檢查Mysql帳號和密碼無誤後，按步執行以下linux命令

# /etc/init.d/mysql stop
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
# mysql -u root mysql

mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit

# /etc/init.d/mysql restart
# mysql -uroot -p
Enter password: newpassword

mysql>
 

命令中的newpassword是新設定的密碼，可自行更改