SSH

Check for existing keys

ls -al ~/.ssh

Generate a new key

ssh-keygen -t ed25519 -C "your_email@example.org" # Recommended
ssh-keygen -t rsa -b 4096 -C "your_email@example.org" # For legacy systems

Add your key to the ssh-agent

eval "$(ssh-agent -s)"
ssh-add ~/.ssh/<Private key file>