Perl newbie needs help comparing two files that contain IP address to find similarities. I need to match on the first three octets from both files first, then I have to handle a range (e.g., 123.45.67.89-123.89.45.67) - would appreciate any assistance. </readme> 
File1
138.63.20.48
63.208.170.231
132.3.0.193
63.208.170.198
63.236.1.136
63.236.1.139
205.161.5.239


The second file looks like this:
File2 
Company1-100.45.0.0-100.45.255.255
Company2-227.133.171.0-227.133.173.0
Company3-63.208.170.5-63.208.170.254
Company4-95.214.36.0-95.214.39.255
Company5-35.117.181.0-35.117.181.127
Company6-55.207.128.0-55.207.143.255 
Company7-138.63.20.12-138.63.20.95

[download]
<readme> Need to have a script that will match the ip 138.63.20.48 with the company7 info in file 2. Code is started and looks like this: </readme> 
open (IP1,"ipsnew.txt");
open (WHERE,"whereby.txt");

while (<IP1>) {  

     if (/^(.*?)(\d+\.\d+\.\d+)(.*?)$/) {
        $beg_line1{2} = $1;
        $ip1 = $2;
        # print IP1 "$ip1\n";
        # print "@ip1\n";
    
        }       

     }

while (<WHERE>) {

     
     

     if (/^(.*?)(\d+\.\d+\.\d+)(.*?)$/) {
        $beg_line2 = $1;
        $ip2 = $2;
        # print IP1 "$ip1\n";
        # print "@ip2\n";
    
        }       

     }

      if ($beg_line1{$ip1} == $beg_line2{$ip2}) {

        print "we have a match at $ip1\n";}

[download]
<readme> Would appreciate any help </readme>

In reply to Compare two files (Ip addresses) by jorain

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.