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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 port 1885 and print published messages verbosely:

mosquitto_sub -v -h "" -p 1885 -t {{\$SYS/#}}

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

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