需求描述：
在使用数据库，或者刚接手一个数据库时，可以查看该数据库的数据文件存放在什么位置。
操作过程：
1.通过查看datadir系统变量来查看数据目录
[mysql@redhat6 mysql-bin]$ mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 8 Server version: 5.5.57-log MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. mysql> show variables like ‘datadir‘; +---------------+--------------+ | Variable_name | Value | +---------------+--------------+ | datadir | /mysql/data/ | +---------------+--------------+ 1 row in set (0.09 sec)
备注：上面的例子中，数据目录就在/mysql/data/目录下。
文档创建时间：2018年4月3日19:32:49
