Cheat Sheet

OS X Mountain Lion All-in-One For Dummies

Mountain Lion power users have several handy tools for working on a Macintosh efficiently and keeping the operating system running in top shape. Mountain Lion offers the user a wide variety of keyboard shortcuts for the Finder and encourages a regular maintenance schedule to keep Mountain Lion running trouble-free.

OS X Mountain Lion Finder Keyboard Shortcuts

The Finder performs most of the important functions within OS X Mountain Lion, and the following shortcuts will help you get things done more efficiently.

Key Function
Command+A Selects all items in the active window (icon view), all items in the column (column view), or all items in the list (cover flow view)
Command+C Copies selected items
Command+D Duplicates the selected item(s)
Command+E Ejects the selected volume
Command+F Displays the Find dialog
Command+H Hides All Finder windows
Command+I Shows info for selected item or items
Command+J Shows the view options for the active window
Command+K Displays the Connect to Server dialog
Command+L Creates an alias for the selected item
Command+M Minimizes the active window
Command+N Opens a new Finder window
Command+O Opens (or launches) the selected item
Command+R Shows the original for selected alias
Command+T Adds the selected item to the Sidebar
Command+V Pastes items from the Clipboard
Command+W Closes the active window
Command+X Cuts the selected items
Command+Z Undoes the last action (if possible)
Command+, Displays Finder Preferences
Command+1 Shows the active window in icon mode
Command+2 Shows the active window in list mode
Command+3 Shows the active window in column mode
Command+4 Shows the active window in cover flow mode
Command+[ Moves back to the previous Finder location
Command+] Moves forward to the next Finder location
Command+Del Moves selected items to the Trash
Command+Up Arrow Show enclosing folder
Command+` Cycles through windows
Command+? Displays the OS X Help Viewer
Command+Shift+A Takes you to your Applications folder
Command+Shift+C Takes you to the top-level Computer location
Command+Shift+G Takes you to a folder that you specify
Command+Shift+H Takes you to your Home folder
Command+Shift+Q Logs you out
Command+Shift+N Creates a new untitled folder in the active window
Command+Shift+U Takes you to your Utilities folder
Command+Shift+Del Deletes the contents of the Trash
Command+Option+H Hides all windows except the Finder's window(s)
Command+Option+N Creates a new Smart Folder
Command+Option+T Hides the Finder window toolbar and sidebar
Command+Option+Space Opens the Spotlight window
Command+Space Opens the Spotlight menu
Control+Up Arrow (or F3, depending on your keyboard model) Displays the Mission Control screen
Control+Down Arrow (or Control+F3, depending on your keyboard model) Shows all open windows for the current application using Mission Control
F11 (or Command+F3, depending on your keyboard model) Hides all windows to display the Desktop using Mission Control
F12 (or F4, depending on your keyboard model) Displays your Dashboard widgets
Space Quick Look

The Odd-Looking Keys on the Mac

If you’re new to the Mac and its keyboard, you will first want to get to know the modifier keys shown in the following chart.

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OS X Mountain Lion Maintenance Checklist

You know you should back up your data, but some lesser known maintenance tasks also play vital roles in keeping your Mac running fast and smooth.

Task Schedule
Check for updates with Software Update Automatic setting
Back up with Time Machine Automatic
Defragment (Micromat TechTool Pro/Prosoft Engineering Drive Genius) Once a month
Repair Disk Permissions (Disk Utility) Once a week
Delete Unnecessary User Accounts (System Preferences) As necessary
Scan for viruses (Intego VirusBarrier X6, ClamXav 2) Automatic
Check all volumes for errors (Disk Utility/Micromat TechTool Pro) Once a week
Check for the latest drivers for your hardware Once a month (or after installing new hardware)
Delete temporary Internet cache files (Prosoft Engineering Drive Genius) Once a month
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