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TRaSH-Guides/docs/Hardlinks/Replace-copies-with-hardlin...

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Replace copies with hardlinks

You recently switched to a proper setup that supports Hardlinks and Instant Moves (Atomic-Moves).

And you would like to replace copies with hardlinks ?

If your Operating System supports it you could make use of Jdupes.

Usage

!!! info "" I won't cover every command ‼️

If you want to know what else [Jdupes](https://github.com/jbruchon/jdupes) can do please read the manual.

!!! tip This process can take a long time and a pretty big hit on your resources depending on how big your library is, I did notice the first time it takes longer then the second time. Not sure if this is a cache thing or something else.

- That's why I suggest to do it based on categories (Movies, TV, Music etc).
- I don't suggest to use this on a cloud based setup.
jdupes [options] DIR1 DIR2

This will do a dry run and summarize at the end.

jdupes -rMX onlyext:mp4,mkv,avi "/data/torrents/movies/" "/data/media/movies"

This will hard link all duplicate files without prompting.

jdupes -rLX onlyext:mp4,mkv,avi "/data/torrents/movies/" "/data/media/movies"

!!! bug "" Windows allows a maximum of 1023 hard links per file

!!! Warning The -Q or --quick option only reads each file once, hashes it, and performs comparisons based solely on the hashes. There is a small but significant risk of a hash collision which is the purpose of the failsafe byte-for-byte comparison that this option explicitly bypasses. Do not use it on ANY data set for which any amount of data loss is unacceptable. You have been warned!

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