display manager startup script sddm

Pretty simple question, what file do I edit to add something to the startup script for KDE (display manager is SDDM)

-ie where is the SDDM startup script?

What do you want to achieve?

want to add this to the startup after x starts

x11vnc -wait 50 -noxdamage -passwd PASSWORD -display :0 -forever -o /var/log/x11vnc.log -bg

Are you now talking about starting X, starting the Display Manager, or starting the Desktop? :question:

any would probably work, just want to start x11vnc after the display manager starts…

Then, if for all users put a script in /etc/xdg/autostart, if only for your user in ~/.config/autostart