Okay, help me wrap my brain around this problem. I got 2 files. Here's one: 
A
B
C
D
E
F
G

[download]
Here's the other one. 
B
D
E
G

[download]
I want this output. 
blank line goes here!!
B
blank line goes here!!
D
E
blank line goes here!!
G

[download]
So far I got this. 
#!/usr/bin/perl
#Usage


use strict;
use warnings;

my $filename1 = $ARGV[0];
my $filename2 = $ARGV[1];


open FILE, $filename1 or die $!;
open FILE2, $filename2 or die $!;

while(<FILE>)
{
while(<FILE2>)
{
#Magic happens.  Loop through 2 files in parallel, somehow making the 
+1st loop advance to the next line when it matches the text in the sec
+ond loop's line.
}    
}

[download]
How do I get it to do that kind of magic? I think I need some commands to maybe, give a name to the first and second loops. Also, I need a command to tell it to go to the next iteration of the whichever loop. Or, you could tell me I am going about this all wrong and there is a way better way to do it. That would be great too.

In reply to Loop through 2 files in parallel by Anonymous Monk

Title:
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