ubuntu 20.04 LTS 更换阿里云源

第一步：先备份下原始源：

sudo cp /etc/apt/source.list /etc/apt/source.list.backup

第二步：修改文件   

sudo vim  /etc/apt/source.list

清除原有的，替换以下源

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted
deb http://mirrors.aliyun.com/ubuntu/ focal universe
deb http://mirrors.aliyun.com/ubuntu/ focal-updates universe
deb http://mirrors.aliyun.com/ubuntu/ focal multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted
deb http://mirrors.aliyun.com/ubuntu/ focal-security universe
deb http://mirrors.aliyun.com/ubuntu/ focal-security multiverse

 保存下，即可执行更新

sudo  apt update
sudo  apt upgrade

标签：LTS,云源,http,mirrors,aliyun,ubuntu,com,focal
来源： https://www.cnblogs.com/chinasoft/p/15420913.html