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        以ubuntu为例， 执行：

1. sudo apt-get install mysql-server

2. sudo apt-get install mysql-client

3. sudo apt-get install libmysqlclient-dev

      安装完毕， 就是这么简单。 安装过程会提示输入密码， 建议你输入密码， 不过我只直接一路按enter坐过来的。

      sudo netstat -tap | grep mysql  命令用于检测是否安装成功， 如下：

taogeqq@taogeqq-virtual-machine:~$ sudo netstat -tap | grep mysql
tcp        0      0 localhost:mysql         *:*                     LISTEN      7019/mysqld     
taogeqq@taogeqq-virtual-machine:~$ 

       一切OK, 登录：

taogeqq@taogeqq-virtual-machine:~$ mysql -u root -p              
Enter password: 

       我直接按enter, 于是：

taogeqq@taogeqq-virtual-machine:~$ mysql -u root -p              
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 44
Server version: 5.5.54-0ubuntu0.12.04.1 (Ubuntu)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> 

        来看看：

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
+--------------------+
3 rows in set (0.01 sec)

mysql> 

        如此简单。