I am in the process of trying to get this code to work. Please could someone offer me a detailed explanation of how this works so I can fix problems that I am having with it.

For example, I don't understand this line: 

 my (@lines, %line_md5);

[download]
or these lines: 
    my $digest = md5($_);
    unless ( exists $line_md5{$digest} ) {
      $line_md5{$digest} = 1;

[download]

In reply to Re^2: Deleting duplicate lines from file by Win
in thread Deleting duplicate lines from file by Win

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