github ssh key

Checking for existing SSH keys
Before you generate an SSH key, you can check to see if you have any existing SSH keys.

Open Git Bash.Enter ls -al ~/.ssh to see if existing SSH keys are present:

    ls -al ~/.ssh    # Lists the files in your .ssh directory, if they exist

Check the directory listing to see if you already have a public SSH key.

By default, the filenames of the public keys are one of the following:

id_dsa.pubid_ecdsa.pubid_ed25519.pubid_rsa.pub

    If you don't have an existing public and private key pair, or don't wish to use any that are available to connect to GitHub, then generate a new SSH key.    If you see an existing public and private key pair listed (for example id_rsa.pub and id_rsa) that you would like to use to connect to GitHub, you can add your SSH key to the ssh-agent.