Ubuntu（20.04 LTS）更换镜像源

此换镜像源方法只适用x86_64架构的系统，其他架构的系统参考ubuntu-ports的方法
1、备份文件

1. sudo mv /etc/apt/sources.list /etc/apt/sources.list.bk

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2、创建新文件 

1. sudo vi /etc/apt/sources.list

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根据自己系统版本选择下面临应的镜像源添加到新文件中（记得保存再退出）

版本代号可用lsb_release -a 检察

 ubuntu 14.04 LTS (trusty) (EOL)

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse

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ubuntu 16.04 LTS (xenial) (EOL)

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse

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ubuntu 18.04 LTS (bionic) 

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

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ubuntu 20.04 LTS (focal) 

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse

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ubuntu 22.04 LTS (jammy)

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse

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ubuntu 23.04 (lunar)

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ lunar-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ lunar-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-proposed main restricted universe multiverse

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 ubuntu 23.10 (mantic)

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ mantic-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ mantic-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ mantic-proposed main restricted universe multiverse

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ubuntu 24.04 (noble)

1. # 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
2. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble main restricted universe multiverse
3. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble main restricted universe multiverse
4. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble-updates main restricted universe multiverse
5. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble-updates main restricted universe multiverse
6. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble-backports main restricted universe multiverse
7. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble-backports main restricted universe multiverse
9. # 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
10. deb http://security.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
11. # deb-src http://security.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
13. # 预发布软件源，不建议启用
14. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble-proposed main restricted universe multiverse
15. # # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ noble-proposed main restricted universe multiverse

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其他镜像源：
阿里云 
 中科大源

3、更新软件包及系统 

1. sudo apt-get update
2. sudo apt-get upgrade -y

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参考文档点这里 
 

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