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Top Forums Shell Programming and Scripting Extract specific read from a data Post 302385407 by patrick87 on Friday 8th of January 2010 03:32:39 AM
Old 01-08-2010
Extract specific read from a data

Input file:
Code:
#abc_1
SAASFASFGGDSGDSGDSGSDGSDGSDGSDGSDGSDGSDGDS

Output file:
Code:
FASFGGDSGDS

I just want to print out the read from position 5 until position 15 from the data.

Below is the code that I just try but it is failed to get my desired output:
Code:
grep -v '#' input_file | awk '{print substr($0,5,15)}'

Thanks for any advice.
 
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Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSuUser(Contributed Perl DocPerl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3pm)

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 v5.14.2 2012-06-07 Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3pm)

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