1，清华源地址
地址：https://mirror.tuna.tsinghua.edu.cn/help/ubuntu/
2，获取ubuntu(arm)的源
ubuntu(arm)要使用清华源中ubuntu-ports源
以上源可以去清华源中获取，或者复制我下面得即可
# 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-ports/ jammy main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-security main restricted universe multiverse
# 预发布软件源，不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-proposed main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ jammy-proposed main restricted universe multiverse
3，跟新unbuntu(arm)的源
sudo vim /etc/apt/sources.list
打开sources.list文件，按dd对文件进行删除或者按i对文件进行修改加上注释，然后在把清华源复制进这个文件即可文章来源：https://www.toymoban.com/news/detail-559426.html
4，unbuntu(arm)进行跟新
sudo apt-get update
sudo apt-get upgrade
完成后即可使用清华源进行软件下载文章来源地址https://www.toymoban.com/news/detail-559426.html
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