Ubuntu 如果某个版本的生命周期已经结束, 更新就没法进行了, 会出现类似下面的错误:

mohd-arafat-hossain@TUD:~$ sudo apt-get update [sudo] password for mohd-arafat-hossain: Ign http://bd.archive.ubuntu.com precise InRelease Ign http://bd.archive.ubuntu.com precise-updates InRelease
Ign http://bd.archive.ubuntu.com precise-backports InRelease
Ign http://bd.archive.ubuntu.com precise Release.gpg
Ign http://bd.archive.ubuntu.com precise-updates Release.gpg
Ign http://bd.archive.ubuntu.com precise-backports Release.gpg
Ign http://bd.archive.ubuntu.com precise Release
Ign http://bd.archive.ubuntu.com precise-updates Release
Ign http://bd.archive.ubuntu.com precise-backports Release
Ign http://extras.ubuntu.com precise InRelease
Ign http://ppa.launchpad.net precise InRelease
Hit http://extras.ubuntu.com precise Release.gpg
Hit http://ppa.launchpad.net precise Release.gpg
Hit http://extras.ubuntu.com precise Release
Hit http://ppa.launchpad.net precise Release
Hit http://extras.ubuntu.com precise/main Sources
Hit http://bd.archive.ubuntu.com precise/main TranslationIndex
Hit http://ppa.launchpad.net precise/main Sources
Hit http://bd.archive.ubuntu.com precise/multiverse TranslationIndex
Hit http://bd.archive.ubuntu.com precise/restricted TranslationIndex
Hit http://extras.ubuntu.com precise/main i386 Packages
Ign http://extras.ubuntu.com precise/main TranslationIndex
Hit http://bd.archive.ubuntu.com precise/universe TranslationIndex
Hit http://ppa.launchpad.net precise/main i386 Packages
Ign http://ppa.launchpad.net precise/main TranslationIndex
Ign http://security.ubuntu.com precise-security InRelease
Hit http://security.ubuntu.com precise-security Release.gpg
Hit http://bd.archive.ubuntu.com precise-updates/main TranslationIndex
Hit http://security.ubuntu.com precise-security Release
Hit http://bd.archive.ubuntu.com precise-updates/multiverse TranslationIndex
Hit http://bd.archive.ubuntu.com precise-updates/restricted TranslationIndex
Hit http://bd.archive.ubuntu.com precise-updates/universe TranslationIndex Hit http://security.ubuntu.com precise-security/main Sources
Ign http://extras.ubuntu.com precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://extras.ubuntu.com precise/main Translation-en
Hit http://bd.archive.ubuntu.com precise-backports/main TranslationIndex Hit http://bd.archive.ubuntu.com precise-backports/multiverse TranslationIndex Hit http://bd.archive.ubuntu.com precise-backports/restricted TranslationIndex Ign http://ppa.launchpad.net precise/main Translation-en Hit http://bd.archive.ubuntu.com precise-backports/universe TranslationIndex
Hit http://bd.archive.ubuntu.com precise/main Translation-en
Hit http://bd.archive.ubuntu.com precise/multiverse Translation-en
Hit http://bd.archive.ubuntu.com precise/restricted Translation-en Hit http://bd.archive.ubuntu.com precise/universe Translation-en Hit http://security.ubuntu.com precise-security/restricted Sources
Hit http://security.ubuntu.com precise-security/universe Sources
Hit http://security.ubuntu.com precise-security/multiverse Sources
Hit http://security.ubuntu.com precise-security/main i386 Packages
Hit http://security.ubuntu.com precise-security/restricted i386 Packages Hit http://bd.archive.ubuntu.com precise-updates/main Translation-en
Hit http://bd.archive.ubuntu.com precise-updates/multiverse Translation-en
Hit http://security.ubuntu.com precise-security/universe i386 Packages Hit http://security.ubuntu.com precise-security/multiverse i386 Packages Hit http://security.ubuntu.com precise-security/main TranslationIndex Hit http://security.ubuntu.com precise-security/multiverse TranslationIndex
Hit http://security.ubuntu.com precise-security/restricted TranslationIndex
Hit http://security.ubuntu.com precise-security/universe TranslationIndex
Hit http://bd.archive.ubuntu.com precise-updates/restricted Translation-en
Hit http://bd.archive.ubuntu.com precise-updates/universe Translation-en
Hit http://security.ubuntu.com precise-security/main Translation-en Hit http://security.ubuntu.com precise-security/multiverse Translation-en
Hit http://security.ubuntu.com precise-security/restricted Translation-en
Hit http://security.ubuntu.com precise-security/universe Translation-en
Hit http://bd.archive.ubuntu.com precise-backports/main Translation-en
Hit http://bd.archive.ubuntu.com precise-backports/multiverse Translation-en Hit http://bd.archive.ubuntu.com precise-backports/restricted Translation-en Hit http://bd.archive.ubuntu.com precise-backports/universe Translation-en Err http://bd.archive.ubuntu.com precise/main Sources
404 Not Found Err http://bd.archive.ubuntu.com precise/restricted Sources 404 Not Found Err http://bd.archive.ubuntu.com precise/universe Sources 404 Not Found Err http://bd.archive.ubuntu.com precise/multiverse Sources 404 Not Found Err http://bd.archive.ubuntu.com precise/main i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise/restricted i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise/universe i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise/multiverse i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/main Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/restricted Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/universe Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/multiverse Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/main i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/restricted i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/universe i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-updates/multiverse i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/main Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/restricted Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/universe Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/multiverse Sources 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/main i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/restricted i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/universe i386 Packages 404 Not Found Err http://bd.archive.ubuntu.com precise-backports/multiverse i386 Packages 404 Not Found W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/main/source/Sources 404 Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/restricted/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/universe/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/multiverse/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/main/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/restricted/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise/multiverse/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/main/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/main/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/main/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/source/Sources  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/main/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/binary-i386/Packages  404  Not Found

W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

可以用如下的方法解决:

  • 备份先有的配置文件: 

    sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

  • 替换源地址: 

    sudo sed -i -e ’s/ca.archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g’ /etc/apt/sources.list

    这里的 ca.archive.ubuntu.com 就是之前在更新时提示错误的 url 里的一部分, 根据实际情况替换.

    • 运行更新命令: 
      sudo apt-get update