/lib/systemd/system/realmd.service is in realmd 0.16.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | [Unit]
Description=Realm and Domain Configuration
Documentation=man:realmd(8)
[Service]
Type=dbus
BusName=org.freedesktop.realmd
ExecStart=/usr/lib/realmd/realmd
|