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-<html>
-  <head>
-    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
-    <meta http-equiv="Content-Language" content="en" />
-    <title>s6-linux-utils: the s6-hiercopy program</title>
-    <meta name="Description" content="s6-linux-utils: the s6-hiercopy program" />
-    <meta name="Keywords" content="s6 linux administration root utilities hiercopy cp -a" />
-    <!-- <link rel="stylesheet" type="text/css" href="http://skarnet.org/default.css" /> -->
-  </head>
-<body>
-
-<p>
-<a href="index.html">s6-linux-utils</a><br />
-<a href="http://skarnet.org/software/">Software</a><br />
-<a href="http://skarnet.org/">skarnet.org</a>
-</p>
-
-<h1> The <tt>s6-hiercopy</tt> program </h1>
-
-<p>
-<tt>s6-hiercopy</tt> copies a directory structure recursively.
-</p>
-
-<h2> Interface </h2>
-
-<pre>
-     s6-hiercopy <em>source</em> <em>destination</em>
-</pre>
-
-<ul>
- <li> <tt>s6-hiercopy</tt> recursively copies <em>source</em> to
-<em>destination</em>, which is created if it doesn't exist.
-The permissions are preserved. The owner and group are preserved
-if the user is the superuser. </li>
- <li> It exits 0 on success and 111 on temporary failure. </li>
-</ul>
-
-<h2> Notes </h2>
-
-<p>
- Copying files and browsing through directories is one of Unix's
-weakest points, and <tt>s6-hiercopy</tt> is not meant to work around
-the problem; it's only a quick hack that I needed to boot my embedded
-platform. I originally planned to write the ultimate <tt>cp</tt> utility,
-portable and reliable and featureful and everything - while needing
-approximately a hundred times less resources than GNU <tt>cp</tt> does,
-of course. But I eventually dropped the idea: it's just impossible to
-design, much less write, such a utility.
-</p>
-
-<ul>
- <li> You can't make it portable because there's no universal standard.
-There is no portable way of creating device special files, for instance.
-So <tt>s6-hiercopy</tt> appears here instead of in
-<a href="http://skarnet.org/software/s6-portable-utils/">s6-portable-utils</a>:
-the platform where I needed that kind of tool is Linux. </li>
- <li> You can't make it reliable because Unix's set of filesystem
-management primitives is just too weak. It lacks a lot of atomic
-operations, and filesystem transactions. As a result, <tt>s6-hiercopy</tt>
-is a walking race condition and should <strong>absolutely not</strong>
-be considered instant when used in a multitasking environment.
-But then, <tt>cp -a</tt> shouldn't either. </li>
-</ul>
-
-</body>
-</html>