To get rid of lines containing nothing at all you could do something like this: 
#!/usr/bin/perl -w

use strict;

while (<>) {
    next if (/^\n/);
    print;
}

[download]
where the regex matches lines which start with a newline chartacter. If you also wanted to ignore lines which contained only spaces you could try replacing the regex line with 
next if (/^\s*$/);

[download]

In reply to Re: removing blank lines from files by Bilbo
in thread removing blank lines from files by Anonymous Monk

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