MQTT (Messaging Protocol)

Question 1

What command is used to publish a message to a topic?

Answer 1

mosquitto_pub -h <broker_ip> -t "topic" -m "message"</broker_ip>

Question 2

What command is used to subscribe to a topic?

Answer 2

mosquitto_sub -h <broker_ip> -t "topic"</broker_ip>

Question 3

What command is used to install MQTT brocker & client?

Answer 3

sudo apt install mosquitto mosquitto-clients