Hi Don…
as far as I understood the attributes:
attrributes has to be applied after -a Switch
attributes has to be seperated by space chars
every attribute must be surrounded by ” chars
so for your example try:
./check_nrpe -H x.x.x.x -p 5666 -c CheckCounter -a “Counter=\\Processor Information(_Total)\\% Processor Time” "ShowAll" "MaxWarn=80" "MaxCrit=90"