/usr/share/cinnamon-session/sessions/cinnamon.session is in cinnamon-common 3.6.7-8ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | [Cinnamon Session]
Name=Cinnamon
RequiredComponents=cinnamon;cinnamon-screensaver;nemo-autostart;cinnamon-killer-daemon;
DesktopName=X-Cinnamon
|