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

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

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

pauabaer

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

pauabaer

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?

d3r

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

pauabaer

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?

d3r

@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

pauabaer

Two questions:

how do i make it executable?
when the script is executable, the problem with the failure is still existing, isn’t it?

d3r

@pauabaer To make the code executable:

Add #!/usr/bin/python3 to the top of your code.(1st line)
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.

pauabaer

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