#This is a work in progress, you might not like what it does...

read -p "Enter email for SSH comment : " email_to_use
email_to_use=${email_to_use:-}

read -p "Enter name for ssh key : " ssh_key_filename
ssh_key_filename=${ssh_key_filename:-rsa_two}

ssh-keygen -q -t rsa -b 4096 -C "$email_to_use" -f ~/.ssh/$ssh_key_filename -P ""

config_file_key=IdentityFile
new_config_file_value="~\/.ssh\/$ssh_key_filename/"

sed -i "s/\(^  $config_file_key\).*/\1 $new_config_file_value" ~/.ssh/config

echo ""
cat ~/.ssh/$ssh_key_filename.pub
echo ""
echo "Copy the above text to GitHub as your public key. This VM will then be able to access your repositories."