http://segmentfault.com/q/1010000000094608
同样的问题，先在网上搜了下其他人解决这个问题的方法，是去修改mysql.cnf文件添加mysql.sock文件路径，再搜了一下我的mac没有mysql.cnf，也没有mysql.sock文件。
在查看mysql的安装说明ReadMe.txt中有个启动方法
If you have installed the Startup Item, use this command:
shell> sudo /Library/StartupItems/MySQLCOM/MySQLCOM start
(ENTER YOUR PASSWORD, IF NECESSARY)
(PRESS CONTROL-D OR ENTER "EXIT" TO EXIT THE SHELL)
If you don't use the Startup Item, enter the following command sequence:
shell> cd /usr/local/mysql
shell> sudo ./bin/mysqld_safe
(ENTER YOUR PASSWORD, IF NECESSARY)
(PRESS CONTROL-Z)
shell> bg
(PRESS CONTROL-D OR ENTER "EXIT" TO EXIT THE SHELL)
使用sudo的时候会让你输入你的登陆密码。
这样就可以启动
[chopin:~:22:47:07]$ sudo /Library/StartupItems/MySQLCOM/MySQLCOM start
Password:
Starting MySQL database server
[chopin:~:22:52:06]$ mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.1.63 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
