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Full Discussion: using substring in shell script
Top Forums Shell Programming and Scripting using substring in shell script Post 302247889 by cfajohnson on Thursday 16th of October 2008 02:46:55 PM
Old 10-16-2008
Quote:
Originally Posted by kmanivan82
Code:
====================
#! /bin/ksh
############################
#   AFI Monitor Script
############################
. /db2/uszlad48/sqllib/db2profile
export mondir=/home/bmwdev1/script/krishna/arc
export monlog=$mondir/rcbl2_`date +%Y%m%d`.log
# connect to DB
db2 connect to r2pdev user bmwdevup using summer08
while read line
do
trackingnum=`expr substr $line 1 6`


Code:
trackingnum=`expr substr "$line" 1 6`

Quote:
Code:
trackingnumsuffix=`expr substr $line 8 9`
tstmpupdated=`expr substr $line 22 57`
#db2 "SELECT * FROM ZB_RCBL_ERROR_MSG_MIG WHERE TRACKING_NUM = $TRACKING_NUM AND TRACKING_NUM_SUFFIX = $TRACKING_NUM_SUFFIX AND TIMESTAMP_UPDATED = $TIMESTAMP_UPDATED WITH UR" >> new.log
done < "$monlog" 
# disconnect from DB2
db2 terminate
exit 0
====================

The above shell script is not working. It throws error message.

What is the error messsage?

Do you still get it after enclosing $line in quotes?
 

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LEARN ABOUT DEBIAN

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

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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