MySQL and MariaDB

#mysqldumpslow -s t -t 10 /var/log/mysql/mariadb-slow.log

$mysqldump --single-transaction --quick -u dbuser -p wp_example | gzip > /var/www/vhosts/example.com/wp_example.sql.gz

#mysqldump --single-transaction --quick --all-databases --routines --events | gzip > /root/all-databases.sql.gz

#for db in $(mysql -NBe 'SHOW DATABASES' | grep -Ev '^(information_schema|performance_schema|sys)$'); do mysqldump --single-transaction --quick "$db" | gzip > "/root/db-backup/$db.sql.gz"; done

#mysqlcheck --all-databases --check --silent

#mysql -e "SHOW GLOBAL STATUS LIKE 'Max_used_connections'; SHOW GLOBAL VARIABLES LIKE 'max_connections';"

#mysql -e "CREATE DATABASE wp_example CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; CREATE USER 'wp_example_user'@'localhost' IDENTIFIED BY 'SecurePassword'; GRANT ALL PRIVILEGES ON wp_example.* TO 'wp_example_user'@'localhost';"

#mysql -e 'SET GLOBAL slow_query_log = 1; SET GLOBAL long_query_time = 2; SHOW VARIABLES LIKE "slow_query_log_file";'

#mysql -e 'SELECT table_schema, table_name, ROUND((data_length + index_length) / 1024 / 1024, 1) AS mb, table_rows FROM information_schema.tables ORDER BY data_length + index_length DESC LIMIT 20;'

$gunzip -c /var/www/vhosts/example.com/wp_example.sql.gz | mysql -u dbuser -p wp_example

#mysql -e 'KILL 12345;'

#mysql -e 'SELECT user, host FROM mysql.user ORDER BY user;'

#plesk db

#mysql -e 'DROP DATABASE wp_old;'

#mysqladmin version

#mysql -e "SELECT id, user, db, time, state, LEFT(info, 100) AS query FROM information_schema.processlist WHERE command <> 'Sleep' ORDER BY time DESC;"

#mysql -e "SHOW GRANTS FOR 'dbuser'@'localhost';"

#mysql -e 'SELECT table_schema AS db, ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) AS mb FROM information_schema.tables GROUP BY table_schema ORDER BY mb DESC;'

#MYSQL_PWD=$(cat /etc/psa/.psa.shadow) mysql -u admin -e 'SHOW DATABASES;'