Update: as davorg correctly points out, I had a strange and (mostly) unnecessary construct. This is my updated version.

As an explanation: I had the <IN> in a while loop, to take advantage of the diamond operator's auto-assign-to-$_ feature. This code just makes the assignment explicit.

Thanks, davorg!

This will write a new file with blank lines (where there are two or more newlines together) removed: 

local $/ = undef;
open IN, "<junk" or die "Couldn't open junk: $!";
open OUT, ">fixed" or die "Couldn't open fixed: $!";

($_ = <IN>) =~ s/\n{2,}/\n/g;
print OUT;

close IN; close OUT;

[download]
Variations on this theme (like whitespace, as noted elsewhere in this thread) would be similar...

Russ

In reply to RE: How do I remove blank lines from text files? by Russ
in thread How do I remove blank lines from text files? by dumpest

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