第一步:用帐号登录mysql

[root@CentOs5 ~]# mysql -u root
 
第二步:改变用户数据库
mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
 
第三步:修改密码,记得密码要用password()函数进行加密,一定不要忘记!!!
mysql> update user set password=password('qwe123'where user='root';
Query OK, 1 row affected (0.04 sec)
Rows matched: 1  Changed: 1  Warnings: 0
 
第四步:刷新权限表
mysql> flush previleges;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘previleges’ at line 1
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
 
第五步:退出mysql
mysql> quit
Bye
 
第六步:对mysql进行重启
[root@CentOs5 ~]# service mysqld restart;
STOPPING server from pid file /var/run/mysqld/mysqld.pid
100421 13:44:03  mysqld ended
Stopping MySQL:                                            [  OK  ]
Starting MySQL:                                            [  OK  ]
[1]+  Done                    mysqld_safe –skip-grant-tables