我要评论一、源文件位置
ubuntu24.04的源地址配置文件发生改变，不再使用以前的sources.list文件，升级24.04之后，而是使用如下文件
/etc/apt/sources.list.d/ubuntu.sources
二、开始换源
1. 备份源配置文件
sudo cp /etc/apt/sources.list.d/ubuntu.sources /etc/apt/sources.list.d/ubuntu.sources.bak
2. 编辑源配置文件
sudo vim /etc/apt/sources.list.d/ubuntu.sources
通常刚安装的ubuntu24.04系统默认的源配置文件内容如下所示：
3. 添加清华源配置
清华源
types: deb
uris: http://mirrors.tuna.tsinghua.edu.cn/ubuntu/
suites: noble noble-updates noble-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg
添加后结果如下：
4. 更新
sudo apt-get update
sudo apt-get upgrade
三、其它源
中科大源
types: deb
uris: http://mirrors.ustc.edu.cn/ubuntu/
suites: noble noble-updates noble-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg
阿里源
types: deb
uris: http://mirrors.aliyun.com/ubuntu/
suites: noble noble-updates noble-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg
网易源
types: deb
uris: http://mirrors.163.com/ubuntu/
suites: noble noble-updates noble-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg
四、arm64-ubuntu配置（2024-0723补充）
只需在ubuntu后面添加-ports即可。
types: deb
uris: http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/
suites: noble noble-updates noble-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg
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