rrdtool last --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
+=item B<--noflush>
+
+If the L<rrdcached> daemon is being used, then omit the flush normally
+send before returning the last update. If you add this option, you get the
+last time the file on disk was updated; if you have relatively low cache times
+and are calling this frequently it will preserve the caching benefit
+
=back
=head1 ENVIRONMENT VARIABLES
=head1 AUTHOR
Russ Wright <rwwright@home.com>
-
+Daemon support added by Steve Shipway <steve@steveshipway.org>