install mysql 5.7 in ubuntu 18.04 code example

Example 1: install mysql ubuntu 18.04

sudo apt update
sudo apt install mysql-server
sudo mysql_secure_installation

Example 2: ubuntu install mysql 5.7

Installing MySQL 5.7 on Ubuntu 20.04 (Focal Fossa)
Step 1: Add MySQL APT repository in Ubuntu. ...
Step 2: Update MySQL Repository on Ubuntu. ...
Step 3: Install MySQL 5.7 on Ubuntu 20.04 Linux machine. ...
Step 3: Secure MySQL 5.7 Installation on Ubuntu 20.04. ...
Check MySQL version. ...
Step 4: Create MySQL User (Optional, testing only)

Example 3: install mysql in ubuntu

systemctl status mysql.service