Hi,
you can start mysql using an init file.
#
# create admin user
#
# mysql-init.txt
#
CREATE USER 'root'@'%' IDENTIFIED BY 'admin123';
CREATE USER 'root'@'localhost' IDENTIFIED BY 'admin123';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION;
and start mysql using this file
mysqld --init-file="mysql-init.txt" --console
Marcus