Megatest

                 (begin
                   (if (not (is-port-in-use portnum))  
                       (let* ((rep       (start-nn-server portnum))
                           (mtconfdat (simple-setup (args:get-arg "-start-dir")))
                           (mtconf    (car mtconfdat))
                           (script    (configf:lookup mtconf "listener" "script")))
                           (print "Listening on port " portnum " for messages")
														(set-signal-handler! signal/int  special-signal-handler)
														(set-signal-handler! signal/term special-signal-handler)

                            (let loop ((instr (nn-recv rep)))
                               (print "received " instr ", running \"" script " " instr "\"")
                               (system (conc script " '" instr "'"))
                               (nn-send rep "ok")
                               (loop (nn-recv rep))))
                     (print "ERROR: Port " portnum " already in use. Try another port")))))))
      
      )) ;; the end