mysqladmin MySQL客户端管理工具

flush-hosts Flush all cached hosts (max_connect_errors)
刷新主机缓冲中的所有信息
flush-logs Flush all logs
刷新所有日志
flush-status Clear status variables
清除状态变量
flush-tables Flush all tables
刷新所有表
flush-threads Flush the thread cache
刷新线程缓存
flush-privileges Reload grant tables (same as reload)
重新载入授权表（类似reload）
create db_name Create a new database named db_name.
debug Tell the server to write debug information to the error log.
drop db_name Delete the database named db_name and all its tables.
extended-status Display the server status variables and their values.
kill id,id,...
old-password new-password 修改密码
password new-password 设置一个新密码

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# mysqladmin -uroot password aixocm 给root设置一个密码
# mysqladmin -uroot -p proc stat 查看Mysql的状态值
Enter password:
+----+------+-----------+----+---------+------+-------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+------+-----------+----+---------+------+-------+------------------+
| 8 | root | localhost | | Query | 0 | | show processlist |
+----+------+-----------+----+---------+------+-------+------------------+
Uptime: 148 Threads: 1 Questions: 8
Slow queries: 0 Opens: 33 Flush tables: 1
Open tables: 26 Queries per second avg: 0.054
Uptime --> MySQL服务器已经运行的秒数
Threads --> 活动线程（客户）的数目
Questions --> 服务器启动以来客户的问题（查询）数目
Slow Query --> 执行时间超过long_query_time秒的查询的数量
Opens --> 服务器已经打开的数据库表的数量
Flush tables --> 服务器已经执行的flush ...、refresh和reload命令的数量
Open tables --> 目前打开的表的数量


# mysqladmin -uroot -paixocm version --> 通过mysqladmin查看数据库版本
mysqladmin Ver 8.42 Distrib 5.1.52, for redhat-linux-gnu on i386
Copyright 2000-2008 MySQL AB, 2008 Sun Microsystems, Inc.
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license

Server version 5.5.20-ndb-7.2.5
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /var/lib/mysql/mysql.sock
Uptime: 4 min 8 sec

Threads: 1 Questions: 9 Slow queries: 0 Opens: 33 Flush tables: 1 Open tables: 26 Queries per second avg: 0.036