Yes it is highly recommended that you change the default login credentials for your Administrator user. You can change the password after you login using the default credentials.
To change the root password of your MySQL server follow the instructions given here:
Also, please don’t paste any critical information related to your login credentials here as it’s a public forum.
do you know why it has 2 password? one for root and one for remote? which one do i change when following the command?
It’s recommend that you change both the default passwords.
Can I use the commen on bench or i have to cd to remove the directory first?
You can run the command in any directory. Since it’s a standard linux command it should work anywhere in the system. Just make sure you run the command with correct sudo privileges wherever necessary.