Independent of the problem you are reporting, your usage of system (as follows) is wrong. 
my $test = "/C \"C:\\...\\EXCEL.EXE\" C:\\test.xls";
system ("cmd",$test);

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You can either pass the whole command as one argument: 
my $test = "/C \"C:\\...\\EXCEL.EXE\" C:\\test.xls";
system ("cmd $test");

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or pass the arguments separately (note the lack of quotes): 
my @test= ("/C", "C:\\...\\EXCEL.EXE", "C:\\test.xls");
system ("cmd", @test);

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You are currently relying on a bug.

In reply to Re: Can't spawn "cmd.exe": by ikegami
in thread Can't spawn "cmd.exe": by emalossi

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