Cacti

To figure what is the path to php use 'which'

[marius@gurb marius]$ which php
/usr/bin/php

You can execute php just like any other binary 'php -h' prints out short help. The normal way to execute the binary is 'php -q' which will suppress http headers.

Yes, you can use the rrdtool options start and end (in seconds). Take a peak at the source on your cacti/rrdtool graphs. Lots of documentation on www.rrdtool.org http://people.ee.ethz.ch/~oetiker/webto ... graph.html