Create a new repository, or reuse an existing one.
Generate a new SSH key:
ssh-keygen -t rsa -C "[email protected]"
Copy the contents of the file ~/.ssh/id_rsa.pub to your SSH keys in your GitHub account settings (https://github.com/settings/keys).
Test SSH key:
$ eval $(ssh-agent -s)
$ ssh-add ~/.ssh/id_rsa
$ ssh -T [email protected]
Hi k4mrul! You've successfully authenticated, but GitHub does not provide shell access.
Change directory into the local clone of your repository (if you're not already there) and run:
git remote set-url origin [email protected]:username/your-repository.git
Now try editing a file (try the README) and then do:
$ git commit -am "Update README.md"
$ git push
You should not be asked for a username or password. If it works, your SSH key is correctly configured.