fddf

Fast data dupe finder

This is a small Rust command-line program to find duplicate files in a directory recursively. It uses a thread pool to calculate file hashes in parallel.

Duplicates are found by checking size, then (Blake2) hashes of parts of files of same size, then a byte-for-byte comparison.

Build/install

Directly from crates.io with cargo install fddf.

From checkout:

cargo build --release
cargo run --release

Usage

fddf [-s] [-t] [-m SIZE] [-M SIZE] [-v] <rootdir>

-s: report dupe groups in a single line
-t: produce a grand total
-m: minimum size (default 1 byte)
-M: maximum size (default unlimited)
-v: verbose operation

PRs welcome!