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.
From the top: The Computer folder
What does mac os /Library folder store? Ask Question Asked 7 years, 1 month ago. Such as the root library, computer library. The network library, /Network/Library would store settings shared by all computers in a network domain - if a network domain admin set one up, which nobody does anymore. Where is the standard C library on Mac. Jul 25, 2011 Inside your Home folder is a Library folder (/Library), accessible only to you, that's used to store your personal application-support files and, in some cases, data. The files and folders in.
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.
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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.
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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.
Mac Root Library App
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 user account named ”root” is a superuser with read and write privileges to more areas of the system, including files in other macOS user accounts. The root user is disabled by default. If you can log in to your Mac with an administrator account, you can enable the root user, then log in as the root user to complete your task.
The root user account is not intended for routine use. Its privileges allow changes to files that are required by your Mac. To undo such changes, you might need to reinstall your system software. You should disable the root user after completing your task.
It's safer to use the sudo command in Terminal instead of enabling the root user. To learn about sudo, open the Terminal app and enter man sudo.
Enable or disable the root user
- Choose Apple menu () > System Preferences, then click Users & Groups (or Accounts).
- Click , then enter an administrator name and password.
- Click Login Options.
- Click Join (or Edit).
- Click Open Directory Utility.
- Click in the Directory Utility window, then enter an administrator name and password.
- From the menu bar in Directory Utility:
- Choose Edit > Enable Root User, then enter the password that you want to use for the root user.
- Or choose Edit > Disable Root User.
Log in as the root user
When the root user is enabled, you have the privileges of the root user only while logged in as the root user.
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- Choose Apple menu > Log Out to log out of your current user account.
- At the login window, log in with the user name ”root” and the password you created for the root user.
If the login window is a list of users, click Other, then log in.
Mac Root Library Software
Remember to disable the root user after completing your task.
Change the root password
Mac Root Library Folder
- Choose Apple menu () > System Preferences, then click Users & Groups (or Accounts).
- Click , then enter an administrator name and password.
- Click Login Options.
- Click Join (or Edit).
- Click Open Directory Utility.
- Click in the Directory Utility window, then enter an administrator name and password.
- From the menu bar in Directory Utility, choose Edit > Change Root Password…
- Enter a root password when prompted.