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经常我们要优化一下 MySQL 数据库，菜鸟就进 phpMyAdmin 一个个点优化
开发PHP的，一般就在网站的程序里通过 php 实现了，但这 2 种方法都不够好
下面告诉你一个绝招，用 mysqlcheck 一条命令搞定，高效又安全
请试下在 putty 或crt里执行下面的命令：
mysqlcheck -Aao --auto-repair -u你的用户名 -p你的密码
如果不出意外，你将发现，你所有的数据库都被优化和修复了一次！
如果提示 mysqlcheck 找不到呢， 如果不是，请跳过这步。
找不到 mysqlcheck 的原因一般是手动编译安装的，像我一样，就 locate mysqlcheck 一下，发现在 /usr/local/mysql/bin/ 下面，就是我安装MySQL时指定的路径
,OK,给他加个快捷方式
ln -s /usr/local/mysql/bin/mysqlcheck /usr/bin/mysqlcheck
下面说下几个参数的含义
-a, --analyze 分析 [Analyze given tables]
-o, --optimize 优化 [Optimize table]
-A, --all-databases 所有的数据库 [Check all the database]
--auto-repair 自动修复 [If a checked table is corrupted, automatically fix it. Repairing will be done after all tables have been
好了，把它加入 cron job 每天在 01:00 自动执行
crontab -e
0 1 * * * mysqlcheck -Aao –auto-repair -u你的用户名 -p你的密码 > /dev/null 2>&1
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