--

• mqttcli pub --conf settings.json -t "some/where" -m "your message"
• tail -f /var/log/nginx.log | mqttcli pub -t "some/where" -s

• mqttcli sub -t "some/#"
• mqttcli sub --conf settings.json -t "some/topic"
• mqttcli sub --conf settings.json -t "some/#"

• tail -f /vag/log/nginx.log | mqttcli pubsub --pub "some/a" --sub "some/#" > filterd.log