/usr/share/applications/tuxcards.desktop is in tuxcards 2.2.1-0ubuntu2.
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 9 10 | [Desktop Entry]
Version=1.0
Name=TuxCards
GenericName=Note and Idea Manager
Comment=hierarchical notebook to enter and manage notes and ideas
Exec=tuxcards %f
Terminal=false
Icon=lo32-app-tuxcards
Type=Application
Categories=Application;Utility;
|