❯ ls -la ~/.ssh
❯ ssh-keygen -t ed25519 -C "xxx@gmail.com"
start the backend daemon as SSH private key agent, -s indicates output following Bourne shell(sh) format
❯ eval "$(ssh-agent -s)"
❯ ssh-add ~/.ssh/id_ed25519
❯ pbcopy < ~/.ssh/id_ed25519.pub
❯ ssh -T git@github.com
git remote -v
git remote set-url origin git@github.com:username/repo.git