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mosquitto_pub:tldr:f34db
mosquitto_pub: Send the contents of a file (`data.txt`) as a message and publish it to `sensors/temperature` topic.
$ mosquitto_pub -t ${sensors-temperature} -f ${data-txt}
try on your machine
The command you provided is a mosquitto_pub
command, used to publish a message to a MQTT (Message Queuing Telemetry Transport) broker.
Here is an explanation of each part of the command:
mosquitto_pub
: Mosquitto is an open-source MQTT broker that facilitates communication between devices.mosquitto_pub
is a command-line utility that allows publishing messages to an MQTT broker.-t ${sensors-temperature}
:-t
specifies the topic to which the message will be published. The${sensors-temperature}
is a placeholder that suggests a variable should be used to define the topic.-f ${data-txt}
:-f
is used to specify the file from which the message payload will be read. In this case,${data-txt}
suggests a variable that holds the path to a file with the message payload.
To use this command, you need to replace ${sensors-temperature}
with the desired topic, and ${data-txt}
with the path to the file containing the message payload. For example, you could run the command like this:
mosquitto_pub -t weather/temperature -f /path/to/data.txt
This would publish the contents of the data.txt
file to the weather/temperature
topic on an MQTT broker.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.