/usr/share/app-install/desktop/lyx:lyx.desktop is in app-install-data 14.04.0.
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 11 12 13 14 15 16 17 18 19 20 | [Desktop Entry]
X-AppInstall-Package=lyx
X-AppInstall-Popcon=1379
X-AppInstall-Section=universe
Version=1.0
Type=Application
Name=LyX Document Processor
GenericName=Document Processor
Comment=High level LaTeX frontend
Exec=lyx %F
TryExec=lyx
Icon=lyx
StartupNotify=false
StartupWMClass=Lyx
Terminal=false
Categories=Office;WordProcessor;Qt;
MimeType=text/x-lyx;application/x-lyx;
X-Ubuntu-Gettext-Domain=app-install-data
|