The BagIt Transfer Utility is the command-line equivalent of Bagger. Using the BagIt protocol developed by the Library of Congress and the California Digital Library through the National Digital Information Infrastructure and Preservation Program, BagIt is used by repositories for the purpose of validation and transfer of "bagged" data.
BagIt and the more user-friendly GUI Bagger are widely used by repositories for the transfer of digital content across media. Using the BagIt protocol, both tools are designed to document bit-level maintenance of files. A manifest is created of the files