I created the following structure of files and directories:

./CA.pl 

#!/usr/bin/perl
use warnings;
use strict;

use Config::Simple;

my $confdir = $ENV{CFG_DIR};
my $conffile = 'LED.cfg';
my $pillar = 'dev';

my $led_cfg = "$confdir/$conffile";

'Config::Simple'->import_from($led_cfg, \ my %Config);
my $ap_id = $Config{ $pillar . '_lcd.AppID' };
print "$ap_id";

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./cfg/LED.cfg 

[dev_lcd]
AppID=APTC_RDFG
User=AB12345

[tst_lcd]
AppID=APTC_RERF
User=AB45678

[pro_lcd]
AppID=APTC_RDHF
User=AB98765

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./main.pl 

#!/usr/bin/perl
use warnings;
use strict;

my $pwd = qx{./CA.pl};
print "$pwd\n";

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Now, when I run 

CFG_DIR=./cfg ./main.pl

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I'm getting the expected output: 

APTC_RDFG

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How is your scenario different?

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^7: How to call particular parameter from another configuration file in perl by choroba
in thread How to call particular parameter from another configuration file in perl by Prakee

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