In Windows you can access the menu of an application by pressing Alt. From what I read the same is supposed to be true in KDE. However how can I access the Menu via in hotkey when I use Gnome?
Its the same hotkey in both Unity and Gnome-shell
In Unity, press and hold Alt to display the Global menu - then press the corresponding shortcut key - for example Alt+F
In Gnome-Shell - likewise, use the same key-combination.