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Keyboard shortcuts in Mac OS X

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I think this topic will be interesting and useful for many Mac-users. Key keyboard shortcuts in Mac OS X:
⌘, ⌥, ⇧ and ⌫ . What do these icons / symbols mean?
- Command or Apple Key
- Option or Alt,
- Shift,
- Backspace or Return

Capture screenshots (screenshot)
⌘ + ⇧ + 3 - The jpeg image is saved on the desktop.
⌘ + ⇧ + 4 - A snapshot of a part of the screen.
⌘ + ⇧ + 4 + Space - Snapshot of a single / active window.

Capture screenshots (screenshot) and save to clipboard (clipboard)
+ ⇧ + 3 + Ctrl - Capture to clipboard
⌘ + ⇧ + 4 + Mouse movement + Ctrl - Capture part of the screen to the clipboard
⇧ 4 + Space + Ctrl Capture a window (camera effect)

Doc / Program Switching
⌘ + ⌥ + D - Hide / Show Dock
⌘ + Tab - Switch between programs
⌘ + `- Opening the current program settings
⌥ + Click on the program icon in the dock - Toggles the program, hides the previous one
⌘ + Click on the program icon in the dock - Toggles the program, hides all the rest
Ctrl + + ⌘ + 8 - Turn on / off monochrome

Finder
⌥ + Move with mouse (file) - A copy is made, even if the file is in the same folder / on the same volume.
⌘ + Move (file) - Moving a file, even if you move to another volume
⌘ + ⌥ + Move with mouse (file, program) - Create a shortcut in a new location.
⌘ + A - Select All
⌘ + D - Copy
⌘ + C - Copy to clipboard
⌘ + L - Create shortcut
⌘ + R - Show Original
⌘ + O - view content
⌘ + ↓ - Open content
⌘ + S - Save
⌘ + V - Paste
⌘ + Z - Undo Last Action
⌘ + ⇧ + S - Save with indication where
⌘ + N - Open a new Finder window
⌘ + ⇧ + N - Create a new folder
⌘ + Q - End the program
⌘ + W - Close window
⌘ + ⌥ + W - Close all windows
⌘ + I - Get file / object information
+ ⌥ + I - Get information about a file / object, this command is different from the previous one if you selected more than one object and want to see the information in one window.
⌘ + P - Print
⌘ + T - Add Bookmark
⌘ + Delete - Delete to Trash
⌘ + E - Eject DVD / CD
⌘ + F - Search (In VLC programs, QuickTime activates full screen mode)
Tab - Go to the next line, file, etc.
⌘ + ↑ - Go to the next directory, volume (up)
⌘ + [- Go back ⌘ +] Forward
⌘ + ⇧ + A - Open the Programs folder
⌘ + ⇧ + U - Open the Utilities folder
⌘ + ⇧ + H - Open the user's “home” folder
⌘ + ⇧ + K - Go to “Network”
⌘ + K - Connect to server
⌘ + ⇧ + G - Go to the folder (you must enter the full name)
⌘ + ⇧ + ⌫ - Empty Cart
⌘ + ⇧ + ⌥ + ⌫ - Empty the recycle bin without any warnings and the window of the “garbage removal”
⌘ + H - Hide window / program
⌘ + ⌥ + H - Hide other windows / applications

Spotlight
+ Spacebar - Activates the Spotlight search engine.
⌘ + ⌥ + Spacebar - Activates the Spotlight search box.
⌘ + ↓ / ↑ - Move up / down through volumes / folders (up / down arrows)

Text editing (in the programs TextEdit, Mail and others)
⌥ + ← - Move one word left
⌥ + → - Move one word to the right
Control + A - Return to the beginning of the offer
Control + E - Go to the end
⌘ + ← - Go to the beginning of the line
⌘ + → - Go to the end of the line
⌘ + ⌥ + T - Open window with symbols
⌘ + ↑ - Move / move to the beginning of the document
⌘ + ↓ - Move / move to end of document
Holding the shift button (⇧) by clicking on the up / down arrow ↑ ↓ text selects the corresponding
⌥ + ⌫ - Delete the word
⌥ + up / down ↑ ↓ - Scrolling up / down

Other system
⌥ + Volume less / more Opens audio settings
Control + ⇧ + Eject - Turns off the display
⌥ + Brightness less / more - Opens the display settings

Shutdown / Logout
Press the main button on / off - light touch The computer goes into sleep mode
Press the main button on / off - hold for 10 seconds Forcibly shutting down the computer
Ctrl + Eject - The Restart, Sleep Mode, Shut Down window appears.
⌘ + Ctrl + Eject - Shut down all applications and restart the computer (forcibly)
⌘ + ⌥ + ctrl + eject - Shut down all applications and restart the computer (with a warning)
⌘ + ⌥ + Eject - Sleep Mode
⌘ + ⌥ + Esc - This opens the forced shutdown window.
⌘ +. (Full stop) - Completion of the process (for example: it finishes running the movie in the VLC pleura, without turning off the player)
⌘ + Ctrl + power - Instant computer overload (it is desirable to use only when the system hangs)
Sign Out
⌘ + ⇧ + Q - Logout (Apple Menu )
⌘ + ⇧ + ⌥ + Q - Logout immediately

Computer boot time
Shift - Safe Boot Mode Safe Mode - Press shift immediately after the boot melody
⌘ + V - Computer boot in Verbose mode
⌘ + S - Computer boot in command mode (terms)
X - Forced download on Mac OS X
⌘ + ⌥ + ⇧ + ⌫ - The computer will “skip” the main OS, boot from an external volume or DVD
C - Boot from system CD
D - Download from the first section
N - Boot from NetBoot (from network)
T - Boot in FireWire Target mode, connect two computers via a FireWire cable, hold T at boot.
Option - Select Boot Volume
⌘ + ⌥ + P + R - PRAM Reset - Reset PRAM settings
⌘ + ⌥ + O + F - Access to Open Firmware
⌘ + E - Eject CD / DVD