方法一:
登录mysql
mysql -u root -p
如果没有设置软连接,可以进入mysql安装目录
./mysql -u root -p
(使用whereis mysql命令查看mysql的安装路径)
然后输入root密码进入mysql
mysql>use mysql;
mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='username';
mysql> FLUSH PRIVILEGES;
mysql> quit;
方法二:
mysqladmin -u root "old password" "new password"
方法三:
alter user 'root'@'localhost' identified by 'root';
FLUSH PRIVILEGES;