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우분투 16.04 서버에서 "sudo apt -y update"를 실행했지만 다음 오류 :apt update error : 저장소 'http://us.archive.ubuntu.com/ubuntu saucy Release'에 릴리즈 파일이 없습니다.
# apt -y update
Reading package lists... Done
E: The repository 'http://us.archive.ubuntu.com/ubuntu saucy Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://us.archive.ubuntu.com/ubuntu saucy-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
[email protected]:/var/lib/apt# apt -y update
Get:1 http://cn.archive.ubuntu.com/ubuntu xenial InRelease [132 B]
Err:1 http://cn.archive.ubuntu.com/ubuntu xenial InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Get:2 http://cn.archive.ubuntu.com/ubuntu xenial-updates InRelease [132 B]
Err:2 http://cn.archive.ubuntu.com/ubuntu xenial-updates InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Get:3 http://cn.archive.ubuntu.com/ubuntu xenial-backports InRelease [132 B]
Err:3 http://cn.archive.ubuntu.com/ubuntu xenial-backports InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Ign:4 http://us.archive.ubuntu.com/ubuntu saucy InRelease
Hit:5 http://security.ubuntu.com/ubuntu xenial-security InRelease
Ign:6 http://us.archive.ubuntu.com/ubuntu saucy-updates InRelease
Err:7 http://us.archive.ubuntu.com/ubuntu saucy Release
404 Not Found [IP: 2001:67c:1562::16 80]
Err:8 http://us.archive.ubuntu.com/ubuntu saucy-updates Release
404 Not Found [IP: 2001:67c:1562::16 80]
Reading package lists... Done
E: The repository 'http://us.archive.ubuntu.com/ubuntu saucy Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://us.archive.ubuntu.com/ubuntu saucy-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
그 이유는 무엇입니까? 이 문제를 어떻게 해결할 수 있습니까? 고맙습니다!