작성일 : 2021.08.03. 테스트: Ubuntu 18.04 # root 비밀번호 설정 sudo passwd root # apt repository 를 한국 kakao mirror 서버로 변경 sudo sed -i 's/kr.archive.ubuntu.com/mirror.kakao.com/g' /etc/apt/sources.list && sudo sed -i 's/archive.ubuntu.com/mirror.kakao.com/g' /etc/apt/sources.list && sudo sed -i 's/security.ubuntu.com/mirror.kakao.com/g' /etc/apt/sources.list # Package upgrade sudo apt update && sudo apt upgr..