Unbuntu 20.04 source list

这篇博客介绍了如何在Ubuntu系统中替换默认的更新源,使用阿里云、中科大和163的镜像源,并提供了配置HTTP/HTTPS代理的方法,以加速软件包的下载与系统更新。

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替换文件:/etc/apt/sources.list
有代理的同学:可以添加代理文件/etc/apt/apt.conf.d/proxy.conf:
Acquire::http::Proxy “http://proxyaddress:proxyport”;
Acquire::https::Proxy “https://proxyaddress:proxyport”;

# aliyun
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
//zhongkeda
deb https://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
//163
deb http://mirrors.163.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ focal-backports main restricted universe multiverse

### 配置 Ubuntu 20.04 软件源 对于希望提高下载速度和稳定性,可以考虑将默认的Ubuntu官方源替换为国内镜像站点。这一步骤适用于物理机以及虚拟环境中的Ubuntu 20.04系统。 #### 查看当前使用的版本名称 为了确保使用正确的源地址,在更改之前先确认所使用的Ubuntu版本号。“focal”表示的是Ubuntu 20.04 LTS版本[^1]。 ```bash lsb_release -a ``` 上述命令可以帮助识别具体的发行版代号,这对于后续编辑`/etc/apt/sources.list`文件至关重要。 #### 编辑 `sources.list` 文件 通过修改 `/etc/apt/sources.list` 来指定新的软件仓库位置。建议备份原始文件以防万一: ```bash sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak ``` 接着打开该文件进行编辑: ```bash sudo nano /etc/apt/sources.list ``` 清空原有内容并加入适合于Ubuntu 20.04 (Focal Fossa) 的清华源配置如下所示[^3]: ```plaintext deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse ``` 保存退出后继续下一步操作。 #### 更新包索引与升级现有程序包 完成以上设置之后,运行以下两个命令刷新可用软件列表,并检查是否有任何待更新的应用程序[^4]。 ```bash sudo apt-get update && sudo apt-get upgrade ``` 这样就完成了针对Ubuntu 20.04系统的软件源切换过程,现在应该能体验到更快捷稳定的网络连接用于获取最新的安全补丁和其他资源了。
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