转载：Ubuntu 快速更换阿里源-阿里云开发者社区 (aliyun.com)
简介： 本文主要给大家讲解如何为Ubuntu更换阿里源，通过以下四个步骤即可快速实现换源。
一、查看ubuntu的Codename
lsb_release -a | grep Codename | awk '{print $2}' # 输出结果为下文中的Codename
二、备份系统源
cd /etc/aptsudo mv sources.list sources.list.bak三、写入阿里云的源
vi sources.list下面源信息中$Codename为第一步中系统的Codename，用记事本批量替换即可。
deb http://mirrors.aliyun.com/ubuntu/ $Codename main multiverse restricted universedeb http://mirrors.aliyun.com/ubuntu/ $Codename-backports main multiverse restricted universedeb http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main multiverse restricted universedeb http://mirrors.aliyun.com/ubuntu/ $Codename-security main multiverse restricted universedeb http://mirrors.aliyun.com/ubuntu/ $Codename-updates main multiverse restricted universedeb-src http://mirrors.aliyun.com/ubuntu/ $Codename main multiverse restricted universedeb-src http://mirrors.aliyun.com/ubuntu/ $Codename-backports main multiverse restricted universedeb-src http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main multiverse restricted universedeb-src http://mirrors.aliyun.com/ubuntu/ $Codename-security main multiverse restricted universedeb-src http://mirrors.aliyun.com/ubuntu/ $Codename-updates main multiverse restricted universe四、执行更新
执行以下命令，完成更新。
apt-get update说明：可以通过ubuntu-dists安装包下载_开源镜像站-阿里云查看是否支持当前系统的Codename。