OS X: Keyboard shortcut reference list

(Reference from Apple)

It is always hard to find the shortcut when you need it especially for non-heavy Mac user like myself.
Let's have it here too.

A modifier key is a part of many keyboard shortcuts. A modifier key alters the way other keystrokes or mouse/trackpad clicks are interpreted by OS X. Modifier keys include: Command, Shift, Option, Control, Caps Lock, and the fn key. These keys are represented by special symbols when you see them in menus and other parts of OS X:

⌘	Command key
⌃	Control key
⌥	Option key
⇧	Shift Key
⇪	Caps Lock
fn	Function Key

When the fn key is used with the top row of keys on your keyboard, it makes them perform a different function. For example, if a keyboard shortcut is Control-F2, you press fn-Control-Brightness on your keyboard. If you look closely at the Brightness key at the top of your keyboard, there is an F2 symbol indicating that this key works as a function key (F2 or function 2) when you hold fn on the keyboard.

If you use a non-Apple keyboard that includes a Windows key, the Alt key is the same thing as pressing Option, and the Windows key is the same thing as Command. You can change how these keys are interpreted from theKeyboard pane of System Preferences. 

Startup shortcuts

Use these key combinations to change how your computer starts up. Press and hold the key or combination of keys immediately after starting your Mac until the expected function occurs or appears. For example, press and hold the Option key during startup until the Startup Manager appears.

Note: If you're using a keyboard manufactured by someone other than Apple, the Alt key is usually the same key as the Option key. If this modifier doesn't appear to work, try using an Apple keyboard instead.

Key or key combination	What it does
Option or Alt	Display all startup volumes (Startup Manager)
Shift	Start up in Safe Mode
Left Shift	Prevent automatic login
C	Start from bootable media (DVD, CD, USB thumb drive)
T	Start up in Target disk mode
N	Start from a NetBoot server
X	Force OS X startup (when non-OS X startup volumes are available)
D	Use Apple Hardware Test
Command-R	Use OS X Recovery (OS X Lion or later)
Command-V	Start up in Verbose Mode
Command-S	Start up in Single User Mode
Command-Option-P-R	Reset NVRAM / parameter RAM
Hold down the Media Eject (⏏) key or F12 key, or mouse or trackpad button	Eject removable discs

Sleep and shut down shortcuts 

Use these key combinations after your Mac has started up to sleep, shut down, or restart your computer.

Key or key combination	What it does
Power button	Tap to power on. Once powered on, tap the power button to wake or sleep in OS X Mavericks.
Hold down the power button for 1.5 seconds	Show the restart / sleep / shutdown dialog in OS X Mavericks
Hold down the power button for 5 seconds	Force the Mac to power off
Command-Control-power button	Force the Mac to restart
Control-Media Eject (⏏)	Show restart / sleep / shutdown dialog
Command-Option-Media Eject (⏏)	Put the computer to sleep
Command-Control-Media Eject (⏏)	Quit all applications (after giving you a chance to save changes to open documents), then restart the computer
Command-Option-Control-Media Eject (⏏)	Quit all applications (after giving you a chance to save changes to open documents), then shut down the computer
Shift-Control-Media Eject (⏏)	Put all displays to sleep

Taking screenshots

Use these shortcuts to take a picture of what you see on your screen. You can also use Grab to take screenshots, an app located in the Utilities folder.

Key combination	What it does
Command-Shift-3	Capture the screen to a file
Command-Shift-Control-3	Capture the screen to the Clipboard
Command-Shift-4	Capture a selection of the screen to a file, or press the spacebar to capture just a window
Command-Shift-Control-4	Capture a selection of the screen to the Clipboard, , or press the spacebar to capture just a window

Application and other OS X shortcuts

These keyboard shortcuts work in most apps.

Key combination	What it does
Command-Space bar	Show or hide the Spotlight search field (if multiple languages are being used simultaneously, this shortcut may rotate through enabled script systems instead)
Command-Option-Space bar	Show the Spotlight search results window (if multiple languages are installed, may rotate through keyboard layouts and input methods within a script)
Command-Tab	Move forward to the next most recently used application in a list of open applications
Command-Shift-Tab	Move backward through a list of open applications (sorted by recent use)
Shift-Tab	Navigate through controls in a reverse direction
Control-Tab	Move focus to the next grouping of controls in a dialog or the next table (when Tab moves to the next cell)
Shift-Control-Tab	Move focus to the previous grouping of controls
Option-Media Eject (⏏)	Eject from secondary optical media drive (if one is installed)
Command-F1	Toggle "Mirror Displays" on multi-monitor configurations
Command-F2	Toggle Target Display Mode
Command-F3	Show Desktop
Command-F5	Toggle VoiceOver On or Off
Option-F1 or Option-F2	Opens "Displays" System Preference
Option-F3 or Option-F4	Open Mission Control preferences
Option-F10 or -F11 or -F12	Open Sound preferences
Shift-Control-F6	Move focus to the previous panel
Control-F7	Temporarily override the current keyboard access mode in windows and dialogs
Control-F8	Move to the status menus in the menu bar
Command-Accent (`)	Activate the next open window in the frontmost application
Command-Shift-Accent (`)	Activate the previous open window in the frontmost application
Command-Option-Accent (`)	Move focus to the window drawer
Command-Minus (–)	Decrease the size of the selected item
Command-{	Left-align a selection
Command-}	Right-align a selection
Command-|	Center-align a selection
Command-Colon (:)	Display the Spelling and Grammar window
Command-Semicolon (;)	Find misspelled words in the document
Command-Comma (,)	Open the front application's preferences window
Command-Option-Control-Comma (,)	Decrease screen contrast
Command-Option-Control-Period (.)	Increase screen contrast
Command-Question Mark (?)	Open the application's help in Help Viewer
Command-Option-/	Turn font smoothing on or off
Command-Shift-=	Increase the size of the selected item
Command-A	Highlight every item in a document or window, or all characters in a text field
Command-B	Boldface the selected text or toggle boldfaced text on and off
Command-C	Copy the selected data to the Clipboard
Command-Shift-C	Display the Colors window
Command-Option-C	Copy the formatting settings of the selected item and store on the Clipboard
Command-Option-V	Paste (apply) the formatting settings from the Clipboard to the selected item
Command-Option-D	Show or hide the Dock
Command-Control-D	Display the definition of the selected word
Command-D	Selects the Desktop folder in Open and Save dialogs or selects Don't Save in dialogs that contain a Don't Save button
Command-Delete	Selects Don't Save in dialogs that contain a Delete or Don't Save button
Command-E	Use the selection for a find
Command-F	Open a Find window
Command-Option-F	Move to the search field control
Command-G	Find the next occurrence of the selection
Command-Shift-G	Find the previous occurrence of the selection
Command-H	Hide the windows of the currently running application
Command-Option-H	Hide the windows of all other running applications
Command-I	Italicize the selected text or toggle italic text on or off
Command-Option-I	Display an inspector window
Command-M	Minimize the active window to the Dock
Command-Option-M	Minimize all windows of the active application to the Dock
Command-N	Create a new document in the frontmost application
Command-O	Display a dialog for choosing a document to open in the frontmost application
Command-P	Display the Print dialog
Command-Shift-P	Display a dialog for specifying document parameters (Page Setup)
Command-Q	Quit the frontmost application
Command-S	Save the active document
Command-Shift-S	Display the Save As dialog or duplicate the current document
Command-T	Display the Fonts window
Command-Option-T	Show or hide a toolbar
Command-U	Underline the selected text or turn underlining on or off
Command-V	Paste the Clipboard contents at the insertion point
Command-Option-V	Apply the style of one object to the selected object (Paste Style)
Command-Shift-Option-V	Apply the style of the surrounding text to the inserted object (Paste and Match Style)
Command-Control-V	Apply formatting settings to the selected object (Paste Ruler)
Command-W	Close the frontmost window
Command-Shift-W	Close a file and its associated windows
Command-Option-W	Close all windows in the application without quitting it
Command-X	Remove the selection and store in the Clipboard
Command-Z	Undo previous command (some applications allow for multiple Undos)
Command-Shift-Z	Redo previous command (some applications allow for multiple Redos)
Control-Space bar	Toggle between the current and previous input sources
Option-Control-Space bar	Toggle through all enabled input sources
Command-Option-esc	choose an application to Force Quit
Command-Shift-Option-Esc (hold for three seconds)	Force Quit the front-most application
Command-Left Bracket ([)	Previous browser webpage
Command-Right Bracket (])	Next browser webpage

Text selection shortcuts

Use these key combinations when editing text in a field or document.

fn-Delete	Forward Delete (on a portable Mac's built-in keyboard)
fn-Up Arrow	Scroll up one page (same as Page Up key)
fn-Down Arrow	Scroll down one page (same as Page Down key)
fn-Left Arrow	Scroll to the beginning of a document (same as Home key)
fn-Right Arrow	Scroll to the end of a document (same as End key)
Command-Right Arrow	Move the text insertion point to the end of the current line
Command-Left Arrow	Move the text insertion point to the beginning of the current line
Command-Down Arrow	Move the text insertion point to the end of the document
Command-Up Arrow	Move the text insertion point to the beginning of the document
Option-Right Arrow	Move the text insertion point to the end of the next word
Option-Left Arrow	Move the text insertion point to the beginning of the previous word
Option-Delete	Delete the word that is left of the cursor, as well as any spaces or punctuation after the word
Command-Shift-Right Arrow	Select text between the insertion point and the end of the current line (*)
Command-Shift-Left Arrow	Select text between the insertion point and the beginning of the current line (*)
Command-Shift-Up Arrow	Select text between the insertion point and the beginning of the document (*)
Command-Shift-Down Arrow	Select text between the insertion point and the end of the document (*)
Shift-Left Arrow	Extend text selection one character to the left (*)
Shift-Right Arrow	Extend text selection one character to the right (*)
Shift-Up Arrow	Extend text selection to the line above, to the nearest character boundary at the same horizontal location (*)
Shift-Down Arrow	Extend text selection to the line below, to the nearest character boundary at the same horizontal location (*)
Shift-Option-Right Arrow	Extend text selection to the end of the current word, then to the end of the following word if pressed again (*)
Shift-Option-Left Arrow	Extend text selection to the beginning of the current word, then to the beginning of the following word if pressed again (*)
Shift-Option-Down Arrow	Extend text selection to the end of the current paragraph, then to the end of the following paragraph if pressed again (*)
Shift-Option-Up Arrow	Extend text selection to the beginning of the current paragraph, then to the beginning of the following paragraph if pressed again (*)
Control-A	Move to beginning of line or paragraph
Control-B	Move one character backward
Control-D	Delete the character in front of the cursor
Control-E	Move to the beginning of a line or paragraph
Control-F	Move one character forward
Control-H	Delete the character behind the cursor
Control-K	Delete from the character in front of the cursor to the end of the line or paragraph
Control-L	Center the cursor or selection in the visible area
Control-N	Move down one line
Control-O	Insert a new line after the cursor
Control-P	Move up one line
Control-T	Transpose the character behind the cursor and the character in front of the cursor
Control-V	Move down

*Note: If no text is selected, the extension begins at the insertion point. If text is selected by dragging, then the extension begins at the selection boundary. Reversing the direction of the selection deselects the appropriate unit.

Accessibility

These keyboard shortcuts help you control your Mac with your keyboard or assistive devices.

Accessibility and VoiceOver keyboard commands

Key combination	What it does
Command-Option-F5	Display Accessibility Options
Command-F5 or fn-Command-F5	Turn VoiceOver on or off
Option-Control-F8 or fn-Option-Control-F8	Open VoiceOver Utility (if VoiceOver is on)
Option-Control-F7 or fn-Option-Control-F7	Display VoiceOver menu (if VoiceOver is on)
Option-Control-Semicolon (;)	Enable or disable VoiceOver
Command-Option-8	Turn Zoom on or off
Command-Option-Plus (+)	Zoom In
Command-Option-Minus (–)	Zoom Out
Command-Option-Control-8	Invert/revert the screen colors (OS X Lion or earlier)
Command-Option-Control-Comma (,)	Reduce contrast (OS X Lion or earlier)
Command-Option-Control-Period (.)	Increase contrast (OS X Lion or earlier)

Note: You may need to enable "Use all F1, F2, etc. keys as standard keys" in Keyboard preferences for the VoiceOver menu and utility to work.

Full keyboard access

Full keyboard access lets you use your keyboard to navigate and interact with items on the screen. Use these shortcuts to select and adjust controls such as text fields and sliders. This setting can be toggled by pressing Control-F7, or by selecting Full Keyboard Access from the Shortcuts pane of Keyboard preferences in System Preferences. 

Key combination	What it does
Tab	Move to the next control
Shift-Tab	Move to the previous control
Control-Tab	Move to the next control when a text field is selected
Arrow keys	Move to the adjacent item in a list, tab group, or menu or Move sliders and adjusters (vertical up and down arrows used to increase and decrease values)
Control-Arrow keys	Move to a control adjacent to the text field
Space bar	Select the highlighted menu item
Return or Enter	Click the default button or perform the default action
Esc	Click the Cancel button or Close a menu without choosing an item

You can navigate the menus in the menu bar without using a mouse or trackpad. To put the focus in the menu bar, press Control-F2 (fn-Control-F2 on portable keyboards). Then use the key combinations listed below.

Key combination	What it does
Left Arrow and Right Arrow	Move from menu to menu
Return	Open a selected menu
Up Arrow and Down Arrow	Move to menu items in the selected menu
Type the menu item’s name	Jump to a menu item in the selected menu
Return	Select a menu item

Accessibility - Mouse Keys

When Mouse Keys is turned on in Accessibility preferences, you can use the keyboard or numeric keypad keys to move the mouse pointer. 

Key combination	What it does
8 or numeric keypad 8	Move Up
K or numeric keypad 2	Move Down
U or numeric keypad 4	Move Left
O or numeric keypad 6	Move Right
J or numeric keypad 1	Move Diagonally Bottom Left
L or numeric keypad 3	Move Diagonally Bottom Right
7 or numeric keypad 7	Move Diagonally Top Left
9 or numeric keypad 9	Move Diagonally Top Right
I or numeric keypad 5	Press Mouse Button
M or numeric keypad 0	Hold Mouse Button
. (period key)	Release Hold Mouse Button

Finder shortcuts

Key combination	What it does
Command-A	Select all items in the front Finder window (or desktop if no window is open)
Command-Option-A	Deselect all items
Command-Shift-A	Open the Applications folder
Command-C	Copy selected item or text to the Clipboard
Command-Shift-C	Open the Computer window
Command-D	Duplicate selected item
Command-Shift-D	Open desktop folder
Command-E	Eject
Command-F	Find any matching Spotlight attribute
Command-Shift-F	Find Spotlight file name matches
Command-Option-F	Navigate to the search field in an already-open Spotlight window
Command-Shift-G	Go to Folder
Command-Shift-H	Open the Home folder of the currently logged-in user account
Command-Control-T	Add to Sidebar (OS X Mavericks)
Command-I	Get Info
Command-Option-I	Show Inspector
Command-Control-I	Get Summary Info
Command-Shift-I	Open iDisk
Command-J	Show View Options
Command-K	Connect to Server
Command-Shift-K	Open Network window
Command-L	Make alias of the selected item
Command-M	Minimize window
Command-Option-M	Minimize all windows
Command-N	New Finder window
Command-Shift-N	New folder
Command-Option-N	New Smart Folder
Command-O	Open selected item
Command-Shift-Q	Log Out
Command-Shift-Option-Q	Log Out immediately
Command-R	Show original (of alias)
Command-T	Add Finder tab (OS X Mavericks)
Command-Shift-T	Show or hide Finder tab (OS X Mavericks)
Command-Option-T	Hide or Show Toolbar in Finder windows
Command-Shift-U	Open Utilities folder
Command-V	Paste
Command-W	Close window
Command-Option-W	Close all windows
Command-X	Cut
Command-Option-Y	Slideshow (Mac OS X v10.5 or later)
Command-Z	Undo
Command-1	View as Icon
Command-2	View as List
Command-3	View as Columns
Command-4	View as Cover Flow (Mac OS X v10.5 or later)
Command-Comma (,)	Open Finder preferences
Command-Accent (`) (the Accent key above Tab key on a US English keyboard layout)	Cycle through open Finder windows
Command-Shift-Question Mark (?)	Open Mac Help
Command-Left Bracket ([)	Go to the previous folder
Command-Right Bracket (])	Go to the next folder
Command-Up Arrow	Open the folder that contains the current folder
Command-Control-Up Arrow	Open the folder that contains the current folder in a new window
Command-Down Arrow	Open highlighted item
Command-Shift-Up Arrow	Make the desktop active
Right Arrow (in List view)	Open the selected folder
Left Arrow (in List view)	Close the selected folder
Option-click the disclosure triangle (in List view)	Open all folders within the selected folder
Option–double-click	Open a folder in a separate window, closing the current window
Command–double-click	Open a folder in a separate window
Command-click the window title	See the folders that contain the current window
Command-Tab	Switch application–cycle forward
Command-Shift-Tab	Switch application–cycle backward
Command-Delete	Move to Trash
Command-Shift-Delete	Empty Trash
Command-Shift-Option-Delete	Empty Trash without confirmation dialog
Space bar (or Command-Y)	Quick Look (Mac OS X v10.5 or later)
Command key while dragging	Move the dragged item to another volume or location (the pointer changes while key is held)
Option key while dragging	Copy dragged item (the pointer changes while key is held)
Command-Option key combination while dragging	Make alias of dragged item (the pointer changes while key is held)