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Full Discussion: Add substring in a file containing fixed length record.
Top Forums Shell Programming and Scripting Add substring in a file containing fixed length record. Post 302615945 by Devesh5683 on Friday 30th of March 2012 09:40:09 AM
Old 03-30-2012
Thanks for the reply..

The script:
Code:
awk 'BEGIN {sum_a=0;sum_b=0;a=substr($0,389,3);b=substr($0,399,3) }
{
printf"%d\t\t%d",a,b;
sum_a = sum_a+a;
sum_b = sum_b+b;
}
END {printf"%d\t\t%d",sum_a,sum_b}

'

=> The sample fixed length srting in the question is a continuous string containing spaces.
Last edited by Franklin52; 03-31-2012 at 02:41 PM.. Reason: Please use code tags for data and code samples, thank you
 

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LEARN ABOUT CENTOS

perl::critic::policy::builtinfunctions::prohibitlvaluesubstr

Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSuUser(Contributed Perl DocumPerl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr - Use 4-argument "substr" instead of writing "substr($foo, 2, 6) = $bar".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Conway discourages the use of "substr()" as an lvalue, instead recommending that the 4-argument version of "substr()" be used instead.

	   substr($something, 1, 2) = $newvalue;     # not ok
	   substr($something, 1, 2, $newvalue);      # ok

       The four-argument form of "substr()" was introduced in Perl 5.005.  This policy does not report violations on code which explicitly
       specifies an earlier version of Perl (e.g. "use 5.004;").

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       "substr" in perlfunc (or "perldoc -f substr").

       "4th argument to substr" in perl5005delta

AUTHOR

       Graham TerMarsch <graham@howlingfrog.com>

COPYRIGHT

       Copyright (c) 2005-2011 Graham TerMarsch.  All rights reserved.

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

perl v5.16.3							    2014-06-09	   Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3)
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