basically /etc/rc.local has been deprecated and is not used anymore to start service during boot process. Nowadays this is done by systemd. Even Raspberry Pi Foundation is not recommending the usage https://www.raspberrypi.org/documentation/linux/usage/rc-local.md
You have following options to get a script running during boot
Hi, I am trying to run a script in Autostart option on Dietpi. For Raspberry Pi Buster the script used in /home/pi/config/lxsession/LXDE-pi/autostart @lxterminal -e “/home/pi/Python_Code/bootup.sh”
However this will not work on Dietpi autostart config. What would be the correct command to run the file in /root/Python_code/bootup.sh.
Thanks for your help.
Some more clarification would be needed. What exactly you are trying to do? Do you like to execute thinks automatically while starting a desktop? Next to this, user pi is not exiting on DietPi. Hence, /home/pi/ did not exist as well.