Linux设置国内镜像源其实很简单，只要一行命令

相信大伙们在安装完Linux的第一件事情就是要设置一下镜像源了吧！

很多人第一次设置镜像源，当然是在网上找教程了。然而网上的教程一看，哇～怎么这么复杂！他说的那个文件我都找不到，又得找半天。找到要文件之后呢，修改了文件内容，保存。接着就是一堆莫名其妙的代码，做什么用的当然也不知道，因为没用过那些命令，只能照着在终端输入了进去，sudo rm -rf /* 也不例外。

其实，一行命令就可以自动设置国内的镜像源。我们来看看：

我所用的系统是Manjaro，执行以下命令

sudo pacman-mirrors -c China

然后输出了这一堆信息

[wu@wu-invalid ~]$ sudo pacman-mirrors -c China           
::INFO Downloading mirrors from repo.manjaro.org
::INFO User generated mirror list
::------------------------------------------------------------
::INFO Custom mirror file saved: /var/lib/pacman-mirrors/custom-mirrors.json
::INFO Using custom mirror file
::INFO Querying mirrors - This may take some time
  0.443 China          : https://mirrors.huaweicloud.com/manjaro/
  0.315 China          : http://mirrors.huaweicloud.com/manjaro/
  0.363 China          : https://mirrors.aliyun.com/manjaro/
  0.354 China          : https://mirrors.ustc.edu.cn/manjaro/
  0.631 China          : https://mirrors.tuna.tsinghua.edu.cn/manjaro/
  1.601 China          : https://mirrors.tuna.tsinghua.edu.cn/manjaro/
  0.478 China          : https://mirrors.sjtug.sjtu.edu.cn/manjaro/
::INFO Writing mirror list
::China           : https://mirrors.huaweicloud.com/manjaro/stable/$repo/$arch
::China           : https://mirrors.ustc.edu.cn/manjaro/stable/$repo/$arch
::China           : https://mirrors.aliyun.com/manjaro/stable/$repo/$arch
::China           : https://mirrors.sjtug.sjtu.edu.cn/manjaro/stable/$repo/$arch
::China           : https://mirrors.tuna.tsinghua.edu.cn/manjaro/stable/$repo/$arch
::China           : https://mirrors.tuna.tsinghua.edu.cn/manjaro/stable/$repo/$arch
::INFO Mirror list generated and saved to: /etc/pacman.d/mirrorlist
::INFO To reset custom mirrorlist 'sudo pacman-mirrors -id'
::INFO To remove custom config run  'sudo pacman-mirrors -c all'

从信息中可以看出，系统找到了好几个国内的镜像源，然后将它们写入到了/etc/pacman.d/mirrorlist文件中，我们打开这个文件看下

以下是该文件内容

##
## Manjaro Linux custom mirrorlist
## Generated on 2021-01-23 10:09
##
## Please use 'pacman-mirrors -id' To reset custom mirrorlist
## Please use 'pacman-mirrors -c all' To reset custom mirrorlist
## To remove custom config run  'pacman-mirrors -c all'
##

## Country : China
Server = https://mirrors.huaweicloud.com/manjaro/stable/$repo/$arch

## Country : China
Server = https://mirrors.ustc.edu.cn/manjaro/stable/$repo/$arch

## Country : China
Server = https://mirrors.aliyun.com/manjaro/stable/$repo/$arch

## Country : China
Server = https://mirrors.sjtug.sjtu.edu.cn/manjaro/stable/$repo/$arch

## Country : China
Server = https://mirrors.tuna.tsinghua.edu.cn/manjaro/stable/$repo/$arch

## Country : China
Server = https://mirrors.tuna.tsinghua.edu.cn/manjaro/stable/$repo/$arch