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Full Discussion: Efficient way to search array in text file by awk
Top Forums Shell Programming and Scripting Efficient way to search array in text file by awk Post 302958290 by siramitsharma on Wednesday 21st of October 2015 03:23:36 AM
Old 10-21-2015
Efficient way to search array in text file by awk
I have one array SPLNO with approx 10k numbers.Now i want to search the subscriber number from MDN.TXT file (containing approx 1.5 lac record)from the array.if subscriber number found in array it will perform below operation.my issue is that it's taking more time because for one number it's search whole array of 10k records. therefore for 1.5 lac records it's looping around (1.5lac*10K). please suggest efficient ways.

Sample SPLNO.TXT:
Code:
918542054921|30|1|2
918542144944|12|1|2
854215595|12|1|2
918542166966|12|1|2
854225595|12|1|2
918542355955|12|1|2
918542455955|12|1|2
918542555955|12|1|2
918542955955|12|1|2

Sample MDN.TXT:
Code:
8542166966
8542355955
8542555955

Code is
Code:
awk -F"|"  'FNR==1 { ++counter}
counter==1 {SPLNOPULSE[$1]=$4;SPLNOAMT[$1]=$3;SPLNOMAXLEN[$1]=$2;next}
{
for ( mdn in SPLNOMAXLEN)
        {
         if ( ($1 ~ "^"mdn && length($1) <=SPLNOMAXLEN[mdn]) || ("91"$1 ~ "^"mdn && length("91"$1) <=SPLNOMAXLEN[mdn]) )
              {                              
                print found
               }
         else
                print not found
        }                             
 } ' SPLNO.TXT MDN.TXT

 

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LEARN ABOUT MOJAVE

net::dns::rr::txt5.18

Net::DNS::RR::TXT(3)					User Contributed Perl Documentation				      Net::DNS::RR::TXT(3)

NAME

       Net::DNS::RR::TXT - DNS TXT resource record

SYNOPSIS

	   use Net::DNS;
	   $rr = new Net::DNS::RR( 'name TXT  txtdata ...' );

	   $rr = new Net::DNS::RR( name    => 'name',
				   type    => 'TXT',
				   txtdata => 'single text string'
				   );

	   $rr = new Net::DNS::RR( name    => 'name',
				   type    => 'TXT',
				   txtdata => [ 'multiple', 'strings', ... ]
				   );

	   use utf8;
	   $rr = new Net::DNS::RR( 'jp TXT    XXXXXXXXXXXX' );

DESCRIPTION

       Class for DNS Text (TXT) resource records.

METHODS

       The available methods are those inherited from the base class augmented by the type-specific methods defined in this package.

       Use of undocumented package features or direct access to internal data structures is discouraged and could result in program termination or
       other unpredictable behaviour.

   txtdata
	   $string = $rr->txtdata;
	   @list   = $rr->txtdata;

	   $rr->txtdata( @list );

       When invoked in scalar context, txtdata() returns the descriptive text as a single string, regardless of the number of elements.

       In a list context, txtdata() returns a list of the text elements.

COPYRIGHT

       Copyright (c)2011 Dick Franks.

       All rights reserved.

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

       Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.

SEE ALSO

       perl, Net::DNS, Net::DNS::RR, RFC1035 Section 3.3.14, RFC3629

perl v5.18.2							    2014-01-16						      Net::DNS::RR::TXT(3)
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