Github “fatal: remote origin already exists”

For this type of error you should just update the existing remote using:

        $ git remote set-url origin git@github.com:ppreyer/first_app.git

As the error message indicates, there is already a remote configured with the same name. So you can either add the new remote with a different name:

To add a new remote, for example, github instead of origin, do the following:

        $ git remote add github git@github.com:ppreyer/first_app.git

While pushing you should use

        git push github master

Thus, you can resolve the error “remote origin already exists” by creating a new remote with a different name instead of origin.