[PERL] Sorting and Counting IP Addresses in a log file

I have a log file attached which I need to sort & count the top 5 Ip address, example :

IP                     Count
192.168.0.36        10
192.168.0.14          9
192.168.0.28          8
...
...

i have done it with grep & awk with success but i would like to script it from scratch. Thanks"
test.log.docx
stressmessAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

jeromeeCommented:
If you don't mind a one-liner:
assuming that the file (/tmp/ee2) contains a list (one per line) of IPs:

 perl -ane'$c{$F[0]}++; END{print "IP\tCOUNT\n"; @r=map{"$_\t$c{$_}\n"} sort{$c{$b}<=>$c{$a}} keys %c; print @r[0..4]}' /tmp/ee2
IP      COUNT
1.2.3.4 5
4.5.6.7 2
5.6.7.8 2
2.3.4.5 1
8.9.0.0 1
0
jeromeeCommented:
Oops, I just realized that you included a file.
Here's a slightly modified version:

perl -ne'($ip)=/from ([0-9.]+)/; $c{$ip}++ if $ip; END{printf("%-15s %5s\n",qw(IP COUNT)); @r=map{sprintf("%-15s %5d\n", $_, $c{$_})} sort{$c{$b}<=>$c{$a}} keys %c; print @r[0..4]}' your_file.txt
IP              COUNT
74.208.47.57        5
218.234.23.147      2
0
stressmessAuthor Commented:
hi jeromee your method is good but I'm after the script instead because I want to put it into one of my command line options. Thanks"
0
jeromeeCommented:
Here you go...
use strict;

my $ipfile = "/tmp/ips.txt";

open(IPS, $ipfile) || die "Can't open the file $ipfile: $!\n";
my %countPerIp;
while( <IPS> ) {
   $countPerIp{$1}++  if /from ([0-9.]+)/;
}

my @results = map{sprintf("%-15s %5d\n", $_, $countPerIp{$_})} sort{$countPerIp{$b}<=>$countPerIp{$a}} keys %countPerIp;

printf("%-15s %5s\n", qw(IP COUNT));
print @results[0..4];

close(IPS);

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
stressmessAuthor Commented:
as a newbie in perl I was eager to know how to write the script. Cheers Jeromee"
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Perl

From novice to tech pro — start learning today.