从Ubuntu 24.04开始，Ubuntu的软件源配置文件变更为DEB822格式，路径为/etc/apt/sources.list.d/ubuntu.sources
Types: deb
URIs: http://mirrors.cloud.aliyuncs.com/ubuntu
Suites: noble noble-updates noble-backports
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
# 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
Types: deb-src
URIs: http://mirrors.cloud.aliyuncs.com/ubuntu
Suites: noble noble-updates noble-backports
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
# 以下安全更新软件源包含了官方源与镜像站配置，如有需要可自行修改注释切换
Types: deb
URIs: http://security.ubuntu.com/ubuntu/
Suites: noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
Types: deb-src
URIs: http://security.ubuntu.com/ubuntu/
Suites: noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
# 预发布软件源，不建议启用
# Types: deb
# URIs: http://mirrors.cloud.aliyuncs.com/ubuntu
# Suites: noble-proposed
# Components: main restricted universe multiverse
# Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
# Types: deb-src
# URIs: http://mirrors.cloud.aliyuncs.com/ubuntu
# Suites: noble-proposed
# Components: main restricted universe multiverse
# Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg