mysql

dump

DB_HOST="127.0.0.1"
DB_NAME="dbname"
DB_USER="dbuser"
DB_PASSWORD="123456"
TARGET_FILENAME=${DB_NAME}_dump_$(date -d "today" +"%Y%m%d%H%M%S").sql
mysqldump -v -h $DB_HOST --user=$DB_USER -p"$DB_PASSWORD" $DB_NAME > $TARGET_FILENAME

Import

mysql -uroot -p database_name < file.sql

Misc

# list users
SELECT user, host FROM mysql.user;

# grant all permisions
GRANT ALL PRIVILEGES ON mydb.* TO 'myuser'@'%' WITH GRANT OPTION;