完整Ubuntu镜像更换国内软件源 可选163 阿里 清华 中科大

如今老蒋用Ubuntu镜像是比较多的，目前常用的是22.04版本。但是这里有一个问题，我们在选择海外服务器的时候，Ubuntu镜像在安装软件的时候很慢，这个主要问题是软件源是国外的原生源，这里我们如果更换成国内的阿里 清华 中科大等源，那安装软件速度会更好。

在这里，老蒋整理国内的主流源和更新方法。

第一、备份Ubuntu源方法

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup

我们提前将 sources.list 备份一下，如果搞错还可以恢复。

第二、编辑Ubuntu镜像源文件

vi /etc/apt/sources.list

这里我们用 vi 编辑器打开文件，删除里面内容，然后重新更换成下面准备好的几个国内源。如果我们不熟悉 vi 编辑器，也可以本地文本编辑后替换。

第三、备用国内源内容

这里，老蒋准备好国内的几个常用源，我们可以选择。

1、163源

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-backports main restricted universe multiverse

2、阿里云源

deb http://mirrors.aliyum.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyum.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyum.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyum.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyum.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyum.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyum.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyum.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.aliyum.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyum.com/ubuntu/ focal-backports main restricted universe multiverse

3、清华源

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

4、中科大源

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

一般我们用这些。

这里我们在替换之后，执行命令升级。

sudo apt-get update
sudo apt-get upgrade

这里，我们可以看到输入两行命令执行升级。

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