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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <!-- This manual is for GNU Texinfo (version 6.8, 8 June 2021), a documentation system that can produce both online information and a printed manual from a single source using semantic markup. Copyright (C) 1988, 1990-1993, 1995-1999, 2001-2021 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". --> <title>@env (GNU Texinfo 6.8)</title> <meta name="description" content="@env (GNU Texinfo 6.8)"> <meta name="keywords" content="@env (GNU Texinfo 6.8)"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="texi2any"> <meta name="viewport" content="width=device-width,initial-scale=1"> <link href="index.html" rel="start" title="Top"> <link href="Command-and-Variable-Index.html" rel="index" title="Command and Variable Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Indicating.html" rel="up" title="Indicating"> <link href="_0040file.html" rel="next" title="@file"> <link href="_0040var.html" rel="prev" title="@var"> <style type="text/css"> <!-- a.copiable-anchor {visibility: hidden; text-decoration: none; line-height: 0em} a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} span:hover a.copiable-anchor {visibility: visible} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <div class="subsection" id="g_t_0040env"> <div class="header"> <p> Next: <a href="_0040file.html" accesskey="n" rel="next"><code>@file</code>{<var>file-name</var>}</a>, Previous: <a href="_0040var.html" accesskey="p" rel="prev"><code>@var</code>{<var>metasyntactic-variable</var>}</a>, Up: <a href="Indicating.html" accesskey="u" rel="up">Indicating Definitions, Commands, etc.</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Command-and-Variable-Index.html" title="Index" rel="index">Index</a>]</p> </div> <hr> <span id="g_t_0040env_007benvironment_002dvariable_007d"></span><h4 class="subsection">6.1.8 <code>@env</code>{<var>environment-variable</var>}</h4> <span id="env"></span><span id="index-env"></span> <p>Use the <code>@env</code> command to indicate environment variables, as used by many operating systems, including GNU. Do not use it for <em>meta</em>syntactic variables; use <code>@var</code> for those (see the previous section). </p> <p><code>@env</code> is equivalent to <code>@code</code> in its effects. For example: </p> <div class="example"> <pre class="example">The @env{PATH} environment variable … </pre></div> <p>produces </p><blockquote> <p>The <code>PATH</code> environment variable … </p></blockquote> </div> </body> </html>