如何更改源
1/ 在修改source.list前，最好先备份一份
(资料图片仅供参考)
执行备份命令
sudo cp /etc/apt/sources.list /etc/apt/sources.list.old
2/ 执行命令打开source.list文件：
可以用vim，gedit,atom等工具打开
sudo vim /etc/apt/source.list
或
sudo gedit /etc/apt/source.list
或(你得自己安装atom，我觉得挺好的一个工具)
sudo atom /etc/apt/source.list
3/复制源
把下面的任意一下复制到source.list中去，并覆盖原来的文件内容。
东北大学源
deb-src http://mirror.neu.edu.cn/ubuntu/ xenial main restricted #Added by software-propertiesdeb http://mirror.neu.edu.cn/ubuntu/ xenial main restricteddeb-src http://mirror.neu.edu.cn/ubuntu/ xenial restricted multiverse universe #Added by software-propertiesdeb http://mirror.neu.edu.cn/ubuntu/ xenial-updates main restricteddeb-src http://mirror.neu.edu.cn/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-propertiesdeb http://mirror.neu.edu.cn/ubuntu/ xenial universedeb http://mirror.neu.edu.cn/ubuntu/ xenial-updates universedeb http://mirror.neu.edu.cn/ubuntu/ xenial multiversedeb http://mirror.neu.edu.cn/ubuntu/ xenial-updates multiversedeb http://mirror.neu.edu.cn/ubuntu/ xenial-backports main restricted universe multiversedeb-src http://mirror.neu.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-propertiesdeb http://archive.canonical.com/ubuntu xenial partnerdeb-src http://archive.canonical.com/ubuntu xenial partnerdeb http://mirror.neu.edu.cn/ubuntu/ xenial-security main restricteddeb-src http://mirror.neu.edu.cn/ubuntu/ xenial-security main restricted multiverse universe #Added by software-propertiesdeb http://mirror.neu.edu.cn/ubuntu/ xenial-security universedeb http://mirror.neu.edu.cn/ubuntu/ xenial-security multiverse
清华大学
# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricteddeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricteddeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricteddeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universedeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universedeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiversedeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiversedeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiversedeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricteddeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universedeb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse
阿里云源
# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricteddeb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-propertiesdeb http://mirrors.aliyun.com/ubuntu/ xenial main restricteddeb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-propertiesdeb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricteddeb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-propertiesdeb http://mirrors.aliyun.com/ubuntu/ xenial universedeb http://mirrors.aliyun.com/ubuntu/ xenial-updates universedeb http://mirrors.aliyun.com/ubuntu/ xenial multiversedeb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiversedeb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-propertiesdeb http://archive.canonical.com/ubuntu xenial partnerdeb-src http://archive.canonical.com/ubuntu xenial partnerdeb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricteddeb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-propertiesdeb http://mirrors.aliyun.com/ubuntu/ xenial-security universedeb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse
4/update命令
sudo apt-get update
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
