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While attempting to clean up my Air's SSD, the estimable DaisyDisk showed me that 4 GB is being eaten up by Xcode DocSets. I like keeping my friends close and my SDK documentation closer, so I'd be happiest if I could maintain a copy of these DocSets on an external disk, so they're available offline but not cluttering my SSD.

The DocSets currently exist at ~/Library/Developer/Shared/Documentation/DocSets. Is it possible to move the .docset files themselves to a different location (perhaps symlinking to them) without breaking Xcode's doc viewer?

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In Terminal, run

mv ~/Library/Developer/Shared/Documentation/DocSets /Volumes/HDNAME
ln -s /Volumes/HDNAME/DocSets ~/Library/Developer/Shared/Documentation/DocSets

This may take a few minutes to complete.

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