insert tbl into db  
mysql -h localhost -u user -pPass db_kampus < db_kampus.sql

dump table structure
mysqldump --add-drop-table -d -h localhost -u user -pPass userdb > userdb.sql

Reset Passwd
sudo systemctl stop mysql
sudo mysqld_safe --skip-grant-tables &
mysql -u root

alt 1
ALTER USER 'root'@'%' IDENTIFIED BY 'Pass';
GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE ON *.* TO 'root';
FLUSH PRIVILEGES;

alt 2
UPDATE mysql.user SET authentication_string = PASSWORD('Pass')
WHERE User = 'root' AND Host = 'localhost';
FLUSH PRIVILEGES;

mysqladmin -u root -p shutdown

sudo systemctl start mariadb

resolve error
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
systemctl stop mysql
sudo usermod -d /var/lib/mysql/ mysql
systemctl start mysql

resolve ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' 
systemctl status mysql
if inactive 
systemctl start mysql