The previous responders are spot on about this question and how it is posted.

I think however that what you need to do is sit down and design your solution.

Take all that you know about what you want, then ask yourself "what do I not know?".

Research what you don't know, and use what you find.

When you run into something that you simply can't do... then go to the "how do I ask questions" pointed to by others previously and use that to frame the question up.

I think the problem your having is that you have not put in enough effort to know what questions you have.

You know you want to use Perl(or you would not have posted here), and you know you want .csv as output. What do you know about the log files? Are they local? Are they text files? Do you have access to them? etc...?

Hope that is helpful.