linux apt-get 设置国内镜像

清华源地址

https://mirrors.tuna.tsinghua.edu.cn/help/ubuntu/

image-20200920211725535

在桌面新建tsinghua.list

cd ~/Desktop
touch tsinghua.list
sudo ln -s /home/{your name}/Desktop/tsinghua.list /etc/apt/sources.list.d/tsinghua.list

tsinghua.list内容

# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-security main restricted universe multiverse

# 预发布软件源，不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-proposed main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ groovy-proposed main restricted universe multiverse

执行更新

apt-get update

可能会报如下错误：

image-20200920213146896

这里需要执行以下命令

echo "sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys \$1" > add_apt_key.sh
chmod +x add_apt_key.sh
./add_apt_key.sh 871920D1991BC93C

重新执行更新就正常了

apt-get update