如何為Ubuntu選擇速度最快的更新來源：圖文教學

給ubuntu選擇最快的更新來源

1、開啟設定》》軟體與更新，如下圖

#2、下載自：下拉選單，選擇其他網站

##3、你可以選擇最佳伺服器，也可以指定你滿意的伺服器。 選擇之後要求輸入密碼

#4、選擇關閉，之後會重新自動執行更新指令（sudo apt-get update），更新完成

#安裝Ubuntu18.04後，使用國外源太慢了，修改為國內源會快很多。

修改阿里源為Ubuntu 18.04預設的來源

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

在/etc/apt/sources.list檔案前面新增以下條目

#新增阿里源
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

最後執行如下指令更新來源

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

另外其他幾個國內源如下：
中科大源

##中科大源
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
# deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

163源

##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

清華源

##清華源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ 仿生主受限宇宙多元宇宙
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ 仿生主受限宇宙多元宇宙
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates 主要受限宇宙多元宇宙
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates 主要受限宇宙多元宇宙
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports 主要受限宇宙多元宇宙
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports 主要受限宇宙多元宇宙
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security 主受限宇宙多元宇宙
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security 主要受限宇宙多元宇宙
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ 仿生提出的主要受限宇宙多元宇宙
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ 仿生提出的主要受限宇宙多元宇宙

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