Ubuntu16.04 換阿里源

1、在實際操作前需要搞懂幾個概念，比如Ubuntu的代號

16.04(LTS) Xenial Xerus (好客的非洲地松鼠)
16.10 Yakkety Yak（氂牛）
17.04 Zesty Zapus(開心的跳鼠)
18.04(LTS) Bionic Beaver（仿生海狸）

.....

查看當前系統的代號：lsb_release -a

2、到阿里源鏡像地址查找到相應代號

http://mirrors.aliyun.com/ubuntu/dists/

3、輸入以下命令備份原來的源

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

4、再輸入以下命令打開sources.list配置文件更換源

sudo vim/etc/apt/sources.list //配置內容如下
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
 deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
 deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
 deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse

5、再輸入命令更新源

sudo apt-get update