/usr/share/dbus-1/system-services/com.ubuntu.SystemService.service is in ubuntu-system-service 0.2.2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | [D-BUS Service]
Name=com.ubuntu.SystemService
Exec=/usr/lib/system-service/system-service-d
User=root
|