Permanent modification to desktop shortcut [debian]
 

I edit /usr/share/applications/chromium.desktop and modify one line as Exec=/usr/bin/chromium %U --force-device-scale-factor=1.5 to use it more comfortably with my high dpi screen.

However this file reverts to its original state from time to time. I don't know its reason, maybe it happens when Chromium is updated.

How can I make this change permanent? Can I use a custom desktop shortcut as default chromium launcher? How?

I use debian 9 stable with Dash to Dock extension of Gnome.

Permissions, perhaps?

I prefer to make a custom shortcut instead of changing permissions.

^ this.

1. copy it over from /usr/share/applications to ~/.local/share/applications
2. make your mods

if you don't change its name i think it will just override the one in /usr/share/applications - if not, rename it and use it instead.