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Possible Duplicate:
How to show hidden files and folders in finder?

How do I show the hidden files in OS X 10.7 Lion?

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marked as duplicate by bmike, Kyle Cronin Jul 25 '11 at 21:35

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
The hidden preference here is the same as other recent OS X. - changing lion tag to OS X – bmike Jul 25 '11 at 19:40
    
what about the user's library files? – Samantha Catania Jul 26 '11 at 4:19
    
There's a question for that too :-) apple.stackexchange.com/q/17797/5472 – bmike Jul 26 '11 at 14:48
up vote 3 down vote accepted

Open Terminal.app (Applications > Utilities) and type the following commands:

defaults write com.apple.finder AppleShowAllFiles TRUE
killall Finder

To undo re-open Terminal.app and run

defaults write com.apple.finder AppleShowAllFiles FALSE
killall Finder
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