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Using Multiple SSH Keys

I have a single computer and different GitHub accounts. I cannot use the same SSH key twice, which means I have to create a new SSH key for each GitHub account.

  1. Create a new SSH key. Use your respective GitHub email adress.
ssh-keygen -t ed25519 -C "[email protected]"

  1. Add the public SSH key to your GitHub account: Settings -> SSH and GPG keys -> New SSH key

  2. Configure your SSH config (~/.ssh/config).

Host gh_work
    HostName github.com
    IdentityFile ~/.ssh/id_ed25519_work

Host gh_personal
    HostName github.com
    IdentityFile ~/.ssh/id_ed25519_personal
  1. Clone repository using a specific ssh key. This is the important part - clone your repository with a specific GitHub user:
git clone git@gh_work:foo/bar.git

If you have an existing repository, change the remote url.

git remote set-url origin git@gh_work:foo/bar.git