: 0; vertical-align: top } table { margin-top: 0; margin-bottom: 0; vertical-align: top } h1 { text-align: center } </style> <title>ENVSUBST</title> </head> <body> <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> <hr> <h2>NAME <a name="NAME"></a> </h2> <p style="margin-left:11%; margin-top: 1em">envsubst - substitutes environment variables in shell format strings</p> <h2>SYNOPSIS <a name="SYNOPSIS"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b>envsubst</b> [<i>OPTION</i>] [<i>SHELL-FORMAT</i>]</p> <h2>DESCRIPTION <a name="DESCRIPTION"></a> </h2> <p style="margin-left:11%; margin-top: 1em">Substitutes the values of environment variables.</p> <p style="margin-left:11%; margin-top: 1em"><b>Operation mode: <br> -v</b>, <b>--variables</b></p> <p style="margin-left:22%;">output the variables occurring in SHELL-FORMAT</p> <p style="margin-left:11%; margin-top: 1em"><b>Informative output: <br> -h</b>, <b>--help</b></p> <p style="margin-left:22%;">display this help and exit</p> <p style="margin-left:11%;"><b>-V</b>, <b>--version</b></p> <p style="margin-left:22%;">output version information and exit</p> <p style="margin-left:11%; margin-top: 1em">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> <p style="margin-left:11%; margin-top: 1em">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> <h2>AUTHOR <a name="AUTHOR"></a> </h2> <p style="margin-left:11%; margin-top: 1em">Written by Bruno Haible.</p> <h2>REPORTING BUGS <a name="REPORTING BUGS"></a> </h2> <p style="margin-left:11%; margin-top: 1em">Report bugs in the bug tracker at <https://savannah.gnu.org/projects/gettext> or by email to <bug-gettext@gnu.org>.</p> <h2>COPYRIGHT <a name="COPYRIGHT"></a> </h2> <p style="margin-left:11%; margin-top: 1em">Copyright © 2003-2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://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> <h2>SEE ALSO <a name="SEE ALSO"></a> </h2> <p style="margin-left:11%; margin-top: 1em">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> <p style="margin-left:22%; margin-top: 1em"><b>info envsubst</b></p> <p style="margin-left:11%; margin-top: 1em">should give you access to the complete manual.</p> <hr> </body> </html>
