wangwei
/
antliscence
forked from youys/ant

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<title>Apache Ant User Manual</title>
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<h2><a name="unpack">GUnzip/BUnzip2</a></h2>
<h3>Description</h3>
<p>Expands a file packed using GZip or BZip2.</p>

<p>If <i>dest</i> is a directory the name of the destination file is
the same as <i>src</i> (with the &quot;.gz&quot; or &quot;.bz2&quot;
extension removed if present). If <i>dest</i> is omitted, the parent
dir of <i>src</i> is taken. The file is only expanded if the source
file is newer than the destination file, or when the destination file
does not exist.</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">src</td>
    <td valign="top">the file to expand.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">the destination file or directory.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<h3>Examples</h3>
<blockquote>
  <p><code>&lt;gunzip src=&quot;test.tar.gz&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.gz</i> to <i>test.tar</i></p>
<blockquote>
  <p><code>&lt;bunzip2 src=&quot;test.tar.bz2&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.bz2</i> to <i>test.tar</i></p>
<blockquote>
  <p><code>&lt;gunzip src=&quot;test.tar.gz&quot; dest=&quot;test2.tar&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.gz</i> to <i>test2.tar</i></p>
<blockquote>
  <p><code>&lt;gunzip src=&quot;test.tar.gz&quot; dest=&quot;subdir&quot;/&gt;</code></p>
</blockquote>
<p>expands <i>test.tar.gz</i> to <i>subdir/test.tar</i> (assuming
subdir is a directory).</p>

<hr>
<p align="center">Copyright &copy; 2001 Apache Software Foundation. All rights
Reserved.</p>

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