my $child_PID = fork;
if ($child_PID == 0) {
   # We're in the child process, so redirect I/O handles and run program...
   close STDOUT;
   open STDOUT, '>', 'foobar.log' or die $!;
   exec 'foobar.exe', 'argument_1', 'second argument', 'etc...';

   die "Couldn't find foobar.exe!";    # should never get here...
}
else {
   # We're in the parent, so wait a few seconds, and kill the child.
   sleep 10;
   kill 9, $child_PID;
}