BagIt Notes

Note: These notes are from Day 17 (6/26/24) of the logbook.

BagIt Overview

• A hierarchical file packaging format designed for the reliable transfer and storage of digital content
• Provides a standardized way to package files and metadata into bags for transfer and storage
• Each file in a BagIt package is accompanied by a checksum.
  • Ensures that files can be validated for integrity upon receipt or retrieval, detecting any corruption or alteration.
• BagIt packages are designed to be both human-readable and machine-readable, making them accessible and easy to use
• Bags can include metadata files that describe the contents and context of the data
  • useful for data management and preservation

BagIt Structure

1. Bagit.txt
   • Contains information about the bag itself, such as the version of the BagIt specification used and character encoding]
2. Manifest files
   • Lists of files in the bag and their corresponding checksums
   • Used to verify the integrity of the files in the bag
3. Data Directory
   • Contains the actual files being packaged
4. Tag files
   • Additional metadata files that provide information about the bag and its contents
   • Can include information such as provenance, rights, and preservation metadata

Example Directory Structure:

my_bag/
├── bagit.txt
├── bag-info.txt
├── manifest-md5.txt
└── data/
    ├── file1.txt
    ├── file2.jpg
    └── subdirectory/
        └── file3.pdf

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