I have a problem when trying to install ruby 2.0 under Ubuntu 15.04 box
I have add ppa:brightbox/ruby-ng
with bellow command:
sudo apt-add-repository ppa:brightbox/ruby-ng
And I get following error when I use sudo apt-get update
:
W: Failed to fetch http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
How I can fix this issue?