Checking for existing SSH keys
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:
Generating a new SSH key
ssh-keygen -t rsa -b 4096 -C "firstname.lastname@example.org"
Adding or changing a passphrase
ssh-keygen -p # Start the SSH key creation process Enter file in which the key is (/Users/you/.ssh/id_rsa): [Hit enter] Key has comment '/Users/you/.ssh/id_rsa' Enter new passphrase (empty for no passphrase): [Type new passphrase] Enter same passphrase again: [One more time for luck] Your identification has been saved with the new passphrase.