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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
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+
+ 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>Chgrp Task</title>
+</head>
+
+<body>
+
+<h2><a name="Chgrp">Chgrp</a></h2>
+<p><em>Since Apache Ant 1.6.</em></p>
+<h3>Description</h3>
+
+<p>Changes the group of a file or all files inside specified
+directories. Right now it has effect only under Unix. The group
+attribute is equivalent to the corresponding argument for the chgrp
+command.</p>
+
+<p><a href="../Types/fileset.html">FileSet</a>s,
+<a href="../Types/dirset.html">DirSet</a>s or <a
+href="../Types/filelist.html">FileList</a>s can be specified using
+nested <code>&lt;fileset&gt;</code>, <code>&lt;dirset&gt;</code> and
+<code>&lt;filelist&gt;</code> elements.</p>
+
+<p>Starting with Ant 1.7, this task supports arbitrary <a
+href="../Types/resources.html#collection">Resource Collection</a>s
+as nested elements.</p>
+
+<p>By default this task will use a single invocation of the underlying
+chgrp command. If you are working on a large number of files this may
+result in a command line that is too long for your operating system.
+If you encounter such problems, you should set the maxparallel
+attribute of this task to a non-zero value. The number to use highly
+depends on the length of your file names (the depth of your directory
+tree) and your operating system, so you'll have to experiment a
+little. POSIX recommends command line length limits of at least 4096
+characters, this may give you an approximation for the number you
+could use as initial value for these experiments.</p>
+
+<p>By default this task won't do anything unless it detects it is
+ running on a Unix system. If you know for sure that you have a
+ "chgrp" executable on your PATH that is command line compatible with
+ the Unix command, you can use the task's os attribute and set its
+ value to your current os.</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 file or directory of which the group must be
+ changed.</td>
+ <td valign="top" valign="middle">Yes, unless nested
+ <code>&lt;fileset|filelist|dirset&gt;</code>
+ elements are specified</td>
+ </tr>
+ <tr>
+ <td valign="top">group</td>
+ <td valign="top">the new group.</td>
+ <td valign="top" align="center">Yes</td>
+ </tr>
+ <tr>
+ <td valign="top">parallel</td>
+ <td valign="top">process all specified files using a single
+ <code>chgrp</code> command. Defaults to true.</td>
+ <td valign="top" align="center">No</td>
+ </tr>
+ <tr>
+ <td valign="top">type</td>
+ <td valign="top">One of <i>file</i>, <i>dir</i> or
+ <i>both</i>. If set to <i>file</i>, only the group of
+ plain files are going to be changed. If set to <i>dir</i>, only
+ the directories are considered.<br>
+ <strong>Note:</strong> The type attribute does not apply to
+ nested <i>dirset</i>s - <i>dirset</i>s always implicitly
+ assume type to be <i>dir</i>.</td>
+ <td align="center" valign="top">No, default is <i>file</i></td>
+ </tr>
+ <tr>
+ <td valign="top">maxparallel</td>
+ <td valign="top">Limit the amount of parallelism by passing at
+ most this many sourcefiles at once. Set it to &lt;= 0 for
+ unlimited. Defaults to unlimited.</td>
+ <td align="center" valign="top">No</td>
+
+ </tr>
+ <tr>
+ <td valign="top">verbose</td>
+ <td valign="top">Whether to print a summary after execution or not.
+ Defaults to <code>false</code>.</td>
+ <td align="center" valign="top">No</td>
+ </tr>
+ <tr>
+ <td valign="top">os</td>
+ <td valign="top">list of Operating Systems on which the command may be
+ executed.</td>
+ <td align="center" valign="top">No</td>
+ </tr>
+ <tr>
+ <td valign="top">osfamily</td>
+ <td valign="top">OS family as used in
+ the <a href="../Tasks/conditions.html#os">&lt;os&gt;</a>
+ condition.</td>
+ <td align="center" valign="top">No - defaults to "unix"</td>
+ </tr>
+
+</table>
+<h3>Examples</h3>
+ <blockquote><pre>
+&lt;chgrp file=&quot;${dist}/start.sh&quot; group=&quot;coders&quot;/&gt;
+</pre>
+</blockquote>
+<p>makes the &quot;start.sh&quot; file belong to the coders group on a
+UNIX system.</p>
+<blockquote>
+<pre>
+&lt;chgrp group=&quot;coders&quot;&gt;
+ &lt;fileset dir=&quot;${dist}/bin&quot; includes=&quot;**/*.sh&quot;/&gt;
+&lt;/chgrp&gt;
+</pre>
+</blockquote>
+<p>makes all &quot;.sh&quot; files below <code>${dist}/bin</code>
+belong to the coders group on a UNIX system.</p>
+<blockquote>
+<pre>
+&lt;chgrp group=&quot;coders&quot;&gt;
+ &lt;fileset dir=&quot;shared/sources1&quot;&gt;
+ &lt;exclude name=&quot;**/trial/**&quot;/&gt;
+ &lt;/fileset&gt;
+ &lt;fileset refid=&quot;other.shared.sources&quot;/&gt;
+&lt;/chgrp&gt;
+</pre>
+</blockquote>
+<p>makes all files below <code>shared/sources1</code> (except those
+below any directory named trial) belong to the coders group on a UNIX
+system. In addition all files belonging to a FileSet
+with <code>id</code> <code>other.shared.sources</code> get the same
+group.</p>
+
+<blockquote>
+<pre>
+&lt;chgrp group=&quot;webdev&quot; type=&quot;file&quot;&gt;
+ &lt;fileset dir=&quot;/web&quot;&gt;
+ &lt;include name=&quot;**/*.test.jsp&quot;/&gt;
+ &lt;include name=&quot;**/*.new&quot;/&gt;
+ &lt;/fileset&gt;
+ &lt;dirset dir=&quot;/web&quot;&gt;
+ &lt;include name=&quot;**/test_*&quot;/&gt;
+ &lt;/dirset&gt;
+&lt;/chmod&gt;
+</pre>
+</blockquote>
+
+<p>makes all <code>.test.jsp</code>, and <code>.new</code> files belong to
+group webdev. Directories beginning with <code>test_</code> also will belong
+to webdev, but if there is a directory that ends in <code>.new</code> or a file
+that begins with <code>test_</code> it will be unaffected.</p>
+
+
+
+
+</body>
+</html>
+