Check out example codes for "default password of mysql". It will help you in understanding the concepts better.
Code Example 1
user:root #The password is empty password: #If by accident you set the password and you don't remember it service mysql stop #Stop mysql service mysqld_safe --skip-grant-tables & #disable "login" mysql #Log in into mysql, you should see mysql> in prompt UPDATE mysql.user SET Password=PASSWORD('new-password') WHERE User='root'; FLUSH PRIVILEGES; # exit; # exit from mysql mysqladmin -u root -p shutdown # shutdown mysql service service mysql start # Restart your service
Code Example 2
Code Example 3
mysqladmin -u root password NEWPASSWORD
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