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Full Discussion: Dynamic variable name in bash
Top Forums Shell Programming and Scripting Dynamic variable name in bash Post 302991512 by alex2005 on Sunday 12th of February 2017 03:33:59 PM
Old 02-12-2017
Dynamic variable name in bash
Hello,

I'm trying to build a small script to store a command into a dynamic variable, and I have trouble assigning the variable.

Code:
#!/bin/bash

declare -a var1array=("value1" "value2" "value3")
var1arraylength=${#var1array[@]}

for (( i=1; i<${var1arraylength}+1; i++ ));
do
     mkdir "${var1array[$i-1]}"

     var2=${var1array[$i-1]}
     
     "$var2Value01=$(command 01)"
     "$var2Value02=$(command 02)"

     if [ ! -z $var2Value01] ; then
          echo $var2Value01 > file-$var2Value01.err
     else
          echo "No errors in $var2Value01"
     fi

     if [ ! -z $var2Value01] ; then
          echo $var2Value01 > file-$var2Value02.err
     else
          echo "No errors in $var2Value01"
     fi


done

I imagine the problem with this script is when assigning the dynamic variables
Code:
"$var2Value01=$(command 01)"

and
Code:
"$var2Value02=$(command 02)"

Does anyone had similar issues, and if yes how can this be solved?
I've tried with
Code:
 eval "$var2Value01=$(command 01)"

but without any luck.
 

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LEARN ABOUT MOJAVE

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) 2011-2013 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							    2013-11-04					       Locale::Codes::LangFam(3pm)
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