How do I know if MySQL is running on Ubuntu or not?

We check the status with the systemctl status mysql command. We use the mysqladmin tool to check if MySQL server is running.

How do I start MySQL in Linux terminal?

Launch the MySQL Command-Line Client. To launch the client, enter the following command in a Command Prompt window: mysql -u root -p . The -p option is needed only if a root password is defined for MySQL. Enter the password when prompted.