def pre_save(self, model_instance, add):
        return getattr(model_instance, self.attname)
Attempt to detect if a remote system is a systemd one or not
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/db/models/fields/__init__.py/Field.pre_save--crossover with--dataset/ETHPy150Open ceph/ceph-deploy/ceph_deploy/util/system.py/is_systemd