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Full Discussion: Substring using cut/awk/sed
Top Forums Shell Programming and Scripting Substring using cut/awk/sed Post 302452091 by sumoka on Thursday 9th of September 2010 06:29:46 AM
Old 09-09-2010
Thanks a ton !

Scrutizer, can you explain how it works ?

Also , I used the following -
Code:
echo ABCDEFGHIJ20100909.txt|awk '{ print substr($0,1,2)","substr($0,3,3)","$0 }'

o/p -

Code:
AB,CDE,ABCDEFGHIJ20100909.txt

unable to get the date, I dnt want to depend on teh location of the date , I can use the code given by felipe. but I want to know.. is it possible using awk ?

Thanks !

Last edited by Scott; 09-13-2010 at 04:35 AM.. Reason: Code tags, please...
 

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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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