mac系统下重置mysql登入密码

关闭并重启mysql服务器

sudo /usr/local/mysql/support-files/mysql.server stop
cd /usr/local/mysql/bin        
sudo su          
./mysqld_safe --skip-grant-tables &

重新打开一个终端，配置短命令：

alias mysql=/usr/local/mysql/bin/mysql
mysql                        
use mysql                  
flush privileges;        
set password for 'root'@'localhost'=password('新密码');