Command + D: Duplicate selected file(s).Option + Shift + Command: Log out of your macOS user account without confirming.Shift + Command + Q: Log out of your macOS user account after confirming.Control + Command + Q: Lock your Mac screen.Control + Option + Command + Power button: Quit all open apps, choose whether you want to keep unsaved changes, then Shut Down your Mac.Use this only if your Mac is irresponsive. Note that unsaved documents and changes will likely be lost.

Control + Command + Power button: Force restart your Mac.Control + Power button: Bring up the Restart/Sleep/Shut Down prompt.Control + Shift + Power button: Put your display(s) to sleep.Option + Command + Power button: Put your Mac to sleep.This is particularly useful when your Mac is irresponsive. Press and hold for longer to force your Mac to turn off.Press and hold for 1.5 seconds to put your Mac to sleep.Press to turn on your Mac if it's off or to wake it if it's asleep.Please note that some of the shortcuts below don't apply to Macs with Touch ID Power buttons. Command + comma: Open the preferences of the front app.Shift + Command + N: Create a new folder in Finder.Shift + Command + 5: Open the Screenshot app to take a screenshot or a screen recording.Command + Tab: Switch to the next most recently used (open) app.Space bar: Use Quick Look on a selected item.Control + Command + F: Switch to a full screen window, if the app supports it.Control + Command + Space bar: Bring up the Character Viewer to insert emoji and other special characters.Option + Command + Space bar: Perform a Spotlight search in a Finder window.Command + Space bar: Bring up or close Spotlight Search.This is particularly useful when an app isn't responsive. Option + Command + Esc: Force quit an app.Option + Command + W: Close all windows of the front app.

Command + T: Open a new tab of the front app.Command + P: Print the opened document.If none are selected, bring up a prompt to choose a file to open. Option + Command + M: Minimize all windows of the front app.Command + M: Minimize the front window.Option + Command + H: Hide all apps except for the front window.Command + H: Hide the windows of the front app.Shift + Command + G: Find previous occurrence of a found item.Command + G: Find the next occurrence of a found item.Command + F: Find items in an open document or open a new Find window.Command + A: Select all items in a window, document, or text field.Shift + Command + Z: Redo last undone command.Command + V: Paste clipboard items into current text field, document, window, or app.This also works for files in Finder, not only text and photos.

Command + C: Copy selected item to clipboard.

Command + X: Cut selected item and copy it to clipboard.

Mac shortcut to shutdown