安裝好ubuntu雙系統(tǒng)后，默認(rèn)的軟件更新源是國外的，在國內(nèi)使用速度很慢淹仑，需要更換成國內(nèi)的源，這樣才能正常安裝和更新軟件肺孵。
一匀借、ubuntu16.04更換國內(nèi)源
1.備份原始源文件sources.list
桌面打開終端，執(zhí)行命令：
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
2.修改源文件sources.list
（1）終端執(zhí)行命令：
sudo chmod 777 /etc/apt/sources.list 更改文件權(quán)限使其可編輯平窘；
（2）執(zhí)行命令：
sudo gedit /etc/apt/sources.list 打開文件進(jìn)行編輯吓肋；
（3）刪除原來的文件內(nèi)容，復(fù)制下面的任意一個(gè)到其中并保存（常用的是阿里源和清華源瑰艘，推薦阿里源）是鬼；
阿里源：
deb http://mirrors.aliyun.com/ubuntu/?xenial main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?xenial-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?xenial-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?xenial-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?xenial main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?xenial-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?xenial-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?xenial-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?xenial-backports main restricted universe multiverse
清華源：
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-proposed main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-proposed main restricted universe multiverse
3.更新源
桌面終端執(zhí)行命令：
sudo apt update更新軟件列表，換源完成紫新。
二均蜜、ubuntu18.04更換國內(nèi)源
1.備份原始源文件sources.list
桌面打開終端，執(zhí)行命令：
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
2.修改源文件sources.list
（1）終端執(zhí)行命令：
sudo chmod 777 /etc/apt/source.list 更改文件權(quán)限使其可編輯芒率；
（2）執(zhí)行命令：
sudo gedit /etc/apt/sources.list打開文件進(jìn)行編輯囤耳；
（3）刪除原來的文件內(nèi)容，復(fù)制下面的任意一個(gè)到其中并保存（常用的是阿里源和清華源偶芍，推薦阿里源充择，內(nèi)容可以去博客復(fù)制）；
阿里源：
deb http://mirrors.aliyun.com/ubuntu/?bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/?bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/?bionic-backports main restricted universe multiverse
清華源：
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-proposed main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/?bionic-proposed main restricted universe multiverse
163源：
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.更新源
桌面終端執(zhí)行命令：
sudo apt update更新軟件列表匪蟀，換源完成椎麦。
參考:
