# MQTT Commands

setup password

```sh
docker exec --user 1883 -it mosquitto mosquitto_passwd /mosquitto/config/passwd nextuser

awesomeexodusoutdooradventures
```


## simple

```sh
mosquitto_sub -h 91.99.29.8 -t outdoor/king-arthur/sword/run
```

## safe

```sh
mosquitto_sub -L mqtts://nerdyssey.de:8883/outdoor/king-arthur/sword/run -d
mosquitto_sub -L mqtts://nerdyssey.de:8883/outdoor/king-arthur/sword/int -d

mosquitto_pub -L mqtts://nerdyssey.de:8883 -t outdoor/king-arthur/sword/run -m "SetMaintanance"

mosquitto_sub -h mqtts://nerdyssey.de:8883 -t "outdoor/king-arthur/sword/int" -u "exodususer" -P "awesomeexodusoutdooradventures"
mosquitto_pub -h <your-server-ip-or-proxy> -t "outdoor/king-arthur/sword/int" -m "Hello Secure World!" -u "exodususer" -P "awesomeexodusoutdooradventures"

mosquitto_sub -h nerdyssey.de -p 8883 -t "outdoor/king-arthur/sword/int" -u "exodususer" -P "awesomeexodusoutdooradventures" --capath /etc/ssl/certs/ -d
```

- `+` Single-level wildcard: `t1/+/sub2/sub3`
- `#` Multi-level wildcard: `t1/#/sub3`, `t1/#`

```sh
# Publishing topic with message
# -h: Host (optional)
# -t: Topic
# -m: Message
# -q: Quality of service
# -r: Retain (keep this after failed connection)
# -h: Print help info
mosquitto_pub -t someTopic -m 123 -q 1
mosquitto_pub -r -t someTopic -m "on"
mosquitto_pub -h 91.99.29.8 -t someTopic -m 123 -q 1

# Subscribing to 
# -h: Host (optional)
# -t: Topic s
#       + is wildcard
#       # is wildcard for full subtree
# -T: Exclude topic
# -q: Quality of service
mosquitto_sub -t someTopic -q 1
mosquitto_sub -t someTopic/+/subTopic
mosquitto_sub -t bbc/# -T bbc/radio3
mosquitto_sub -h 91.99.29.8 -t someTopic -q 1
```