Ubuntu Server 18.04 切换软件源到国内镜像

zz775520666

• 　　Ubuntu 源列表
  

　　【中科大】
　　1、repository file generator
　　2、具体命令：
wget https://mirrors.ustc.edu.cn/repogen/conf/ubuntu-http-4-bionic -O sources.list
# or https
wget https://mirrors.ustc.edu.cn/repogen/conf/ubuntu-https-4-bionic -O sources.list
sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak
sudo mv sources.list /etc/apt/sources.list
sudo apt update【阿里云】
编辑文件 /etc/apt/sources.list ：
deb https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
## Not recommended
# deb https://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse　　【sources.list 内容说明】

• 　　关于组件：apt 背后的故事
  

main： 免费，Ubuntu 官方维护的自由软件
restricted： 不免费，但是正规支持的，一般是设备专有驱动
universe：免费，社区维护的自由软件
multiverse：不免费，无正规支持，非自由软件

• 　　关于更新：UbuntuUpdates
  

security：重要的安全更新
updates：非安全性更新，即不影响到系统安全的 bug 修补。
proposed：预更新，小 beta 版，过后会进入[updates]或[security]。
backports：新软件的反向导出，新软件为老系统编译的版本。　　*** walker ***