Mac Library Preferencepanes
Go to /Library/Internet Plug-Ins. Remove the JavaAppletPlugin.plugin directory by executing the rm command as a root user or by using the sudo tool. Go to /Library/PreferencePanes. Remove JavaControlPanel.prefpane by executing the rm command as a root user or by using the sudo tool.
The System folder is the directory in the classic Mac OS that holds various files required for the system to operate, such as fonts, system extensions, control panels, and preferences.
Sudo rm -fr /Library/Application Support/Oracle/Java Do not attempt to uninstall Java by removing the Java tools from /usr/bin. This directory is part of the system software and any changes will be reset by Apple the next time you perform an update of the OS. Mar 29, 2018 In macOS, the System Preferences app located in the Applications folder is where you can adjust various settings to customize your Mac. Most system preference panes are native to macOS and cannot. Jun 16, 2017 Removing Java from the Mac is a three step effort involving manually deleting various java related plug-ins and files found throughout macOS / Mac OS / Mac OS X, both in the system /Library folder and in the users /Library folder. You should always back up your Mac before removing any item found within a system directory. Apr 14, 2011 Be default, Mac OS X software is stored in the Applications folder on your hard drive. Most programs are single icons (iTunes, Firefox), while others contain one or more folders full of items (Adobe Acrobat, Microsoft Office). Jun 16, 2017 Uninstalling Java on the Mac. Removing Java from the Mac is a three step effort involving manually deleting various java related plug-ins and files found throughout macOS / Mac OS / Mac OS X, both in the system /Library folder and in the users /Library folder.
| System Folder location | OS X equivalent | Description |
|---|---|---|
| Extensions | /System/Library/Extensions /Library/Extensions | Classic Mac: Stores OS extensions (init format) OS X: Stores kernel extensions and drivers (kext format) |
| Startup Items | /System/Library/StartupItems /Library/StartupItems | Stores files or scripts to be executed at boot time. |
| Control Panels | /System/Library/PreferencePanes /Library/PreferencePanes | Classic Mac: Stores system configuration programs, which are loaded at boot time. OS X: Stores the various properties that appear in System Preferences. |
| Preferences | /Library/Preferences | Stores various application and system preferences. |
Note: On OS X, files in /Library are not loaded at boot time when booting into Safe Mode.
Location and 'blessed' folders[edit]
The System Folder is normally located directly below the root directory in the filesystem hierarchy, but does not need to be. The Mac OS identifies the 'System Folder' by undocumented characteristics that are independent of its name (it has different names in non-English versions of the Mac OS), or its location in the directory hierarchy. The Macintosh Finder displays this 'blessed' folder with a special icon. A 'live' System Folder can freely be moved to any location in the directory hierarchy while the OS is operating, and it will continue to operate with no problems after the folder has been moved and after the system is restarted with the folder in its new location.
When the Finder copies a 'blessed' folder to a new volume, the copy is 'blessed' as well. On a system with more than one disk volume, it is thus easy to create functioning backups of a system simply by dragging the folder. It is also easy to maintain older and newer versions of the OS 'in parallel', each on its own volume, and revert to the old one if problems are encountered with the new one.
This degree of flexibility distinguishes the classic Mac OS from most other operating systems, including OS X.
All versions of Mac OS permit multiple copies of the operating system on a single volume. Mac OS 9 added formal support for this by permitting the user to select from multiple copies of the system on the same volume via the Startup Disk control panel, primarily used for selecting which volume to boot from.
Prior to this, one would have to manually bless the copy of the System Folder that they wished to use. A folder can be de-blessed by removing either the System or Finder files from it, which are the two files required for booting. (New World Macintoshes also need the Mac OS ROM file.) Some versions of the classic Mac OS, 8.5 and upwards, check the blessed System Folder before shutdown and warn the user if the System Folder is missing any of the key system files, to prevent them from inadvertently rendering the hard drive unbootable. An alternative to manually blessing the system folders in the Mac OS was to use a utility like System Picker.
Blessing is continued for mactel machines running Mac OS X with an EFI system, albeit in a mostly different manner. See EFI system partition § macOS and the two types of booting for Apple's BootX bootloader.[1]
User accessibility and customization[edit]
The System Folder is less protected than the OS X system folder, in that the contents are all viewable and most files and folders are editable. However it was possible to prevent inexperienced users from accidentally altering the contents by using the Protect System Folder Contents checkbox in the General Controls Control Panel. The Startup and Shut Down programs, Appearance themes, control panels, fonts, and extensions, as well as items in the Apple Menu, are controlled by adding or removing items from folders in the System Folder.
This process was made more convenient when Apple implemented the Extensions Manager, itself a Control Panel that was originally a shareware utility by Ricardo Batista. This allowed activation and deactivation of Control Panels, Extensions, Startup Items and Shutdown Items, and could be invoked fairly early in the boot process by holding down the space bar on the keyboard.
One notable absence was the managements of Fonts. For this, Apple allowed Third-party development of font management programs such as Extensis Suitcase, Adobe Type Manager and AlSoft MasterJuggler.
- ^'apple-opensource/bless'. GitHub. Retrieved 6 January 2020.
A preference pane plug-in is packaged on disk as a bundle with the .prefPane extension. Like all bundle packages, a preference pane consists of an executable (in the Mac OS X native Mach-O format), an information property list (Info.plist), and localizable and global (nonlocalized) resources.
Mcminnville Library
The structure of a sample preference pane bundle is shown in Figure 1.
When created within Xcode, the basic structure and the files are created for you. Creating a Preference Pane Bundle describes the steps required to produce a working preference pane bundle. The following sections describe the individual elements of the bundle.
Information Property Lists
Every bundle contains a dictionary, the Info.plist file, that defines certain properties of the bundle, such as the names of important resources. Preference pane bundles should provide values for the following keys in the information property list:
Key | Description |
|---|---|
| The unique identifier string for the bundle. Every bundle should have a unique |
| The name of the main nib file. If this key is omitted, the default preference pane implementation assumes a value of “Main”. The value must not include the |
| The name of an image file resource used in the Show All view and favorites area of the System Preferences application to represent the preference pane. The icon should be 32 x 32 pixels in size. If this key is omitted, System Preferences looks for the |
| The name of the preference pane displayed by System Preferences beneath the pane’s icon and in the Pane menu. You can include a newline character in the string (“ |
| The name of the main controller class of the preference pane. This class must be defined in the Mach-O binary of the bundle and it must be a subclass of NSPreferencePane. To avoid symbol name collisions, the name of the class must be prefixed by a specially munged version of the bundle identifier (see Preventing Name Conflicts for details). For example, “ |
Localizable Resources
Mac Library Preferencepanes County
A bundle’s resources can be localized to different languages and regions. Generally, these are resources that present text to the user, such as menu names and labels in windows. The resource files are stored in separate subdirectories in the Contents/Resources directory of the bundle. The directories are named after the language, such as English.lproj or Spanish.lproj. When your preference pane accesses a localized resource, such as a nib file containing a window, the operating system selects the version according to the user’s language preferences.
The simplest way for a preference pane to define its user interface is through a main nib file. This nib file should be a localized resource. The name of the main nib file can be anything, but it must match the value of the NSMainNibFile key in the bundle’s property list.
Like application bundles, preference pane bundles should include a localized InfoPlist.strings resource. This file contains individual strings the user sees, but cannot be stored within the nib file. This file should contain an entry for the NSPrefPaneIconLabel property whose value is the localized display name of the preference pane.
Global Resources
Not all resources need to be localized. Images without textual content can be used for all languages. These global resources are stored in the Contents/Resources directory.
The preference pane icon file (usually an .icns or .tiff file) is the 32 x 32 pixel icon used in the System Preferences application to represent the preference pane in the Show All view and the favorites area. The name of the preference pane icon file is specified by the NSPrefPaneIconFile key in the bundle’s property list. Typically, this is a global (nonlocalized) resource. However, if the icon contains locale-specific information (such as text), it can be made localized.
Where Preference Panes Live
Preference pane bundles for System Preferences live in the PreferencePanes family of library directories. This family of directories consists of these directories:
Directory Arduino include path. | Description |
|---|---|
| Mac OS X built-in preference panes |
| Third-party preference panes available to all users on the network |
| Third-party preference panes available to all users on the computer |
| Third-party preference panes available only to the current user |
System Preferences searches these directories in the reverse order that they are listed here. If multiple preference panes are found with identical bundle identifiers (CFBundleIdentifier key value), only the first preference pane found is displayed.
When creating a custom preference application or if you use preference panes to implement the Preferences menu item of the target application, store the preference pane bundles inside the application’s bundle in the Resources directory. If the preference pane needs to be shared by a suite of applications, store the preference pane bundles in a subdirectory in /Library/Application Support.
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