Creates the service file /usr/lib/systemd/system/rsyncd.service [Unit]Description= synchronize and backup service.After=syslog.target [Service].ExecStart=/bin/rsyncd.OOMScoreAdjust=-500 [Install].WantedBy=multi-user.target Then it installs the service by executing the following commands: ln -s '/lib/systemd/system/rsyncd.service' '/etc/systemd/system/multi-user.target.wants /rsyncd.service' systemctl daemon-reload  The running systemd process determines, which option will be used to register the Trojan in autorun