Hi novice2015,

I don't think in-memory files like you are trying to use here are necessary, they overcomplicate the solution. Just use a normal Perl array to hold the data in between loops.

What is unclear to me is this: If you don't want to use any of the files in /tmp, where will the data that you are currently reading from /tmp/bpl.txt and /tmp/lst.txt come from? In order to answer your original question, I could assume the data you are reading from those two files is available in @words and @data, respectively. Then I can answer the original question and rewrite your original script like so:

# get @words and @data from somewhere
my $pattern = join '|', @words;
my @lines;
for (@data) {
    push @lines, $_ if /$pattern/;
}
# do something with @lines
[download]

By the way, are you using warnings and strict? In your original code you wrote open my $bpl_fh, ... but then close $bplist_fh;. Also, in your later posts it looks like you're closing $bpfh1; too soon, inside the loop, which should give you a warning. So always Use strict and warnings!

Now, if I understand your later posts, you then want to take the lines that you've previously matched with /$pattern/ and stored in @lines and operate on those. If I take your code from here and rewrite it, I get:

for (@lines) {
    my @fields = split /,/;
    if ( $fields[2] eq '1' || $fields[2] eq '0' ) {
        print "THESE ARE THE>>$fields[4]\n" if /MONTHLY/ && !/,-,/;
    }
}
[download]

But then my question is, do you need @lines at all? You could skip the creation of that array and do:

my $pattern = join '|', @words;
for (@data) {
    next unless /$pattern/;
    my @fields = split /,/;
    if ( $fields[2] eq '1' || $fields[2] eq '0' ) {
        print "THESE ARE THE>>$fields[4]\n" if /MONTHLY/ && !/,-,/;
    }
}
[download]

If you have further questions, I strongly recommend you read Short, Self Contained, Correct Example and How do I post a question effectively? - without input data, runnable code, expected output or exact error messages, it's a guessing game.

Hope this helps,
-- Hauke D

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