mysql 数据库启动问题

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[Gogo_yueyue@ShadowFiend 下载]$ mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
[Gogo_yueyue@ShadowFiend 下载]$ su
密码：
[root@ShadowFiend 下载]# mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
[root@ShadowFiend 下载]# service mysqlId start
mysqlId: 未被识别的服务
[root@ShadowFiend 下载]# /etc/init.d/mysqld start
正在启动 mysqld：                                          [确定]
[root@ShadowFiend 下载]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.47 Source distribution

Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL v2 license

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> 

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