install ubuntu 18.04 code example

Example 1: upgrade ubuntu 16.04 to 20.04

sudo apt update && sudo apt upgrade

sudo do-release-upgrade

Example 2: install mysql ubuntu 18.04

sudo apt update
sudo apt install mysql-server
sudo mysql_secure_installation

Example 3: install docker on ubuntu 18.04

sudo apt install docker-ce
https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-18-04