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<h2 id="attrib">Attrib</h2>
<p><em>Since Apache Ant 1.6</em>.</p>
<h3>Description</h3>

<p>Changes the attributes of a file or all files inside specified directories.  Right now it has
effect only under Windows. Each of the 4 possible permissions has its own attribute, matching the
arguments for the attrib 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><em>Since Ant 1.7</em>, this task supports
arbitrary <a href="../Types/resources.html#collection">resource collections</a> as nested
elements.</p>

<!--p>By default this task will use a single invocation of the underlying
attrib 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), so you'll have to experiment a little.</p-->

<p>By default this task won't do anything unless it detects it is running on a Windows system.  If
you know for sure that you have a <code>attrib</code> executable on your <code>PATH</code> that is
command line compatible with the Windows command, you can use the task's <var>os</var> attribute and
set its value to your current OS.</p>

<p>See the <a href="setpermissions.html">setpermissions</a> task for a platform independent
alternative.</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>file</td>
    <td>the file or directory of which the permissions must be changed.</td>
    <td>Yes, or nested <code>&lt;fileset/list&gt;</code> elements</td>
  </tr>
  <tr>
    <td>readonly</td>
    <td>the readonly permission.</td>
    <td rowspan="4">At least one of the four</td>
  </tr>
  <tr>
    <td>archive</td>
    <td class="left">the archive permission.</td>
  </tr>
  <tr>
    <td>system</td>
    <td class="left">the system permission.</td>
  </tr>
  <tr>
    <td>hidden</td>
    <td class="left">the hidden permission.</td>
  </tr>
  <tr>
    <td>type</td>
    <td>One of <q>file</q>, <q>dir</q> or <q>both</q>. If set to <q>file</q>, only the permissions
      of plain files are going to be changed.  If set to <q>dir</q>, only the directories are
      considered.<br/>
      <strong>Note</strong>: The type attribute does not apply to
      nested <code>dirset</code>s&mdash;<code>dirset</code>s always implicitly assume type to
      be <q>dir</q>.</td>
    <td>No; default is <q>file</q></td>
  </tr>
  <tr>
    <td>verbose</td>
    <td>Whether to print a summary after execution or not.</td>
    <td>No; defaults to <q>false</q></td>
  </tr>
  <!--tr>
    <td>parallel</td>
    <td>process all specified files using a single
      <kbd>chmod</kbd> command.</td>
    <td>No; defaults to <q>true</q></td>
  </tr>
  <tr>
    <td>maxparallel</td>
    <td>Limit the amount of parallelism by passing at
      most this many sourcefiles at once.  Set it to negative integer for
      unlimited.  <em>Since Ant 1.6</em>.</td>
    <td>No, defaults to unlimited</td>
  </tr-->
  <tr>
    <td>os</td>
    <td>list of Operating Systems on which the command may be executed.</td>
    <td>No</td>
  </tr>
  <tr>
    <td>osfamily</td>
    <td>OS family as used in the <a href="../Tasks/conditions.html#os">&lt;os&gt;</a>
      condition.</td>
    <td>No; defaults to <q>windows</q></td>
  </tr>
</table>

<h3>Examples</h3>

<p>Make the <code>run.bat</code> file read-only and hidden.</p>
<pre>&lt;attrib file=&quot;${dist}/run.bat&quot; readonly=&quot;true&quot; hidden=&quot;true&quot;/&gt;</pre>

<p>Make all <samp>.xml</samp> files below <samp>${meta.inf}</samp> readable.</p>
<pre>&lt;attrib readonly=&quot;false&quot;&gt;
  &lt;fileset dir=&quot;${meta.inf}&quot; includes=&quot;**/*.xml&quot;/&gt;
&lt;/attrib&gt;</pre>

<p>Make all files below <samp>shared/sources1</samp> (except those below any directory
named <samp>trial</samp>) read-only and archived. In addition all files belonging to a FileSet
with <var>id</var> <samp>other.shared.sources</samp> get the same attributes.</p>
<pre>
&lt;attrib readonly=&quot;true&quot; archive=&quot;true&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;/attrib&gt;</pre>

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