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DAFixity: Data Accessioner Fixity Checker

DAFixity is a simple file fixity checker designed to work with the Data Accessioner tool. It parses the report generated by Data Accessioner, creates a list of accessioned files and their checksums, then validates those checksums against the accessioned files on disk. It produces a detailed log, as well as a CSV report.


Build prerequisites

  • A recent version of Java (>= 1.8)
  • Maven (>= 3.0)


DAFixity is built using Maven. To build, clone the repository:

git clone

Then execute the following command in the top-level directory:

mvn clean package

A distributable zip file will be built and placed in the target/ subdirectory, with the name dafixity-<version>

For testing purposes, you may run the created executable jar in the target/ folder directly:



Unzip the distribution zip file in the location of your choice. All dependencies are included within the package.


Run dafixity in the dafixity-<version> folder:

$ cd /path/to/dafixity-<version>
$ ./dafixity -r /path/to/da/report -d /path/to/top/of/accession/tree

usage: dafixity [options]
    -r,--report <REPORT>         Path to Data Accessioner report file
    -d,--directory <DIRECTORY>   Parent directory for accession tree in the
    -h,--help                    This help message

The logs are written to logs/dafixity-<YYYYMMDDHHmmss>.log; the report is written to logs/dafixity-report-<YYYYMMDDHHmmss>.csv, where YYYYMMDDHHmmss is the date-time stamp of the beginning of the run.


  1. Fork it!
  2. Create your feature branch: git checkout -b my-new-feature
  3. Commit your changes: git commit -am 'Add some feature'
  4. Push to the branch: git push origin my-new-feature
  5. Submit a pull request


Scott Prater


Copyright © 2017 by Scott Prater.

DAFixity 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 3 of the License, or (at your option) any later version.

DAFixity is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see


Simple file fixity checker for Data Accessioner (



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