Hi guys,

I noticed that the traditional "show desktop" button in the task bar of GNOME is gone since 3.x version. This is extremely inconvenient when we want to see the files in our desktop with multiple windows are opening. However, I found a gnome-shell-extension called "minimize all" which can minimize all open windows and show us the desktop. Our conveniences are back with this useful tool.

You can obtain it from here:

Code:
https://extensions.gnome.org/extension/760/minimize-all/
The version 3.20 works fine under my SLED 12 SP3 x64.

enjoy it.