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+<!--
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You under the Apache License, Version 2.0
+ (the "License"); you may not use this file except in compliance with
+ the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
+<title>Truncate Task</title>
+</head>
+
+<body>
+
+<h2><a name="touch">Truncate</a></h2>
+<h3>Description</h3>
+
+<p>Set the length of one or more files, as the intermittently available
+<code>truncate</code> Unix utility/function. In addition to working with
+a single file, this Task can also work on
+<a href="../Types/resources.html">resources</a> and resource collections.
+<strong>Since Apache Ant 1.7.1</strong>.
+</p>
+
+<h3>Parameters</h3>
+<table border="1" cellpadding="2" cellspacing="0">
+ <tr>
+ <td valign="top"><b>Attribute</b></td>
+ <td valign="top"><b>Description</b></td>
+ <td align="center" valign="top"><b>Required</b></td>
+ </tr>
+ <tr>
+ <td valign="top">file</td>
+ <td valign="top">The name of the file.</td>
+ <td valign="top" align="center">Unless a nested resource collection element
+ has been specified.</td>
+ </tr>
+ <tr>
+ <td valign="top">length</td>
+ <td valign="top">Specifies the new file length (in bytes) to set.
+ The following suffixes are supported:
+ <ul>
+ <li>K : Kilobytes (1024 bytes)</li>
+ <li>M : Megabytes (1024 K)</li>
+ <li>G : Gigabytes (1024 M)</li>
+ <li>T : Terabytes (1024 G)</li>
+ <li>P : Petabytes (1024 T)</li>
+ </ul>
+ </td>
+ <td valign="center" align="center" rowspan="2">At most one of these.
+ Omitting both implies <code>length="0"</code>.
+ </td>
+ </tr>
+ <tr>
+ <td valign="top">adjust</td>
+ <td valign="top">Specifies the number of bytes
+ (and positive/negative direction)
+ by which to adjust file lengths. The same suffixes are supported
+ for this attribute as for the <code>length</code> attribute.
+ </td>
+ </tr>
+ <tr>
+ <td valign="top">create</td>
+ <td valign="top">Whether to create nonexistent files.</td>
+ <td valign="top" align="center">No, default <i>true</i>.</td>
+ </tr>
+ <tr>
+ <td valign="top">mkdirs</td>
+ <td valign="top">Whether to create nonexistent parent
+ directories when creating new files.</td>
+ <td valign="top" align="center">No, default <i>false</i>.</td>
+ </tr>
+</table>
+<h3>Parameters specified as nested elements</h3>
+<h4>any resource collection</h4>
+
+<p>You can use any number of nested resource collection elements to
+define the resources for this task and refer to resources defined
+elsewhere. <b>Note:</b> resources passed to this task are expected
+to be filesystem-based.</p>
+
+<h3>Examples</h3>
+
+<pre> &lt;truncate file="foo" /&gt;</pre>
+<p>Sets the length of file <code>foo</code> to zero.</p>
+
+<pre> &lt;truncate file="foo" length="1K" /&gt;</pre>
+<p>Sets the length of file <code>foo</code> to 1 kilobyte (1024 bytes).</p>
+
+<pre> &lt;truncate file="foo" adjust="1K" /&gt;</pre>
+<p>Adjusts the length of file <code>foo</code> upward by 1 kilobyte.</p>
+
+<pre> &lt;truncate file="foo" adjust="-1M" /&gt;</pre>
+<p>Adjusts the length of file <code>foo</code> downward by 1 megabyte.</p>
+
+</body>
+</html>