macOS
Homebrewverified · 100%
brew install cksfvlocal Homebrew formula metadata
MacPortsverified · 94%
sudo port install cksfvMacPorts ports tree · sysutils/cksfv/Portfile · source: api.github.com
brew
Install cksfv with Homebrew, apk, apt, dnf, MacPorts, Nix, pacman
File verification utility. Version 1.3.15 via Homebrew; verified from local package data.
install
Additional install commands
Linux
Alpine Linux apkverified · 92%
sudo apk add cksfvAlpine Linux edge package indexes · cksfv · source: dl-cdn.alpinelinux.org
Debian aptverified · 92%
sudo apt install cksfvDebian stable package indexes · cksfv · source: deb.debian.org
Fedora dnfverified · 92%
sudo dnf install cksfvFedora Rawhide package metadata · cksfv · source: dl.fedoraproject.org
Nixverified · 92%
nix profile install nixpkgs#cksfvnixpkgs package indexes · pkgs/by-name/ck/cksfv/package.nix · source: api.github.com
Arch Linux pacmanverified · 92%
sudo pacman -S cksfvArch Linux sync databases · cksfv · source: geo.mirror.pkgbuild.com
overview
Package summary
File verification utility
Project links
Commands and aliases
- cksfv
history
Project history and usage
cksfv is a Unix command-line tool for creating and verifying SFV files, which record CRC32 checksums for file-integrity checks.
Project history
The official changelog records cksfv 1.0 as released for public consumption in May 2000 by Bryan Call, with FreeBSD 3.4 and Red Hat 6.1 working at release time. In 2005 Heikki Orsila took over maintenance after Bryan Call became unreachable, and the current official page names Orsila as maintainer.
The project history is mostly maintenance-oriented: portability fixes, recursive SFV checking, large-file support, man-page work, MinGW/Solaris/OpenBSD fixes, and signed release/tag practices.
Adoption history
The batch input records cksfv across many package managers: Homebrew, Alpine, Debian, Fedora/dnf, MacPorts, Nix, Arch/pacman, and Ubuntu. That breadth matches a small utility whose file-format compatibility made it worth carrying in Unix package collections.
How it is used
The man page documents two main modes: create CRC32 checksum listings, usually redirected to an `.sfv` file, and verify files by recomputing checksums from an SFV listing. The page explicitly warns that CRC32 is not cryptographic and says cksfv should be used for compatibility rather than security.
Why package nerds care
cksfv is package-nerd significant as a classic small Unix compatibility utility: tiny surface area, old file-sharing checksum format, long distro shelf life, and a man page that clearly distinguishes integrity checking from cryptographic verification.
Timeline
- 2000: Version 1.0 released publicly.
- 2004: Version 1.3.1 went into Gentoo Portage according to the changelog.
- 2005: Heikki Orsila took over maintenance.
- 2020: Version 1.3.15 released.
Related projects
- The man page points users toward md5sum and sha1sum as stronger checksum tools for non-SFV use cases.
- The project exists around the SFV file format and CRC32 compatibility rather than as a general cryptographic checksum suite.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 13 platform targets.
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
| Command | Kind | Exposure | Note |
|---|---|---|---|
cksfv | cli | global executable |
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 generated2026-07-08
manager version1.3.15
manager updated
local dataok
upstreamnot checked
latest detectednot detected
https://zakalwe.fi/~shd/foss/cksfv/
- infoNo package-manager update timestamp was available.low confidence
- infoRelease/tag comparison is only available for GitHub repositories.https://zakalwe.fi/~shd/foss/cksfv/none confidence
install metadata
Package metadata
| Package key | brew:cksfv |
|---|---|
| Version | 1.3.15 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/cksfv |
| Homepage | https://zakalwe.fi/~shd/foss/cksfv/ |
| Repository | https://gitlab.com/heikkiorsila/cksfv |
| Upstream docs | https://gitlab.com/heikkiorsila/cksfv/-/blob/master/cksfv.1 |
| License | GPL-2.0-or-later |
| Source archive | https://zakalwe.fi/~shd/foss/cksfv/files/cksfv-1.3.15.tar.bz2 |
| Bottle | available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | cksfv |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
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%
cksfv 1.3.15-2
sfv checker and generator
https://gitlab.com/heikkiorsila/cksfv
sudo apt install cksfv- Section: utils
- Architecture: amd64
- 1 dependencies
- normalized package name match
- Matched by: Cksfv
Nix95%
cksfv
nix profile install nixpkgs#cksfv- normalized package name match
- Matched by: Cksfv
Ubuntu apt95%
cksfv 1.3.15-1
sfv checker and generator
https://gitlab.com/heikkiorsila/cksfv
sudo apt install cksfv- Section: universe/utils
- Architecture: amd64
- 1 dependencies
- normalized package name match
- Matched by: Cksfv
apk95%
cksfv 1.3.15-r3
Simple File Verification
http://zakalwe.fi/~shd/foss/cksfv
sudo apk add cksfv- License: GPL-2.0-or-later
- Architecture: x86_64
- Source Package: cksfv
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Cksfv
apk95%
cksfv-doc 1.3.15-r3
Simple File Verification (documentation)
http://zakalwe.fi/~shd/foss/cksfv
sudo apk add cksfv-doc- License: GPL-2.0-or-later
- Architecture: x86_64
- Source Package: cksfv
- normalized package name match
- Matched by: Cksfv
dnf95%
cksfv 1.3.15-16.fc44
Utility to manipulate SFV files
https://gitlab.com/heikkiorsila/cksfv/
sudo dnf install cksfv- License: GPL-2.0-or-later
- Category: Unspecified
- Architecture: x86_64
- Source Package: cksfv
- 2 dependencies
- 1 provides
- normalized package name match
- Matched by: Cksfv
pacman95%
cksfv 1.3.15-2
SFV (Simple File Verification) Checker
http://zakalwe.fi/~shd/foss/cksfv
sudo pacman -S cksfv- License: GPL-2.0-or-later
- Architecture: x86_64
- 1 dependencies
- normalized package name match
- Matched by: Cksfv
MacPorts95%
cksfv
sudo port install cksfv- normalized package name match
- Matched by: Cksfv
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.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment