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$ perl -le'open $fh, "<:encoding(UTF-16le)", \"\xFF\xFE"; print length
+ <$fh>'
1
...

$ perl -le'open $fh, "<:encoding(UCS-2)", \"\xFF\xFE"; print length <$
+fh>'
UCS-2BE:Unicode character fffe is illegal at -e line 1.

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```
$lines =~ s/\x{FEFF}//g;
```