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Full Discussion: Compare specific columns between two files having different layouts
Top Forums Shell Programming and Scripting Compare specific columns between two files having different layouts Post 302451845 by felipe.vinturin on Wednesday 8th of September 2010 07:55:27 AM
Old 09-08-2010
Here is a simple way:

Code:
open FIRFILE "file1.txt" or die "Unable to open file: [$!]";
open SECFILE "file2.txt" or die "Unable to open file: [$!]";

# Start with empty hashes
my %firHash = ();
my %secHash = ();

# Fill the first hash
while (<FIRFILE>)
{
	@fileColumns = split(/,/);
	my $ident = $fileColumns[0];
	
	$firHash{$ident} = $_;
}

# Fill the second hash
while (<SECFILE>)
{
	@fileColumns = split(/,/);
	my $ident = $fileColumns[0];
	
	$secHash{$ident} = $_;
}

for (my($secHashKey, $secHashValue) = each(%secHash))
{
	$firHashValue = $firHash{$secHashKey};
	
	# $firHashValue
	# $secHashValue
	# Here you can compare the values you need!
}

Regards.
This User Gave Thanks to felipe.vinturin For This Post:
gpsridhar
 

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LEARN ABOUT SUSE

ident

ident(n)						  Identification protocol client						  ident(n)

__________________________________________________________________________________________________________________________________________________

NAME

       ident - Ident protocol client

SYNOPSIS

       package require Tcl  8.3

       package require ident  ?0.42?

       ::ident::query socket ?callback?

_________________________________________________________________

DESCRIPTION

       The   ident   package   provides   a   client   implementation	of  the  ident	protocol  as  defined  in  RFC	1413  (http://www.rfc-edi-
       tor.org/rfc/rfc1413.txt).

       ::ident::query socket ?callback?
	      This command queries the ident daemon on the remote side of the given socket, and returns the result of the query as  a  dictionary.
	      Interpreting the dictionary as list the first key will always be resp-type, and can have one of the values USERID, ERROR, and FATAL.
	      These response types have the following meanings:

	      USERID This indicates a successful response. Two more keys and associated values are returned, opsys, and user-id.

	      ERROR  This means the ident server has returned an error.  A second key named error is present whose value contains  the	error-type
		     field from the server response.

	      FATAL  Fatal errors happen when no ident server is listening on the remote side, or when the ident server gives a response that does
		     not conform to the RFC. A detailed error message is returned under the error key.

BUGS, IDEAS, FEEDBACK
       This document, and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the category ident of
       the  Tcllib  SF	Trackers [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have for
       either package and/or documentation.

KEYWORDS

       ident, identification, rfc 1413

COPYRIGHT

       Copyright (c) 2004 Reinhard Max <max@tclers.tk>

ident								       0.42								  ident(n)
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