[rrd-users] How to supress image dimensions

[Cliff]

Hi Folks

Everytime I run my shell script to draw
the graphs, root gets an email whose
contents are the dimensions of the graph.
As in:
695x272 (in the body of the email).

How can I supress this?
How does one pipe the output of rrdgraph
to the null device?

Thank you.

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