$ curl -sSL get.docker.com | sh

$ sudo usermod -aG docker pi

$ logout

$ docker run -it armhf/alpine /bin/sh

$ cat /etc/os-release

$ echo "Hi, this is a tiny Linux distribution!" | base64

$ echo "SGksIHRoaXMgaXMgYSB0aW55IExpbnV4IGRpc3RyaWJ1dGlvbiEK" | base64 -d

$ exit

$ docker run armhf/alpine date

$ docker images

$ cp ~/iot/lesson5/Dockerfile ~/demo

$ cd ~/demo

$ docker build -t curl_docker .

$ docker run curl_docker

$ docker images

$ git clone https://github.com/crossbario/crossbar-examples

$ cd crossbar-examples/getting-started

$ docker pull crossbario/crossbar-armhf

$ docker run -v $PWD:/node -u 0 --rm --name=crossbar -it -p 8080:8080 crossbario/crossbar-armhf

$ sudo pip3 install -U autobahn[twisted,encryption,serialization,xbr]

$ cd crossbar-examples/getting-started/1.hello-world/

$ python3 client_component_publish.py

$ cd crossbar-examples/getting-started/1.hello-world/

$ python3 client_component_subscribe.py

$ sudo apt install mosquitto mosquitto-clients

$ mosquitto_sub -h localhost -v -t "\$SYS/#"

$ mosquitto_sub -h localhost -v -t test/topic &

$ mosquitto_pub -h localhost -t test/topic -m "Hello"

$ service mosquitto status

$ netstat -tln

$ sudo pip3 install -U paho-mqtt

$ git clone https://github.com/eclipse/paho.mqtt.python.git

$ cd ~/iot/lesson5

$ python3 client.py

$ python3 sub.py

$ python3 pub.py

$ python3 sub-multiple.py

$ python3 pub-multiple.py

python3 subraspi.py

python3 pubraspi.py