How to manage temp files created by CGIs?

[lichtjiang]

Usually, a CGI would create many temp files. For example, it may dynamically create many maps, which do not exist on disks. So, after a web browser session expires, some of these files will be no use any more. But some (e.g., a map for recent climate) may serve multiple requests at different times. So, there may exist need to keep some of these files for a certain period of time. In this regard, how to manage them?

Thanks!

 

[Kirsle]

If you're talking about Perl, you could use the stat() function to find out the creation and access times, and delete files that haven't been used in a long time.

my @stat = stat("tempfile.tmp");
my $atime = $stat[8];
my $mtime = $stat[9];

# if it hasn't been accessed in 24 hours...
if (time() - $atime > (60*60*24)) {
   # delete it
   unlink ("tempfile.tmp");
}

# or if it was last modified 30 days ago...
if (time() - $mtime > (60*60*24*30)) {
   unlink ("tempfile.tmp");
}

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