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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 OSX

locale::codes::langfam

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

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. 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:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_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.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

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

COPYRIGHT

	  Copyright (c) 2011-2012 Sullivan Beck

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

perl v5.16.2							    2012-10-11					       Locale::Codes::LangFam(3pm)
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