Look at the folder structure of a typical OS X installation. Open a Finder window and click the icon for your hard drive (which is typically called Macintosh HD) in the Sidebar. You should see at least four folders: Applications, Library, System, and Users. Within the Users folder, each user has his own set of folders containing documents, preferences, and other information that belongs to that user and account.
Your Mac's root-level LaunchAgents folder is a common location for adware to store files. Why is this bad? Double-click on “Library,” then, and you’ll find the folder labeled. The Mac OS is chock full of hidden areas where data, information, or features have been secreted away from Mac users. One of these clandestine locations is the users library folder, commonly written out as /Library/. What’s In Your Library? Although hidden, the users library folder contains quite a. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share. By Dan Frakes, Macworld Inside your home folder is a Library folder —commonly written in Unix syntax as /Library, which means “a folder named Library at the root level of your home folder.”.
From the top: The Computer folder
The Computer folder shows all the storage devices that are currently connected to your Mac. The following steps show how you can start at the Computer folder and drill down through the folder structure:
To find the Computer folder, choose Go→Computer or press Shift+Command+C.
The Computer folder in this example is called Bob L’s MacBook Pro, and it contains a hard-drive icon (Mavericks HD) and a Network icon, with which you can access servers or other computers on your local network.
Double-click the icon that holds your OS X stuff.
Technically, this drive is called your boot drive. If you haven’t changed it, it’s probably called Macintosh HD.
Check out the folders you find there.
You should see at least four folders (unless you’ve added some; if you installed the Xcode programming tools, for example, you have more).
The Applications folder
You can access the Applications folder, located at the root level of your boot drive, by clicking the Applications icon in the Sidebar, by choosing it in the Go menu, or by pressing Shift+Command+A. In this folder, you find applications and utilities that Apple includes with OS X.
Fonts (and more) in the public Library folder
The Library folder, at the root level of your OS X hard drive, is like a public library; it stores items available to everyone who logs into any account on this Mac.
Leave the /System/Library folder alone.Don’t move, remove, or rename it, or do anything within it. It’s the nerve center of your Mac. In other words, you should never have to touch this third Library folder.
By and large, the public Library subfolder that gets the most use is the Fonts folder, which houses many of the fonts installed on the Mac
Finally, the Library in the Users folder is where OS X stores configuration and preferences files shared by all users.
If your Mac is set up for multiple users, only users with administrator (admin) privileges can put stuff in the public (root-level) Library folder.
The System folder
The System folder contains the files that OS X needs to start up and keep working.
Leave the System folder alone.Don’t move, remove, or rename it or anything within it. It’s part of the nerve center of your Mac.
The usability of the Users folder
When you open the Users folder, you see a folder for each person who has a user account on the Mac, as well as the Shared folder.
The Shared folder that you see inside the Users folder allows everyone who uses the Mac to use any files stored there. If you want other people who use your Mac to have access to a file or folder, the Shared folder is the proper place to stash it.
There’s no place like Home
From the Users folder, you can drill down into the Home folder to see what’s inside. When the user logs on to this Mac, his Home folder appears whenever he clicks the Home icon in the Sidebar, chooses Go→Home, or uses the keyboard shortcut Shift+Command+H.
Your Home folder is the most important folder for you as a user — or at least the one where you stash most of your files. It is strongly recommend that you store all the files you create in subfolders within your Home folder — preferably, in subfolders in your Home/Documents folder.
When you open your Home folder, you see a Finder window with a little house icon and your short username in the title bar. Seeing your short username in the title bar tells you that you’re in your Home folder. Every user has a Home folder named after his or her short username.
If your Mac has more than one user, you can see the other users’ Home folders in your Users folder, but OS X prevents you from opening files from or saving files to them.
By default, your Home folder has several folders inside it created by OS X. The following four are the most important:
Desktop: If you put items (files, folders, applications, or aliases) on the Desktop, they’re actually stored in the Desktop folder.
Documents: This is the place to put all the documents (letters, spreadsheets, recipes, and novels) that you create.
Library: This Library folder is invisible in Mavericks. Rest assured that even though it’s hidden, it’s still one of the most important folders in your Home folder, containing Preferences, fonts available only to you, and other stuff that you expect to use.
Public: If others on your local area network use file sharing to connect with your Mac, they can’t see or use the files or folders in your Home folder, but they can share files you’ve stored in your Home folder’s Public folder.
You can create more folders, if you like. In fact, every folder that you ever create (at least every one you create on this particular hard drive or volume) should be within your Home folder.
The Library folder, at the root level of your OS X hard drive, is like a public library; it stores items available to everyone who logs into any account on this Mac.
There are actually three or more Library folders on your hard drive:
At the root level of your OS X disk
In the root-level System folder
In each user’s Home folder
Library Folder Mac
Now, here’s the scoop on your various Library folders:
Root Library Folder Mac El Capitan
The “Public” Library: You find a bunch of folders inside the Library folder at root level (the “public” Library folder). Most of them contain files that you never need to open, move, or delete.
By and large, the public Library subfolder that gets the most use is the Fonts folder, which houses many of the fonts installed on the Mac.
System Library: This is the nerve center of your Mac. In other words, you should never have to touch this particular Library folder.
Leave the/System/Libraryfolder alone. Don’t move, remove, or rename it, or do anything within it.
Library in each user’s Home folder: This is where OS X stores configuration and preferences files for each user account.
The locations of all these libraries are illustrated here.
No Library Folder On Mac
If your Mac is set up for multiple users, only users with administrator (admin) privileges can put stuff in the public (root-level) Library folder.