目的：为了解决上网查资料过慢问题。可以通过换源来提高速度。
（1）备份系统源
cd /etc/apt sudo mv sources.list sources.list.bak
（2）开始修改sources文件
有安装vim用户：
sudo vim sources.list
无安装vim用户：
sudo geidit sources.list
(3)写入阿里云的源
发现现在很多源都没办法用了，我自己用了阿里云的源可以用，希望对你们有用
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 deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
（4）执行更新
apt-get update
标签：教程,http,mirrors,jammy,换源,aliyun,Ubuntu,main,multiverse From： https://www.cnblogs.com/zhangsanlisi411/p/16801224.html