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Top Forums Shell Programming and Scripting shell script to compare file contents Post 302447499 by deedaz on Monday 23rd of August 2010 10:39:47 AM
Old 08-23-2010
shell script to compare file contents

Hello

Has anyone got an example shell script that I can use to compare the contents of two files.

The files should contain the same contents, eg.

file1.txt
Code:
apple
pear
grape

file2.txt
Code:
apple
pear
grape

If the file2.txt is different I want to error on this or log it into another file.


Dee

Moderator's Comments:
Mod Comment Use code tags please - having 12 posts you should be aware of them.

Last edited by zaxxon; 08-23-2010 at 12:13 PM..
 

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YAML::Node(3)						User Contributed Perl Documentation					     YAML::Node(3)

NAME
YAML::Node - A generic data node that encapsulates YAML information SYNOPSIS
use YAML; use YAML::Node; my $ynode = YAML::Node->new({}, 'ingerson.com/fruit'); %$ynode = qw(orange orange apple red grape green); print Dump $ynode; yields: --- !ingerson.com/fruit orange: orange apple: red grape: green DESCRIPTION
A generic node in YAML is similar to a plain hash, array, or scalar node in Perl except that it must also keep track of its type. The type is a URI called the YAML type tag. YAML::Node is a class for generating and manipulating these containers. A YAML node (or ynode) is a tied hash, array or scalar. In most ways it behaves just like the plain thing. But you can assign and retrieve and YAML type tag URI to it. For the hash flavor, you can also assign the order that the keys will be retrieved in. By default a ynode will offer its keys in the same order that they were assigned. YAML::Node has a class method call new() that will return a ynode. You pass it a regular node and an optional type tag. After that you can use it like a normal Perl node, but when you YAML::Dump it, the magical properties will be honored. This is how you can control the sort order of hash keys during a YAML serialization. By default, YAML sorts keys alphabetically. But notice in the above example that the keys were Dumped in the same order they were assigned. YAML::Node exports a function called ynode(). This function returns the tied object so that you can call special methods on it like ->keys(). keys() works like this: use YAML; use YAML::Node; %$node = qw(orange orange apple red grape green); $ynode = YAML::Node->new($node); ynode($ynode)->keys(['grape', 'apple']); print Dump $ynode; produces: --- grape: green apple: red It tells the ynode which keys and what order to use. ynodes will play a very important role in how programs use YAML. They are the foundation of how a Perl class can marshall the Loading and Dumping of its objects. The upcoming versions of YAML.pm will have much more information on this. AUTHOR
Ingy dA~Xt Net <ingy@cpan.org> COPYRIGHT
Copyright (c) 2006. Ingy dA~Xt Net. All rights reserved. Copyright (c) 2002. Brian Ingerson. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See <http://www.perl.com/perl/misc/Artistic.html> perl v5.12.1 2010-01-03 YAML::Node(3)
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