Centos 7

在系统中输入以下命令

cd /etc/yum.repos.d/

wget http://mirrors.aliyun.com/repo/Centos-7.repo

mv Centos-7.repo CentOS-Base.repo

yum update -y

ubuntu

修改 /etc/apt/sources.list为如下内容：

# $Codename 需要替换为具体的版本名称
deb http://mirrors.aliyun.com/ubuntu/ $Codename main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ $Codename-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ $Codename-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ $Codename-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-backports main restricted universe multiverse

$Codename 的具体值可以通过 lsb_release -a命令查看

lsb_release -a

替换文件后运行 sudo apt-get update 即可完成软件源替换。