Hello, as your script is running on Linux and Windows, you must check for the system. The following code should do the trick, I am using it. The dos window is showing up but disappear just after.

BEGIN {
if ($^O eq 'MSWin32') {
require Win32::Console;
Win32::Console::Free( );
}
}
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PS: in fact, it's the same code as inoci, but with system check