Mac OS X Keyboard Shortcuts

Startup
Keystroke Description
Press X during startup Force Mac OS X startup
Press Option-Command-Shift-Delete
during startup
Bypass primary startup volume and seek a different startup volume (such as a CD or external disk)
Press C during startup Start up from a CD that has a system folder
Press N during startup Attempt to start up from a compatible network server (NetBoot)
Press R during startup Force PowerBook screen reset
Press T during startup Start up in FireWire Target Disk mode
Press Shift during startup start up in Safe Boot mode and temporarily disable login items and non-essential kernel extension files (Mac OS X 10.2 and later)
Press Command-V during startup Start up in Verbose mode.
Press Command-S during startup Start up in Single-User mode (command line)
Finder window
Keyboard shortcut Description
Command-W Close Window
Option-Command-W Close all Windows
Command-Right Arrow Expand folder (list view)
Option-Command-Right Arrow Expand folder and nested subfolders (list view)
Command-Left Arrow Collapse Folder (list view)
Option-Command-Up Arrow Open parent folder and close current window
Menu commands
Keyboard shortcut Description
Shift-Command-Q Apple Menu
     Log out
Shift-Option-Command-Q Apple Menu
     Log out immediately
Shift-Command-Delete Finder Menu
     Empty Trash
Option-Shift-Command-Delete Finder Menu
     Empty Trash without dialog
Command-H Finder Menu
     Hide Finder
Option-Command-H Finder Menu
     Hide Others
Command-N File Menu
     New Finder window
Shift-Command-N File Menu
     New Folder
Command-O File Menu
     Open
Command-S File Menu
     Save
Shift-Command-S File Menu
     Save as
Command-P File Menu
     Print
Command-W File Menu
     Close Window
Option-Command-W File Menu
     Close all Windows
Command-I File Menu
     Get Info
Option-Command-I File Menu
     Show Attributes Inspector
Command-D File Menu
     Duplicate
Command-L File Menu
     Make Alias
Command-R File Menu
     Show original
Command-T File Menu
     Add to Favorites
Command-Delete File Menu
     Move to Trash
Command-E File Menu
     Eject
Command-F File Menu
     Find
Command-Z Edit Menu
     Undo
Command-X Edit Menu
     Cut
Command-C Edit Menu
     Copy
Command-V Edit Menu
     Paste
Command-A Edit Menu
     Select All
Command-1 View Menu
     View as Icons
Command-2 View Menu
     View as List
Command-3 View Menu
     View as Columns
Command-B View Menu
     Hide Toolbar
Command-J View Menu
     Show View Options
Command - [ Go Menu
     Back
Command - ] Go Menu
     Forward
Shift-Command-C Go Menu
     Computer
Shift-Command-H Go Menu
     Home
Shift-Command-I Go Menu
     iDisk
Shift-Command-A Go Menu
     Applications
Shift-Command-F Go Menu
     Favorites
Shift-Command-G Go Menu
     Goto Folder
Command-K Go Menu
     Connect to Server
Command-M Window Menu
     Minimize Window
Option-Command-M Window Menu
     Minimize All Windows
Command-? Help Menu
     Open Mac Help
Universal Access
Keyboard shortcut Description
Option-Command-* (asterisk) Turn on Zoom
Option-Command-+ (plus) Zoom in
Option-Command-- (minus) Zoom out
Control-Option-Command-* (asterisk) Switch to White on Black
Control-F1 Turn on Full Keyboard Access
When Full Keyboard Access is turned on, you can use the key combinations listed in the table below from the Finder.
Control-F2 Full Keyboard Access
     Highlight Menu
Control-F3 Full Keyboard Access
     Highlight Dock
Control-F4 Full Keyboard Access
     Highlight Window (active) or next window behind it
Control-F5 Full Keyboard Access
     Highlight Toolbar
Control-F6 Full Keyboard Access
     Highlight Utility window (palette)

The Universal Access preference pane allows you to turn on Mouse Keys. When Mouse Keys is on, you can use the numeric keypad to move the mouse. If your computer doesn't have a numeric keypad, use the Fn (function) key.

Mouse Keys
Keystroke Description
8 Move Up
2 Move Down
4 Move Left
6 Move Right
1, 3, 7, and 9 Move Diagonally
5 Press Mouse Button
0 Hold Mouse Button
. (period on keypad) Release Mouse Button (use after pressing 0)
Other Commands
Keystroke Description
Option-Command-D Show/Hide Dock
Command-Tab Switch application
tab Highlight next item
Command-Up Arrow Move up one directory
Command-Down Arrow Move down one directory
Page Up or Control-Up Arrow Move up one page
Page Down or Control-Down Arrow Move down one page
Option-Drag Copy to new location
Option-Command-Drag Make alias in new location
Command-Drag Move to new location without copying
Shift-Command-C Show Colors palette in application
Command-T Show Font palette in application
Command-Shift-3 Take a picture of the screen
Command-Shift-4 Take a picture of the selection
Command-Shift-4, then press Control while selecting Take a picture of the screen, place in Clipboard
Command-Shift-4, then Spacebar Take a picture of the selected window
Option-Command-esc Force Quit
Control-Eject Restart, Sleep, Shutdown dialog box
Control-Command-Eject Quit all applications and restart
Option-Command-Eject or
Option-Command-Power
Sleep
Command-click window toolbar button (upper right corner) Cycle through available views for the window's toolbar (dependant on the nature of the Finder or application window)
http://www.uark.edu/compserv/softsys/macintosh/macos/osx/osxkeybd.html