备份原list
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
使用gedit修改sources.list
sudo gedit /etc/apt/sources.list
编辑/etc/apt/sources.list文件, 在文件最前面添加清华镜像源:
# 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/ focal main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
刷新列表:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install build-essential
参考资料:
https://zhuanlan.zhihu.com/p/61228593
https://mirror.tuna.tsinghua.edu.cn/help/ubuntu/