How to Unhide the Library Folder on a Mac

From Mac OS X Lion 10.7, the “Library” folder located within every user’s home folder, was made invisible. As a developer we need this folder to visible to deal with the supporting files of applications. 

Ex: SQLite files generated by the Core Data, Document folder of the iOS app etc are avilable inside the Library folder.

To unhide the library folder, you should open Terminal app and use the following command.

chflags nohidden ~/Library

Note : - Apple used to make the folder invisible again with every System update.