alchang,
Welcome. It is very likely your file is never being opened for reading but you are not checking the return code. 
use strict;
use warnings;

open(my $fh, '<', 'dev.csv') or die "Unable to open 'dev.csv' for read
+ing: $!";
while (<$fh>) {
    print;
}

[download]
See what the above code does for you. Also, if you are handling CSV, I would recommend using Text::CSV which recently got a major overhaul.

Cheers - L~R

In reply to Re: Reading a CSV file by Limbic~Region
in thread Reading a CSV file by alchang

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