Subscribe

The subscribe with a context subscribes the currently active context client to the given topics. By default it doesn’t block the console like the Subscribe without a context does. To enable this behavior you can use the -s option.

Synopsis

client@host> sub    -t <topics> [-t <topics>]... 
                    [-q <qos>]... 
                    [-oc] 
                    [-of <receivedMessagesFile>]
                    [-b64]
                    [-J]
                    [-T] 
                    [-up <userProperties>]... 
                    [-s]   
                    [-h]                                           

Options

Option	Long Version	Explanation	Default
`-t`	`--topic`	The MQTT topic the client will subscribe to.
`-q`	`--qos`	Use a defined quality of service level on all topics if only one QoS is specified. You can define a specific QoS level for every topic. The corresponding QoS levels will be matched in order to the given topics.	`0`
`-oc`	`--outputToConsole`	If this flag is set the output will be printed to the console.	`False`
`-of`	`--outputToFile`	If a file is given print the received publishes to the specified output file. If the file is not present it will be created.
`-b64`	`--base64`	If set the received publish messages will be base64 encoded.	`False`
`-J`	`--jsonOutput`	Print the received publishes in pretty JSON format.	`False`
`-T`	`--showTopics`	Prepend the specific topic name to the received publish.	`False`
`-up`	`--userProperty`	A user property of the subscribe message.
`-s`		The subscribe emulates the same behavior as the subscribe command in non-shell mode. Note: the subscriptions will be unsubscribed afterwards. To cancel the command simply press Enter.

Examples

Subscribe to test topic on default settings (output will be written to Logfile. See Logging):

mqtt> con -i myClient
myClient@localhost> sub -t test