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cfv is a utility to test and create a wide range of checksum verification files.It currently supports testing and creating sfv, sfvmd5, csv, csv2, csv4, md5, bsdmd5, sha1, sha224,sha256, sha384, sha512, torrent and crc files.Test-only support is available for par, par2.

cfv was originally written by Matthew Mueller (original project home).This is afriendly fork of cfv maintained by David Lisa Gnedt.

Python ≥ 3.6 – older versions might work, but are unsupported.For Python 2 support, see thepython2 branch.

• Python Imaging Library (PIL) orPillow – only needed if you want to create thedimensions column of .crc files.

You can get the latest releases via thePython Package Index (PyPI)or from theGithub releases page.Other distribution ways are work-in-progress, seeissue #4.

If you have a working Python installation with pip, you can install via PyPI:

pip install cfv

Download a snapshot from theGithub releases pageor checkout the development version via Git.

python setup.py install# optional: run tests to verify correct operationcdtest; ./test.py

To install the development version fromAUR (maintained by @vestingz):

yay -S cfv-git

A FreeBSD port is available (maintained by @Terry-Kennedy).

To install the pre-built package (updated quarterly, so may be out-of-date):

pkg install cfv

To build from source (make sure your source tree is up-to-date via any of the usual methods):

cd /usr/ports/security/cfvmake; make install; make clean

To update the pre-built package:

pkg upgrade cfv

To update from source (again, make sure your source tree is up-to-date):

portupgrade cfv

To use the latest version included innixpkgs (maintained by @jjtt):

nix-shell -p cfv

Please read the man pageman cfv or the usagecfv -h and have fun☺️

Contributions are welcome, just open a pull request☺️

Here is a community-compiled list of alternative tools that cover some of cfv's functionality (without warranty):

• GNU coreutils *sum: md5sum, sha1sum, sha224sum, sha256sum, sha384sum, sha512sum, ...
• cksfv
• rhash (with-rc does more or less the same thing as cfv, performance is good and it supports most hash formats including bittorrent. It lacks cfv's-m though.)
• aria2c (to verify torrent checksums)
• bsdsfv (limited to 1024 files for some reason)
• pure-sfv (doesn't seem to display progress information, even with-v)
• bcfv (a Bash frontend to checksum programs (SHA, Blake3, MD5))

This program is free software; you can redistribute it and/or modify it underthe terms of the GNU General Public License as published by the Free SoftwareFoundation; either version 2 of the License, or (at your option) any laterversion.See the fileCOPYING for more information.