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    [Solved]How to start a python script @reboot?

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    • P Offline
      pauabaer
      last edited by pauabaer

      Hi guys.
      i have a python script for my PIR-Sensor to turn on/ off my monitor. But i dont get this one started on reboot. how can i do this?
      i know there exists a pir-module, but this one i didnt get running yet.

      i need your help! :)
      thanks so far

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      • cowboysdudeC Offline
        cowboysdude Module Developer
        last edited by cowboysdude

        https://github.com/paviro/MMM-PIR-Sensor

        It’s a module… not sure how to use it but there you go :) Read the docs should tell you how

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        • P Offline
          pauabaer
          last edited by pauabaer

          It is the module I mentioned. Yesterday I thought I can not set this module up. But now it seems working.

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          • P Offline
            pauabaer
            last edited by

            It does not work at all. At least not the way i hoped.

            see here: https://forum.magicmirror.builders/topic/2468/mmm-pir-sensor-delay

            so i really like to get the python-autostart working. any help?

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            • D Offline
              d3r
              last edited by d3r

              Look into cron.
              [Cron](https://thepihut.com/blogs/raspberry-pi-tutorials/34930820-running-things-regularly-cron

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              • P Offline
                pauabaer
                last edited by

                thanks so far.
                i have already put this as cron: @reboot sudo /usr/bin/python /home/pi/monitor.py &
                but nothing happens

                when i want to start this, i will get this message:
                /etc/init.d/cron restart
                […] Restarting cron (via systemctl): cron.serviceFailed to restart cron.service: Access denied
                failed!
                So what can i do now?

                D 1 Reply Last reply Reply Quote 0
                • D Offline
                  d3r @pauabaer
                  last edited by

                  @pauabaer It’s easier to just make your python code executable. Then you can just start it with cron with
                  @reboot /home/pi/monitor.py

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                  • P Offline
                    pauabaer
                    last edited by

                    Two questions:

                    1. how do i make it executable?
                    2. when the script is executable, the problem with the failure is still existing, isn’t it?
                    D 1 Reply Last reply Reply Quote 0
                    • D Offline
                      d3r @pauabaer
                      last edited by

                      @pauabaer To make the code executable:

                      1. Add #!/usr/bin/python3 to the top of your code.(1st line)
                      2. open terminal and type sudo chmod +x /home/pi/monitor.py (this will make your code executable. You can check that it’s executable by typing “./monitor.py” You code should run.

                      Then you can add the line @reboot /home/pi/monitor.py to the crontab.

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                      • P Offline
                        pauabaer
                        last edited by

                        Ok. Thanks. I made these two steps and i can see via htop that the script is running.

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