gnome-shell-extension-show-desktop: gnome-shell-extension-show-desktop ( Show-desktop-button ) 
gnome-shell-extension-show-desktop:
gnome-shell-extension-show-desktop: A button that hide/show all the open windows on desktop.
gnome-shell-extension-show-desktop: 
gnome-shell-extension-show-desktop: 
gnome-shell-extension-show-desktop:
gnome-shell-extension-show-desktop:
gnome-shell-extension-show-desktop:
gnome-shell-extension-show-desktop:
gnome-shell-extension-show-desktop: https://github.com/amivaleo/Show-Desktop-Button
gnome-shell-extension-show-desktop: