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用途：
設定軟體源，用於快速安裝軟體。

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圖形化介面
1、桌面右上角，點選設定，選擇“system-settings”
2、選擇download&Updates
3、在Ubuntu選項卡中，在download from中選擇other，找到china中的aliyun。選擇之後點確定即可。

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命令列頁面
1、編輯源引數
cd /etc/apt/ && sudo cp sources.list sources.list.bak

sudo vim sources.list

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-backports main restricted universe multiverse
##測試版源
deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# 原始碼
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-backports main restricted universe multiverse
##測試版源
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# Canonical 合作伙伴和附加
deb http://archive.canonical.com/ubuntu/ xenial partner
deb http://extras.ubuntu.com/ubuntu/ xenial main

2、更新資源
sudo apt-get update

補充：
1、如果按照某軟體過程中,，出現一直報“0%正在等待報頭”的錯誤。
1）選擇國內源，比如阿里源
2）要把原來的源資訊刪除，重新安裝。
cd /var/cache/apt && sudo rm -rf archives