mysql 完全卸载

https://askubuntu.com/questions/643251/having-trouble-installing-and-removing-mysql-in-ubuntu

sudo apt-get remove --purge mysql-\*

[popexizhi：

sudo apt-get remove mysql-\* 无法删除mysql的配置和数据库文件
重新安装会提示如下:
dpkg: error processing package mysql-common (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 mysql-common

]