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I remember that there is an utility for GNU/Linux, that given some directory, builds the same directory hierarchy, but with all regular files replaced by symlinks to the corresponding ones.

I can't remember its name.

Yes, I know it's a simple lesson in shell programming, but no reason to reinvent the wheel.

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Possible duplicate of Create symlinks recursively for a whole tree – cfi Apr 6 at 8:16
up vote 2 down vote accepted

cp has a -s flag, which makes symlinks, instead of copying. You can probably combine it with -r, so it recursively links everything, eg.:

cp -rs ./folder ./target/
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Perfect. Thank you very much. – KAction Apr 2 '12 at 4:23

How about some command-line fu? There are a number of ideas on that page.

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