在Ubuntu或Debian系统的服务器上卸载MySQL的方法

对于有的vps，系统默认安装了mysql。我们需要从我们的服务器、vps上卸载(移除)默认的mysql。那么如何(怎样)在ubuntu\Debian上卸载mysql?

通常情况下，下列mysql软件包会被安装到 Debian 、Ubuntu中：

• mysql-client - The latest version of MySQL database client(最新版的mysql数据库客户端).

• mysql-server - The latest version of MySQL database server.(最新版的mysql数据库服务端)

• mysql-common - MySQL database common files(mysql数据库命令文件)

那么如何怎样在ubuntu\Debian上卸载mysql？
只需要使用 apt-get 命令 即可，如下面的命令，同时卸载 ubuntu \ Debian 中的 mysql server 和 mysql client ：

sudo apt-get --purge remove mysql-client mysql-server mysql-common
sudo apt-get autoremove

解释: --purge 移除所给的软件包和配置文件

remove 表示卸载软件包

autoremove 表示自动卸载软件包，以及与该软件包的依赖(软件包)

输入如下(注意软件包名字)：

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
linux-headers-3.2.0-31-virtual linux-headers-3.2.0-31
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
libdbd-mysql-perl* libmysqlclient18* mysql-client* mysql-client-5.5* mysql-common* mysql-server*
mysql-server-5.5*
0 upgraded, 0 newly installed, 7 to remove and 0 not upgraded.
After this operation, 67.5 MB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 105097 files and directories currently installed.)
Removing mysql-server ...
Removing mysql-server-5.5 ...
mysql stop/waiting
Purging configuration files for mysql-server-5.5 ...
Removing mysql-client ...
Removing mysql-client-5.5 ...
Removing libdbd-mysql-perl ...
Removing libmysqlclient18 ...
Purging configuration files for libmysqlclient18 ...
Removing mysql-common ...
Purging configuration files for mysql-common ...
dpkg: warning: while removing mysql-common, directory '/etc/mysql' not empty so not removed.
Processing triggers for ureadahead ...
Processing triggers for man-db ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place

删除 /etc/mysql 目录，使用如下命令:

sudo rm -rf /etc/mysql/  

解释：-r 同时删除该目录下的所有子目录。 -f 表示强制删除