在安装apt方面有问题

Question

我正在尝试快速安装，我使用了下面的命令：

sudo add-apt-repository ppa:apt-fast/stable
sudo apt-get update

更新我的来源后，我会收到以下警告：

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.
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Ign http://ubuntu.unitedcolo.de trusty/main Translation-en_US                  
Ign http://ubuntu.unitedcolo.de trusty/multiverse Translation-en_US
Ign http://ubuntu.unitedcolo.de trusty/restricted Translation-en_US
Ign http://ubuntu.unitedcolo.de trusty/universe Translation-en_US
Ign http://ubuntu.unitedcolo.de trusty-updates/main Translation-en_US
Ign http://ubuntu.unitedcolo.de trusty-updates/multiverse Translation-en_US
Ign http://ubuntu.unitedcolo.de trusty-updates/restricted Translation-en_US
Ign http://ubuntu.unitedcolo.de trusty-updates/universe Translation-en_US
Fetched 21.2 MB in 13min 19s (26.5 kB/s)
W: Failed to fetch http://ppa.launchpad.net/apt-fast/stable/ubuntu/dists/trusty/main/source/Sources  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/apt-fast/stable/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/apt-fast/stable/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found

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

当我进入时：

sudo apt-get install apt-fast

它说，没有合适的快速包：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package apt-fast

为什么会发生这种事？

谢谢

Answer 1

根据https://launchpad.net/~apt-fast/+archive/ubuntu/stable/+packages的说法，它不能作为可信赖的ppa。你可以去https://launchpad.net/~apt-fas，向他们要求更新，或者从https://github.com/ilikenwf/apt-fast的源代码下载它