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brew / rank 12479

Install unyaffs with Homebrew, apt, Nix

Extract files from a YAFFS2 filesystem image. Version 0.9.7 via Homebrew; verified from local package data. Also installable with debian: sudo apt install unyaffs.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install unyaffs

local Homebrew formula metadata

Linux

Debian aptverified · 92%
sudo apt install unyaffs

Debian stable package indexes · unyaffs · source: deb.debian.org

Nixverified · 92%
nix profile install nixpkgs#unyaffs

nixpkgs package indexes · pkgs/by-name/un/unyaffs/package.nix · source: api.github.com

overview

Package summary

Extract files from a YAFFS2 filesystem image

Commands and aliases

  • unyaffs

history

Project history and usage

unyaffs is a small extractor for YAFFS2 filesystem images, mainly useful to people inspecting embedded or Android-era NAND flash images rather than to general archive users.

Project history

The available upstream README says unyaffs was based on work from the YAFFS project, that the original implementation was by Kai Wei and hosted on Google Code, and that Bernhard Ehlers started a fork after the original project became inactive. A public mirror records the project as an extraction tool for YAFFS2 images created by mkyaffs2image.

The source-level history in the public mirror records v0.8 in August 2011 and v0.9 in September 2011. The README presents it as a conventional C utility for Unix-like systems with a make-based build.

Adoption history

Homebrew, Debian, Nix, and Ubuntu packaging in the supplied input show that unyaffs stayed available mostly through distribution package sets. That is typical for firmware-forensics utilities: small upstream, occasional packaging, and long shelf life because old image formats continue to appear.

How it is used

The README documents extraction of all files from a YAFFS2 filesystem image, optional layout selection, listing without extraction, verbose listings, standard-input support, and restoration of permissions, times, ownership, links, and special files where the host OS permits it.

Why package nerds care

The package is notable in a narrow niche: unpacking historical Android, embedded Linux, and NAND-flash images where YAFFS2 appears. Package maintainers care because it provides a single-purpose CLI that can be installed from general-purpose package managers instead of being recovered from archived Google Code downloads.

Timeline

  • 2008: Source comments in the mirrored code record an initial version upload to Google Code.
  • 2011: v0.8 and v0.9 tags appear in the public mirror.
  • 2011: Public mirror repository created.
  • 2026: Homebrew input still lists unyaffs as packaged.

Related projects

  • The README ties unyaffs to the YAFFS project and mkyaffs2image. Other tools in the same niche include yaffs2utils and YAFFS parsers, but those are outside the official unyaffs sources used here.

security posture

Risk level: blue

broad file, network, media, or database tool signal.

Risk classifier

blue risk · medium confidence · tool

Why

  • broad file, network, media, or database tool signal

Signals

  • text:image

Install behavior

  • No Homebrew bottle metadata was recorded.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

CommandKindExposureNote
unyaffsexecutableindexed executableDiscovered from the local executable index.

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-08-03
manager version0.9.7
manager updated
local dataunknown
upstreamnot available
latest detectednot detected
  • okNo freshness warnings were generated.

install metadata

Package metadata

Package keybrew:unyaffs
Version0.9.7
Package managerHomebrew
Homepagehttps://packages.debian.org/sid/unyaffs
Bottlenot recorded
Servicenone declared

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Debian apt95%

unyaffs 0.9.7-1

Extracts files from a YAFFS2 filesystem image

https://github.com/ehlers/unyaffs

sudo apt install unyaffs
  • Section: devel
  • Architecture: amd64
  • 1 dependencies
  • normalized package name match
  • Matched by: Unyaffs
Debian stable package indexes · deb.debian.org · Debian stable package indexes: unyaffs from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Nix95%

unyaffs

nix profile install nixpkgs#unyaffs
  • normalized package name match
  • Matched by: Unyaffs
nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/un/unyaffs/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
Ubuntu apt95%

unyaffs 0.9.7-0.2

Extracts files from a YAFFS2 filesystem image

https://github.com/ehlers/unyaffs

sudo apt install unyaffs
  • Section: universe/devel
  • Architecture: amd64
  • 1 dependencies
  • normalized package name match
  • Matched by: Unyaffs
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: unyaffs from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Used sources

  • Geiger risk classifier
  • cross-ecosystem install command graph
  • curated package history
  • external package-manager database matches
  • pkg.so package database
  • pkgdb category and tag curation