You can display a list of the available methods for the alert service by using the -n argument. For example:
em-cmdline-client -l entmgrhost -p 15000 -u Administrator -w STC -s AlertService51x -n Note: the order of the parameters is important. Available methods and parameters: -m deleteAlerts -Pfilter=<filter> -m getAllAlerts -m observeAlerts -Pfilter=<filter> -m resolveAlerts -Pfilter=<filter> -m resolveAllAlerts -m deleteAllAlerts -m observeAllAlerts -m getAlertQueryFields -m getAlerts -Pfilter=<filter> -m resetAlerts -Pfilter=<filter> -m resetAllAlerts |