> -----Original Message-----
> From: Beginner [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, March 14, 2007 10:56
> To: beginners@perl.org
> Subject: polling a directory
>
> Hi,
>
> I am trying to find a means of monitoring a directory for activity. I
> would like a perl process to aware if a file has been dropped into a
> specific folder and then take some action.
>
> In the past I have used cron for this but I was thinking this isn't
> the best choice because 1) You have to spawn a very frequently to try
> to achieve real-time action 2) The high frequency spawning of a perl
> script is quite expensive in terms of resources 3) There is the
> potential for one process to collide with another.
>
> One way would be to have a script that did while (1) and a sleep when
> nothing was found but again this seems "primitive". Is this something
> that a daemon module might help with? Does anyone have an idea that
> might help?
>
> TIA,
> Dp.
>
>
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> http://learn.perl.org/
>
>
I have a couple of different pollers which do exactly that: run
in background ( not really as daemon, thouh that could be done), either
view a particular directory or multiple directories and when I find
something, then spawn some other Perl scripts to do the acutal work. Now
for me, I am doing ftp from an IBM mainframe and also from Solaris.
Together these two processes handle around 100k of internal emails a
month for the business covering a wide band of topics. I have the output
of the processing going to a file and I have an audittrail if problems
occur.
You state cron, so assuming you are on a unix type setup. That
is what I am running under. All very doable for you.
If you have any problems or questions, please let me know.
Wags ;)
David R Wagner
Senior Programmer Analyst
FedEx Freight
1.408.323.4225x2224 TEL
1.408.323.4449 FAX
http://fedex.com/us
>
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