retain (true|false): Set retain flag for subsequent pubs.
pub TOPIC MSG: Publish MSG to the given TOPIC.
sleep DURATION: Sleep for the given duration (e.g, '1s').
By default (controlled by -sh), input lines are shell-expanded: Each
substring of the form <<SHELL_COMMAND>> is replaced by the stdout
of executing SHELL_COMMAND.
Package main is a little command-line MQTT client.
Commands:
qos QOS Set the QoS for subsequent operations.
sub TOPIC Subscribe to the given topic.
unsub TOPIC Unsubscribe from the given topic.
retain (true|false) Set retain flag for subsequent pubs.
pub TOPIC MSG Publish MSG to the given TOPIC.
sleep DURATION Sleep for DURATION (Go syntax).