How to add crontab job

Add crontab job

sudo crontab -e

Choose "1" then press Enter

Add the command line you want to execute at the end of the file that reads like this:

@reboot python3 /home/pi/x-c1/fan.py

PS:

1. @reboot python /home/pi/x-c1/fan.py is a sample command, You MUST to modify it according to your needs.

2. Please make sure that the file path and file name are correct

Save and exit (CTRK + O and ENTER to save it). In nano editor, you do that by hitting CTRL + X, answering Y and hitting Enter when prompted.

Please run 'sudo reboot' to reboot device to enable crontab job.

Remove crontab job

sudo crontab -e

Then remove the command line by yourself.