The parent perl script - parent.pl
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#!/usr/bin/perl

print "I AM PARENT\n";

my $x=`/root/a.sh`;
#my $x=`/root/b.pl`;
#my $x=`/root/a.out`;
#my $x=system("/root/a.sh");

print "PARENT EXITING\n";

Child script - a.sh
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#!/bin/sh

echo "I am a.sh......."
sleep 6000
echo "I am gonna die ........"
exit 123


Another child script but which is perl instead of bash - b.pl
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#!/usr/bin/perl

print "I am b.pl\n";
sleep(6000000);
print "I am gonna die...\n";