ubuntu设置国内源

打开终端

2.输入以下命令备份原来的源。

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

3.再输入以下命令打开sources.list配置文件更换源。

sudo vim/etc/apt/sources.list

配置内容如下

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse 

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

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

deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse 

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

deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse 

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

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

deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse 

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

4.再输入命令更新源。

sudo apt-get update

5.最后输入命令更新一下软件即可。

sudo apt-get upgrade