镜像下载、域名解析、时间同步请点击 阿里巴巴开源镜像站
一、查看ubuntu的Codename
lsb_release -a | grep Codename | awk '{print $2}' # 输出结果为下文中的Codename
二、备份系统源
cd /etc/apt
sudo mv sources.list sources.list.bak三、写入阿里云的源
vi sources.list下面源信息中$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 universe
deb http://mirrors.aliyun.com/ubuntu/ $Codename-backports main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ $Codename-security main multiverse restricted universe
deb http://mirrors.aliyun.com/ubuntu/ $Codename-updates main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-backports main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main multiverse restricted universe
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-security main multiverse restricted universe
deb-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http://mirrors.aliyun.com/ubuntu/dists/查看是否支持当前系统的Codename。
“ 阿里巴巴开源镜像站 提供全面，高效和稳定的系统镜像、应用软件下载、域名解析和时间同步服务。”
