Ubuntu的MYSQL使用apt-get安装的，直接跳过了配置的过程，所以默认不能输入中文；
 
1.查找MySQL的cnf文件的位置
 
find / -iname '*.cnf' -print
 
/etc/ssl/openssl.cnf
/etc//debian.cnf
/etc/mysql/conf.d/mysqld_safe_syslog.cnf
/etc/mysql/my.cnf
/usr/share/doc/mysql-server-5.1/examples/my-small.cnf
/usr/share/ssl-cert/ssleay.cnf  www.2cto.com  
/usr/lib/ssl/openssl.cnf
 
2. 直接配置/etc/mysql/my.cnf文件
 
3. 修改my.cnf
 
vi /etc/my.cnf
在[client]下添加
default-character-set=utf8
在[mysqld]下添加
default-character-set=utf8
 
4.重新启动MySQL
 
[root@bogon ~]# sudo /etc/init.d/mysql restart
Shutting down MySQL                                         [ 确定 ]
Starting MySQL.                                             [ 确定 ]
[root@bogon ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.1.22-rc-community-log MySQL Community Edition (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
 
5.查看字符集设置
 
mysql> show variables like 'collation_%';
+----------------------+-----------------+
| Variable_name         | Value            |
+----------------------+-----------------+
| collation_connection | utf8_general_ci |
| collation_database    | utf8_general_ci |
| collation_server      | utf8_general_ci |
+----------------------+-----------------+
3 rows in set (0.02 sec)  www.2cto.com  
mysql> show variables like 'character_set_%';
+--------------------------+----------------------------+
| Variable_name             | Value                       |
+--------------------------+----------------------------+
| character_set_client      | utf8                        |
| character_set_connection | utf8                        |
| character_set_database    | utf8                        |
| character_set_filesystem | binary                      |
| character_set_results     | utf8                        |
| character_set_server      | utf8                        |
| character_set_system      | utf8                        |
| character_sets_dir        | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.02 sec)
mysql>