CRON parameter*     ==  CRON="crontab-spec"
       crontab-spec ==  minute hour day month dayOfWeek action
                    --  default: none

Cause an action at a time specified in the format of crontab-spec which is compatible with that of standard crontab(5) of cron(8) servers in Unix systems. If the action is prefixed with "/" then it is an external action which will be executed by the system(3) function. If the action is prefixed with "-" then it is a built-in internal action of DeleGate.

-suspend N	-- suspend for N seconds
-restart	-- restart the DeleGate
-exit	-- finish the DeleGate
-expire N	-- execute expiration for $CACHEDIR by "-atime +Nd"
-system command	-- execute command as a shell command
/dir/command args	-- equiv. to "-system /dir/command args"
- args	-- equiv. to "/dir/delegated args"
-Ffunc args	-- equiv. to "/dir/delegated -Ffunc args"

Example:

CRON="0 0 * * * -restart"
CRON="0 3 * * * -expire 3" (this is equivalent to followings)
CRON="0 3 * * * -Fexpire /path/of/cache -rm -atime +3 -sum"
CRON="0 3 * * * /path/of/delegated -Fexpire /path/of/cache -rm -atime +3 -sum"