mysql --user=my_username --passwordCREATE USER 'username'@'localhost' IDENTIFIED BY 'password';CREATE DATABASE `db_name`;
GRANT ALL PRIVILEGES ON `db_name` . * TO 'username'@'localhost';SET password for 'username'@'localhost' = password('my_new_password');Stop mysqld process
sudo mysqld_safe --skip-grant-tables &sudo mysql --protocol=socket