检测本机是否有安装mysql

sudo netstat -tap | grep mysql

执行上面的命令之后，看到 mysq 的socket 处于监听状态，说明有安装成功。

安装mysql

sudo apt-get install mysql-server  mysql-client libmysqlclient-dev

安装过程中会提示输入数据库管理员密码（自己设定的），如图



设置完成之后等待安装完成即可。

mysql 的登陆与退出

$ mysql -u root -pEnter password: Welcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 45Server version: 5.5.43-0ubuntu0.12.04.1 (Ubuntu)Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> quit;Bye