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<title>rrdlastupdate</title>
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<ul>
<li><a href="#name">NAME</a></li>
<li><a href="#synopsis">SYNOPSIS</a></li>
<li><a href="#description">DESCRIPTION</a></li>
+ <li><a href="#environment_variables">ENVIRONMENT VARIABLES</a></li>
<li><a href="#author">AUTHOR</a></li>
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<p>
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<h1><a name="synopsis">SYNOPSIS</a></h1>
-<p><strong>rrdtool</strong> <strong>lastupdate</strong> <em>filename</em></p>
+<p><strong>rrdtool</strong> <strong>lastupdate</strong> <em>filename</em>
+[<strong>--daemon</strong> <em>address</em>]</p>
<p>
</p>
<hr />
<p>The <strong>lastupdate</strong> function returns the UNIX timestamp and the
value stored for each datum in the most recent update of an RRD.</p>
<dl>
-<dt><strong><a name="filename" class="item"><em>filename</em></a></strong></dt>
-
+<dt><strong><a name="item_filename"><em>filename</em></a></strong><br />
+</dt>
+<dd>
+The name of the <strong>RRD</strong> that contains the data.
+</dd>
+<p></p>
+<dt><strong><a name="item__2d_2ddaemon_address"><strong>--daemon</strong> <em>address</em></a></strong><br />
+</dt>
+<dd>
+Address of the <a href="././rrdcached.html">the rrdcached manpage</a> daemon. If specified, a <code>flush</code> command is sent
+to the server before reading the RRD files. This allows <strong>rrdtool</strong> to return
+fresh data even if the daemon is configured to cache values for a long time.
+For a list of accepted formats, see the <strong>-l</strong> option in the <a href="././rrdcached.html">the rrdcached manpage</a> manual.
+</dd>
+<dd>
+<pre>
+ rrdtool lastupdate --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd</pre>
+</dd>
+<p></p></dl>
+<p>
+</p>
+<hr />
+<h1><a name="environment_variables">ENVIRONMENT VARIABLES</a></h1>
+<p>The following environment variables may be used to change the behavior of
+<code>rrdtoollastupdate</code>:</p>
+<dl>
+<dt><strong><a name="item_rrdcached_address"><strong>RRDCACHED_ADDRESS</strong></a></strong><br />
+</dt>
<dd>
-<p>The name of the <strong>RRD</strong> that contains the data.</p>
+If this environment variable is set it will have the same effect as specifying
+the <code>--daemon</code> option on the command line. If both are present, the command
+line argument takes precedence.
</dd>
-</dl>
+<p></p></dl>
<p>
</p>
<hr />