App::UniqFiles - Report duplicate or unique file contents
This document describes version 0.141 of App::UniqFiles (from Perl distribution App-UniqFiles), released on 2023-02-06.
# See uniq-files script
dupe_files(%args) -> [$status_code, $reason, $payload, \%result_meta]
Report duplicate or unique file contents.
This is a thin wrapper to uniq-files. It defaults report_unique to 0 and report_duplicate to 1.
This function is not exported.
Arguments ('*' denotes required arguments):
algorithm => str
What algorithm is used to compute the digest of the content.
The default is to use md5. Some algorithms supported include crc32, sha1, sha256, as well as Digest to use Perl Digest which supports a lot of other algorithms, e.g. SHA-1, BLAKE2b.
If set to '', 'none', or 'size', then digest will be set to file size. This means uniqueness will be determined solely from file size. This can be quicker but will generate a false positive when two files of the same size are deemed as duplicate even though their content may be different.
If set to 'name' then only name comparison will be performed. This of course can potentially generate lots of false positives, but in some cases you might want to compare filename for uniqueness.
authoritative_dirs => array[str]
Denote director(y|ies) where authoritative/"Original" copies are found.
detail => true
Show details (a.k.a. --show-digest, --show-size, --show-count).
digest_args => array
Some Digest algorithms require arguments, you can pass them here.
exclude_empty_files => bool
exclude_file_patterns => array[str]
Filename (including path) regex patterns to include.
files* => array[str]
group_by_digest => bool
Sort files by its digest (or size, if not computing digest), separate each different digest.
include_file_patterns => array[str]
Filename (including path) regex patterns to exclude.
max_size => filesize
Maximum file size to consider.
min_size => filesize
Minimum file size to consider.
recurse => bool
If set to true, will recurse into subdirectories.
report_duplicate => int (default: 1)
Whether to return duplicate items.
Can be set to either 0, 1, 2, or 3.
If set to 0, duplicate items will not be returned.
If set to 1 (the default for dupe-files), will return all the the duplicate files. For example: file1 contains text 'a', file2 'b', file3 'a'. Then file1 and file3 will be returned.
If set to 2 (the default for uniq-files), will only return the first of duplicate items. Continuing from previous example, only file1 will be returned because file2 is unique and file3 contains 'a' (already represented by file1). If one or more --authoritative-dir (-O) options are specified, files under these directories will be preferred.
If set to 3, will return all but the first of duplicate items. Continuing from previous example: file3 will be returned. This is useful if you want to keep only one copy of the duplicate content. You can use the output of this routine to mv or rm. Similar to the previous case, if one or more --authoritative-dir (-O) options are specified, then files under these directories will not be listed if possible.
report_unique => bool (default: 0)
Whether to return unique items.
show_count => bool (default: 0)
Whether to return each file content's number of occurence.
1 means the file content is only encountered once (unique), 2 means there is one duplicate, and so on.
show_digest => true
Show the digest value (or the size, if not computing digest) for each file.
Note that this routine does not compute digest for files which have unique sizes, so they will show up as empty.
show_size => true
Show the size for each file.
Returns an enveloped result (an array).
First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.
Return value: (any)
uniq_files(%args) -> [$status_code, $reason, $payload, \%result_meta]
Given a list of filenames, will check each file size and content for duplicate content. Interface is a bit like the uniq Unix command-line program.
This function is not exported by default, but exportable.
report_duplicate => int (default: 2)
report_unique => bool (default: 1)
Please visit the project's homepage at https://metacpan.org/release/App-UniqFiles.
Source repository is at https://github.com/perlancar/perl-App-UniqFiles.
find-duplicate-filenames from App::FindUtils
move-duplicate-files-to from App::DuplicateFilesUtils, which is basically a shortcut for uniq-files -D -R . | while read f; do mv "$f" SOMEDIR/; done.
uniq-files -D -R . | while read f; do mv "$f" SOMEDIR/; done
Steven Haryanto <firstname.lastname@example.org>
To contribute, you can send patches by email/via RT, or send pull requests on GitHub.
Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:
% prove -l
If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.
This software is copyright (c) 2023, 2022, 2020, 2019, 2017, 2015, 2014, 2012, 2011 by perlancar <email@example.com>.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-UniqFiles
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
To install App::UniqFiles, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell
For more information on module installation, please visit the detailed CPAN module installation guide.