Install Mosquitto on Raspbian

To install Mosquito
wget http://repo.mosquitto.org/debian/mosquitto-repo.gpg.key
sudo apt-key add mosquitto-repo.gpg.key
cd /etc/apt/sources.list.d/
sudo wget http://repo.mosquitto.org/debian/mosquitto-buster.list
sudo apt update
sudo apt upgrade
sudo apt full-upgrade
sudo apt install mosquitto
sudo apt install mosquitto-clients