Set preferences, the macOS user defaults system works with both the OS and with individual applications.
- Macos Set Default Application For Any Unknown File Online
- Macos Set Default Application For Any Unknown File Mac
If you change a default that belongs to a running application, the application won't see the change and might even overwrite the default.
Mar 25, 2019 Scroll down to the bottom of “Default apps” settings screen and click on the link on “Choose default apps by file type”. You will see a huge list of file extensions and the application you can use to open each file type. For example, the default app to open.pdf file is Microsoft Edge. Feb 05, 2020 Mail is likely the default email app on your Mac, but just in case you have others downloaded, you can set the default reader. Here's how: Launch Mail from your dock or the Finder. Click Mail in the menu bar at the top of the screen. Click Preferences. Click the dropdown next to Default Mail Reader. Click the app you'd like to set as the default. Sep 20, 2009 RCDefaultApp is a Mac OS X 10.2 or later preference pane that allows a user to set the default application used for various URL schemes, file extensions, file types, MIME types, and Uniform Type Identifiers (or UTIs; MacOS 10.4 only). MacOS X uses the extension and file type settings to choose the application when opening a file in Finder, while Safari and other applications use the URL. May 20, 2019 In Microsoft Outlook 2016 for Mac running on Mac OS X Yosemite (10.10) or later versions, you cannot set Outlook as the default application. In Outlook Preferences, under General, you enable the Make Outlook the default application for e-mail, calendar, and contacts option.
In general you should close an application before changing its defaults, in the case of Dock and Finder defaults - restart them after applying the default with the killall command :
Restart the Dock: killall Dock
Restart the Finder: killall Finder
Restart the Dock: killall Dock
Restart the Finder: killall Finder
Data Types
![File File](/uploads/1/2/6/1/126170827/735736435.png)
defaults write ... -bool true
is not the same as defaults write ... true
The first will write a boolean value, while the second will write a string,
you can check the Data Type of an existing default with defaults read-type
is not the same as defaults write ... true
The first will write a boolean value, while the second will write a string,
you can check the Data Type of an existing default with defaults read-type
Preferences are stored in a set of files under ~/Library/Preferences, however using the defaults command is much safer than manually editing a .plist file. The cfprefsd daemon manages and caches updates to preference files. If you modify the file directly, the changes will not propagate through the cache managed by the daemon.
The defaults command can read any plist file with a path minus the .plist extension
Examples:
Disable the macOS Crash reporter (Crash dialog that normally appears after an application halts.)
$ defaults write com.apple.CrashReporter DialogType none
$ defaults write com.apple.CrashReporter DialogType none
To re-enable the crash reporter (default)
$ defaults write com.apple.CrashReporter DialogType prompt
$ defaults write com.apple.CrashReporter DialogType prompt
Read values from .plist file by specifying the path minus the .plist extension:
$ defaults read /Applications/Burn.app/Contents/Info CFBundleIdentifier
com.kiwifruitware.Burn
$ defaults read /Applications/Burn.app/Contents/Info CFBundleIdentifier
com.kiwifruitware.Burn
Macos Set Default Application For Any Unknown File Online
$ defaults read /Applications/Burn.app/Contents/Info CFBundleVersion
22
22
A long list of preferences that can be set in macOS and macOS applications can be found over in the syntax section.
Defaults allows users to read, write, and delete macOS user defaults from a command-line shell. macOS applications and other programs use the defaults system to record user preferences and other information that must be maintained when the applications aren't running (such as default font for new documents, or the position of an Info panel). Some settings can be changed through an application’s Preferences, but many are not shown in the GUI but can still be changed using defaults.
In most cases the current value can be read with defaults read… it is worth checking the current setting before writing a new default (with defaults write…) just in case you want to revert to the old settings. If defaults read… returns 'does not exist' that means there is no setting currently stored, you can remove a setting with defaults delete…
Macos Set Default Application For Any Unknown File Mac
User defaults belong to domains, which typically correspond to individual applications. Each domain has a dictionary of keys and values representing its defaults; for example, 'Default Font' = 'Helvetica'. Keys are always strings, but values can be complex data structures comprising arrays, dictionaries, strings, and binary data. These data structures are stored as XML Property Lists.
Though all applications, system services, and other programs have their own domains, they also share a domain named NSGlobalDomain. If a default isn't specified in the application's domain, but is specified in NSGlobalDomain, then the application uses the value in that domain.
A property list (or plist) can contain multiple values:
Defaults can be structured in very complex ways, making it difficult for the user to decipher or modify them.
“I am a leader by default, only because nature does not allow a vacuum” ~ Desmond Tutu
Related macOS commands:
PlistBuddy - read and write values to plists
Awesome macOS Command Line - A large collection of macOS defaults.
Show hidden files.scpt - Toggle the display of hidden files in Finder (will restart finder).
Awesome macOS Command Line - A large collection of macOS defaults.
Show hidden files.scpt - Toggle the display of hidden files in Finder (will restart finder).
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