本文档以配置阿里云源为例，可将地址替换为其它源，如清华源地址：mirrors.tuna.tsinghua.edu.cn

rm -rf /etc/yum.repos.d/*.repo #删除repo文件，或者自己备份
curl -o /etc/yum.repos.d/CentOS-Base.repo http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930265.repo
curl -o /etc/yum.repos.d/epel.repo http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930296.repo
yum makecache #更新缓存

rm -rf /etc/yum.repos.d/*.repo #删除repo文件，或者自己备份
curl -o /etc/yum.repos.d/CentOS-Base.repo http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930361.repo
curl -o/etc/yum.repos.d/epel.repo http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930446.repo
yum makecache #更新缓存

mv /etc/apt/sources.list{,bak} #备份sources.list
cat > /etc/apt/sources.list << EOF
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic main restricted universe multiverse
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic main restricted universe multiverse
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-security main restricted universe multiverse
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-security main restricted universe multiverse
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-updates main restricted universe multiverse
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-updates main restricted universe multiverse
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-proposed main restricted universe multiverse
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-proposed main restricted universe multiverse
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-backports main restricted universe multiverse
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg bionic-backports main restricted universe multiverse
EOF
apt update

mv /etc/apt/sources.list{,bak} #备份sources.list
cat > /etc/apt/sources.list << EOF
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial main
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial main
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-updates main
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-updates main
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial universe
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial universe
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-updates universe
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-updates universe
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-security main
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-security main
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-security universe
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102930543.jpg xenial-security universe
EOF
apt update

mv /etc/apt/sources.list{,bak} #备份sources.list
cat > /etc/apt/sources.list << EOF
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg stretch main non-free contrib
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg stretch main non-free contrib
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933931.jpg stretch/updates main
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933931.jpg stretch/updates main
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg stretch-updates main non-free contrib
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg stretch-updates main non-free contrib
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg stretch-backports main non-free contrib
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg stretch-backports main non-free contrib
EOF
apt update

mv /etc/apt/sources.list{,bak} #备份sources.list
cat > /etc/apt/sources.list << EOF
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg jessie main non-free contrib
deb http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg jessie-proposed-updates main non-free contrib
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg jessie main non-free contrib
deb-src http://www.51sjk.com/Upload/Articles/1/0/327/327545_20220921102933480.jpg jessie-proposed-updates main non-free contrib
EOF
apt update