Ubuntu下载¶

1. 下载地址
   

   https://cn.ubuntu.com/download
   https://ubuntu.com/download/desktop
   http://mirrors.163.com/ubuntu-releases/
   https://mirrors.ustc.edu.cn/ubuntu-releases/
   https://mirrors.aliyun.com/ubuntu-releases/
   https://mirrors.zju.edu.cn/ubuntu-releases/
   

2. ubuntu22.04国内源
   

   1）阿里源
   deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
   deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
   2）清华源
   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-security main restricted universe multiverse
   deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security 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