Set up an SSH key

ssh-keys.sh

# Generate public/private rsa key pair 
ssh-keygen

# Add the key to the ssh-agent
eval `ssh-agent`
ssh-add -K ~/.ssh/id_rsa

# Copy public key content
pbcopy < ~/.ssh/id_rsa.pub

# Verify configuration
ssh -T git@bitbucket.org

# So that your computer remembers your password each time it restarts, 
# open (or create) the ~/.ssh/config file and add these lines to the file:

# Host *
#  UseKeychain yes