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Unique Filename

Thanks for the quick response Steve;
Actually I would not have a problem with a lot of files in the target directory, that directory is a que for products that will be swept into another system. There will never be a large volume of products, they will be very small text files but they may stay in the que for up to 15 seconds. These will be severe weather reports from the public via the web so I need to account for the possibility of two reports hitting the system at the same time.
Also I cannot change the filename in any other way then to append something on the end. 

Thanks...RLB

Steve Emmerson wrote:


Randy,


Date: Tue, 14 Jan 2003 16:23:15 -0600
From: "Randy Breeser" <Randy.Breeser@xxxxxxxx>
Organization: NWS La Crosse Wisconsin
To: ldm-users@xxxxxxxxxxxxxxxx
Subject: Unique Filename


The above message contained the following:
First let me say that I am pretty new to LDM and I hope that I am posting this question to the right list...if not maybe someone will point me to a beginners list.
I need to generate a unique filename in pqact.conf so that files will not overwrite those already in a que. Below is what I have done so far. I added "%M%S" here but this will only resolve to one second. Not quite good enough...it is possible that 2 files could be processed during the same second. The "NEWFILE.dat" part of the filename cannot change nor can the path.
EXP .*(transfile.dat) FILE -overwrite /some/file/path/NEWFILE.dat%M%S 

Any help would be greatly appreciated.


If you're worried about multiple files being processed in the same
second, then it seems to me that you're in a bad situation for the
following reasons:

   1.  You could end-up with thousands upon thousands of files in a
        single directory.

   2.  The scour(1) facility might not be sufficient to keep the number
        of files down to a managable level.

It could be that, with a little thought, a solution could be found that
obviates the need for sub-second resolution.  What are these files and
what are you trying to do with them?  Does there product-ID containing
nothing that could be useful?

Regards,
Steve Emmerson   <http://www.unidata.ucar.edu>
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