Nodejs install issue on ubuntu

Question

I install nodejs using the following command on ubuntu

curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash - sudo apt-get install -y nodejs

Then it gives this message,

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

When I do "sudo apt-get update", I get another error,

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.

Could you please let me know what how to correct that problem?

Answer 1

The errors occur because the four source links you (or some installer) added to your /etc/apt/sources.list are not found and return error 404.

If said entries are not in /etc/apt/sources.list, you can find them in some file /etc/apt/sources.list.d/*.list.

Delete the lines containing those urls in your /etc/apt/sources.list (or some file /etc/apt/sources.list.d/*.list) and install Node.js the official way:

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

Or if you want version 6:

curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs

Note

Maybe your running into that problem because your Ubuntu version is not supported. I don't think they support 15.10, but only the LTS versions (14.04 & 16.04).

If you can, upgrade to 16.04 and try again.