Script optimalisation Post: 302339369

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Top Forums UNIX for Dummies Questions & Answers Script optimalisation Post 302339369 by chris01010 on Thursday 30th of July 2009 10:52:51 AM

07-30-2009

Registered User

Script optimalisation

Hi,

I have a script that basically interegates a large file (833594152), extracts data and creates an number of files with data that fits within certain criteria. An example of the scripts is below:

Code:

for number in `cat linenum`

do

    if [ $counter = 1 ]

         then NO=$number
              counter=`expr $counter + 1`

    elif [ $counter != 1 ]

         then marker=$number
              end=`expr $number - 1`

              filename=exfile$counter

              awk -v NO=$NO -v end=$end 'NR == NO, NR == end' $file1 > $filename

              filename2=compfile$counter

              grep "WORD1 WORD2" $filename > $filename2

                   if [ ! -s $filename2 ]

                       then rm $filename
                            rm $filename2

                       else rm $filename2

                   fi

              NO=$marker
              counter=`expr $counter + 1`
    fi
done

The problem is that it takes a long time to run (i'm estimating atleast 6 years, probably more!!), I know that it is quite "clunky" scripting, but does anyone know how I can possibly streamline this. It seems that the AWK statement is the biggest user of CPU both in time and percentage.

I'm presuming it's the file size that's the problem, but any help would be appreciated.

Thanks

Chris[COLOR="#738fbf"]

---------- Post updated at 03:52 PM ---------- Previous update was at 03:31 PM ----------

Please ignore the spelling

Last edited by chris01010; 08-03-2009 at 06:01 AM.. Reason: Bad spelling

chris01010

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locale::script

Locale::Script(3perl)					 Perl Programmers Reference Guide				     Locale::Script(3perl)

NAME

       Locale::Script - standard codes for script identification

SYNOPSIS

	  use Locale::Script;

	  $script  = code2script('phnx');		      # 'Phoenician'
	  $code    = script2code('Phoenician'); 	      # 'Phnx'
	  $code    = script2code('Phoenician',
				 LOCALE_CODE_NUMERIC);	      # 115

	  @codes   = all_script_codes();
	  @scripts = all_script_names();

DESCRIPTION

       The "Locale::Script" module provides access to standards codes used for identifying scripts, such as those defined in ISO 15924.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 15924
       four-letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying scripts. The ones currently supported are:

       alpha
	   This is a set of four-letter (capitalized) codes from ISO 15924 such as 'Phnx' for Phoenician.

	   This code set is identified with the symbol "LOCALE_SCRIPT_ALPHA".

	   The Zxxx, Zyyy, and Zzzz codes are not used.

	   This is the default code set.

       numeric
	   This is a set of three-digit numeric codes from ISO 15924 such as 115 for Phoenician.

	   This code set is identified with the symbol "LOCALE_SCRIPT_NUMERIC".

ROUTINES

       code2script ( CODE [,CODESET] )
       script2code ( NAME [,CODESET] )
       script_code2code ( CODE ,CODESET ,CODESET2 )
       all_script_codes ( [CODESET] )
       all_script_names ( [CODESET] )
       Locale::Script::rename_script  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Script::add_script  ( CODE ,NAME [,CODESET] )
       Locale::Script::delete_script  ( CODE [,CODESET] )
       Locale::Script::add_script_alias  ( NAME ,NEW_NAME )
       Locale::Script::delete_script_alias  ( NAME )
       Locale::Script::rename_script_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Script::add_script_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Script::delete_script_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes man page.

SEE ALSO

       Locale::Codes
       Locale::Constants
       http://www.unicode.org/iso15924/
	   Home page for ISO 15924.

AUTHOR

       See Locale::Codes for full author history.

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

COPYRIGHT

	  Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
	  Copyright (c) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2011 Sullivan Beck

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

perl v5.14.2							    2011-09-26						     Locale::Script(3perl)