Ubuntu18.10 server版 更换软件源

1、备份原文件

sudo cp /etc/sources.list /etc/sources.list_20190306

2、查看当前系统版本

momo@ubuntuserver:~$ lsb_release -c
Codename:       cosmic

3、将sources.list文件中的内容删除,然后添加以下内容

deb http://mirrors.aliyun.com/ubuntu/ cosmic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ cosmic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ cosmic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ cosmic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ cosmic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ cosmic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ cosmic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ cosmic-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ cosmic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ cosmic-proposed main restricted universe multiverse
4、更新

sudo apt-get update 

sudo apt-get upgrade

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