ubuntu 22.04国内镜像
国内镜像阿里云/163源/清华大学/中科大
Ubuntu 22.04 LTS这是一个长期支持版本，它将被支持五年，直到2027年4月。已发布的LTS版本带来了一些新的功能。如果你正在使用Ubuntu 20.04 LTS，你会注意到许多视觉上的变化。
当然作为国内用户首要任务安装完成之后首要任务就是更改ubuntu 22.04的镜像/软件源。
国内有很多Ubuntu 22.04的镜像源，包括阿里、网易，还有很多教育网的镜像源，比如清华源、中科大源。
在教程中我们将介绍如何更改镜像在ubuntu 22.04。国内的包括有镜像阿里云/163源/清华大学/中科大。
首先我们需要先备份Ubuntu官方的软件源，执行以下命令将备份原来的软件源。
sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak
清华大学镜像
复制以下命令即可一键切换到清华大学ubuntu 22.04镜像：
sudo bash -c “cat << EOF > /etc/apt/sources.list && apt update deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
EOF”
163镜像
复制以下命令即可一键切换到163 ubuntu 22.04镜像：
sudo bash -c “cat << EOF > /etc/apt/sources.list && apt update deb http://mirrors.163.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-backports main restricted universe multiverse EOF”
阿里云镜像
复制以下命令即可一键切换到阿里云 ubuntu 22.04镜像：
中科大镜像
复制以下命令即可一键切换到中科大ubuntu 22.04镜像： sudo bash -c “cat << EOF > /etc/apt/sources.list && apt update deb https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse EOF”