This is a proof of concept.
```
$ echo a > hardlinks/a
$ cp hardlinks/{a,b}
$ ln hardlinks/{a,c}
$ cargo run --bin czkawka_cli dup -m 1 --directories $(pwd)/hardlinks -f /dev/stderr > /dev/null
-------------------------------------------------Files with same hashes-------------------------------------------------
Found 1 duplicated files which in 1 groups which takes 2 B.
---- Size 2 B (2) - 2 files
/home/thomas/Development/czkawka/hardlinks/a
/home/thomas/Development/czkawka/hardlinks/b
```
Open:
- Windows support
- Probably this should be a cli option
1e94587de8