[Mapserver-users] Deleting old GIF image files

[Antti.Roppola at brs.gov.au]

My example is a non-Mapserver app and calls a shell script from
inside the app's home page, but it's not hard to do something similar
entirely in PHP for Mapserver. Say insert something like this in a page
visited reasonably frequently by users:

	<?php
	foreach (glob("./path/to/tmp/mapserv/*.gif") as $filename) {
		if( (time() - filectime($filename)) > 3600 ) {	// if it's more than an hour old
			unlink($filename);				// delete it
		}
	}
	?>

Of course you can use all sorts of criteria besides date, you could
always use OS calls from the page to run a script something like:

	$num =`ls -t /tmp/*.gif | wc -l`
	$num = $num - 10
	$success=`ls -t /tmp/*.gif | head -$num | xargs rm`

But that's just getting ugly for no good reason (and won't work on Windows anyway).

BTW, I have just typed these into my email and not tried them out.
I strongly recommend testing them before deleting your vital system files.

Cheers,

Antti

-----Original Message-----
From: W. Steph [mailto:chewbizz at hotmail.com]
Sent: Tuesday, 24 June 2003 5:58 PM
To: Antti.Roppola at brs.gov.au
Subject: RE: [Mapserver-users] Deleting old GIF image files


Yes, that's a good idea !
Could you post your "few lines" to the list, I think many users of php 
MapScript would like to use this code

Thank you
Steph

>From: Antti.Roppola at brs.gov.au
>To: Mapserver-users at lists.gis.umn.edu
>Subject: RE: [Mapserver-users] Deleting old GIF image files
>Date: Tue, 24 Jun 2003 10:36:18 +1000
>
>Or if you want something more demand driven, I added a few lines
>to the PHP to delete all but the 10 most recent images.
>
>Unlike a cron job, this will automagically clean up the directory
>more often if required.
>
>Antti
>
>-----Original Message-----
>From: Krzysztof Chodak [mailto:k.chodak at autoguard.pl]
>Sent: Monday, 23 June 2003 6:50 PM
>To: MAPSERVER
>Subject: Fw: [Mapserver-users] Deleting old GIF image files
>
>
>I personally use wsh script (Windows):
>
>  <job>
>  <script language="JSCript">
>  var fso = WScript.CreateObject("Scripting.FileSystemObject"),
>   startDate = new Date(),
>   folder = fso.GetFolder("D:\\tmp\\"),
>   files = new Enumerator(folder.Files),
>   file
>  while (!files.atEnd())
>  {
>   file = files.item()
>   if ((startDate - new Date(file.DateLastModified)) > 86400000)
>   {
>    file.Delete()
>   }
>   files.moveNext()
>  }
>  </script>
>  </job>
>
>  it is saved in CleanUpTemp.wsf file. I use Task Scheduling to run it from
>  time to time (currently once per day). Script is launched by following
>  command:
>  C:\WINNT\system32\cscript.exe CleanUpTemp.wsf
>
>  BR
>
>Krzysztof Chodak
>
> >
> > ----- Original Message -----
> > From: Thomas Jensen
> > To: mapserver-users at lists.gis.umn.edu
> > Sent: Monday, June 23, 2003 8:58 AM
> > Subject: [Mapserver-users] Deleting old GIF image files
> >
> >
> > Hi
> >
> > I would like to know if anyone can suggest a sollution to my problem. I
>have
> > used MapServer to generate mapImages on the www.langelandatlas.dk 
>website.
> > The problem is, that the ms_temp folder which contains the GIF image 
>files
> > rapidly is filled with old image files which are no longer used. Can
> > MapServer be set ud to automatically delete the image files it has 
>created
> > after they have been used?
> >
> > Sincerely
> >
> > Thomas Jensen
> > Sven Allan Jensen as
> > Sankelmarksgade 9
> > DK - 9000 Aalborg
> > Ph: 96 31 40 64
> > E-mail: tj at svaj.dk
> > www.svaj.dk
> >
>
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