Ubuntu18.04修改apt-get源

1.背景

　　服務器上安裝了最新的Ubuntu Server 18.04，使用apt-get命令安裝軟件時，有時候速度比較慢，用國內的鏡像源更換下apt-get的默認源。

2.實現

（1）編輯源文件，vim /etc/apt/sources.list ，將原源使用#注釋掉。

（2）使用網易apt-get源，替換為如下（注意版本 不同，源不同，用不同的代碼替換 ”bionic“）：

deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse

（3）再執行apt-get update，apt-get upgrade，就配置好了。