NAME
    marc-filter - Tool to filter records in MARC dataset.

SYNOPSIS
     marc-filter [-e] [-h] [-i] [-n num] [-o format] [-r] [--version] marc_file search_item [sub_search_item] [value]

DESCRIPTION
    Tool to filter MARC records in big datasets. Could filter by control
    field or field/subfield or leader or material type. Field 008 also
    supports item selectors in the form "008.item", parsed by
    MARC::Field008. Tool could filter by number of output records.

    It supports MARC XML and USMARC files now.

ARGUMENTS
    *       "-e"

            Match field/subfield existence.

    *       "-h"

            Print help.

    *       "-i"

            Invert searching.

    *       "-n num"

            Number of records to output,

            Default value is all records to output.

    *       "-o format"

            Output MARC format.

            Possible formats are ascii, xml.

    *       "-r"

            Use value as Perl regexp.

    *       "--version"

            Print version of script.

    *       "marc_file"

            MARC XML or USMARC file name.

            Input file could be compressed by IO::Uncompress::AnyUncompress
            module. Possibility is to uncompress gzip, zip, bzip2, zstd, xz,
            lzma, lzip, lzf or lzop.

    *       "search_item"

            Search item could be MARC control field or MARC field or
            'leader' string or material type string. Field 008 also supports
            item selectors in the form "008.item".

            Possible field 008 items are:

            *   cataloging_source

            *   date1

            *   date2

            *   date_entered_on_file

            *   language

            *   modified_record

            *   place_of_publication

            *   type_of_date

            Possible material type strings are:

            *   book

            *   computer_file

            *   continuing_resource

            *   map

            *   mixed_material

            *   music

            *   visual_material

    *       "sub_search_item"

            In the case of MARC field this could be a subfield. It's
            optional with "-e".

    *       "value"

            Value to filter. For "008.date1" and "008.date2" it's possible to
            use range syntax in the form "YYYY..YYYY". It's required without
            "-e".

REPOSITORY
    <https://github.com/michal-josef-spacek/App-MARC-Filter>

AUTHOR
    Michal Josef Špaček <mailto:skim@cpan.org>

    <http://skim.cz>

LICENSE AND COPYRIGHT
    © 2022-2026 Michal Josef Špaček

    BSD 2-Clause License

ACKNOWLEDGEMENTS
    Development of this software has been made possible by institutional
    support for the long-term strategic development of the National Library
    of the Czech Republic as a research organization provided by the
    Ministry of Culture of the Czech Republic (DKRVO 2024–2028), Area 11:
    Linked Open Data.

VERSION
    0.12