Megatest

  -setvars VAR1=val1,VAR2=val2 : Add environment variables to a run NB// these are
                                 overwritten by values set in config files.
  -server -|hostname      : start the server (reduces contention on megatest.db), use
                            - to automatically figure out hostname
  -transport http|rpc     : use http or rpc for transport (default is http) 
  -log logfile            : send stdout and stderr to logfile
  -list-servers           : list the servers 
  -stop-server id         : stop server specified by id (see output of -list-servers), use
                            0 to kill all
  -kill-servers           : kill all servers
  -repl                   : start a repl (useful for extending megatest)
  -load file.scm          : load and run file.scm
  -mark-incompletes       : find and mark incomplete tests
  -ping run-id|host:port  : ping server, exit with 0 if found
  -debug N|N,M,O...       : enable debug 0-N or N and M and O ...
  -config fname           : override the megatest.config file with fname
  -append-config fname    : append fname to the megatest.config file

			":expected"
			":tol"
			":units"
			;; misc
			"-start-dir"
			"-contour"
			"-server"
			"-stop-server"
			"-transport"
			"-kill-server"
			"-port"
			"-extract-ods"
			"-pathmod"
			"-env2file"
			"-envcap"
			"-envdelta"
			"-setvars"

			"-cache-db"
                        "-use-db-cache"
			;; misc
			"-repl"
			"-lock"
			"-unlock"
			"-list-servers"
			"-kill-servers"
                        "-run-wait"      ;; wait on a run to complete (i.e. no RUNNING)
			"-local"         ;; run some commands using local db access
                        "-generate-html"

			;; misc queries
			"-list-disks"
			"-list-targets"

					      (eq? pid-val 0))
					  (begin
					    (printf "Sending signal/term to ~A\n" pid)
					    (process-signal pid signal/term))))))
		       (process:children #f))
		      (original-exit exit-code)))))

;; for some switches alway print the command to stderr
;; for some switches always print the command to stderr
;;
(if (args:any? "-run" "-runall" "-list-runs" "-remove-runs" "-set-state-status")
(if (args:any? "-run" "-runall" "-remove-runs" "-set-state-status")
    (debug:print 0 *default-log-port* (string-intersperse (argv) " ")))

;;======================================================================
;; Misc setup stuff
;;======================================================================

(debug:setup)

(if (args:get-arg "-server")
    (let ((tl        (launch:setup))
          (transport-type (string->symbol (or (args:get-arg "-transport") "http"))))
      (server:launch 0 transport-type)
      (set! *didsomething* #t)))

(if (or (args:get-arg "-list-servers")
	(args:get-arg "-stop-server")
        (args:get-arg "-kill-server"))
        (args:get-arg "-kill-servers"))
    (let ((tl (launch:setup)))
      (if tl 
      (if tl ;; all roads from here exit
	  (let* ((servers (server:get-list *toppath*))
		 (fmtstr  "~5a~12a~8a~20a~24a~10a~10a~10a~10a\n")
		 (fmtstr  "~8a~22a~20a~20a~8a\n"))
		 (servers-to-kill '())
                 (kill-switch  (if (args:get-arg "-kill-server") "-9" ""))
                 (killinfo   (or (args:get-arg "-stop-server") (args:get-arg "-kill-server") ))
		 (khost-port (if killinfo (if (substring-index ":" killinfo)(string-split ":") #f) #f))
		 (sid        (if killinfo (if (substring-index ":" killinfo) #f (string->number killinfo)) #f)))
	    (format #t fmtstr "Id" "MTver" "Pid" "Host" "Interface:OutPort" "InPort" "LastBeat" "State" "Transport")
	    (format #t fmtstr "==" "=====" "===" "====" "=================" "======" "========" "=====" "=========")
	    (for-each 
	    (format #t fmtstr "pid" "Interface:port" "age (hms)" "Last mod" "State")
	    (format #t fmtstr "===" "==============" "=========" "========" "=====")
	    (for-each ;;  ( mod-time host port start-time pid )
	     (lambda (server)
	       (let* ((id         (vector-ref server 0))
		      (pid        (vector-ref server 1))
		      (hostname   (vector-ref server 2))
	       (let* ((mtm (any->number (car server)))
		      (mod (if mtm (- (current-seconds) mtm) "unk"))
		      (age (- (current-seconds)(or (any->number (list-ref server 3)) (current-seconds))))
		      (url (conc (cadr server) ":" (caddr server)))
		      (interface  (vector-ref server 3)) 
		      (pullport   (vector-ref server 4))
		      (pid (list-ref server 4))
		      (pubport    (vector-ref server 5))
		      (start-time (vector-ref server 6))
		      (priority   (vector-ref server 7))
		      (state      (vector-ref server 8))
		      (mt-ver     (vector-ref server 9))
		      (last-update (vector-ref server 10)) 
		      (transport  (vector-ref server 11))
		      (killed     #f)
		      (status     (< last-update 20)))
		      (alv (if (number? mod)(< mod 10) #f)))
		 (format #t
			 fmtstr
		 ;;   (zmq-sockets (if status (server:client-connect hostname port) #f)))
		 ;; no need to login as status of #t indicates we are connecting to correct 
		 ;; server
			 pid
			 url
		;; (if (equal? state "dead")
		;;     (if (> last-update (* 25 60 60)) ;; keep records around for slighly over a day.
		;; 	 (tasks:server-deregister (db:delay-if-busy tdbdat) hostname pullport: pullport pid: pid action: 'delete))
		;;     (if (> last-update 20)        ;; Mark as dead if not updated in last 20 seconds
			 (seconds->hr-min-sec age)
		;; 	 (tasks:server-deregister (db:delay-if-busy tdbdat) hostname pullport: pullport pid: pid)))
		 (format #t fmtstr id mt-ver pid hostname (conc interface ":" pullport) pubport last-update
			 (if status "alive" "dead") transport)
		 (if (or (equal? id sid)
			 (equal? sid 0)) ;; kill all/any
			 (seconds->hr-min-sec mod)
			 (if alv "alive" "dead"))
		 (if (and alv
			  (args:get-arg "-kill-servers"))
		     (begin
		       (debug:print-info 0 *default-log-port* "Attempting to kill "kill-switch" server with pid " pid)
		       (tasks:kill-server hostname pid kill-switch: kill-switch)))))
	     servers)
		       (debug:print-info 0 *default-log-port* "Attempting to kill server with pid " pid)
		       (server:kill server)))))
	     (sort servers (lambda (a b)
			     (let ((ma (or (any->number (car a)) 9e9))
				   (mb (or (any->number (car b)) 9e9)))
			       (> ma mb)))))
	    (debug:print-info 1 *default-log-port* "Done with listservers")
	    (set! *didsomething* #t)
	    (exit)) ;; must do, would have to add checks to many/all calls below
	    (exit))
	  (exit))))
      ;; must do, would have to add checks to many/all calls below

;;======================================================================
;; Weird special calls that need to run *after* the server has started?
;;======================================================================

(if (args:get-arg "-list-targets")
    (if (launch:setup)