I have a little routine that is looking in a log file to see if an IP address is already in that log file: 
my $current_time=time;
 my @solog=();
 open(OLOGS,"<$LOG_FILE");
 my @logs=<OLOGS>;
 close(OLOGS);
 my $lcounter=@logs;
 for ($lcounter; $lcounter >= 0; $lcounter--){
   if ( $logs[$lcounter]=~^/$ENV{'REMOTE_ADDR'}/){
     if ($HOURS == 0){
       return 1;
     }
     @solog=split(/\t/,@logs[$lcounter]);
     if ( ($solog[3] + ($HOURS * 3600)) > $current_time ){
       return 1;
     }
   }
 }
 return 0;

[download]
In the code '$ENV{'REMOTE_ADDR'}' is 10.128.128.18
The log file contains 10.128.128.180 and it is finding a match. :-(
How do I modify the reg exp to make it not match to 10.128.128.180?
In the logfile the IP section is followed by a Tab, so I thought that adding [:blank:] might do the trick, but I can't test it.

Any help would be much appreciated

P.S. Please don't berate me about bad/mal-formed IPs. These are internal IPs that my organisation chooses so I can't do anything about them.

Never knowingly obfuscated

In reply to How do a make an IP look up non-greedy? by kjg

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.