This command will allow grant you access to MySql without the need for a password (from the command line) providing you’re running on a server powered by Plesk.
I’ve categorised this as “Maintenance” however you can use this in conjunction with backing up / importing databases to bypass the need for a password.
Use the below command to backup a .sql dump of your database
mysqldump -uadmin -p`cat /etc/psa/.psa.shadow` database_name > database_backup.sql
Equally, use the below command to import your database
mysql -uadmin -p`cat /etc/psa/.psa.shadow` database_name < database_backup.sql
It kind of goes without saying but, there’s a reason there’s passwords. Tread carefully when using these commands as you can easily overwrite a database you didn’t mean to