我在ubuntu上使用以下命令安装nodejs
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash - sudo apt-get install -y nodejs
然后它给出了这条消息，
Reading package lists... Done
Building dependency tree
Reading state information... Done
nodejs is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 253 not upgraded.
W: Duplicate sources.list entry https://dl.bintray.com/sbt/debian/ Packages (/var/lib/apt/lists/dl.bintray.com_sbt_debian_Packages)
W: You may want to run apt-get update to correct these problems
当我做“sudo apt-get update”时，我收到另一个错误，
W: Failed to fetch http://ppa.launchpad.net/chris-lea/node.js/ubuntu/dists/wily/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/chris-lea/node.js/ubuntu/dists/wily/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/ole.wolf/rarcrack/ubuntu/dists/wily/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/ole.wolf/rarcrack/ubuntu/dists/wily/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
请您告诉我如何解决这个问题？
答案 0 :(得分：1)
发生错误是因为找不到您（或某些安装程序）添加到/etc/apt/sources.list的四个源链接并返回错误404.
如果所述条目不在/etc/apt/sources.list中，您可以在某个文件/etc/apt/sources.list.d/*.list中找到它们。
删除/etc/apt/sources.list（或某个文件/etc/apt/sources.list.d/*.list）中包含这些网址的行，并以官方方式安装Node.js：
https://nodejs.org/en/download/package-manager/#debian-and-ubuntu-based-linux-distributions
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs
或者如果你想要版本6：
curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs
注意
也许您遇到了这个问题，因为您的Ubuntu版本不受支持。 我不认为他们支持15.10，但只支持LTS版本（14.04＆amp; 16.04）。
如果可以，请升级到16.04然后重试。