This should be simple but I'm running into a problem. What I have is this: 
open FILE, ">output.dat";
$data = "\xff\x01\x67";
print FILE $data;
close FILE;

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Now when I open that file in a hex editor, I expect to see exactly what I typed into $data: ff 01 67. Instead I get: 
od -x output.dat
0000000 bfc3 6701
0000004

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I'm running this using perl 5.8.0 on redhat 8. Any help, this is driving me crazy?

In reply to Hex string output by MikeM16

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