1 2 3 4 | lars@lars-xenial2:~$ mysql -P "" -utestuser -ppass databasename mysql: [Warning] mysql: Empty value for 'port' specified. Will throw an error in future versions mysql: [Warning] Using a password on the command line interface can be insecure. ERROR 1044 (42000): Access denied for user 'testuser'@'%' to database 'databasename' |