[CentOS] How to add an application icon?

On Sat, 05 Oct, 2019 at 15:18:38 +0300, Александр Кириллов wrote:
> How to add an application icon to gnome 3 classic desktop on centos 8?
> TIA

Using firefox as an example,

cp /usr/share/applications/firefox.desktop $(xdg-user-dir DESKTOP)/

or

ln -s /usr/share/applications/firefox.desktop $(xdg-user-dir DESKTOP)/