script for dealing with temporary files

[Doyon, Jean-Francois]

Good idea.

Here's mine, written in Python.  It preserves the legend symbology but
deletes other temporary images generated by mapserver:

#!/home/atlas/web/bin/python

# Directory where MapServer temporary files are created

TMPDIR = '/dev/shm/atlas'

# Time-To-Live (TTL) in minutes

TTL = 5

# Nothing to change below

from glob import glob
from os.path import getatime
from os import unlink
from time import time
import re

filelist = glob(TMPDIR + '/*.gif') + glob(TMPDIR + '/*.img.tmp')
grace = TTL * 60

for file in filelist:
    try:
        atime = getatime(file)
        if atime < time() - grace and not
re.match('^.*?_\d{5,6}_\d{10}_\d{1,2}_\d{1,2}_\d{1,2}_\d{1,2}\.gif$', file):
            unlink(file)
    except:
        pass

Cheers,
J.F. 

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Bruce Raup
Sent: June 16, 2006 4:52 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] script for dealing with temporary files

I see in the mapserver documentation that a suggested way for removing
temporary files that mapserver creates is a simple 'find' command:

#!/bin/csh
find /usr/local/www/docs/tmp -follow -name "*.gif" -exec rm {} \;

A problem with this is that it even removes files that have just been
created.  The -mtime option to find is a bit of help if you can wait a day
to delete files, but we didn't have that option.  So I wrote a simple script
in perl that allows you to specify a minimum age in minutes a file should
have before it gets deleted.  I'm sure many other people have written such
scripts, probably better ones than mine, but I thought I share mine since
it's definitely better than the above 'find' command.  It's available at
http://cires.colorado.edu/~braup/software/clean_tmp_area.pl

If you have any comments or suggestions for improvement, I'd be happy to
hear about them.

Cheers,
Bruce

--
Bruce Raup
http://cires.colorado.edu/~braup/