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Full Discussion: Comparing two columns
Top Forums Shell Programming and Scripting Comparing two columns Post 302383901 by radoulov on Friday 1st of January 2010 07:29:19 PM
Old 01-01-2010
Hi Scott,

Quote:
Originally Posted by deindorfer
You are mixing and matching my posts.
You're right, I was not clear at all.

Quote:
The second post, the one you are referring to, omits the -l flag, which prevents the problem with the extra output lines, as you show there. you include the -l flag, hence the problem.
Correct, you get the value (and eventually the values concatenated together with no separator) without the trailing newline character.

Quote:
Try it exactly the way I posted it, with -ane

Code:
perl -ane '$F[1]!=$F[0]&&print$F[1]' file

Yes,
with the original sample I get this:

Code:
% perl -ane '$F[1]!=$F[0]&&print$F[1]' infile
13%

With the test input file I was using (more than one record with mismatching fields) I got:

Code:
% cat infile 
1                   1
2                   2
3                   13               
4
10
19                  1
234
% perl -ane '$F[1]!=$F[0]&&print$F[1]' infile
131%

Quote:
Pretty sure you do get not all the empty lines, that way.... let me know.
Correct, sorry for the noise ...

Quote:
I think the third attempt is best anyhow.
Better than this?
Code:
perl -lane '$F[1]!=$F[0]&&$F[1]&&print$F[1]' infile



Regards
Dimitre
 

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LEARN ABOUT CENTOS

locale::codes::langfam

Locale::Codes::LangFam(3)				User Contributed Perl Documentation				 Locale::Codes::LangFam(3)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2013-02-27						 Locale::Codes::LangFam(3)
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