This is the default example configuration of mysql.cnf provided by MariaDB. This config file was generated by MariaDB running on Debian 9.
It is located under: /etc/mysql/conf.d/mysql.cnf
[mysql]
Download the raw file with wget or curl
wget -O mysql.cnf.example http://exampleconfig.com/static/raw/mariadb/debian9/etc/mysql/conf.d/mysql.cnf
curl http://exampleconfig.com/static/raw/mariadb/debian9/etc/mysql/conf.d/mysql.cnf > mysql.cnf.example
Other config files you might find useful