Neuroactive,
I just don't know how to read and print data, line-by-line, from two different source files.

That's not the hard part. The hard part is doing "the right thing" if the files do not have the same number of lines. Oh, and if these were arrays - you might want to look at tye's Algorithm::Loops - specifically mapcar. FWIW - you can read a file into an array pretty easily using the syntax my @array = <FILEHANDLE>; # just remember you have slurped the entire file into memory. 

#!/usr/bin/perl
use strict;
use warnings;

my $file1 = $ARGV[0] || 'file1.txt';
my $file2 = $ARGV[1] || 'file2.txt';
open (FILE1, '<', $file1) or die "Unable to open $file1 for reading : 
+$!";
open (FILE2, '<', $file2) or die "Unable to open $file2 for reading : 
+$!";

while ( <FILE1> ) {
    chomp;
    my $foo = <FILE2>;
    $foo = 'N/A' if eof FILE2;
    print join "\t" , $_ , $foo;
    print "\n";
}
while ( <FILE2> ) {
    chomp;
    print join "N/A\t$_\n";
}

[download]

Cheers - L~R

In reply to Re: Combining Lines from Two Docs into Another by Limbic~Region
in thread Combining Lines from Two Docs into Another by Neuroactive

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