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E：无法定位包屏幕

tag-icon • tag-icon command-line apt package-management virtualbox source-packages
E：无法定位包屏幕

我知道如果有人在 Google 上搜索上述错误，那么他会得到大量结果。然而，在尝试了许多建议的解决方案，并全职处理这个错误大约一周后，是时候寻求帮助了。

我在 Windows 10 机器上使用 Oracle VirtualBox。作为客户操作系统，我安装了 Ubuntu 16.04.04。

这是我尝试过的：

  • 如上所述这里， 我有

    deb https://apt.dockerproject.org/repo ubuntu-xenial main 在我的源列表中。我如何检查？通过运行

find /etc/apt/ -name '*.list' -exec bash -c 'echo -e "\n$1\n"; cat -n "$1"' _ '{}' \;

在命令行中，结果为：

`/etc/apt/sources.list.d/docker.list

 1  deb https://apt.dockerproject.org/repo ubuntu-xenial main

/etc/apt/sources.list

 1  deb http://de.archive.ubuntu.com/ubuntu/ xenial main universe restricted multiverse
 2  deb-src http://de.archive.ubuntu.com/ubuntu/ xenial main universe restricted multiverse #Added by software-properties
 3  deb http://de.archive.ubuntu.com/ubuntu/ xenial-updates universe restricted main multiverse
 4  deb http://security.ubuntu.com/ubuntu/ xenial-security universe restricted main multiverse
 5  deb https://packages.ubuntu.com/xenial/screen/ubuntu xenial main
 6  deb-src https://packages.ubuntu.com/xenial/screen/ubuntu xenial main
 7  deb-src https://apt.dockerproject.org/repo ubuntu-xenial main`

但是，这并没有解决错误，甚至之后还sudo apt-get update出现：

Reading package lists... Done
W: The repository 'http://de.archive.ubuntu.com/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://de.archive.ubuntu.com/ubuntu xenial-updates Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://security.ubuntu.com/ubuntu xenial-security Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: Failed to fetch https://packages.ubuntu.com/xenial/screen/ubuntu/dists/xenial/InRelease  Could not resolve host: packages.ubuntu.com
W: Failed to fetch https://apt.dockerproject.org/repo/dists/ubuntu-xenial/InRelease  Could not resolve host: apt.dockerproject.org
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/xenial/main/source/Sources  Something wicked happened resolving 'de.archive.ubuntu.com:http' (-5 - No address associated with hostname)
E: Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/xenial-updates/universe/binary-amd64/Packages  Something wicked happened resolving 'de.archive.ubuntu.com:http' (-5 - No address associated with hostname)
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/universe/binary-amd64/Packages  Something wicked happened resolving 'security.ubuntu.com:http' (-5 - No address associated with hostname)
W: Some index files failed to download. They have been ignored, or old ones used instead.
  • 我应该提到，当我将新源添加到列表中，并在以下弹出窗口中按“重新加载”时

在此处输入图片描述

尽管我确定互联网可以正常工作，但我还是收到以下错误。

在此处输入图片描述

每当我想要安装新包时都会发生错误E: Unable to locate package XXX，不仅仅是screen。

因此现在当我尝试screen使用安装时sudo apt-get install screen，我得到：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package screen

值得注意的是，我正在使用代理人。

由于这个错误已经让我不知所措，我非常感谢任何帮助

答案1

解决方案是必须使用代理进行更正配置，这必须在/etc/environment 和中完成/etc/apt/apt.conf例如，在/etc/environment我应该有这样的内容：

http_proxy="http://XXX.XX.XXX.XX:XX"
https_proxy="http://XXX.XX.XXX.XX:XX"
no_proxy=1,2,3,4,5,6,7,8,9,0

而/etc/apt/apt.conf

Acquire::http::Proxy "http://XXX.XX.XXX.XX:XX";
Acquire::http::proxy::XX.XXX.X.XXX "DIRECT";
Acquire::https::Proxy "http://XXX.XX.XXX.XX:XX";

当然，X 将被正确的数字替换。

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