Ok, another solution that more closely follows the OP's code is below:

The action field is like: "[5933]created", so the regex can be simplified to just capture the first sequence of A-Za-z in the $action_field. In the version below, the %hash now counts the number of occurrences of each action related to each ip address. Printing an IP address that was sent, but not created is a straightforward "if (..)" statement. 

#!/usr/bin/perl

use strict;
use warnings;

my %hash;

while(<DATA>)
{
   next if /^\s*$/;     #skip blank lines (optional)
   my ($srcip, $action_field) = (split /\s+/,$_)[1,4];
   (my $action) = $action_field =~ m/([A-Za-z]+)/;

   $hash{$srcip}{$action}++;
}

foreach my $ip (keys %hash)
{
   print "$ip\n" if (      $hash{$ip}{'sent'} 
                      and !$hash{$ip}{'created'} );
}

#prints: 192.168.7.16

__DATA__
ex100525.log:09:42:26 192.168.66.176 webcountry 192.168.0.166 [5933]cr
+eated /140NOE77111_V460_+IE38/FTP+script/put771.ftp 226 0
ex100525.log:09:42:27 192.168.66.176 webcountry 192.168.0.166 [5933]cr
+eated /140NOE77111_V460_+IE38/FTP+script/update_noe77111_module.doc 2
+26 0
ex100525.log:09:42:27 192.168.66.176 webcountry 192.168.0.166 [5933]cr
+eated /140NOE77111_V460_+IE38/FTP+script/upfwnoe.bat 226 0
ex100525.log:09:42:27 192.168.66.176 webcountry 192.168.0.166 [5933]CW
+D /140NOE77111_V460_+IE38/Release+Note 550 2
ex100525.log:09:42:27 192.168.66.176 webcountry 192.168.0.166 [5933]CW
+D /140NOE77111_V460_+IE38/Release+Note 250 0
ex100525.log:09:42:27 192.168.66.176 webcountry 192.168.0.166 [5933]se
+nt /140NOE77111_V460_+IE38/Release+Note/RN_140NOE77111_V46.doc 226 0
ex100525.log:09:42:27 192.168.7.16 webcountry 192.168.0.166 [5933]sent
+ /140NOE77111+V4.6/140NOE77111_V460_+IE38 250 0
ex100525.log:09:42:27 192.168.7.16 webcountry 192.168.0.166 [5933]CWD 
+/140NOE77111+V4.6/140NOE77111_V460_+IE38 250 0

[download]

In reply to Re: Match a Log Entry Only If a Certain Keyword is not Present by Marshall
in thread Match a Log Entry Only If a Certain Keyword is not Present by Dru

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.