Edit the file /etc/rc.local with your favorite editor. In this case we want to execute the python script myscript.py. You must be root to do this. Add the line /usr/bin/python /home/pi/myscript.py& before the exit 0 line in the file. Make sure to use absolute paths
sudo nano /etc/rc.local
#!/bin/sh -e## rc.local## This script is executed at the end of each multiuser runlevel.# Make sure that the script will "exit 0" on success or any other# value on error.## In order to enable or disable this script just change the execution# bits.## By default this script does nothing.# Print the IP address_IP=$(hostname -I) || trueif [ "$_IP" ]; thenprintf "My IP address is %s\n" "$_IP"fi#Add your command here/usr/bin/python /home/pi/myscript.py &exit 0
First we need to create a unit file in the folder /etc/systemd/system/ we name it myscript.service. In this case we want to execute the python script myscript.py. You have to be root to create this file.
sudo nano /etc/systemd/system/myscript.service
[Unit]Description=Print shipping labels from barcode idsAfter=network.target[Service]ExecStart=/usr/bin/python /home/pi/myscript.pyRestart=alwaysUser=pi[Install]WantedBy=multi-user.target
To enable and start the service:
sudo systemctl enable myscript.servicesudo systemctl start myscript.service