停用命令：sudo mysqladmin shutdown -u root -p
启用命令：sudo /etc/init.d/mysql restart
或者：sudo mysqld_safe -user=mysql &
3.查看现在mysql的编码
进入mysql命令：sudo mysql －u root -p
检查mysql字符集命令：show variables like 'character%';
+--------------------------+----------------------------+
| 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/ |
+--------------------------+----------------------------+
4.原来建的库和表似乎都无法生效，不过新建的则可以正常显示中文！