Files located in /etc/needrestart/restart.d are used for services
requiring a special procedure for restarting instead of
systemctl/service command.

Needrestart uses executable files matching the complete service
names. If the host uses systemd the service names have '.service' as a
suffix (dbus vs. dbus.service). Needrestart uses the systemctl/service
command if no executable file is available to override the default
behavior.

The environment variable NR_VERBOSE will be set to '1' if the
executable should be verbose.