Ubuntu26.04换阿里云镜像源过程_阿里

先备份原始源，再替换为阿里云源即可。

ubuntu 26.04（resolute raccoon）默认已经使用 .sources 格式，而不是老的 sources.list。

1. 备份原配置

sudo cp /etc/apt/sources.list.d/ubuntu.sources /etc/apt/sources.list.d/ubuntu.sources.bak

2. 编辑镜像源

sudo vim /etc/apt/sources.list.d/ubuntu.sources

将内容替换为：

types: deb
uris: https://mirrors.aliyun.com/ubuntu/
suites: resolute resolute-updates resolute-backports
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg

types: deb
uris: https://mirrors.aliyun.com/ubuntu/
suites: resolute-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg

3. 更新缓存

sudo apt update

4. 验证是否生效

apt policy

或者：

grep -e "mirrors.aliyun.com" /etc/apt/sources.list.d/ubuntu.sources

一键脚本（推荐）

直接执行：

sudo bash -c 'cat > /etc/apt/sources.list.d/ubuntu.sources <<eof
types: deb
uris: https://mirrors.aliyun.com/ubuntu/
suites: resolute resolute-updates resolute-backports
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg

types: deb
uris: https://mirrors.aliyun.com/ubuntu/
suites: resolute-security
components: main restricted universe multiverse
signed-by: /usr/share/keyrings/ubuntu-archive-keyring.gpg
eof'

sudo apt update