Ubuntu 16.04 apt-get Update using Tsinghua Mirror source

1 Backing up the system configuration

sudo cp/etc/apt/sources.list/etc/apt/source.list.bak

2 Editing the configuration

sudo vi/etc/apt/sources.list

Modify the content as follows

# Default Annotated source image to improve apt update speed, if necessary, can self-uncomment deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial main restricted universe multiverse# DEB-SRC https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial main restricted universe multiverseDeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-updates main restricted universe multiverse# DEB-SRC https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-updates main restricted universe multiverseDeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-backports main restricted universe multiverse# DEB-SRC https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-backports main restricted universe multiverseDeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-security main restricted universe multiverse# DEB-SRC https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-security main restricted universe multiverse# Pre-release software source, not recommended to enable # Deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-proposed main restricted universe multiverse# DEB-SRC https://mirrors.tuna.tsinghua.edu.cn/ubuntu/xenial-proposed main restricted universe multiverse

Save and update after modifying

sudo apt-get update

Ubuntu 16.04 apt-get Update using Tsinghua Mirror source