ubuntu2404换源

Types: deb

URIs: http://cn.archive.ubuntu.com/ubuntu/
Suites: noble noble-updates noble-backports
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

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

进入这个目录 

/etc/apt/sources.list.d/

输入命令

nano ubuntu.sources

粘贴最上面的代码  

ctrl + o 写入

enter  确认

ctrl x退出