def enable_service(self, service_name):
    cmd = ['/opt/nedge/neadm/neadm', 'service', 'enable', service_name]
    if (not self.is_service_exist(service_name)):
        print('enable_service: Service {} does not exist'.format(service_name))
        return
    if (not self.is_service_enabled(service_name)):
        self.exec_cmd('enable_service', cmd)
    else:
        print('enable_service: Service {} already enabled'.format(service_name))
def enable_service(self, service_name):
    cmd = ['/opt/nedge/neadm/neadm', 'service', 'enable', service_name]
    if (not self.is_service_exist(service_name)):
        print('enable_service: Service {} does not exist'.format(service_name))
        return
    if (not self.is_service_enabled(service_name)):
        self.exec_cmd('enable_service', cmd)
    else:
        print('enable_service: Service {} already enabled'.format(service_name))