Mac Os X Library Containers

The Library directories are where the system and your code store all of their related data and resources. In macOS, this directory can contain many different subdirectories, most of which are created automatically by the system. In iOS, the app installer creates only a few subdirectories in ~/Library (such as Caches and Preferences) and your app is responsible for creating all others.

Table A-1 lists some of the common subdirectories you might find in a Library directory in macOS along with the types of files that belong there. You should always use these directories for their intended purposes. For information about the directories your app should be using the most, see The Library Directory Stores App-Specific Files.

Apple

Excel for Office 365 for Mac PowerPoint for Office 365 for Mac Excel 2016 for Mac PowerPoint 2016 for Mac Excel for Mac 2011 PowerPoint for Mac 2011 More. Less AutoRecover, a feature that is available in some Office applications, attempts to recover files automatically in the event of. In this Tip's N Tricks article, I want to point out a very important tip for getting around one of Apple's more peculiar security precautions in Mac OS X Lion and Mountain Lion. By default, the User Library folder is hidden in Mac OS 10.7 and above. We'll cover a few different methods to easily access this hidden folder. Mac App Store: The path must already exist when users set up the sync app. Standalone: The path will be created on users' computers if it doesn't already exist. Only with the Standalone sync app can you prevent users from changing the location. Tenants (TenantID) DefaultFolder. The OS did create a new iChat containers file with aliases to archive and attachments folders in /library/messages. I also checked that I (the owner) had read/write permissions on all folders involved and clicked “Apply to enclosed items” on these folders. Ever since Lion (OS X 10.7), Apple has hidden your personal Library folder (/Library) by default. In Lion and Mountain Lion (OS X 10.8), you could make the folder visible, but it required some work.

Table A-1 Subdirectories of the Library directory

Subdirectory

Directory contents

Application Support

Contains all app-specific data and support files. These are the files that your app creates and manages on behalf of the user and can include files that contain user data.

By convention, all of these items should be put in a subdirectory whose name matches the bundle identifier of the app. For example, if your app is named MyApp and has the bundle identifier com.example.MyApp, you would put your app’s user-specific data files and resources in the ~/Library/Application Support/com.example.MyApp/ directory. Your app is responsible for creating this directory as needed.

Resources required by the app to run must be placed inside the app bundle itself.

Assistants

Contains programs that assist users in configuration or other tasks.

Audio

Contains audio plug-ins, loops, and device drivers.

Autosave Information

Contains app-specific autosave data.

Caches

Contains cached data that can be regenerated as needed. Apps should never rely on the existence of cache files. Cache files should be placed in a directory whose name matches the bundle identifier of the app.

By convention, apps should store cache files in a subdirectory whose name matches the bundle identifier of the app. For example, if your app is named MyApp and has the bundle identifier com.example.MyApp, you would put user-specific cache files in the ~/Library/Caches/com.example.MyApp/ directory.

ColorPickers

Contains resources for picking colors according to a certain model, such as the HLS (Hue Angle, Saturation, Lightness) picker or RGB picker.

ColorSync

Contains ColorSync profiles and scripts.

Components

Contains system bundles and extensions.

Containers

Contains the home directories for any sandboxed apps. (Available in the user domain only.)

Contextual Menu Items

Contains plug-ins for extending system-level contextual menus.

Cookies

Contains data files with web browser cookies.

Developer

Contains data used by Xcode and other developer tools.

Dictionaries

Contains language dictionaries for the spell checker.

Documentation

Contains documentation files and Apple Help packages intended for the users and administrators of the computer. (Apple Help packages are located in the Documentation/Help directory.) In the local domain, this directory contains the help packages shipped by Apple (excluding developer documentation).

Extensions

Contains device drivers and other kernel extensions.

Favorites

Contains aliases to frequently accessed folders, files, or websites. (Available in the user domain only.)

Fonts

Contains font files for both display and printing.

Frameworks

Contains frameworks and shared libraries. The Frameworks directory in the system domain is for Apple-provided frameworks only. Developers should install their custom frameworks in either the local or user domain.

Internet Plug-ins

Contains plug-ins, libraries, and filters for web-browser content.

Keyboards

Contains keyboard definitions.

LaunchAgents

Specifies the agent apps to launch and run for the current user.

LaunchDaemons

Specifies the daemons to launch and run as root on the system.

Logs

Contains log files for the console and specific system services. Users can also view these logs using the Console app.

Mail

Contains the user’s mailboxes. (Available in the user domain only.)

PreferencePanes

Graphic for mac shape library. Contains plug-ins for the System Preferences app. Developers should install their custom preference panes in the local domain.

Preferences

Contains the user’s preferences. You should never create files in this directory yourself. To get or set preference values, you should always use the NSUserDefaults class or an equivalent system-provided interface.

Printers

In the system and local domains, this directory contains print drivers, PPD plug-ins, and libraries needed to configure printers. In the user domain, this directory contains the user’s available printer configurations.

QuickLook

Contains QuickLook plug-ins. If your app defines a QuickLook plug-in for viewing custom document types, install it in this directory (user or local domains only).

QuickTime

Contains QuickTime components and extensions.

Screen Savers

Contains screen saver definitions. See Screen Saver Framework Reference for a description of the interfaces used to create screen saver plug-ins.

How to find itunes music library on mac. 2020-4-5  Some iTunes users then attempt to access their iTunes music library by selecting the ‘Music’ dropdown menu but still are unable to find their local music library. Not to worry, if you can’t find your local music collection in iTunes, we’ll show you how to quickly access the local music library in iTunes on the Mac or Windows PC. 2020-3-18  How to Find iTunes Library Locations on Computer. Finding the iTunes files location on a computer is extremely easy. This section should teach you how you find the folder on your PC or Mac computer. Find iTunes Library Locations on Mac: Get to the desktop of your Mac. The media files contain imported songs, downloaded stuff and purchased items from iTunes. You can also find individual folders containing songs and movies etc. Here is the complete address of iTunes library on windows: C:UsersusernameMy MusiciTunes. 2 Where Is iTunes Library on Mac. Oppositely, if you are on a Mac, follow the process below.

Scripting Additions

Contains scripts and scripting resources that extend the capabilities of AppleScript.

Sounds

Contains system alert sounds.

StartupItems

(Deprecated) Contains system and third-party scripts and programs to be run at boot time. (See Daemons and Services Programming Guide for more information about starting up processes at boot time.)

Web Server

Contains web server content. This directory contains the CGI scripts and webpages to be served. (Available in the local domain only.)



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Optimized Storage in macOS Sierra and later* can save space by storing your content in iCloud and making it available on demand. When storage space is needed, files, photos, movies, email attachments, and other files that you seldom use are stored in iCloud automatically. Each file stays right where you last saved it, and downloads when you open it. Files that you’ve used recently remain on your Mac, along with optimized versions of your photos.

* If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.

Find out how much storage is available on your Mac

Choose Apple menu  > About This Mac, then click Storage. This is an overview of available storage space on your Mac, as well as the space used by different categories of files:

Click the Manage button to open the Storage Management window, pictured below. (The Manage button is available only in macOS Sierra or later.)

Manage storage on your Mac

The Storage Management window offers recommendations for optimizing your storage. If some recommendations are already turned on, you will see fewer recommendations.


Store in iCloud

Click the Store in iCloud button, then choose from these options:

  • Desktop and Documents. Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon , which you can double-click to download the original file. Learn more about this feature.
  • Photos. Store all original, full-resolution photos and videos in iCloud Photos. When storage space is needed, only space-saving (optimized) versions of photos are kept on your Mac. To download the original photo or video, just open it.
  • Messages. Store all messages and attachments in iCloud. When storage space is needed, only the messages and attachments you recently opened are kept on your Mac. Learn more about Messages in iCloud.

Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.

Optimize Storage

Click the Optimize button, then choose from these options.

  • Automatically remove watched movies and TV shows. When storage space is needed, movies or TV shows that you purchased from the iTunes Store and already watched are removed from your Mac. Click the download icon next to a movie or TV show to download it again.
  • Download only recent attachments. Mail automatically downloads only the attachments that you recently received. You can manually download any attachments at any time by opening the email or attachment, or saving the attachment to your Mac.
  • Don't automatically download attachments. Mail downloads an attachment only when you open the email or attachment, or save the attachment to your Mac.

Optimizing storage for movies, TV shows, and email attachments doesn't require iCloud storage space.

Empty Trash Automatically

Empty Trash Automatically permanently deletes files that have been in the Trash for more than 30 days.

Reduce Clutter

Reduce Clutter helps you to identify large files and files you might no longer need. Click the Review Files button, then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation, or Trash.

Mac os x download

You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.

Learn how to redownload apps, music, movies, TV shows, and books.

Where to find the settings for each feature

Mac Os X Library Containers Free

The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control those settings directly within each app.

  • If you're using macOS Catalina, choose Apple menu  > System Preferences, click Apple ID, then select iCloud in the sidebar: Store in iCloud turns on the Optimize Mac Storage setting on the right. Then click Options next to iCloud Drive: Store in iCloud turns on the Desktop & Documents Folders setting. To turn off iCloud Drive entirely, deselect iCloud Drive.
    In macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud, then click Options next to iCloud Drive. Store in iCloud turns on the Desktop & Documents Folders and Optimize Mac Storage settings.
  • In Photos, choose Photos > Preferences, then click iCloud. Store in iCloud selects iCloud Photos and Optimize Mac Storage.
  • In Messages, choose Messages > Preferences, then click iMessage. Store in iCloud selects Enable Messages in iCloud.
  • If you're using macOS Catalina, open the Apple TV app, choose TV > Preferences from the menu bar, then click Files. Optimize Storage selects “Automatically delete watched movies and TV shows.”
    In macOS Mojave or earlier, open iTunes, choose iTunes > Preferences from the menu bar, then click Advanced. Optimize Storage selects “Automatically delete watched movies and TV shows.”
  • In Mail, choose Mail > Preferences from the menu bar, then click Accounts. In the Account Information section on the right, Optimize Storage sets the Download Attachments menu to either Recent or None.

Empty Trash Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Trash Automatically selects “Remove items from the Trash after 30 days.”

Mac Os X Library Containers List

Other ways that macOS helps automatically save space

With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:

  • Detects duplicate downloads in Safari, keeping only the most recent version of the download
  • Reminds you to delete used app installers
  • Removes old fonts, languages, and dictionaries that aren't being used
  • Clears caches, logs, and other unnecessary data when storage space is needed

How to free up storage space manually

Even without using the Optimized Storage features of Sierra or later, you can take other steps to make more storage space available:

Mac Os X Update

  • Music, movies, and other media can use a lot of storage space. Learn how to delete music, movies, and TV shows from your device.
  • Delete other files that you no longer need by moving them to the Trash, then emptying the Trash. The Downloads folder is good place to look for files that you might no longer need.
  • Move files to an external storage device.
  • Compress files.
  • Delete unneeded email: In the Mail app, choose Mailbox > Erase Junk Mail. If you no longer need the email in your Trash mailbox, choose Mailbox > Erase Deleted Items.

Mac Os X Library Containers Download

Learn more

Mac Os Container

  • When you duplicate a file on an APFS-formatted volume, that file doesn't use additional storage space on the volume. Deleting a duplicate file frees up only the space required by any data you might have added to the duplicate. If you no longer need any copies of the file, you can recover all of the storage space by deleting both the duplicate and the original file.
  • If you're using a pro app and Optimize Mac Storage, learn how to make sure that your projects are always on your Mac and able to access their files.