Does anyone make use of any tools which can search for duplicate files and (assuming they're on the same filesystem) replace the duplicates with hard links to the first copy of the file?
There seem to be a few scripts around but since it'll be messing with my files I'd rather go by recommendation if I can. (The plan is to free up some space on a server which has lots of duplicate images.)
Also, any "gotchas" that should put me off trying this would be appreciated.