mysql 修改用户密码

1. # ./mysqladmin -u username -p userpwd password "newpwd" //Linux刚开始安装完后root用户没有密码。可以直接去掉-p参数

2. # mysql -u root
  mysql> use mysql;
  mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
  mysql> FLUSH PRIVILEGES;
在丢失root密码的时候,可以这样
  mysqld_safe --skip-grant-tables&
  mysql -u root mysql
  mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';
  mysql> FLUSH PRIVILEGES; .

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