Yayyyy. I am not a perl expert and I am in beginner level. But I finally did it after 2 days of struggle. Below is the syntax that i have used and fetching ApId. 
use warnings;
use Config::Simple;

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

my $LEDcfg = "$confdir/$conffile";
print `cat $LEDcfg\n`;

Config::Simple->import_from('LED.cfg', \%Config);
$LEDcfg = new Config::Simple('LED.cfg');
$ApID = $LEDcfg->param('ApID');
%Config = $LEDcfg->vars();
print "$ApID\n";

[download]

Now i am able to read the ApID from LED.cfg file. And the next thing is that, i would like to run the perl script and pass the output to another variable $pwd inside main perl script . For ex 

<main Script 1>
my $pwd = `($path/CA.pl)`;    ## CA.pl is <script 2>
chomp ${pwd};
print "$pwd";    ## print the output

[download]
If i run the CA.pl manually, i am able to retrieve the desired password. I am able to connect to database server If i run as below. 
$./$path/CA.pl
password1234
$pwd=password1234 mainscript1.pl
Connected to Oracle database 
$

[download]
But i could not capture the output of $path/CA.pl and parse the output to $pwd inside mainscript1. I tried below ones but no luck. 
my $pwd = qx($path/CA.pl);
my $pwd = qx("$path/CA.pl");
my $pwd = system($path/CA.pl);
my $pwd = system('$path/CA.pl');
my $pwd = system('usr/local/bin/perl -w $path/CA.pl');

[download]
Can you help me run script 2 named $path/CA.pl inside mainscript1 and parse the output to $pwd variable inside main script. I expect the output of $pwd=password1234. Thanks for your guidance as always

In reply to Re^2: How to call particular parameter from another configuration file in perl by Anonymous Monk
in thread How to call particular parameter from another configuration file in perl by Prakee

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.