If your are connected as root on your MySQL database, you can list all the system and object privileges for a given user :
mysql> show grants for user ‘fool’@'localhost’;
or if you are connected as the user fool :
mysql> show grants;
mysql> show grants for current_user;
mysql> show grants for current_user();
current_user function is available if your MySQL version is equal or higher that 5.0

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