/usr/share/dbus-1/system-services/com.ubuntu.WhoopsiePreferences.service is in whoopsie-preferences 0.19.
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.WhoopsiePreferences
Exec=/usr/bin/whoopsie-preferences
User=root
|