X7ROOT File Manager
Current Path:
/usr/share/doc/perl-Digest-SHA-5.85/examples
usr
/
share
/
doc
/
perl-Digest-SHA-5.85
/
examples
/
📁
..
📄
dups
(1.31 KB)
Editing: dups
#!/usr/bin/perl eval 'exec /usr/bin/perl -S $0 ${1+"$@"}' if 0; # not running under some shell # dups: simple script for showing duplicate files =head1 NAME dups - Show Duplicate Files =head1 SYNOPSIS Usage: dups files ... dups is a fast script for discovering duplicate files. It achieves its efficiency by comparing file digests rather than the file contents themselves, the latter being much larger in general. The NIST Secure Hash Algorithm (SHA) is highly collision-resistant, meaning that two files with the same SHA digest have an almost certain probability of being identical. The dups script works by computing the SHA-1 digest of each file and looking for matches. The search can reveal more than one set of duplicates, so the output is written as follows: match1_file1 match1_file2 match1_file3 etc. match2_file1 match2_file2 etc. =head1 AUTHOR Mark Shelor <mshelor@cpan.org> =head1 SEE ALSO Perl module L<Digest::SHA> or L<Digest::SHA::PurePerl> =cut use strict; use Digest::SHA; die "usage: dups files ...\n" unless @ARGV; my @files = grep { -f $_ } @ARGV; my %dups; for (@files) { my $digest = Digest::SHA->new->addfile($_, "b")->hexdigest; push(@{$dups{$digest}}, $_); } for (keys %dups) { my $ref = $dups{$_}; if (scalar(@$ref) > 1) { print join("\n\t", @$ref), "\n\n"; } }
Upload File
Create Folder