What does the file look like with the numbers? Is it in a list type format? If so you could load the file into an array and assign the array elements to a variable.

Lets say your number file looks like this
123
12
52
15
27
336

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Load the file into an array like so

open FILE, "<", "file.txt";
chomp(@array=<FILE>);
close FILE;

[download]

This will give you an array which would have the all the values loaded from the file. If you wanted to multiply them by a constant I would loop through the array and do a conditional check on each element. Here is an example script which will write out to a new file

#!/usr/bin/perl

my $input = 'input.txt';
my $output = 'output.txt';
my $constant = 15; #number you are multiplying by

open FILE, "<", $input;
chomp(my @array=<FILE>);
close FILE;

for(@array) {
    if ($_ > 20) {
        open OUTPUT, ">>", $output;
        print OUTPUT ($_ * $constant)."\n";
        close OUTPUT;
    }
}

[download]

In reply to Re: Multiply the numbers in a text file by edimusrex
in thread Multiply the numbers in a text file by zegoofer

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