/usr/share/applications/gretl.desktop is in gretl-common 1.9.6-1build1.
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]
Name=gretl
Comment=Econometrics program
Exec=gretl %f
Icon=gretl.xpm
Terminal=0
Type=Application
Categories=Application;Science;Econometrics
|