ubuntu 1804 镜像源

### Ubuntu 18.04官方和第三方镜像源列表 对于Ubuntu 18.04而言，确保`/etc/apt/sources.list`文件中的条目指向正确的版本非常重要。如果使用错误的版本号，则可能会遇到无法更新或安装软件包的问题[^1]。 #### 官方镜像源 官方Ubuntu仓库提供了稳定且安全的软件资源。以下是针对Ubuntu 18.04 LTS (Bionic Beaver) 的默认配置： ```bash deb http://archive.ubuntu.com/ubuntu bionic main restricted universe multiverse deb http://security.ubuntu.com/ubuntu bionic-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse ``` 这些入口分别指定了不同的服务器路径来获取基本系统组件、安全性补丁以及额外的应用程序和支持库。 #### 第三方镜像源 ##### 阿里云镜像源 阿里云为中国用户提供了一套快速稳定的Linux发行版镜像服务。对于Ubuntu 18.04来说，可以采用如下设置以提高下载速度： ```bash deb https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse ``` 此配置不仅涵盖了常规更新还包含了提议的新功能(`proposed`)部分，可以根据实际需求调整是否启用该选项[^3]。 ##### 清华大学开源软件镜像站(TUNA) 另一个受欢迎的选择是中国清华大学维护的TUNA镜像站点，它同样支持多种操作系统及其依赖项的高速分发： ```bash deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse ``` 通过上述任意一种方式修改`sources.list`后记得执行命令刷新缓存并同步最新的可用包信息: ```bash sudo apt-get update && sudo apt-get upgrade -y ```