NAME "File::Shuffle" - Randomly shuffle the lines in a file. SYNOPSIS use File::Temp qw(tempfile); use File::Shuffle qw(fileShuffle); use Data::Dump qw(dump); my ($handle, $inputFile) = tempfile(); print $handle join("\n", 0..9, ''); close $handle; fileShuffle (inputFile => $inputFile); open ($handle, '<', $inputFile); my @lines = <$handle>; close $handle; print @lines; DESCRIPTION "File::Shuffle" provides the routine "fileShuffle" to randomly shuffle the lines in a file. SUBROUTINES "fileShuffle" The subroutine "fileShuffle" randomly shuffles the lines in a file with the following parameters: "inputFile" inputFile => '...' "inputFile" holds the path to the file whose lines are to be shuffled; if it does not exist or if it is not a file an exception is thrown. "outputFile" outputFile => '...' "outputFile" is the file the shuffled lines are to be written to, it may equal "inputFile"; the default is "inputFile". "tempDirectory" tempDirectory => File::Temp::tempdir() "tempDirectory" is a temporary directory that intermediate files are written to if the "inputFile" is too large to shuffle using only internal memory; the default is set using File::Temp::tempdir(). "encoding" encoding => '' "encoding" is the encoding to used when openning the input and output files; the default is the the system default of the Perl "open" function. "fileSizeBound" fileSizeBound => 1000000 If the input file contains less than "fileSizeBound" bytes, the file will be shuffled entirely using internal memory, otherwise Sort::External is used to shuffle the lines in the file. INSTALLATION Use CPAN to install the module and all its prerequisites: perl -MCPAN -e shell cpan[1]> install File::Shuffle BUGS Please email bugs reports or feature requests to "bug-file-shuffle@rt.cpan.org", or through the web interface at . The author will be notified and you can be automatically notified of progress on the bug fix or feature request. AUTHOR Jeff Kubina COPYRIGHT Copyright (c) 2009 Jeff Kubina. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. KEYWORDS file, permute, randomize, shuffle SEE ALSO Sort::External