mysql 创建数据库、授权并备份

直接上操作：

panchao@panchao-GE62-6QF:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 38
Server version: 5.7.24-0ubuntu0.18.04.1 (Ubuntu)

Copyright (c) 2000, 2018, 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> 
mysql> 
mysql> 
mysql> create datbase pcstar character set utf8 collate utf8_general_ci;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'datbase pcstar character set utf8 collate utf8_general_ci' at line 1
mysql> 
mysql> 
mysql> create database pcstar character set utf8 collate utf8_general_ci;
Query OK, 1 row affected (0.00 sec)

mysql> 
mysql> grant all on pcstar.* to 'pcstar'@localhost identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mysql> quit
Bye
panchao@panchao-GE62-6QF:~$ mysqldump -u pcstar -p --databases pcstar > Downloads/pcstar.sql
Enter password: 

还原数据库使用 source 命令，需要先登录数据库，在数据库操作界面调用该指令进行还原，语法如下：

mysql> source ~/Downloads/pcstar.sql