Abaixo estou listando algumas teclas de atalho para o Mac OS X 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 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 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 (Assigned in Keyboard & Mouse preferences)     Show Package Contents (of selected file in Mac OS X 10.5 or later only). To create this contextual menu shortcut, open Keyboard & Mouse preferences in Mac OS X 10.5, click Keyboard Shortcuts, click the "+" button, choose Finder.app as the Application, and type "Show Package Contents" (exactly), and set whichever shortcut you want, such as Command-Control-S. 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 (Mac OS X 10.2.8 or earlier), Add to Sidebar (Mac OS X 10.3 or later—use Shift-Command-T for 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 Command-Space     Open Spotlight (Mac OS X 10.4 or later) Command-esc     Front Row Activates Front Row for certain Apple computers Universal Access and VoiceOver Keyboard shortcut     Description Option-Command-8     Turn on Zoom Option-Command-+ (plus)     Zoom in Option-Command-- (minus)     Zoom out Control-Option-Command-8     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) Command-F5 or fn-Command-F5     Turn VoiceOver on or off (Mac OS X 10.4 or later) Control-Option-F8 or fn-Control-Option-F8     Open VoiceOver Utility (Mac OS X 10.4 or later) Control-Option-F7 or fn-Control-option-F7     Display VoiceOver menu (Mac OS X 10.4 or later) Control-Option-; or fn-Control-option-;     Enable/disable VoiceOver Control-Option lock (Mac OS X 10.4 or later) 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) Command-`     Cycle through windows in application or Finder (if more than one window is open) Function-Delete (portables only--PowerBook, iBook, MacBook, MacBook Pro)     Forward Delete (delete the character to the right of your cursor)