[Unit] Description=Apply Realtime-Kernel specific settings according to a profile After=multi-user.target sound.target ConditionKernelCommandLine=systemd.setenv=REALTIME=true ConditionFileIsExecutable=/usr/bin/tuna [Service] Type=oneshot ExecStart=/usr/bin/rts %i RemainAfterExit=true [Install] WantedBy=multi-user.target