ubunt修改mysql数据库的密码

1.如果您没有忘记密码的情况下，可以通过UPDATE直接编辑user表来修改密码：进入数据库mysql -u rootmysql> use mysql;mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';mysql> FLUSH PRIVILEGES;2.如果您已经忘记密码：# /etc/init.d/mysql stop                                   1、结束当前正在运行的mysql进程。# /usr/bin/mysqld_safe --skip-grant-tables     2、用mysql安全模式运行并跳过权限验证。# mysql -u root                                               3、重开一个终端以root身份登录mysql。mysql> use mysql;                                          4、修改root用户口令。Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> update user set Password = PASSWORD('root') where User ='root';Query OK, 3 rows affected (0.00 sec)Rows matched: 3 Changed: 3 Warnings: 0mysql> exit# /etc/init.d/mysql restart                                5、结束mysql安全模式，用正常模式运行mysql。mysql> update mysql.user set password=PASSWORD（'新密码'） where User='root'；                                                                        6、试试你新修改的口令mysql> flush privileges；mysql> quit