A.rpm-ivh mysql*.rpm B.rpm-ivh mysql-server*.rpm C.rpm-ivh mysqld*.rpm D.rpm-ivh mysqld-server*.rpm
A.mysqladmin-uroot-p xxx B.mysqladmin-uroot--password xxx C.mysqladmin-urootpassword xxx D.mysql-uroot--password xxx
A.--skip-grant-tables B.--skip-grant-databases C.--skip-grant-table D.--skip-grant-database