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OS X Keyboard Shortcuts
Most Commonly Used (in no particular order)
ctrl + mouse click Emulates a right click (for all you one-button-mousers out there)
⌘ + F File Menu; Find
⌘ + Z Edit Menu; Undo
⌘ + X Edit Menu; Cut
⌘ + C Edit Menu; Copy
⌘ + V Edit Menu; Paste
⌘ + A Edit Menu; Select All
⌘ + W Close window
option + ⌘ + W Close all windows
⌘ + Q Quit program
⌘ + M Window Menu; Minimize window
option + ⌘ + M Window Menu; Minimize all windows
Finder Shortcuts
⌘ + W Close window
option + ⌘ + W Close all windows
⌘ + right arrow Expand folder (list view)
⌘ + left arrow Collapse folder (list view)
option + ⌘ + up arrow Open parent folder and close current window
Menu Commands
shift + ⌘ + Q Apple Menu; Log out
shift + option + ⌘ + Q Apple Menu; Log out immediately
shift + ⌘ + delete Finder Menu; Empty trash
option + shift + ⌘ + delete Finder Menu; Empty trash with no questions asked
⌘ + H Finder Menu; Hide program
option + ⌘ + H Finder Menu; Hide everything else
⌘ + N File Menu; Opens new window
shift + ⌘ + N File Menu; Creates new folder
⌘ + O File Menu; Open something
⌘ + S File Menu; Save
shift + ⌘ + S File Menu; Save as
⌘ + P File Menu; Print
⌘ + I File Menu; Get info
⌘ + T File Menu; add to favorites (or, in Firefox, opens a new browsing tab)
⌘ + delete File Menu; Move to trash
⌘ + E File Menu; Eject
⌘ + F File Menu; Find
⌘ + Z Edit Menu; Undo
⌘ + X Edit Menu; Cut
⌘ + C Edit Menu; Copy
⌘ + V Edit Menu; Paste
⌘ + A Edit Menu; Select All
⌘ + B View Menu; Hide Toolbar
⌘ + J View Menu; Show view options
⌘ + [ Go Menu; Back
⌘ + ] Go Menu; Forward
shift + ⌘ + C Go Menu; Computer
shift + ⌘ + H Go Menu; Home
shift + ⌘ + A Go Menu; Applications
shift + ⌘ + G Go Menu; Go to Folder...
⌘ + K Go Menu; Connect to Server...
⌘ + M Window Menu; Minimize window
option + ⌘ + M Window Menu; Minimize all windows
Other Useful Shortcuts
option + ⌘ + D Show/Hide Dock
⌘ + Tab Switch applications (from applications already open)
⌘ + ` Switch to the window in the open application behind the one you're already looking at
option + ⌘ + esc Force quit
ctrl + ⌘ + eject Fast restart
ctrl + ⌘ + option + eject Fast shutdown
ctrl + ⌘ + power Hard restart (on laptops only)
Various Boot Options
Hold these keys down as soon as you hear the chime.
| Target Disk Mode | T |
| Boot from CD-ROM | C |
| Boot from internal HD | D |
| Boot from network | N |
| Boot from other devices | opt |
| Boot into OS X after booting into OS 9 | X |
| Safe boot | shift (immediately at startup) |
| Start Open Firmware | cmd + opt + O + F |
| Eject CD/DVDs | mouse down |
| Force PowerBooks to reset screen | R |
| Single-User Mode | cmd + S |
| Verbose Mode | cmd + V |
| Override auto-login | shift (after bootscreen, before login screen) |
| Safe login | shift (at login screen) |
| Username/Password dialog instead of list of users | opt + esc |
For many more keyboard shortcuts, check this out or see the list kept by Apple

