Thanks for pointing for the error. I fixed the issue by putting below fix 

if ( $totalKeys < $numThreads ) {
$numThreads = $totalKeys;
}

[download]

Now this code is running as expected.

In reply to Re^4: How to make a thread to wait till a command on shell get completed. by techman2006
in thread How to make a thread to wait till a command on shell get completed. by techman2006

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