/usr/share/mate/applications/software-properties-gtk.desktop is in ubuntu-mate-default-settings 18.04.17.
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 | [Desktop Entry]
Name=Software & Updates
GenericName=Software & Updates
Comment=Configure the sources for installable software and updates
Keywords=Drivers;Repositories;Repository;PPA;
Exec=software-properties-gtk
Icon=software-properties
Terminal=false
X-MultipleArgs=false
Type=Application
NotShowIn=GNOME;
Categories=System;Settings;
X-GNOME-Settings-Panel=software-properties
X-Unity-Settings-Panel=software-properties
MimeType=text/x-apt-sources-list;
X-KDE-SubstituteUID=true
X-Ubuntu-Gettext-Domain=software-properties
|