1. General Shortcut Keys
Alt + F1
Opens the Applications Menu.
Alt + F2
Displays the Run Application dialog.
Print Screen
Takes a screenshot.
Alt + Print Screen
Takes a screenshot of the window that has focus.
Ctrl + Alt + right arrow
Switches to the workspace to the right of the current workspace.
Ctrl + Alt + left arrow
Switches to the workspace to the left of the current workspace.
Ctrl + Alt + up arrow
Switches to the workspace above the current workspace.
Ctrl + Alt + down arrow
Switches to the workspace below the current workspace.
Ctrl + Alt + d
Minimizes all windows, and gives focus to the desktop.
F1
Starts the online help browser, and displays appropriate online Help.
2. Window Shortcut Keys
Alt + Tab
Switches between windows. When you use these shortcut keys, a list of windows that you can select is displayed. Release the keys to select a window.
Alt + Esc
Switches between windows in reverse order. Release the keys to select a window.
F10
Opens the first menu on the left side of the menubar.
Alt + spacebar
Opens the Window Menu.
Arrow keys
Moves the focus between items in a menu.
Return
Chooses a menu item.
Esc
Closes an open menu.
Ctrl + Alt + right arrow
Switches to the workspace to the right of the current workspace.
Ctrl + Alt + left arrow
Switches to the workspace to the left of the current workspace.
Ctrl + Alt + up arrow
Switches to the workspace above the current workspace.
Ctrl + Alt + down arrow
Switches to the workspace below the current workspace.
Ctrl + Alt + d
Minimizes all windows, and gives focus to the desktop.
When a window has focus, you can increase or decrease the size of the window:
Alt + F8
Start the resize operation.
Arrow keys
Resize the window in the direction of the arrow key.
Spacebar
Complete the resize operation, leaving the window at the current size.
Esc
Cancel the resize operation, restoring the window to its original size.
Move windows between workspaces:
Ctrl + Shift + Alt + Arrow key
Use the arrow keys to move windows between workspaces
3. Panel Shortcut Keys
Ctrl + Alt + Tab
Switches the focus between the panels and the desktop. When you use these shortcut keys, a list of items that you can select is displayed. Release the keys to select an item.
Ctrl + Alt + Esc
Switches the focus between the panels and the desktop. Release the keys to select an item.
Ctrl + F10
Opens the popup menu for the selected panel.
Tab
Switches the focus between objects on a panel.
Return
Chooses the selected panel object or menu item.
Shift + F10
Opens the popup menu for the selected panel object.
Arrow keys
Moves the focus between items in a menu. Moves the focus between interface items in an applet also.
Esc
Closes an open menu.
F10
Opens the Applications menu from the Menu Bar, if the Menu Bar is in a panel.
4. Application Shortcut Keys
Shortcut Keys
Command
Ctrl + N
New
Ctrl + X
Cut
Ctrl + C
Copy
Ctrl + V
Paste
Ctrl + Z
Undo
Ctrl + S
Save
Ctrl + Q
Quit
Ref: https://community.linuxmint.com/tutorial/view/45