ls -al ~/.ssh

ssh-keygen -t rsa -b 4096 -C "[email protected]"

eval "$(ssh-agent -s)" ssh-add ~/.ssh/id_rsa

cat ~/.ssh/id_rsa.pub

Go to your GitHub profile → Settings → SSH and GPG Keys → New SSH Key. Paste your public key and save it.

ssh -T [email protected]

it will show Hi ! You've successfully authenticated, but GitHub does not provide shell access.

git remote -v

git remote set-url origin [email protected]:/.git

git push origin