vegbien_dest: Get bien_password by searching relative to $self, which we now have a way to get in a bash script (${BASH_SOURCE0}), rather than requiring the caller to set it. Provide usage error if run without initial ".".
vegbien_dest: Get bien_password by searching relative to $self, which we now have a way to get in a bash script (${BASH_SOURCE0}), rather than requiring the caller to set it. Provide usage error if run without initial ".".