處理 Ubuntu update 404

今天重裝了 Ubuntu 1604 Server 結果就出現更新錯誤 404 其實是配置文件智障了 ……

apt update && apt upgrade -y

備份，移除，創建 sources.list

cp /etc/apt/sources.list /etc/apt/sources.bak
rm /etc/apt/sources.list
vim /etc/apt/sources.list

複製以下內容到 sources.list

deb http://mirrors.aliyun.com/ubuntu/ xenial main
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main

deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main

deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb-src http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates universe

deb http://mirrors.aliyun.com/ubuntu/ xenial-security main
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security universe

再次啟動更新，正常獲取到信息了，可能需要運行 3 次更新命令

apt update && apt upgrade -y

更新完再試一下，已經沒有需要更新的信息

apt update && apt upgrade -y

重啟之後 也不提示發現新的更新包

reboot