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REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Computers, Laptops & Tablets > Apple
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lifewire's editorial guidelines Updated on April 26, 2021 Tweet Share Email Tweet Share Email Apple Macs iPad Your Mac has a few secrets, hidden folders, and files that are invisible to you. You may not even realize how much hidden data there is on your Mac, from basic things, such as preference files for user data and apps, to core system data that your Mac needs to run correctly. Apple hides these files and folders to prevent you from accidentally changing or deleting important data that your Mac needs.
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Apple's reasoning is good, but there are times when you may need to view these out-of-the-way corners of your Mac's file system. You'll find that accessing these hidden corners of your Mac is one of the steps in many Mac troubleshooting guides, as well as guides for backing up important data, such as mail messages or Safari bookmarks.
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Fortunately, Apple includes ways to access these hidden goodies in OS X and the more recent macOS. This guide concentrate on using the Terminal app, which provides a command line-like interface to many of the Mac's core functions.
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With Terminal, a simple command is all it takes to get your Mac to spill its secrets.
Terminal Is Your Friend
Launch Terminal, located at /Applications/Utilities/. Type or copy and paste the commands below into the Terminal window, one at a time, pressing ENTER after each one.
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defaults write com.apple.finder AppleShowAllFiles TRUE killall Finder Entering the two lines above into Terminal allows you to use the Finder to display all the hidden files on your Mac. The first line tells the Finder to display all files, regardless of how the hidden flag is set. The second line stops and restarts the Finder, so the changes can take effect.
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You may see your desktop disappear and reappear when you execute these commands; this is normal.
What Was Hidden Can Now Be Seen
Now that the Finder is displaying hidden files and folders, just what can you see?
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The answer depends on the specific folder you're looking at, but in just about every folder, you'll see a file named .DS_Store. The DS_Store file contains information about the current folder, including the icon to use for the folder, the location its window will open in, and other bits of information the system needs.
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More important than the ubiquitous .DS_Store file are the hidden folders that allow Mac users to access files such as the Library folder within your Home folder. The Library folder contains many files and folders that relate to specific apps and services that you use on your Mac.
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For example, have you ever wondered where your email messages are stored? If you use Mail, you'll find them in the hidden Library folder.
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Likewise, the Library folder contains your Calendar, Notes, Contacts, Saved Application States, and much more. Go ahead and look around the Library folder, but don't make any changes unless you have a specific problem that you're attempting to fix. Now that you can see all the hidden folders and files in the Finder, you'll probably want to hide them again, if only because they tend to clutter up Finder windows with extraneous items.
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Hide the Clutter
Launch Terminal, located at /Applications/Utilities/. Type or copy/paste the commands below into the Terminal window, one at a time, pressing ENTER after each one. defaults write com.apple.finder AppleShowAllFiles FALSE killall Finder Poof!
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The hidden files are once again hidden. No hidden folder or file was harmed in the making of this Mac tip.
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More About Terminal
If the power of the Terminal app intrigues you, you can find out more about what secrets Terminal can uncover in this guide: Use the Terminal Application to Access Hidden Features. Was this page helpful?
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Other Not enough details Hard to understand Submit More from Lifewire How to Delete a File in Terminal on Your Mac How to Make a Bootable Flash Installer of OS X or macOS How to Show or Hide Hidden Files and Folders on Mac How to Reset Your Mac's PRAM or NVRAM (Parameter RAM) Three Ways to Access the Library Folder on Your Mac How to Turn off Mouse Acceleration on Mac What Is a Hidden File & Why Are Some Files Hidden? How to Use Mac Terminal Commands How to Delete Temporary Files in Windows Make a Bootable USB Installer for OS X El Capitan How to Use the Netstat Command on Mac How to Copy iPod Music to Your Mac How to Zip and Unzip Files and Folders on a Mac How to Delete or Split Your Mac's Fusion Drive How to Show or Hide Hidden Files and Folders in Windows Terminal Tips and Tricks to Speed up Your Mac Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies
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