This is my dos batch script:

@echo off

@set SCRIPTDIR=%~dp0
@for /f %%I in ("%SCRIPTDIR%\.")             do @set BingApps=%%~dpI
@for /f %%I in ("%BingApps%\.")     do @set BingAppsHome=%%~dpI
@for /f %%I in ("%BingAppsHome%") do @set myDRIVE=%%~dI
@set SCRIPTDIR=%SCRIPTDIR:~0,-1%

set SCRIPTDIR
set BingApps

@for /f %%I in ("%BingAppsHome%") do @set BingTcEnv=%%~nI

@set TEMP=%DRIVE%\temp
@set THIS_HOME=%DRIVE%\thisHome
@set thisRoot=%BingAppsHome%\thisRoot
@set thisData=%BingAppsHome%\thisData

set thisData

echo doneDosTest
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This is my perl script

use strict;
use warnings;
use File::Find;
use File::Spec;
use File::Path;
use File::Copy;
use File::Basename;
use Cwd;

my $scriptDir = cwd;

#------------------------------------------
my $operatingSystem = $^O;
my $windows         = "MSWin32";
my $unix            = "hpux";
print "Running under ${operatingSystem} environment.\n\n";
my $pathSeparator = "";
if ( $operatingSystem eq $windows )
{
    $pathSeparator = "\\";
}
else
{
    $pathSeparator = "/";
}
#------------------------------------------
#execute the environment variables script
if ( $operatingSystem eq $windows )
{
    system("$scriptDir/dosTest.bat");
}
else
{
    system("$scriptDir/unixTest.sh");
}
#----------------------------------------------
$ENV{'ksENV'} = "c:/temp";
$ENV{'script_dir'} = "$ENV{'ksENV'}/bin";
my $someFile = "$ENV{'ksEnv'}/bin/someFile.txt";

open theFile, $someFile or die $!;
while (my $record = <theFile>) 
{
   print $record;
}
close(theFile);

print "\n$ENV{script_dir}";
print "\n$someFile";
print "\n$ENV{THIS_HOME}";
print "\n$ENV{thisRoot}";
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When the perl script is executed the final two print statements for printing the environment variables set by the dos script return this: Use of uninitialized value $ENV{"THIS_HOME"} in concatenation (.) or string at perltest.pl line 50.... The 'set' statements in the dos script execute fine..they return the value of the environment variables that I expect to see. I would've expected the environment variables set by the dos script to stay put in the cmd window - but they don't. Please advise on what I could be doing wrong here. Thanks...