As you can see, this is fairly straight forward.

The example uses a command file check_multi.cmd and the following output options:

• 1 - list of services for each severity level
• 2 - HTML output
• 4 - STDERR output
• 8 - performance data

Note: you can provide the sum of the report options as a '+' separated number string

Service definition

define service { 
   name                 multi-service
   use                  generic-service
   check_command        check_multi!-f /usr/local/nagios/etc/check_multi.cmd -r 1+2+4+8
   service_description  check_multi_test
   host_name            localhost 
}

Command definition

define command {
  command_name         check_multi
  command_line         $USER1$/check_multi $ARG1$ $ARG2$ $ARG3$ $ARG4$
}