# markfasheh/duperemove

Tools for deduping file systems

Repository: https://github.com/markfasheh/duperemove
Canonical: https://ross.abutalabs.com/products/duperemove
Language: C
License: GPL-2.0
License Family: copyleft
Last push: 2025-10-11T09:01:54+00:00

## Health v2 (maintenance only)
Score: 50/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 46, release rhythm 28, longevity 100
- inputs: {"age_days": 4887, "days_push": 326, "days_rel": 476, "gap_med": 49.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1005, forks 103 (observed 2026-08-28T04:03:11.703520+00:00)

## What it is
Duperemove is a Linux command-line tool that finds duplicate file extents by hashing file contents and submits them for deduplication via the kernel FIDEDUPRANGE ioctl. It supports incremental runs through a persistent hashfile so unchanged data is not re-hashed.

## Use cases
- free up disk space by deduplicating duplicate file blocks on btrfs or xfs
- find duplicate files and extents on a linux filesystem
- run repeated dedupe scans without re-hashing unchanged files
- dedupe a large directory tree recursively
- reduce storage usage on a backup or media server

## When to choose
- you run Linux with a reflink-capable filesystem like btrfs or xfs and want kernel-level deduplication
- you want incremental dedupe with a persistent hashfile
- you need a fast C tool with multithreaded hashing

## When to avoid
- you are on macOS, Windows, or a filesystem without FIDEDUPRANGE support
- you need cross-platform duplicate file finding rather than block-level dedupe
- you want automatic, scheduled deduplication without scripting it yourself

## Facets
- artifact type: cli-tool
- maturity: active
- function: file-system, compression, cli, developer-tools
- domain: files, developer-tools
- platform: cli
- tags: deduplication, btrfs, xfs, hashfile, storage-optimization, fiduprange, command-line, linux

## Member repositories
- markfasheh/duperemove (main) score 50

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:11.703520+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:13:10.473502+00:00, confidence not recorded.
  - readme: https://github.com/markfasheh/duperemove (fetched 2026-08-28T04:03:11.703520+00:00, sha 9266e70b2baf)
- Data as of 2026-08-30T08:39:29.467469+00:00.