1 修改下载源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup #备份当前也就是默认官方的源列表
sudo gedit /etc/apt/sources.list #修改sources.list文件中源的列表，删除全部内容，替换为国内源地址。 保存编辑好的文件。
sudo apt-get update #更新源列表，换源后必须执行
国内源
deb http://mirrors.aliyun.com/ubuntu/ trusty main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main multiverse restricted universe
2 查看软件安装目录
find / name mysql
whereis mysql
3 添加c++环境
sudo apt-get install build-essential
sudo apt-get install libgmp-dev libmpfr-dev libmpc-dev libisl-dev
sudo apt-get install cmake
sudo apt-get install lsb-core
