mysql -umythtv -p mythconverg -e 'SELECT * FROM INFORMATION_SCHEMA.USER_PRIVILEGES;'
Enter password:
+--------------+---------------+----------------+--------------+
| GRANTEE      | TABLE_CATALOG | PRIVILEGE_TYPE | IS_GRANTABLE |
+--------------+---------------+----------------+--------------+
| 'mythtv'@'%' | NULL          | USAGE          | NO           |
+--------------+---------------+----------------+--------------+