To set a password for the root MySQL user, you need to connect to the MySQL server as the root MySQL user; you can use the command mysql -u root to do so. This command connects you to the server with the MySQL client. When you have the MySQL command prompt, issue a command like the following to set a password for the root user:
mysql> SET PASSWORD FOR root = PASSWORD("secretword");
secretword should be replaced by whatever you want to be the password for the root user. You can use this same command with other usernames to set or change passwords for other database users.
After you enter a password, you can exit the MySQL client by typing exit at the command prompt.
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