Cause: Control program usage
message.
Action: None.

Relared Errors:
TNS-01007: quit
| exit : exit LSNRCTL
TNS-01008:
version [<listener_name>] : get the version information of the
listener
TNS-01009:
service [<listener_name>] : get the service information of the
listener
TNS-01013:
set|show trc_{ } [<value>]: set|show trace parameters of current
listener
TNS-01014:
set|show log_{ } [<value>]: set|show log parameters of current
listener
TNS-01015:
set|show parm_name [<value>]: sets|shows current listener parm
values
TNS-01016:
change_password [<listener_name>]: changes the password of the
listener
TNS-01017:
set|show current_listener [<listener_name>]: sets|shows current
listener
TNS-01018:
save_config [<listener_name>]: saves configuration changes to parameter
file
TNS-01019: set
rawmode ON | OFF: set output mode for services and status
commands