cfv – Command-line File Verify

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 a friendly fork of cfv maintained by David Gnedt.

Requirements

Python ≥ 3.5 – older versions might work, but are unsupported. For Python 2 support, see the python2 branch.

Optional

• Python Imaging Library (PIL) or Pillow – only needed if you want to create the dimensions column of .crc files.

Install

You can get the latest releases via the Python Package Index (PyPI) or from the Github releases page. Other distribution ways are work-in-progress, see issue #4.

From PyPI

If you have a working Python installation with pip, you can follow these installation steps:

1. pip install cfv
2. read man page man cfv or read usage cfv -h and have fun ☺️

From Source

Download a snapshot from the Github releases page or checkout the development version via Git.

1. python setup.py install
2. read man page man cfv or read usage cfv -h and have fun ☺️
3. optional: run tests to verify correct operation: cd test; ./test.py

Contributions

Contributions are welcome, just open a pull request ☺️

Alternative Tools

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))

Copying

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