Reading and modify OS X plist file by command line

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OS X uses plist file to store configuration information.

1. to read a plist can use:<span style="white-space:pre"></span>sudo defaults read /Library/Preferences/com.apple.CrashReporter

2. and similarly to write a value to a plist<span style="white-space:pre"></span>sudo defaults write /Library/Preferences/com.apple.CrashReporter SomeKey -bool TRUE

<span style="white-space:pre"></span>sudo defaults write /Library/Preferences/com.apple.CrashReporter SomeKey -string "somevalue"3. and delete<span style="white-space:pre"></span>sudo defaults delete /Library/Preferences/com.apple.CrashReporter SomeKey

You can also use plutil to dump an XML version to stdout:<span style="white-space:pre"></span>plutil -convert xml1 -o - filename.plist

as well as convert between binary and XML formats. Xcode also ships with a plist editor (standalone prior to XCode 4, built-in since then).And if that wasn't enough there's also PlistBuddy, here's an example command to print a particular key 'BluetoothVersionNumber':

/usr/local/bin/PlistBuddy -c Print:BluetoothVersionNumber /Library/Preferences/com.apple.Bluetooth.plist

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