Basic For Mac Os X

Mac OS X — The Basics. Mac OS X is the operating system of your Mac. It’s the basic system that enables your Mac to work. All the files, folders and programs are handled by Mac OS X as well as internet connectivity, battery consumption and more. As a Mac user, you will encounter Mac OS X in many different forms: When viewing the desktop. With this quick guide, we’re going to try and at least take away some of the mystery that exists within the Terminal app on macOS by giving you the power that you need to list all 1,400+ terminal commands available across all versions of macOS and OS X.

To use a keyboard shortcut, press and hold one or more modifier keys and then press the last key of the shortcut. For example, to use Command-C (copy), press and hold the Command key, then the C key, then release both keys. Mac menus and keyboards often use symbols for certain keys, including modifier keys:

On keyboards made for Windows PCs, use the Alt key instead of Option, and the Windows logo key instead of Command.

Some keys on some Apple keyboards have special symbols and functions, such as for display brightness , keyboard brightness , Mission Control, and more. If these functions aren't available on your keyboard, you might be able to reproduce some of them by creating your own keyboard shortcuts. To use these keys as F1, F2, F3, or other standard function keys, combine them with the Fn key.

Cut, copy, paste, and other common shortcuts

Command-X: Cut the selected item and copy it to the Clipboard.
Command-C: Copy the selected item to the Clipboard. This also works for files in the Finder.
Command-V: Paste the contents of the Clipboard into the current document or app. This also works for files in the Finder.
Command-Z: Undo the previous command. You can then press Shift-Command-Z to Redo, reversing the undo command. In some apps, you can undo and redo multiple commands.
Command-A: Select All items.
Command-F: Find items in a document or open a Find window.
Command-G: Find Again: Find the next occurrence of the item previously found. To find the previous occurrence, press Shift-Command-G.
Command-H: Hide the windows of the front app. To view the front app but hide all other apps, press Option-Command-H.
Command-M: Minimize the front window to the Dock. To minimize all windows of the front app, press Option-Command-M.
Command-O: Open the selected item, or open a dialog to select a file to open.
Command-P: Print the current document.
Command-S: Save the current document.
Command-T: Open a new tab.
Command-W: Close the front window. To close all windows of the app, press Option-Command-W.
Option-Command-Esc: Force quit an app.
Command–Space bar: Show or hide the Spotlight search field. To perform a Spotlight search from a Finder window, press Command–Option–Space bar. (If you use multiple input sources to type in different languages, these shortcuts change input sources instead of showing Spotlight. Learn how to change a conflicting keyboard shortcut.)
Control–Command–Space bar: Show the Character Viewer, from which you can choose emoji and other symbols.
Control-Command-F: Use the app in full screen, if supported by the app.
Space bar: Use Quick Look to preview the selected item.
Command-Tab: Switch to the next most recently used app among your open apps.
Shift-Command-5: In macOS Mojave or later, take a screenshot or make a screen recording. Or use Shift-Command-3 or Shift-Command-4 for screenshots. Learn more about screenshots.
Shift-Command-N: Create a new folder in the Finder.
Command-Comma (,): Open preferences for the front app.

Sleep, log out, and shut down shortcuts

You might need to press and hold some of these shortcuts for slightly longer than other shortcuts. This helps you to avoid using them unintentionally.

Power button: Press to turn on your Mac or wake it from sleep. Press and hold for 1.5 seconds to put your Mac to sleep.* Continue holding to force your Mac to turn off.
Option–Command–Power button* or Option–Command–Media Eject : Put your Mac to sleep.
Control–Shift–Power button* or Control–Shift–Media Eject : Put your displays to sleep.
Control–Power button* or Control–Media Eject : Display a dialog asking whether you want to restart, sleep, or shut down.
Control–Command–Power button:* Force your Mac to restart, without prompting to save any open and unsaved documents.
Control–Command–Media Eject : Quit all apps, then restart your Mac. If any open documents have unsaved changes, you will be asked whether you want to save them.
Control–Option–Command–Power button* or Control–Option–Command–Media Eject : Quit all apps, then shut down your Mac. If any open documents have unsaved changes, you will be asked whether you want to save them.
Control-Command-Q: Immediately lock your screen.
Shift-Command-Q: Log out of your macOS user account. You will be asked to confirm. To log out immediately without confirming, press Option-Shift-Command-Q.

* Does not apply to the Touch ID sensor.

Finder and system shortcuts

Command-D: Duplicate the selected files.
Command-E: Eject the selected disk or volume.
Command-F: Start a Spotlight search in the Finder window.
Command-I: Show the Get Info window for a selected file.
Command-R: (1) When an alias is selected in the Finder: show the original file for the selected alias. (2) In some apps, such as Calendar or Safari, refresh or reload the page. (3) In Software Update preferences, check for software updates again.
Shift-Command-C: Open the Computer window.
Shift-Command-D: Open the desktop folder.
Shift-Command-F: Open the Recents window, showing all of the files you viewed or changed recently.
Shift-Command-G: Open a Go to Folder window.
Shift-Command-H: Open the Home folder of the current macOS user account.
Shift-Command-I: Open iCloud Drive.
Shift-Command-K: Open the Network window.
Option-Command-L: Open the Downloads folder.
Shift-Command-N: Create a new folder.
Shift-Command-O: Open the Documents folder.
Shift-Command-P: Show or hide the Preview pane in Finder windows.
Shift-Command-R: Open the AirDrop window.
Shift-Command-T: Show or hide the tab bar in Finder windows.
Control-Shift-Command-T: Add selected Finder item to the Dock (OS X Mavericks or later)
Shift-Command-U: Open the Utilities folder.
Option-Command-D: Show or hide the Dock.
Control-Command-T: Add the selected item to the sidebar (OS X Mavericks or later).
Option-Command-P: Hide or show the path bar in Finder windows.
Option-Command-S: Hide or show the Sidebar in Finder windows.
Command–Slash (/): Hide or show the status bar in Finder windows.
Command-J: Show View Options.
Command-K: Open the Connect to Server window.
Control-Command-A: Make an alias of the selected item.
Command-N: Open a new Finder window.
Option-Command-N: Create a new Smart Folder.
Command-T: Show or hide the tab bar when a single tab is open in the current Finder window.
Option-Command-T: Show or hide the toolbar when a single tab is open in the current Finder window.
Option-Command-V: Move the files in the Clipboard from their original location to the current location.
Command-Y: Use Quick Look to preview the selected files.
Option-Command-Y: View a Quick Look slideshow of the selected files.
Command-1: View the items in the Finder window as icons.
Command-2: View the items in a Finder window as a list.
Command-3: View the items in a Finder window in columns.
Command-4: View the items in a Finder window in a gallery.
Command–Left Bracket ([): Go to the previous folder.
Command–Right Bracket (]): Go to the next folder.
Command–Up Arrow: Open the folder that contains the current folder.
Command–Control–Up Arrow: Open the folder that contains the current folder in a new window.
Command–Down Arrow: Open the selected item.
Right Arrow: Open the selected folder. This works only when in list view.
Left Arrow: Close the selected folder. This works only when in list view.
Command-Delete: Move the selected item to the Trash.
Shift-Command-Delete: Empty the Trash.
Option-Shift-Command-Delete: Empty the Trash without confirmation dialog.
Command–Brightness Down: Turn video mirroring on or off when your Mac is connected to more than one display.
Option–Brightness Up: Open Displays preferences. This works with either Brightness key.
Control–Brightness Up or Control–Brightness Down: Change the brightness of your external display, if supported by your display.
Option–Shift–Brightness Up or Option–Shift–Brightness Down: Adjust the display brightness in smaller steps. Add the Control key to this shortcut to make the adjustment on your external display, if supported by your display.
Option–Mission Control: Open Mission Control preferences.
Command–Mission Control: Show the desktop.
Control–Down Arrow: Show all windows of the front app.
Option–Volume Up: Open Sound preferences. This works with any of the volume keys.
Option–Shift–Volume Up or Option–Shift–Volume Down: Adjust the sound volume in smaller steps.
Option–Keyboard Brightness Up: Open Keyboard preferences. This works with either Keyboard Brightness key.
Option–Shift–Keyboard Brightness Up or Option–Shift–Keyboard Brightness Down: Adjust the keyboard brightness in smaller steps.
Option key while double-clicking: Open the item in a separate window, then close the original window.
Command key while double-clicking: Open a folder in a separate tab or window.
Command key while dragging to another volume: Move the dragged item to the other volume, instead of copying it.
Option key while dragging: Copy the dragged item. The pointer changes while you drag the item.
Option-Command while dragging: Make an alias of the dragged item. The pointer changes while you drag the item.
Option-click a disclosure triangle: Open all folders within the selected folder. This works only when in list view.
Command-click a window title: See the folders that contain the current folder.
Learn how to use Command or Shift to select multiple items in the Finder.
Click the Go menu in the Finder menu bar to see shortcuts for opening many commonly used folders, such as Applications, Documents, Downloads, Utilities, and iCloud Drive.

Document shortcuts

The behavior of these shortcuts may vary with the app you're using.

Command-B: Boldface the selected text, or turn boldfacing on or off.
Command-I: Italicize the selected text, or turn italics on or off.
Command-K: Add a web link.
Command-U: Underline the selected text, or turn underlining on or off.
Command-T: Show or hide the Fonts window.
Command-D: Select the Desktop folder from within an Open dialog or Save dialog.
Control-Command-D: Show or hide the definition of the selected word.
Shift-Command-Colon (:): Display the Spelling and Grammar window.
Command-Semicolon (;): Find misspelled words in the document.
Option-Delete: Delete the word to the left of the insertion point.
Control-H: Delete the character to the left of the insertion point. Or use Delete.
Control-D: Delete the character to the right of the insertion point. Or use Fn-Delete.
Fn-Delete: Forward delete on keyboards that don't have a Forward Delete key. Or use Control-D.
Control-K: Delete the text between the insertion point and the end of the line or paragraph.
Fn–Up Arrow: Page Up: Scroll up one page.
Fn–Down Arrow: Page Down: Scroll down one page.
Fn–Left Arrow: Home: Scroll to the beginning of a document.
Fn–Right Arrow: End: Scroll to the end of a document.
Command–Up Arrow: Move the insertion point to the beginning of the document.
Command–Down Arrow: Move the insertion point to the end of the document.
Command–Left Arrow: Move the insertion point to the beginning of the current line.
Command–Right Arrow: Move the insertion point to the end of the current line.
Option–Left Arrow: Move the insertion point to the beginning of the previous word.
Option–Right Arrow: Move the insertion point to the end of the next word.
Shift–Command–Up Arrow: Select the text between the insertion point and the beginning of the document.
Shift–Command–Down Arrow: Select the text between the insertion point and the end of the document.
Shift–Command–Left Arrow: Select the text between the insertion point and the beginning of the current line.
Shift–Command–Right Arrow: Select the text between the insertion point and the end of the current line.
Shift–Up Arrow: Extend text selection to the nearest character at the same horizontal location on the line above.
Shift–Down Arrow: Extend text selection to the nearest character at the same horizontal location on the line below.
Shift–Left Arrow: Extend text selection one character to the left.
Shift–Right Arrow: Extend text selection one character to the right.
Option–Shift–Up Arrow: Extend text selection to the beginning of the current paragraph, then to the beginning of the following paragraph if pressed again.
Option–Shift–Down Arrow: Extend text selection to the end of the current paragraph, then to the end of the following paragraph if pressed again.
Option–Shift–Left Arrow: Extend text selection to the beginning of the current word, then to the beginning of the following word if pressed again.
Option–Shift–Right Arrow: Extend text selection to the end of the current word, then to the end of the following word if pressed again.
Control-A: Move to the beginning of the line or paragraph.
Control-E: Move to the end of a line or paragraph.
Control-F: Move one character forward.
Control-B: Move one character backward.
Control-L: Center the cursor or selection in the visible area.
Control-P: Move up one line.
Control-N: Move down one line.
Control-O: Insert a new line after the insertion point.
Control-T: Swap the character behind the insertion point with the character in front of the insertion point.
Command–Left Curly Bracket ({): Left align.
Command–Right Curly Bracket (}): Right align.
Shift–Command–Vertical bar (|): Center align.
Option-Command-F: Go to the search field.
Option-Command-T: Show or hide a toolbar in the app.
Option-Command-C: Copy Style: Copy the formatting settings of the selected item to the Clipboard.
Option-Command-V: Paste Style: Apply the copied style to the selected item.
Option-Shift-Command-V: Paste and Match Style: Apply the style of the surrounding content to the item pasted within that content.
Option-Command-I: Show or hide the inspector window.
Shift-Command-P: Page setup: Display a window for selecting document settings.
Shift-Command-S: Display the Save As dialog, or duplicate the current document.
Shift–Command–Minus sign (-): Decrease the size of the selected item.
Shift–Command–Plus sign (+): Increase the size of the selected item. Command–Equal sign (=) performs the same function.
Shift–Command–Question mark (?): Open the Help menu.

Other shortcuts

For more shortcuts, check the shortcut abbreviations shown in the menus of your apps. Every app can have its own shortcuts, and shortcuts that work in one app might not work in another.

Apple Music shortcuts: Choose Help > Keyboard shortcuts from the menu bar in the Music app.
Other shortcuts: Choose Apple menu > System Preferences, click Keyboard, then click Shortcuts.

Learn more

Create your own shortcuts and resolve conflicts between shortcuts
Change the behavior of the function keys or modifier keys

Need a little help figuring out your new iMac or MacBook? You’ve come to the right place.

Check out our updated survival guide for the basics on Mac OS X, including details on the latest “Mavericks” features, illustrated guides for updating and backing up your Mac, must-know tips, and more.

The basics

What is Mac OS X?

It’s the software that powers all the day-to-day features on your iMac or MacBook. Every time you click a menu at the top of the screen, open a folder on your desktop, or search for a document on your hard drive, you have the Mac operating system (or “Mac OS”) to thank.

OK, so what does the “X” in “Mac OS X” stand for?

It stands for “10,” as in the Roman numeral—and specifically, it means we’re currently using the tenth major version of the Mac OS. Mac OS X first arrived for desktop Macs way back in 2001, and had been preceded by—you guessed it—Mac OS 9.

“Mavericks” is the latest version of Mac OS X, the software that powers your iMac or MacBook.

What is “Mavericks”?

Over the past dozen years, there have been a series of big updates to Mac OS X, and the latest update, 10.9, is nicknamed “Mavericks.” Previous updates to Mac OS X have been named “Panther,” “Leopard,” “Snow Leopard,” and plain-old “Lion.” Yes, it’s safe to say that Apple has a thing for felines—or had, until OS X Mavericks came around.

Anyway, Mac OS X “Mavericks” (which came out in October 2013) adds more than 200 new features to the Mac operating system, including all-new Maps and iBooks apps that mirror those on the iPhone and iPad; major overhauls for Calendar and the Safari web browser; revamped folder windows that now boast tabs, similar to Safari; and enhanced desktop notifications, including alerts from Mavericks-friendly websites like the New York Times and CNN.

Check out Apple’s rundown of the 200-plus new features in Mavericks right here.

Where to get Mavericks

Mavericks is available for download from the Mac App Store—and yes, it’s free.

The “About This Mac” window will tell you is your Mac is new enough for Mavericks.

Can your Mac handle Mavericks?

Generally speaking, you’ll need an iMac or MacBook Pro that was manufactured no earlier than 2007, or a MacBook circa 2008 or later.

Specific iMac and MacBook models have different requirements, however; click here for more details.

How to install Mavericks

The Mavericks installation process is fairly straightforward, but it will require at least an hour of your time.

Once you grab Mavericks from the Mac App Store, your system will download the update and alert you when it’s ready to begin the installation process. Just follow the prompts (there are only a few), sit back and wait. After a restart or two, your Mac should be all set.

How to back up your Mac

Don’t even thing of updating your Mac’s operating system without backing up your hard drive first. Luckily, backing up your hard drive is easy thanks for a Mac OS X utility called Time Machine; here’s how to use it.

40 must-know Mac tips and tricks

1. 5 gotta-try folder tricks for “Mavericks”

Apple’s just-released (and free) software update for the Mac comes with a series of nifty folder tricks up its sleeves, including the ability to open a folder as a tab in an existing folder window—yes, kinda like you can in a browser.

Want to map a street address directly from Safari? Easy.

2. Map a street address within Safari

Ever stumble across a street address on the web—yes, an actual street address—and wish you could quickly pinpoint it on a map? Usually, you’d just copy and paste the address into Google Maps, but the latest version of the Safari for “Mavericks” saves you a step.

3. Take a screenshot

So, you know how to snap an image of your iPhone’s screen—but what if you want to take a screenshot of your Mac’s desktop? Well, there are actually four ways to snap a screenshot on your Mac, and they’re all just a few keystrokes away.

4. Customize and create keyboard shortcuts

Wish you could snap a screenshot on your Mac by tapping just the F5 key rather than tangling with the SHIFT + COMMAND + 3 keyboard combo? Well, you can.

You can create time-saving “macros” for your street address, job title, phone number, or practically any string of text.

5. Create time-saving, text-replacing “macros”

You can create custom, text-replacing “macros” (or shortcuts) on your Mac for your home address, job title, phone number, or other oft-used strings of text.

6. Pick a new alert sound, or install your own

Getting tired of the little “blurp” (or “ding,” or “beep”) sound your Mac makes when it needs your attention? As it turns out, your Mac comes with more than a dozen built-in alert sounds, and you can change the sound whenever you want.

7. Set “Do Not Disturb” mode to turn on (and off) automatically

One my of favorite new features in iOS 7 is the ability to automatically silence iPhone or iPad alerts during the wee hours—and now, thanks to Apple’s recent “Mavericks” update, you can set your Mac to muzzle notifications on a daily (or nightly) basis, too.

Got a DVD-less Mac? You can wireless share the optical drive of any nearby iMac or MacBook.

8. Share a DVD drive over Wi-Fi with Remote Disc

The MacBook Air, the Mac Mini, the new “retina” MacBooks, and other optical drive-less Macs come with a feature called “Remote Disc,” which lets you wirelessly borrow the optical drive of almost any nearby Mac or PC.

9. Get the hang of desktop “spaces” in Mission Control

The Mac’s handy Mission Control feature lets you manage multiple desktop “spaces” at once, each filled with its own assortment of open documents and applications. Sounds confusing, I know. But once you get the hang of it, these additional, virtual desktops can become addicting—and even essential.

10. Why “natural” scrolling feels backwards—and how to turn it off

Does scrolling on your Mac feel backwards to you? Blame Apple’s new “natural” scrolling feature. Luckily, turning it off is a cinch.

Wish you could get your scroll bars back? All you have to do is tweak the right setting.

11. Get your missing scroll bars back

Hey, what happened to the scroll bars on your windows? Don’t worry—you can get them back in a few clicks.

12. 12 handy trackpad gestures you need to try

Want to zoom in on a web page, twirl a snapshot in iPhoto, sneak a peek at the desktop, or look up the definition of a head-scratching word? You can do all that and more with a simple swipe, “pinch,” or tap on your Mac’s trackpad.

13. Turn on your Mac’s speaking clock

Your Mac has a built-in speaking clock that will read you the time every hour, on the hour—or the half hour, or even quarter hour. Here’s how to turn it on.

You can add a new Mission Control desktop with a little help from your mouse.

14. Create a new desktop in Mission Control

Making a new “space” in Mission Control, the essential Mac feature that gives you a bird’s eye view of all your virtual desktops, is easy—if you know where to look.

15. Pin an app to a specific Mission Control desktop

There’s a way to assign an app to a specific desktop in Mission Control, perfect for keeping your programs in their proper “spaces.”

16. Paste your signature into a PDF, no scanner or printer required

Got a contract or some other document that you need to sign and return via email? Just snap a photo of your John Hancock with your Mac’s iSight camera (just about any recent iMac or MacBook should have one), then paste it into the document you need to sign.

17. Make the most of the Mac desktop dock

Thanks to the handy Dock at the bottom of your Mac desktop, your favorite programs, files, and folders are never more than a click away—and if you know where to look, you can make the Dock behave practically any way you want.

“Sticky Keys” make for a clever alternative to playing “Twister” with your fingers.

18. Enable “sticky keys”

Having a tough time maneuvering your fingertips around multi-key combos like SHIFT + ALT + DELETE? The “sticky keys” feature in Mac OS X can help.

19. Take a “Quick Look” at almost any file

Meet “Quick Look,” a handy, built-in Mac tool that lets you take a quick glance at almost any file or folder without committing to firing up a program.

20. 12 Mac keyboard shortcuts you need to know

Switch applications, take a “quick look” at a file, get help, and more, all without touching your Mac’s mouse or trackpad.

21. Give your Mac desktop icons a makeover

Got a jumble of icons cluttering your Mac’s desktop? Are you desktop icons too big—or too small? Wish they would just arrange themselves? Help is here!

22. 5 ways to make the most of the sidebar

Looking to add your own folders to the Mac sidebar? Or perhaps you’d rather make the sidebar bigger, smaller, or just plain gone. Help is here!

Just dip into your Mac’s system settings to make the mouse pointer bigger.

23. Boost the size of the mouse pointer

Want to save both your eyesight and your sanity? Here’s an easy way: by dipping into your system settings and boosting the size of the mouse pointer.

24. Control your desktop with “Hot Corners”

Turn on the Mac’s hot-corner feature to jump to Mission Control, clear your desktop, and more, all with a simple flick of your fingertip.

25. Disable the Caps Lock key

Sick of striking the Caps Lock key by mistake? The good news is that turning off Caps Lock for good on a Mac is easy.

26. Stop programs from launching automatically

How long does it take for your Mac to start up? Too long? Maybe your Mac is trying to launch too many apps when it’s first starting up.

You can zoom your Mac’s display with a few keyboard combinations.

27. Zoom the display

Squinting at your computer screen? You can zoom the entire display on your PC or Mac, a handy trick for anyone with iffy eyesight. Here’s how.

28. Choose your default web browser

Sick of having Safari pop up when you really wanted another browser, like Chrome or Firefox? There’s single, centralized place on your Mac where you can set your default web browser once and for all.

29. Create a “recent files” folder on your desktop

It’s easy to create a folder on your desktop that’ll display only the files you’ve created or worked with in the past day, week, month … you name it.

30. Set your Mac to automatically start up (or shut down) each day

Want to wake up each morning to a freshly brewed pot of coffee and a fully powered-on Mac? It’s easier than you might think.

31. 16 Mac keyboard shortcuts you need to know

Want to switch applications, empty the trash, search your hard drive, or put your Mac to sleep, all without touching your mouse? Read on for 16 keyboard shortcuts that’ll let you zip around your Mac like a pro.

By tweaking a single setting, you can use your Mac’s function keys without having to press and hold the “Fn” key.

32. Use the function keys without pressing “Fn”

On most Mac keyboards, the function keys—you know, those keys along the top of the keyboard marked “F1,” “F2,” “F3,” and so on—don’t get the luxury of having an entire key to themselves. Want to switch things around so you don’t need to press and hold “fn” to use a function key? No problem.

33. Set multiple “home” or “start” pages for your web browser

Want more than just a single home page to appear when you fire up your web browser in the morning? No problem.

34. Cram a bunch of files into a single “zip” archive

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Got a bunch of little files that you want to send to a friend? Well, you could always drag them all into an email and send them as attachments, but talk about messy. A cleaner, tidier alternative is to take all those little (or not-so-little) files and compress them into an archive—or, to be more specific, a “zip” archive.

Tapping to click takes getting used to, but it’s surprisingly addicting, not to mention easier on your fingers.

35. “Click” the trackpad with a tap

Having a hard time clicking the MacBook’s squishy trackpad? If so, here’s an alternative: setting the Mac trackpad to “click” with a simple tap rather than an actual click.

36. Share files between nearby Macs with AirDrop

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Got a file on one Mac that you’d like to send to another Mac just a few feet away? A built-in Mac feature called AirDrop lets you…well, “drop” a file from one Mac onto another.

37. Change the default programs for your files

Annoyed that the Mac’s Preview app, and not Adobe Reader, always gets to open your PDF files? There’s a way to permanently change the “default” program that opens a given type of document.

38. Customize the buttons in program toolbars

Ever wish there were a Print button next to the Reply and Forward buttons in the Mac’s Mail app, or a pair of Zoom buttons on the top of every Safari browser window? Well, here’s the thing: you can add, remove, and rearrange the buttons in the “toolbar” of several familiar Mac programs.

You can set your wallpaper to change at any interval you choose, from once a day to once every 5 seconds.

39. Put your desktop wallpaper on shuffle

Getting tired of the same old wallpaper on your Mac desktop? If so, try this: just set your Mac to shuffle some or all of your favorite desktop wallpaper (or “background”) photos, at any interval you choose.

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40. 4 ways to right-click on a Mac trackpad

There are actually several different ways to right-click on the MacBook’s trackpad, which (nowadays, at least) is essentially one big button.

Get more help

Latest Mac Os

Have more questions about Mac OS X, or Mavericks in particular? Click here to ask me directly—and remember, there are no dumb questions.