ubuntu apt 서버 변경하기

kakao 서버로 변경(http://mirror.kakao.com/ubuntu/, 기본 서버는 속도가 느림)

$ sudo sed -i s/kr.archive.ubuntu.com/mirror.kakao.com/g /etc/apt/sources.list 
$ sudo apt update

변경된 서버에서 정보 받아오기

$ sudo apt update
받기:1 http://mirror.kakao.com/ubuntu focal InRelease [265 kB]
받기:2 http://mirror.kakao.com/ubuntu focal-updates InRelease [114 kB]
받기:3 http://mirror.kakao.com/ubuntu focal-backports InRelease [108 kB]
받기:4 http://mirror.kakao.com/ubuntu focal/main i386 Packages [718 kB]
받기:5 http://mirror.kakao.com/ubuntu focal/main amd64 Packages [970 kB]                                          
받기:6 http://mirror.kakao.com/ubuntu focal/main Translation-en [506 kB]