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+<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
+<title>GZip/BZip2/XZ Tasks</title>
+</head>
+
+<body>
+
+<h2 id="pack">GZip/BZip2/XZ</h2>
+<h3>Description</h3>
+<p>Packs a resource using the GZip, BZip2 or XZ algorithm.  The output file is only generated if it
+doesn't exist or the source resource is newer.</p>
+
+<p>XZ compression support has been added <em>since Apache Ant 1.10.1</em> and depends on external
+libraries not included in the Ant distribution.
+See <a href="../install.html#librarydependencies">Library Dependencies</a> for more information.</p>
+
+<h3>Parameters</h3>
+<table class="attr">
+  <tr>
+    <th scope="col">Attribute</th>
+    <th scope="col">Description</th>
+    <th scope="col">Required</th>
+  </tr>
+  <tr>
+    <td>src</td>
+    <td>the file to gzip/bzip/xz.</td>
+    <td>Yes, or a nested resource collection</td>
+  </tr>
+  <tr>
+    <td>destfile</td>
+    <td>the destination file to create.</td>
+    <td rowspan="2">Exactly one of the two</td>
+  </tr>
+  <tr>
+    <td>zipfile</td>
+    <td class="left"><em><u>deprecated</u></em> old name of <var>destfile</var>.</td>
+  </tr>
+</table>
+<h3>Parameters specified as nested elements</h3>
+<h4>any <a href="../Types/resources.html">resource</a> or single element resource collection</h4>
+<p><em>Since Apache Ant 1.7</em></p>
+<p>The specified resource will be used as <var>src</var>.</p>
+
+<h3>Examples</h3>
+<pre>&lt;gzip src=&quot;test.tar&quot; destfile=&quot;test.tar.gz&quot;/&gt;</pre>
+<pre>&lt;bzip2 src=&quot;test.tar&quot; destfile=&quot;test.tar.bz2&quot;/&gt;</pre>
+<pre>&lt;xz src=&quot;test.tar&quot; destfile=&quot;test.tar.xz&quot;/&gt;</pre>
+
+<p>Download <samp>http://example.org/archive.tar</samp> and compress it
+to <samp>archive.tar.gz</samp> in the project's <var>basedir</var> on the fly.</p>
+<pre>
+&lt;gzip destfile=&quot;archive.tar.gz&quot;&gt;
+  &lt;url url="http://example.org/archive.tar"/&gt;
+&lt;/gzip&gt;</pre>
+
+</body>
+</html>