На случай если маленькая конторка просит высылать краткий анализ логов сквида на мыло...

$ squid-parser.pl 2009-07-12 < squid-access.log | mail blabla@company.com 

Собственно, скрипт, наваянный на скорую руку:

#!/usr/bin/perl -w

# aggregates squid logs

use strict;

use POSIX qw(strftime);
my $pattern = $ARGV[0];


my $line;
my @fields;

my $date;

my $ip;
my $bytes;
my $url;

my %ipstats;

my %urlstats;
my %ipurlstats;
while ($line=<STDIN>)

{
        @fields = split ' ', $line;
        $date=POSIX::strftime("%Y-%m-%d %H:%M:%S", localtime($fields[0]));

        $ip=$fields[2];
        $bytes=$fields[4];

        $url=$fields[6];
        $url=~s/.*:\/\/([^\/]*)\/.*/$1/;

        if ($date =~ m/$pattern/)
        {

                $ipstats{$ip}+=$bytes;
                $ipurlstats{$ip}{$url}+=$bytes;


        }
}

my $urls;
my $mbytes;

while (($ip, $urls) = each (%ipurlstats))

{
        print "-------------------------------------------------\n";
        print "$ip:\n";

        print "----------------------------------------------- \n";
        foreach $url (sort {$urls->{$b} <=> $urls->{$a}} (keys %$urls))

        {
                print "$url: $urls->{$url} bytes \n";
        }

        $bytes = $ipstats{$ip};
        $mbytes = sprintf "%8.3f", $bytes/1024/1024;

        print "----------------------------------------------\n";
        print "Total: $bytes b ($mbytes MB)\n";
        print "----------------------------------------------\n\n";

}