Detailed description of various folders on MAC hard disks

Open the Macintosh HD and you will find four folders in it.

Applications, System, User, and Library are available respectively ). There are several folders in each of the four folders.

1. Applications: Of course, this is where various software is stored.

2. System:Includes system software installed by Apple. This resource is required for normal system operation and is located in the startup file.

/System/Library/CFMSupport CFM, Code Fragment Manager, equivalent to a common Library used by the old Mac OS applications. to ensure the consistency of the Mac OS environment. there is an extremely important file in OS X-CarbonLib, which is an indispensable file for executing the charcoal fire software. in addition, there are DiscRecordingLib (CD/R-RW Library), OpenGLLib (OpenGL), stbCLib (c)

/System/Library/DTDs is the XML file used by the storage System and is defined for its format. hosts written in Mac OS X Data Form are managed by three files: PropertyList. dtd, KeyboardLayout. dtd and sdef. consists of three dtd files. the full name of DTD is Document Type Definition. in addition ,. plist files are also written by XML.

/System/Library/Extensions is actually used to store hardware drivers. Apple does not call the driver but Extension.

/System/Library/Filesystems is mainly used to store information in OS X corresponding to and supporting the format. example: Same as the standard AppleShare (Apple file sharing standard), ISO 9660/FTP/HFS, and Samba on the network.

/System/Library/HelpViewer all files and files related to Mac OS Help are stored here

/System/Library/Find is the search function. It corresponds to multiple languages.

/System/Library/OpenSSL Full name: Secure Sockets Layer. it is a set of communication encryption technology, which is generally used on Web servers. It processes passwords with encrypted passwords to reduce the possibility of successful third-party data theft. it is generally used on URLs starting with https. mac OS X's built-in Web Server --- Apache also contains this service.

/System/Library/CoreServices/Dock this is one of the features of OS X, this part is about the Dock

/System/Library/CoreServices/Finder. app is special because it is an application rather than a folder. Finder. app is responsible for controlling all the resources on the entire OS.

/System/Library/CoreServices/Kerberos network authentication technology developed by MIT (MIT. it can easily log on to the system with a single ID. mac OS X supports Kerberos in version 4. the so-called Kerberos, in Greek mythology, is a hell guard with three heads and tails in the underworld.

/System/Library/CoreServices/Menu ExtrasStatus bar the original files of all built-in tools on the System. You can double-click to open the files and add the corresponding files directly on the status bar.

/System/Library/CoreServices/Setup Assistant all information about Setup Assistant is stored here.

/System/Library/CoreServices/Software Update this is the place responsible for Software update

 

3. Library: System resource library.For example, the font, ColorSync configuration, preference settings, and plug-ins should all be installed in the appropriate sub-directories in the Library directory.

Application Support contains Application-related data and Support files, such as third-party plug-ins, help applications, templates, and additional resource files that the Application uses but does not need to Support running. By convention, all such content will be stored in the subdirectory named after the application name.

Assistants contains programs that help users with configuration or other tasks.

ColorPickers contains the resources used to select colors. They are based on a certain model, such as the HLS (color angle, saturation, brightness) selector or RGB selector.

ColorSync includes the ColorSync configuration and script.

Components includes system packages and extensions.

Contextual Menu Items contains extensions for extending system-level menus.

Dictionaries contains the dictionary files that come with the system.

Desktop Pictures Desktop image directory.

Documentation contains document files and Apple help packages for computer users and administrators. (The Apple Help package is in the Help subdirectory .) In this region, this directory contains the help packages (excluding developer documents) released by Apple ).

Extensions includes device drivers and other kernel Extensions. (Exists only in the system domain .)

Favorites contains aliases that point to frequently accessed folders, files, or websites. (Exists only in the user domain .)

Fonts contains font files for display and printing.

Java contains the Java Runtime Environment.

 

StartupItems contains the systems that run at the time of system import, as well as third-party scripts and programs. (For more information about how to start the system at the time of import, see the topic of the System Startup Program)

4. User:Contains a user's proprietary resources. There is also a Library folder. Different from the above Library, it is designed for your account and contains your own personalized fonts and configuration files.

Applications include only the Applications available to the current user.

Desktop contains the Desktop items that the Finder displays on the current login user's Desktop.

Documents contains the user's personal Documents.

Download contains various downloaded documents.

The Library includes application settings and preference settings, and other user-specific system resources.

Documentation contains document files and Apple help packages for computer users and administrators. (The Apple Help package is in the Help subdirectory .) In this region, this directory contains the help packages (excluding developer documents) released by Apple ).

Extensions includes device drivers and other kernel Extensions. (Exists only in the system domain .)

 

~~~ There are several hidden folders in the hard disk ~~~

1) bin --------- stores basic UNIX Commands

2) sbin -------- UNIX commands are stored in advanced commands.

3) etc --------- System Configuration folder

4) var --------- stores frequently changed files, such as logs

5) tmp -------- temporary archiving of the system

6) usr --------- UNIX user-specific folder