Fixing double entries in "Open with" menu under Mac OS X

Sometimes it is very annoying to see duplicated entries in the "Open with..." menu under MAC OS X, the reason is just the database for file types doesn't refresh for some reason. Now it can be fixed using:

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user

Tested under Mac OS X 10.8 (Mountain Lion).

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