ubuntu 20.04 etc apt sources.list

• https://gist.github.com/ishad0w/788555191c7037e249a439542c53e170
• 실수로 apt 리포지토리 설정을 건들였다가 무언가 심각하게 잘못되었음을 알게 된 가엾은 나에게 주어진 단물같은 파일...
• /etc/apt/sources.list 파일에 다음을 추가하고

deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner

• sudo apt update && sudo apt upgrade 를 실행하면 된다.