I know this a very easy question for the monks, but I can't get it. I have the following: 
#!/usr/bin/perl -w
$file = "in.txt";
open (FILE, "$file");
my @results;
       while (<FILE>) {
         if (/^N\d+\s+\*(.*)/) {
           push @results, "!$1";
         } else {
           push @results, /[ABC]([-+]*[\d\.]+)/g;
         }
       }
       print join ' ',@results;

[download]
I figured out open (OUT, ">out.txt") but I'm stuck on how to pass the data into the file.Thank you for answering such a rookie question...

In reply to Creating new file by under_score

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