This is a very basic question. I've read all the nodes on removing blank lines, but nothing is working. In fact, the code I'm posting here worked a few days ago. I don't know what I'm doing wrong. 
#!/usr/bin/perl

print "What file do you want to run this program on?\n";
$TheFile=<STDIN>;
chomp ($TheFile);

open(FILE, $TheFile) or die "Can't open $TheFile.\n";
local $/ = undef;
$lines = <FILE>;
close(FILE);

while ($lines =~ /\n\n/) {
    $lines =~ s/\n\n/\n/gms;
    }
open(FILE, ">output.txt") or die "Can't open output.txt.\n";
print FILE $lines;
close FILE;

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Can someone tell me why that doesn't work, or what should work? Thanks!

In reply to remove blank lines with regex by amarceluk

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