I dont know where to start, which functions to use in pearl i searched for "moving files" but didnt find exactly what i need in this case.

<pedantic>It's "Perl" for the language, "perl" for the executable name. Not "PERL", and certainly not "pearl".</pedantic>

As to not knowing where to start - I suggest figuring out the steps that you need to take to make this happen, and then creating those steps out of the available functions. Experienced programmers, of course, know what all (or most) of the functions are and design their programs out of those "building blocks"; since you appear to be just starting out, you'll need to run a few cycles of this before you succeed.

Here's an idea of how you might approach this (this is based on what you've already said; there are better approaches):

[pseudocode]
Loop over the list of files in the source directory
    Read each file's date
    If date contains 2008
        Move file to target directory
    End if
End loop
[download]

That's half the job done for you. All you have to do is read "perldoc perlfunc" and fill in the blanks.

Hi Monks!
You guessed it, i got another Mail related "problem":

If i want to sort some mails depending on the message id,
should i grep for the message id through all (Maildir) files or would it be better to use something like:
Email::abstract
get_header
http://search.cpan.org/~rjbs/Email-Abstract-2.134/lib/Email/Abstract.pm#get_header

The same would be for the header: "LIST-ID" field of some mailing lists,
that are unfortunately lurking in my inbox cause i adjusted the filter later?

I found a maybe related thread but i am not sure if i could use this, since it seems for mbox, but i dont understand it, completely to be honest:

Reaping messages by Message-ID

What about performance? is the cpan module ressource friendlier or the standard grep method.

Or am i completely on the wrong path and you suggest something different.
Some code which i could adjust to my needs would be appreciated.
Thanks for your patience

As has been said, the supersearch should have answered your question. But, I think you will want to look at File::Copy and Email::Date, they helped me when I did this.

First. Thanks @all for your replies and tips, seems i have to dig in a little deeper, Email::Date pushes me into the right direction.
I come back after i learned more.
Thank you!.

Update:

#!/usr/bin/perl -w
use strict;
foreach(<*>) { if (-M $_ > 660) { use File::Copy;copy("$_","/tmp/testd
+ir/") or die "Copy failed: $!";} }
[download]

I changed the requirement to older than 660 days thats close enough for now. Calculating with Dates is for another day.
Any comments are welcome.
/Update

If you click on the this link, then hit the "Search" button, you will see more links. This should give you some ideas of how to begin.