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The command "Super + D" is a keyboard shortcut used in various operating systems, including Windows and Linux. Here's the explanation of what it does in different contexts:
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Windows operating system: On Windows, the "Super" key refers to the Windows key (usually located between the Ctrl and Alt keys on the keyboard). When you press "Super + D" simultaneously, it triggers a command to show or hide the desktop. This means that all open windows and applications will be minimized, revealing the desktop and any icons or files placed on it. If you press "Super + D" again, it will restore all the previously minimized windows and applications.
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Ubuntu/Linux operating system: In Ubuntu or other Linux distributions that use the GNOME desktop environment, the "Super" key usually refers to the key with the Windows logo or sometimes the Command key on a Mac keyboard. On Ubuntu, pressing "Super + D" simultaneously triggers the "Minimize/Show desktop" action. This behaves similarly to the Windows counterpart, where it minimizes all windows and applications to reveal the desktop. Pressing the combination again will restore the windows back to their previous state.
To summarize, "Super + D" is a keyboard shortcut used to quickly show or hide the desktop, depending on the operating system you are using.