https://raspberrypi.stackexchange.com/questions/62533/how-can-i-reduce-the-writing-to-log-files/62536#62536
https://raspberrypi.stackexchange.com/questions/62533/how-can-i-reduce-the-writing-to-log-files/62536#62536
   ***   Schreibzugriffe auf SD analysieren:
https://domoticproject.com/extending-life-raspberry-pi-sd-card/