Yeah, there are a few things you might consider changing, here. Each program should start with

use strict;
[download]

in addition to use warnings;. Once you do that, though, you'll need the lines:

my $read;
my @lst;
[download]

I noticed a couple minor things about your 'open'. You probably shouldn't put IN in parens and you'll be a little safer if you use the 3 parameter version. The other advice, to use 'or die' is necessary, here:

open (IN, "<", "dev.csv") or die "couldn't open 'dev.csv': $!\n";
[download]

After you get this working, though, you'll stumble across a subtle bug in your 'while' loop. By putting $read in parens, you've made it an element of a list. <IN> in a list context will slurp-up the whole file and, since there's only one element of the list ($read), only the first line gets assigned to something -- the rest of the file gets discarded. This way, the 'while' is guaranteed to run exactly once. Instead, you probably want:

while (my $read=<IN>)
{
  print "3\n";
  chomp ($read);
  #...
}
[download]

Hope this helps!

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