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Full Discussion: Passing dynamic variable within another variable.
Top Forums Shell Programming and Scripting Passing dynamic variable within another variable. Post 302881580 by Cyril Jos on Monday 30th of December 2013 10:45:34 AM
Old 12-30-2013
Passing dynamic variable within another variable.
I have a small program which needs to pass variable dynamically to form the name of a second variable whose value wil be passed on to a third variable.

***************** Program Start ******************

Code:
LOC1=/loc1
PAT1IN=/loc2
PAT2IN=/loc3
if [ -f $LOC1/* ]; then
for fpattern in `cat $script/filepattern.txt`
do 
for ffilename in `find $LOC1/ -type f`
do
filename=`echo $ffilename | cut -d "/" -f 3`
file=`echo $filename | cut -d "_" -f 1`
case "$file" in
$fpattern)
INLOC=${${file}IN}
echo $INLOC
echo $filename
;;
esac
done
done 
else
echo "Exiting Job as no files present."
exit
fi

***************** Program End ******************

List of files present in the /loc1 are as below
Code:
/loc1/PAT1_test.txt
/loc1/PAT2_test1.txt

content of filepattern.txt are as below

Code:
PAT1
PAT2

when i execute the program, i keep getting this error

Code:
INLOC=${${file}IN}: bad substitution

Please let me know if i am doing something wrong. or is there an alternate way to achieve this without having to use to much variables.

expected output is:
Code:
/loc2
PAT1_test.txt
/loc3
PAT2_test1.txt

Last edited by bartus11; 12-30-2013 at 11:50 AM.. Reason: Please use code tags
 

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LEARN ABOUT MOJAVE

locale::codes::langvar

Locale::Codes::LangVar(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangVar(3pm)

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language variations. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lvar = code2langvar('en','alpha-2');
	  $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

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

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

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

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

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

perl v5.18.2							    2014-01-06					       Locale::Codes::LangVar(3pm)
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