linux mysql详细使用 摘自beginning linux programming一书

检测mysl是否启动：

ps -el|grep mysqld

4 S     0  2176  1995  0  80   0 -   554 rt_sig pts/0    00:00:00 mysqld_safe
4 S   104  2532  2176  0  80   0 - 79297 poll_s pts/0    00:00:00 mysqld

mysqld_safe是一个以正确的id启动真正的mysqld进程的工具。

 

原文：As with a Linux system, it’s a bad idea to use the root account to log in to MySQL unless it’s absolutely necessary, so you should create an everyday user for normal use.

linux系统不适于用root用户登录mysql，所以应当创建一个日常用户。

原文：the root user is allowed to connect from only the local machine as a security measure.

出于安全考虑，root用户仅可从本地机器连接mysql。

一. Grant方法：

原文：You create users and assign them privileges by using the grant command.

使用grant方法创建用户、赋予用户权限。

1. Create a local login for rick

示例：grant all on *.* to rick@localhost identified by '123456';

2. create a login from anywhere on the class C subnet of 192.168.0. Notice that you must use
single quotes to protect the IP range, and use a mask /255.255.255.0 to identify the range of
IP addresses that are allowed

示例：GRANT ALL ON *.* TO rick@‘192.168.0.0/255.255.255.0’ IDENTIFIED BY ‘secretpassword’;

3. Finally, create a login so that rick can log on from any machine in the wiley.com domain
(again notice the single quotes)

示例：GRANT ALL ON *.* TO rick@‘%.wiley.com’ IDENTIFIED BY ‘secretpassword’;