Mysql快速创建数据库、用户、授权、修改密码

利用shell运行mysql语句，快速而方便地创建MySQL用户和数据库。

下面给出创建语句，其中美元符号表示命令提示符：

$ mysql -u adminusername -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5340 to server version: 3.23.54
 
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
 
mysql> CREATE DATABASE databasename;
Query OK, 1 row affected (0.00 sec)
 
mysql> GRANT ALL PRIVILEGES ON databasename.* TO "wordpressusername"@"hostname" IDENTIFIED BY "password";
Query OK, 0 rows affected (0.00 sec)
  
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)

mysql> EXIT
Bye
$ 


撤销授权：
revoke all on  information_schema.* from user;

修改密码：
update user set password=password('passwd') where user='root' ;