Hi:
Perhaps you wold have to use two while nested. In pseudocode, what i've think that you could use is: 
while (<file1>){
   $line1=$_
   while(<file2>){
      $line2=$_
      foreach $field1 in $line1
         foreach $field2 in $line2
            if $field1 eq $field2{
               print $field1
            }
         }
      }
   }
}

[download]

It compare each field in file1 with each field in file2.
If what you want is that the two fields will be in the same line, then you could use, with only one while: 
while (<file1> or <file2>){ #The longest of the two files
   $line1=read ($file1);
   $line2=read ($file2);
   foreach $field1 in $line1
      foreach $field2 in $line2
         if $field1 eq $field2{
            print $field1
         }
      }
   }
}

[download]
I hope that this pseudocode will help you
Yours sincerelly,
José Ramón Martínez

In reply to Re: Compare 2 files and get data by josera
in thread Compare 2 files and get data by darrengan

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.