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1 、打开终端,输入下面命令进行备份:
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
2 、编辑sources.list文件
在终端执行下面命令,打开sources.list文件进行编辑
sudo gedit /etc/apt/sources.list
打开文件后,删除原来的文件内容,复制下面内容到sources.list里并保存
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src 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-backports main restricted universe multiverse
3、更新
sudo apt-get update
sudo apt-get upgrade
说明:
此处修改的sources.list的内容仅适用于Ubuntu 20.04版本,如果不知道自己的版本号,可通过下面命令查看:
lsb_release -a
如果是其他版本可以参考这篇文章:[Linux]Ubuntu 20.04换阿里源
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