錯誤提示：
root@localhost ~]# mysql --socket=/tmp/mysql.sock
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
解決方法：
由於mysql 默認的mysql.sock 是在/var/lib/mysql/mysql.sock，但linux系統總是去/tmp/mysql.sock查找，所以會報錯
[root@localhost ~]# find / -name mysql.sock
/var/lib/mysql/mysql.sock
1.直接指定mysql通道
[root@localhost ~]# mysql --socket=/var/lib/mysql/mysql.sock
Welcome to the MySQL monitor. Commands end with ; or /g.
Your MySQL connection id is 2 to server version: 5.0.22
Type 'help;' or '/h' for help. Type '/c' to clear the buffer.
mysql>
2. 創建符號連接：
爲mysql.sock增加軟連接（相當於windows中的快捷方式）。
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
eg：
root@localhost ~]# mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
[root@localhost ~]# ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
[root@localhost ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or /g.
Your MySQL connection id is 3 to server version: 5.0.22
Type 'help;' or '/h' for help. Type '/c' to clear the buffer.
mysql>
我覺得這兩個方法挺好用的
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本文轉載自：http://blog.csdn.net/wyzxg/article/details/4720041