rlm_exec documentation

[Patric <patrict@bluebottle.com>]

Hi guys,

Im busy trying to figure out how to implement rlm_exec, and am really 
battling to find documentation to this end.
Can anybody point me in the right direction, I dont mind doing the 
legwork myself, but Im getting nowhere fast...

I am using freeradius 1.1.3

Thanks a stack!
Patric