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14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<title>suexec - Switch user before executing external programs - Apache HTTP Server</title>
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14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="../">Version 2.1</a> > <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>suexec - Switch user before executing external programs</h1>
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<p><span>Available Languages: </span><a href="/en/programs/suexec.html" title="English"> en </a></p>
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe <p><code>suexec</code> is used by the Apache HTTP Server to switch
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe to another user before executing CGI programs. In order to achieve this,
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe it must run as <code>root</code>. Since the HTTP daemon normally doesn't
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe run as <code>root</code>, the <code>suexec</code> executable needs the
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe setuid bit set and must be owned by <code>root</code>. It should never be
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe writable for any other person than <code>root</code>.</p>
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe <p>For further information about the concepts and and the security model
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe of suexec please refer to the suexec documentation (<a href="http://httpd.apache.org/docs-2.1/suexec.html">http://httpd.apache.org/docs-2.1/suexec.html</a>).</p>
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<div id="quickview"><ul id="toc"><li><img alt="" src="/images/down.gif" /> <a href="#synopsis">Synopsis</a></li>
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<li><img alt="" src="/images/down.gif" /> <a href="#options">Options</a></li>
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14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe <p><code><strong>suexec</strong> -<strong>V</strong></code></p>
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14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<dd>If you are <code>root</code>, this option displays the compile options of
14d5b1a7866541c4eb974f2d213d2aea59743c95wrowe<code>suexec</code>. For security reasons all configuration options are
37ad54b8fd2611b7a4f2b269eec3d27ed784a25dwrowechangeable only at compile time.</dd>
94b262d3639149df0b02642a9daa6db8bff58577wrowe<p><span>Available Languages: </span><a href="/en/programs/suexec.html" title="English"> en </a></p>
94b262d3639149df0b02642a9daa6db8bff58577wrowe<p class="apache">Maintained by the <a href="http://httpd.apache.org/docs-project/">Apache HTTP Server Documentation Project</a></p>
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