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Top Forums Shell Programming and Scripting Using Diff to compare 2 arrays Post 302874233 by newbie2010 on Thursday 14th of November 2013 01:10:18 PM
Old 11-14-2013
Thanks!

Your last question, where you mention please let me know "letter by letter" how you typed the command made me think that my typing was bad. I found that the second cat statement did not have a space. Putting a space made it work.

Code:
)   <(cat /tmp/

instead of

Code:
) <(cat /tmp/

This User Gave Thanks to newbie2010 For This Post:
 

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Array::Diff(3pm)					User Contributed Perl Documentation					  Array::Diff(3pm)

NAME
Array::Diff - Find the differences between two arrays SYNOPSIS
my @old = ( 'a', 'b', 'c' ); my @new = ( 'b', 'c', 'd' ); my $diff = Array::Diff->diff( @old, @new ); $diff->count # 2 $diff->added # [ 'd' ]; $diff->deleted # [ 'a' ]; DESCRIPTION
This module compares two arrays and returns the added or deleted elements in two separate arrays. It's a simple wrapper around Algorithm::Diff. And if you need more complex array tools, check Array::Compare. METHODS
new () Create a new "Array::Diff" object. diff ( OLD, NEW ) Compute the differences between two arrays. The results are stored in the "added", "deleted", and "count" properties that may be examined using the corresponding methods. This method may be invoked as an object method, in which case it will recalculate the differences and repopulate the "count", "added", and "removed" properties, or as a static method, in which case it will return a newly-created "Array::Diff" object with the properies set appropriately. added ( [VALUES ] ) Get or set the elements present in the "NEW" array and absent in the "OLD" one at the comparison performed by the last "diff()" invocation. deleted ( [VALUES] ) Get or set the elements present in the "OLD" array and absent in the "NEW" one at the comparison performed by the last "diff()" invocation. count ( [VALUE] ) Get or set the total number of added or deleted elements at the comparison performed by the last "diff()" invocation. This count should be equal to the sum of the number of elements in the "added" and "deleted" properties. SEE ALSO
Algorithm::Diff AUTHOR
Daisuke Murase <typester@cpan.org> COPYRIGHT AND LICENSE
Copyright (c) 2009 by Daisuke Murase. 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. perl v5.10.1 2010-10-08 Array::Diff(3pm)
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