查看MySQL的默认数据目录

登录到数据库中，执行如下语句：

MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE 'datadir';
+---------------+-----------------+
| Variable_name | Value           |
+---------------+-----------------+
| datadir       | /var/lib/mysql/ |
+---------------+-----------------+
1 row in set (0.00 sec)