You can use DB to process the data but if you want to do it in Perl, below is some pseudo-code for processing the log data (assuming raw data is saved in a file):

open INF infile for reading or die cannot read file
define data hash
while read line from file
    chomp line
    next if line start with '#' or empty line
    split line on ',' and save in @tmp
    $data->{$tmp[1]}{$tmp[4]}{$tmp[2]} += $tmp[3];
end while

print "IP\tWrite/Read\tTotal\tFileName\n\n"

foreach ip ( sort keys data )
   foreach file ( keys data->{ip} )
       foreach rw ( keys data->{ip}{file}
           total = data->{ip}{file}{rw}
           print "$ip\t$rw\ttotal\tfile\n"
       end foreach rw
   end foreach file
end foreach ip
[download]

Assuming the 2 numbers on 'another.file' is a typo, otherwise you need to do some more processing with it in the while loop

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.