debian9执行apt-get update -y 报错404
root@bogon:/etc/apt# apt-get update && apt-get upgrade && apt-get dist-upgrade Ign:1 http://mirrors.ustc.edu.cn/kali kali InRelease Ign:2 http://mirrors.ustc.edu.cn/kali-security kali/updates InRelease Err:3 http://mirrors.ustc.edu.cn/kali kali Release 404 Not Found [IP: 218.104.71.170 80] Err:4 http://mirrors.ustc.edu.cn/kali-security kali/updates Release 404 Not Found [IP: 218.104.71.170 80] Reading package lists... Done E: The repository 'http://mirrors.ustc.edu.cn/kali kali Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://mirrors.ustc.edu.cn/kali-security kali/updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details
编辑/etc/apt/sources.list文件(需要使用sudo), 替换为下面(操作前请做好相应备份)
deb http://mirrors.aliyun.com/debian stretch main contrib non-free deb-src http://mirrors.aliyun.com/debian stretch main contrib non-free deb http://mirrors.aliyun.com/debian stretch-updates main contrib non-free deb-src http://mirrors.aliyun.com/debian stretch-updates main contrib non-free deb http://mirrors.aliyun.com/debian-security stretch/updates main contrib non-free deb-src http://mirrors.aliyun.com/debian-security stretch/updates main contrib non-free
此文章基于 https://bmvps.com/centos7-8-change-source/得到解决，感谢作者！