过去曾经有过sudo /etc/init.d/mysql reset-password，（1）是否需要手动重新启动并再次使用sql命令设置密码？(2)
sudo /etc/init.d/mysql reset-password
(1) http://www.ubuntugeek.com/reset-the-root-password-on-mysql.html (2) http://www.howtoforge.com/reset-forgotten-mysql-root-password
mysql password
mysql ×1
password ×1