修改 Ubuntu 18.04 的默认源为国内源

安装Ubuntu 18.04后，使用国外源太慢了，修改为国内源会快很多。本文教你如何修改阿里源为Ubuntu 18.04默认的源。

备份/etc/apt/sources.list

#备份
cp /etc/apt/sources.list /etc/apt/sources.list.bak

在/etc/apt/sources.list文件前面添加如下条目

#添加阿里源
deb  bionic main restricted universe multiverse
deb  bionic-security main restricted universe multiverse
deb  bionic-updates main restricted universe multiverse
deb  bionic-proposed main restricted universe multiverse
deb  bionic-backports main restricted universe multiverse
deb-src  bionic main restricted universe multiverse
deb-src  bionic-security main restricted universe multiverse
deb-src  bionic-updates main restricted universe multiverse
deb-src  bionic-proposed main restricted universe multiverse
deb-src  bionic-backports main restricted universe multiverse

最后执行如下更新源

##更新
sudo apt-get update
sudo apt-get upgrade

另外其他几个国内源如下：

中科大源

##中科大源
deb  bionic main restricted universe multiverse
deb-src  bionic main restricted universe multiverse
deb  bionic-updates main restricted universe multiverse
deb-src  bionic-updates main restricted universe multiverse
deb  bionic-backports main restricted universe multiverse
deb-src  bionic-backports main restricted universe multiverse
deb  bionic-security main restricted universe multiverse
deb-src  bionic-security main restricted universe multiverse
deb  bionic-proposed main restricted universe multiverse
deb-src  bionic-proposed main restricted universe multiverse

163源

##163源
deb  bionic main restricted universe multiverse
deb  bionic-security main restricted universe multiverse
deb  bionic-updates main restricted universe multiverse
deb  bionic-proposed main restricted universe multiverse
deb  bionic-backports main restricted universe multiverse
deb-src  bionic main restricted universe multiverse
deb-src  bionic-security main restricted universe multiverse
deb-src  bionic-updates main restricted universe multiverse
deb-src  bionic-proposed main restricted universe multiverse
deb-src  bionic-backports main restricted universe multiverse

清华源

##清华源
deb  bionic main restricted universe multiverse
deb-src  bionic main restricted universe multiverse
deb  bionic-updates main restricted universe multiverse
deb-src  bionic-updates main restricted universe multiverse
deb  bionic-backports main restricted universe multiverse
deb-src  bionic-backports main restricted universe multiverse
deb  bionic-security main restricted universe multiverse
deb-src  bionic-security main restricted universe multiverse
deb  bionic-proposed main restricted universe multiverse
deb-src  bionic-proposed main restricted universe multiverse