sudo service mysqld restart
sudo service mysqld start
sudo service mysqld stop 停止服务
cat /var/log/mysqld.log | grep password 获取密码
mysql -uroot -p xxxxx输入密码进入sql
mysql -u root -p
进入mysql
show databases; 展示有哪些数据
use mysql; 用mysql数据库
show tables; 表格
select * from user \G; 查看user表数据有多少
\G 格式化显示
select * from user \G; * 替换为 host 和user
select Host, User from user \G; 查看host和user表格
update user set host = '%' where Host = "localhost" and User = "root"; 允许任何地方都可以链接