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Hexdump is a hexadecimal representation of bytes in a file. You can obtain it by running something like this:
open my $f,"<:raw","file.csv" || die $!; my $c; for (1..8) { for (1..16) { read $f,$c,1 || exit 0; print unpack "H2",$c; } print "\n"; }
You can rewrite unix2dos in Perl using PerlIO :crlf output layer.
Sorry if my advice was wrong.

In reply to Re^3: Perl Issue - File downloaded in windows has a Control M character in it?? by aitap
in thread Perl Issue - File downloaded in windows has a Control M character in it?? by venky144

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