Ubuntu sources.list 换清华源_uos qinghuayuan soucelist

一、备份原来的 sources.list 以防万一

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

二、把 sources.list 的内容替换清华源的内容

先进入 sources.list

sudo vim /etc/apt/sources.list

 如果没有 vim 可以用 gedit

sudo gedit /etc/apt/sources.list

 将 sources.list 里面的内容替换为以下的内容

# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
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

三、更新内容

sudo apt-get update

换源完毕