Dear: I can not start mysql server. There is an error when I start mysql using :mysqld start or safe_mysqld The error is : Can not connect to 'localhost' throught ~/mysql.sock Please check is file ~/mysql.sock exist! I checked the file, it exists, but it have zero byte. And my linux is Redhat7.0 , hostname is localhost. Can you help me start mysql in my machine? Thanks for your help! tomzhang 2001.3.31