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b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<body id="manual-page" class="no-sidebar"><div id="page-header">
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="/faq/">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<div class="up"><a href="../"><img title="<-" alt="<-" src="/images/left.gif" /></a></div>
4b5981e276e93df97c34e4da05ca5cf8bbd937dand<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></div><div id="page-content"><div id="preamble"><h1>How-To / Tutorials</h1></div>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<h2><a name="howto" id="howto">How-To / Tutorials</a></h2>
a8703cfb67133446eef7af1043640e71486e9ecand <p>Authentication is any process by which you verify that
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd someone is who they claim they are. Authorization is any
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd process by which someone is allowed to be where they want to
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd go, or to have information that they want to have.</p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>See: <a href="auth.html">Authentication, Authorization, and Access Control</a></p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>The CGI (Common Gateway Interface) defines a way for a web
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd server to interact with external content-generating programs,
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd which are often referred to as CGI programs or CGI scripts. It
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd is the simplest, and most common, way to put dynamic content on
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd your web site. This document will be an introduction to setting
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd up CGI on your Apache web server, and getting started writing
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd CGI programs.</p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p><code>.htaccess</code> files provide a way to make configuration
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd changes on a per-directory basis. A file, containing one or more
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd configuration directives, is placed in a particular document directory,
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd and the directives apply to that directory, and all subdirectories thereof.</p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>See: <a href="htaccess.html"><code>.htaccess</code> files</a></p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>SSI (Server Side Includes) are directives that are placed in
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd HTML pages, and evaluated on the server while the pages are
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd being served. They let you add dynamically generated content to
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd an existing HTML page, without having to serve the entire page
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd via a CGI program, or other dynamic technology.</p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>See: <a href="ssi.html">Server Side Includes (SSI)</a></p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>On systems with multiple users, each user can be permitted to have a
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd web site in their home directory using the <code class="directive"><a href="/mod/mod_userdir.html#userdir">UserDir</a></code> directive. Visitors
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd to a URL <code>http://example.com/~username/</code> will get content
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd out of the home directory of the user "<code>username</code>", out of
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd the subdirectory specified by the <code class="directive"><a href="/mod/mod_userdir.html#userdir">UserDir</a></code> directive.</p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd <p>See: <a href="public_html.html">User web directories (<code>public_html</code>)</a></p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<p class="apache">Maintained by the <a href="http://httpd.apache.org/docs-project/">Apache HTTP Server Documentation Project</a></p>
b05ab3ff5ab54aa22610b13d56eaba6ddfc3db60nd<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="/faq/">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p></div>