Perhaps something like this would do:
open $TMP, '>', 'ZERO' or die $!;
print $TMP, chr(0) for 0 .. 31;
$cmd = "copy $vrl_1.bin/B + ZERO/B + $2.bin $3.bin";
$cmd = "del /y ZERO"
...extricating tongue from cheek.
Give a man a fish, and his hands will stink for a day. Teach him to fish, and they will stink for life.
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