# 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 ```sh sudo av install brew:cksfv ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install cksfv ``` Evidence: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install cksfv ``` Evidence: MacPorts ports tree: sysutils/cksfv/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - apk (92%): ```sh sudo apk add cksfv ``` Evidence: Alpine Linux edge package indexes: cksfv from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz - Debian apt (92%): ```sh sudo apt install cksfv ``` Evidence: Debian stable package indexes: cksfv from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - dnf (92%): ```sh sudo dnf install cksfv ``` Evidence: Fedora Rawhide package metadata: cksfv from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst - Nix (92%): ```sh nix profile install nixpkgs#cksfv ``` Evidence: nixpkgs package indexes: pkgs/by-name/ck/cksfv/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - pacman (92%): ```sh sudo pacman -S cksfv ``` Evidence: Arch Linux sync databases: cksfv from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz ## Package facts - **Package key:** brew:cksfv - **Package manager:** Homebrew - **Package manager page:** - **Version:** 1.3.15 - **Source summary:** File verification utility - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** GPL-2.0-or-later - **Source archive:** - **Generated:** 2026-07-08T18:08:21+00:00 ## Executables - cksfv (cli) - cksfv (alias) ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura ## Freshness - Page generated: 2026-07-08 - Package-manager version: 1.3.15 - Local data: ok - Upstream repository: https://zakalwe.fi/~shd/foss/cksfv/ - info: No package-manager update timestamp was available. - info: Release/tag comparison is only available for GitHub repositories. ## 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 Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** cksfv - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Other Package-Manager Records - Debian apt - cksfv - 1.3.15-2: normalized package name match | Debian stable package indexes: cksfv from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | sfv checker and generator | https://gitlab.com/heikkiorsila/cksfv - Nix - cksfv: normalized package name match | nixpkgs package indexes: pkgs/by-name/ck/cksfv/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - cksfv - 1.3.15-1: normalized package name match | Ubuntu 24.04 LTS package indexes: cksfv from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | sfv checker and generator | https://gitlab.com/heikkiorsila/cksfv - apk - cksfv - 1.3.15-r3: normalized package name match | Alpine Linux edge package indexes: cksfv from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | Simple File Verification | http://zakalwe.fi/~shd/foss/cksfv - apk - cksfv-doc - 1.3.15-r3: normalized package name match | Alpine Linux edge package indexes: cksfv-doc from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz | Simple File Verification (documentation) | http://zakalwe.fi/~shd/foss/cksfv - dnf - cksfv - 1.3.15-16.fc44: normalized package name match | Fedora Rawhide package metadata: cksfv from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst | Utility to manipulate SFV files | https://gitlab.com/heikkiorsila/cksfv/ - pacman - cksfv - 1.3.15-2: normalized package name match | Arch Linux sync databases: cksfv from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | SFV (Simple File Verification) Checker | http://zakalwe.fi/~shd/foss/cksfv - MacPorts - cksfv: normalized package name match | MacPorts ports tree: sysutils/cksfv/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Related links - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Networking and protocol packages](https://www.automicvault.com/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [Homebrew utility packages](https://www.automicvault.com/pkg/brew-utility-packages/) - Matched Homebrew package provider. - [Secret-risk packages](https://www.automicvault.com/pkg/secret-risk-packages/) - Matched curated package taxonomy and local package facts. - [bsdsfv](https://www.automicvault.com/pkg/brew/bsdsfv/) - Shares av.db curated category or tags: checksums, cli, file-verification, sfv, system. - [par2](https://www.automicvault.com/pkg/brew/par2/) - Shares av.db curated category or tags: cli, file-verification, system. - [abduco](https://www.automicvault.com/pkg/brew/abduco/) - Shares av.db curated category or tags: cli, system. - [acl](https://www.automicvault.com/pkg/brew/acl/) - Shares av.db curated category or tags: cli, system. - [acpica](https://www.automicvault.com/pkg/brew/acpica/) - Shares av.db curated category or tags: cli, system. - [afio](https://www.automicvault.com/pkg/brew/afio/) - Shares av.db curated category or tags: cli, system. - [afsctool](https://www.automicvault.com/pkg/brew/afsctool/) - Shares av.db curated category or tags: cli, system. - [afuse](https://www.automicvault.com/pkg/brew/afuse/) - Shares av.db curated category or tags: cli, system. - [cahute](https://www.automicvault.com/pkg/brew/cahute/) - Local package facts share a topical domain. Shared terms: cli, file, system. - [chrony](https://www.automicvault.com/pkg/brew/chrony/) - Local package facts share a topical domain. Shared terms: cli, system. ## Combined YAML source View the package source record on GitHub. [combined/cksfv.yml](https://github.com/automic-vault/db/blob/main/combined/cksfv.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph