This is short list of all Nagios external commands. This file is
included only for reference. Athoritative list of commands is
available from Nagios documentation site:
http://www.nagios.org/developerinfo/externalcommands

ACKNOWLEDGE_HOST_PROBLEM: host_name sticky notify persistent author comment
ACKNOWLEDGE_SVC_PROBLEM: host_name service_description sticky notify persistent author comment
ADD_HOST_COMMENT: host_name persistent author comment
ADD_SVC_COMMENT: host_name service_description persistent author comment
CHANGE_CONTACT_HOST_NOTIFICATION_TIMEPERIOD: contact_name notification_timeperiod
CHANGE_CONTACT_MODATTR: contact_name value
CHANGE_CONTACT_MODHATTR: contact_name value
CHANGE_CONTACT_MODSATTR: contact_name value
CHANGE_CONTACT_SVC_NOTIFICATION_TIMEPERIOD: contact_name notification_timeperiod
CHANGE_CUSTOM_CONTACT_VAR: contact_name varname varvalue
CHANGE_CUSTOM_HOST_VAR: host_name varname varvalue
CHANGE_CUSTOM_SVC_VAR: host_name service_description varname varvalue
CHANGE_GLOBAL_HOST_EVENT_HANDLER: event_handler_command
CHANGE_GLOBAL_SVC_EVENT_HANDLER: event_handler_command
CHANGE_HOST_CHECK_COMMAND: host_name check_command
CHANGE_HOST_CHECK_TIMEPERIOD: host_name check_timeperod
CHANGE_HOST_CHECK_TIMEPERIOD: host_name timeperiod
CHANGE_HOST_EVENT_HANDLER: host_name event_handler_command
CHANGE_HOST_MODATTR: host_name value
CHANGE_MAX_HOST_CHECK_ATTEMPTS: host_name check_attempts
CHANGE_MAX_SVC_CHECK_ATTEMPTS: host_name service_description check_attempts
CHANGE_NORMAL_HOST_CHECK_INTERVAL: host_name check_interval
CHANGE_NORMAL_SVC_CHECK_INTERVAL: host_name service_description check_interval
CHANGE_RETRY_HOST_CHECK_INTERVAL: host_name service_description check_interval
CHANGE_RETRY_SVC_CHECK_INTERVAL: host_name service_description check_interval
CHANGE_SVC_CHECK_COMMAND: host_name service_description check_command
CHANGE_SVC_CHECK_TIMEPERIOD: host_name service_description check_timeperiod
CHANGE_SVC_EVENT_HANDLER: host_name service_description event_handler_command
CHANGE_SVC_MODATTR: host_name service_description value
CHANGE_SVC_NOTIFICATION_TIMEPERIOD: host_name service_description notification_timeperiod
DELAY_HOST_NOTIFICATION: host_name notification_time
DELAY_SVC_NOTIFICATION: host_name service_description notification_time
DEL_ALL_HOST_COMMENTS: host_name
DEL_ALL_SVC_COMMENTS: host_name service_description
DEL_HOST_COMMENT: comment_id
DEL_HOST_DOWNTIME: downtime_id
DEL_SVC_COMMENT: comment_id
DEL_SVC_DOWNTIME: downtime_id
DISABLE_ALL_NOTIFICATIONS_BEYOND_HOST: host_name
DISABLE_CONTACTGROUP_HOST_NOTIFICATIONS: contactgroup_name
DISABLE_CONTACTGROUP_SVC_NOTIFICATIONS: contactgroup_name
DISABLE_CONTACT_HOST_NOTIFICATIONS: contact_name
DISABLE_CONTACT_SVC_NOTIFICATIONS: contact_name
DISABLE_EVENT_HANDLERS:
DISABLE_FAILURE_PREDICTION:
DISABLE_FLAP_DETECTION:
DISABLE_HOSTGROUP_HOST_CHECKS: hostgroup_name
DISABLE_HOSTGROUP_HOST_NOTIFICATIONS: hostgroup_name
DISABLE_HOSTGROUP_PASSIVE_HOST_CHECKS: hostgroup_name
DISABLE_HOSTGROUP_PASSIVE_SVC_CHECKS: hostgroup_name
DISABLE_HOSTGROUP_SVC_CHECKS: hostgroup_name
DISABLE_HOSTGROUP_SVC_NOTIFICATIONS: hostgroup_name
DISABLE_HOST_AND_CHILD_NOTIFICATIONS: host_name
DISABLE_HOST_CHECK: host_name
DISABLE_HOST_EVENT_HANDLER: host_name
DISABLE_HOST_FLAP_DETECTION: host_name
DISABLE_HOST_FRESHNESS_CHECKS:
DISABLE_HOST_NOTIFICATIONS: host_name
DISABLE_HOST_SVC_CHECKS: host_name
DISABLE_HOST_SVC_NOTIFICATIONS: host_name
DISABLE_NOTIFICATIONS:
DISABLE_PASSIVE_HOST_CHECKS: host_name
DISABLE_PASSIVE_SVC_CHECKS: host_name service_description
DISABLE_PERFORMANCE_DATA:
DISABLE_SERVICEGROUP_HOST_CHECKS: servicegroup_name
DISABLE_SERVICEGROUP_HOST_NOTIFICATIONS: servicegroup_name
DISABLE_SERVICEGROUP_PASSIVE_HOST_CHECKS: servicegroup_name
DISABLE_SERVICEGROUP_PASSIVE_SVC_CHECKS: servicegroup_name
DISABLE_SERVICEGROUP_SVC_CHECKS: servicegroup_name
DISABLE_SERVICEGROUP_SVC_NOTIFICATIONS: servicegroup_name
DISABLE_SERVICE_FLAP_DETECTION: host_name service_description
DISABLE_SERVICE_FRESHNESS_CHECKS:
DISABLE_SVC_CHECK: host_name service_description
DISABLE_SVC_EVENT_HANDLER: host_name service_description
DISABLE_SVC_FLAP_DETECTION: host_name service_description
DISABLE_SVC_NOTIFICATIONS: host_name service_description
ENABLE_ALL_NOTIFICATIONS_BEYOND_HOST: host_name
ENABLE_CONTACTGROUP_HOST_NOTIFICATIONS: contactgroup_name
ENABLE_CONTACTGROUP_SVC_NOTIFICATIONS: contactgroup_name
ENABLE_CONTACT_HOST_NOTIFICATIONS: contact_name
ENABLE_CONTACT_SVC_NOTIFICATIONS: contact_name
ENABLE_EVENT_HANDLERS:
ENABLE_FAILURE_PREDICTION:
ENABLE_FLAP_DETECTION:
ENABLE_HOSTGROUP_HOST_CHECKS: hostgroup_name
ENABLE_HOSTGROUP_HOST_NOTIFICATIONS: hostgroup_name
ENABLE_HOSTGROUP_PASSIVE_HOST_CHECKS: hostgroup_name
ENABLE_HOSTGROUP_PASSIVE_SVC_CHECKS: hostgroup_name
ENABLE_HOSTGROUP_SVC_CHECKS: hostgroup_name
ENABLE_HOSTGROUP_SVC_NOTIFICATIONS: hostgroup_name
ENABLE_HOST_AND_CHILD_NOTIFICATIONS: host_name
ENABLE_HOST_CHECK: host_name
ENABLE_HOST_EVENT_HANDLER: host_name
ENABLE_HOST_FLAP_DETECTION: host_name
ENABLE_HOST_FRESHNESS_CHECKS:
ENABLE_HOST_NOTIFICATIONS: host_name
ENABLE_HOST_SVC_CHECKS: host_name
ENABLE_HOST_SVC_NOTIFICATIONS: host_name
ENABLE_NOTIFICATIONS:
ENABLE_PASSIVE_HOST_CHECKS: host_name
ENABLE_PASSIVE_SVC_CHECKS: host_name service_description
ENABLE_PERFORMANCE_DATA:
ENABLE_SERVICEGROUP_HOST_CHECKS: servicegroup_name
ENABLE_SERVICEGROUP_HOST_NOTIFICATIONS: servicegroup_name
ENABLE_SERVICEGROUP_PASSIVE_HOST_CHECKS: servicegroup_name
ENABLE_SERVICEGROUP_PASSIVE_SVC_CHECKS: servicegroup_name
ENABLE_SERVICEGROUP_SVC_CHECKS: servicegroup_name
ENABLE_SERVICEGROUP_SVC_NOTIFICATIONS: servicegroup_name
ENABLE_SERVICE_FRESHNESS_CHECKS:
ENABLE_SVC_CHECK: host_name service_description
ENABLE_SVC_EVENT_HANDLER: host_name service_description
ENABLE_SVC_FLAP_DETECTION: host_name service_description
ENABLE_SVC_NOTIFICATIONS: host_name service_description
PROCESS_FILE: file_name delete
PROCESS_HOST_CHECK_RESULT: host_name status_code plugin_output
PROCESS_SERVICE_CHECK_RESULT: host_name service_description return_code plugin_output
READ_STATE_INFORMATION:
REMOVE_HOST_ACKNOWLEDGEMENT: host_name
REMOVE_SVC_ACKNOWLEDGEMENT: host_name service_description
RESTART_PROGRAM:
SAVE_STATE_INFORMATION:
SCHEDULE_AND_PROPAGATE_HOST_DOWNTIME: host_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_AND_PROPAGATE_TRIGGERED_HOST_DOWNTIME: host_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_FORCED_HOST_CHECK: host_name check_time
SCHEDULE_FORCED_HOST_SVC_CHECKS: host_name check_time
SCHEDULE_FORCED_SVC_CHECK: host_name service_description check_time
SCHEDULE_HOSTGROUP_HOST_DOWNTIME: hostgroup_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_HOSTGROUP_SVC_DOWNTIME: hostgroup_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_HOST_CHECK: host_name check_time
SCHEDULE_HOST_DOWNTIME: host_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_HOST_SVC_CHECKS: host_name check_time
SCHEDULE_HOST_SVC_DOWNTIME: host_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_SERVICEGROUP_HOST_DOWNTIME: servicegroup_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_SERVICEGROUP_SVC_DOWNTIME: servicegroup_name start_time end_time fixed trigger_id duration author comment
SCHEDULE_SVC_CHECK: host_name service_description check_time
SCHEDULE_SVC_DOWNTIME: host_name service_desription><start_time end_time fixed trigger_id duration author comment
SEND_CUSTOM_HOST_NOTIFICATION: host_name options author comment
SEND_CUSTOM_SVC_NOTIFICATION: host_name service_description options author comment
SET_HOST_NOTIFICATION_NUMBER: host_name notification_number
SET_SVC_NOTIFICATION_NUMBER: host_name service_description notification_number
SHUTDOWN_PROGRAM:
START_ACCEPTING_PASSIVE_HOST_CHECKS:
START_ACCEPTING_PASSIVE_SVC_CHECKS:
START_EXECUTING_HOST_CHECKS:
START_EXECUTING_SVC_CHECKS:
START_OBSESSING_OVER_HOST: host_name
START_OBSESSING_OVER_HOST_CHECKS:
START_OBSESSING_OVER_SVC: host_name service_description
START_OBSESSING_OVER_SVC_CHECKS:
STOP_ACCEPTING_PASSIVE_HOST_CHECKS:
STOP_ACCEPTING_PASSIVE_SVC_CHECKS:
STOP_EXECUTING_HOST_CHECKS:
STOP_EXECUTING_SVC_CHECKS:
STOP_OBSESSING_OVER_HOST: host_name
STOP_OBSESSING_OVER_HOST_CHECKS:
STOP_OBSESSING_OVER_SVC: host_name service_description
STOP_OBSESSING_OVER_SVC_CHECKS: