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mosquitto_sub

A simple MQTT version 3.1.1 client that will subscribe to topics and print the messages that it receives.

More information.

• Subscribe to the topic `sensors/temperature` information with Quality of Service (`QoS`) set to 1. (The default hostname is `localhost` and port 1883):

mosquitto_sub -t {sensors/temperature} -q {1}

• Subscribe to all broker status messages publishing on `iot.eclipse.org` port 1885 and print published messages verbosely:

mosquitto_sub -v -h "iot.eclipse.org" -p 1885 -t {\$SYS/#}

• Subscribe to multiple topics matching a given pattern. (+ takes any metric name):

mosquitto_sub -t {sensors/machines/+/temperature/+}

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