This is only for test environment and lazy people.
Every time we have to add MySQL username and password to log in. Using this way we can login without credentials.
MySQL Username and Password
After the below changes, you will be able to login without credentials. All the commands like mysql, mysqldump, mysqlcheck don’t need credentials.
ubuntu18:~# cat ~/.my.cnf [client] user=mysqlusername password=mysqlpassword root@ubuntu18:~#
This is just for ease.