How to run mavproxy autostart?

Hello, community,
Now I testing nano+pixhawk via UART2
No problems with connecting but how to run mavproxy autostart?
In RPi change local.rc file works ok …

In ubuntu you cannot use rc.local anymore.
You need to create a systemd script to place in /etc/systemd/system like described here:
https://askubuntu.com/questions/919054/how-do-i-run-a-single-command-at-startup-using-systemd?answertab=votes#tab-top

PS: you need to do the same with Raspberry Pi

Thank you! I’ll try it