Redirect Github Pages to custom domain

Question

I have created a Github Pages site and put it on repository abc of github account with username xyz. So, my site is now live on xyz.github.io/abc I created a cname file with my custom domain, and configured my DNS with the settings said on Github pages. Now, my site is also live on mycustomdomain.com Now, I don't want my site to be live on xyz.github.io/abc . I want it to redirect to mycustomdomain.com or not accessible. Is there any way to do that? I know that I can create User Pages site (with username.github.io) which will automatically redirect to custom domain, but I want to create project site. Any suggestions?

Answer 1

A CNAME solution:

Sure. Github has a nice functionality for it.
When you create CNAME folder inside of your repo, you will be redirected: https://help.github.com/articles/adding-a-cname-file-to-your-repository/

Check out my Github Pages website: https://github.com/ondrek/ondrek.github.io
( you can browse ondrek.com, but it's impossible to browse ondrek.github.io )

A JS solution:

If you want to redirect a custom page — the only possible solution will be javascript redirection.

if (window.location.href==="https://xyz.github.io") {
    window.location.href = "https://mycustomdomain.com"; 
}

but it will not solve your problem with Google. You can solve this with correct using Google Webmaster Tools and tell to Google about the duplicate (for SEO purposes).