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

[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:

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

[d3r]

@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.

[pauabaer]

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