adding a custom test in linux client

Oliver Wrote

Does dia.sh read /tmp/dia.txt and send the data to the xymon server?
If so, you should have a 'dia' column on the xymon server for the client in question 

Hi Oliver, thanks for answering,

That's the point: I don't know how to tell the script (dia.sh) to send data to the Xymon server, in fact no 'dia' column appears :-\

Alessandro