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安装应用程序和更新软件源的问题

tag-icon • tag-icon apt 14.04 updates software-center update-manager
安装应用程序和更新软件源的问题

当我尝试通过终端安装新软件时，例如：

sudo apt-get install nethogs

我收到以下错误：

E：无法获取某些档案，也许运行 apt-get update 或尝试使用 --fix-missing？

当我尝试使用--fix-missing参数后，apt-get它向我显示无法获取源。

当我使用sudo apt-get update它时，无法收集软件源，并且其中许多被忽略并且有错误。

Ign http://security.ubuntu.com trusty-security InRelease
Ign http://extras.ubuntu.com trusty InRelease 
Ign http://download.mendeley.com stable InRelease                
Ign http://archive.canonical.com trusty InRelease                              
Ign http://ir.archive.ubuntu.com trusty InRelease                
Err http://security.ubuntu.com trusty-security Release.gpg     
Connection failed [IP: 91.189.91.15 80]
Err http://download.mendeley.com stable Release.gpg
Connection failed [IP: 54.230.172.66 80]
Err http://extras.ubuntu.com trusty Release.gpg
Connection failed
Ign http://archive.canonical.com trusty InRelease
Ign http://ir.archive.ubuntu.com trusty-updates InRelease
Ign http://security.ubuntu.com trusty-security Release        
Ign http://extras.ubuntu.com trusty Release
Ign http://ir.archive.ubuntu.com trusty-backports InRelease
Err http://archive.canonical.com trusty Release.gpg
Connection failed [IP: 91.189.92.150 80]
Ign http://download.mendeley.com stable Release
Ign http://security.ubuntu.com trusty-security/main Sources/DiffIndex
Ign http://download.mendeley.com stable/main amd64 Packages/DiffIndex
Ign http://extras.ubuntu.com trusty/main Sources/DiffIndex
Err http://archive.canonical.com trusty Release.gpg
Connection failed [IP: 91.189.92.150 80]
Err http://ir.archive.ubuntu.com trusty Release.gpg
Connection failed
Ign http://security.ubuntu.com trusty-security/restricted Sources/DiffIndex
Ign http://download.mendeley.com stable/main i386 Packages/DiffIndex    
Err http://ir.archive.ubuntu.com trusty-updates Release.gpg      
Connection failed
Ign http://extras.ubuntu.com trusty/main amd64 Packages/DiffIndex        
Ign http://archive.canonical.com trusty Release               
Ign http://security.ubuntu.com trusty-security/universe Sources/DiffIndex
Ign http://archive.canonical.com trusty Release             
Ign http://extras.ubuntu.com trusty/main i386 Packages/DiffIndex
Err http://ir.archive.ubuntu.com trusty-backports Release.gpg
Connection failed
Ign http://security.ubuntu.com trusty-security/multiverse Sources/DiffIndex
Ign http://ir.archive.ubuntu.com trusty Release
Ign http://security.ubuntu.com trusty-security/main amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty-updates Release
Ign http://security.ubuntu.com trusty-security/restricted amd64 Packages/DiffIndex
Ign http://archive.canonical.com trusty/partner amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty-backports Release
Ign http://security.ubuntu.com trusty-security/universe amd64 Packages/DiffIndex
Ign http://archive.canonical.com trusty/partner i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/main Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/multiverse amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/restricted Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/main i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/universe Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/restricted i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/multiverse Sources/DiffIndex
Ign http://security.ubuntu.com trusty-security/universe i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/main amd64 Packages/DiffIndex  
Ign http://security.ubuntu.com trusty-security/multiverse i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/restricted amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/universe amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/multiverse amd64 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/main i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/restricted i386 Packages/DiffIndex
Ign http://ir.archive.ubuntu.com trusty/universe i386 Packages/DiffIndex

我读过了这线程。我已经删除了ubuntu-extras-keyring，但无法再次安装。

我认为可能是我的互联网连接出现了问题，但是当我 ping 4.2.2.4 时，它可以正常工作，我可以毫无问题地浏览互联网。

我无法安装任何软件或更新软件源。

答案1

  1. 下载ubuntu-extras-keyring然后安装。来自：

    http://packages.ubuntu.com/trusty/all/ubuntu-extras-keyring/download

  2. 然后更改下载镜像（见Download From:下拉列表），使用：

    sudo software-properties-gtk

    正如得票较高的答案中提到的那样，更新时出现“某些索引文件下载失败”

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