Ubuntu 22.04.2 LTS系统缺失sources.list文件/目录及源获取失败问题求助

Hey 👋，看你在找Ubuntu 22.04.2 LTS（代号jammy）的/etc/apt/sources.list配置内容，我直接给你贴官方默认的版本，你可以直接用：

# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb http://archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse

# deb-src http://archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src http://security.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse

如果你的/etc/apt/sources.list文件丢失或者损坏了，可以按下面的步骤恢复：

• 先备份现有文件（如果还存在的话）：sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak
• 用nano编辑器创建新的配置文件：sudo nano /etc/apt/sources.list
• 把上面的内容粘贴进去，按Ctrl+O保存，再按Ctrl+X退出编辑器
• 最后更新源缓存：sudo apt update

备注：内容来源于stack exchange，提问作者Nikolay Stadnik