/usr/share/applications/nemo-autostart.desktop is in nemo 3.2.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | [Desktop Entry]
Type=Application
Name=Nemo
Comment=Start Nemo desktop at log in
Exec=nemo -n
OnlyShowIn=X-Cinnamon;
AutostartCondition=GSettings org.nemo.desktop show-desktop-icons
NoDisplay=true
|