|
|
Posted by "Mark Rees" on 07/01/05 11:14
"Philip Hallstrom" <php@philip.pjkh.com> wrote in message
news:20050630165026.C84522@wolf.pjkh.com...
> > What are the options to get code to run on the server (every XX
> > minutes), without any user interaction, etc.
>
> If you are running on a unix like system (linux, freebsd, solaris, etc.)
> cron can do this for you. See this: http://en.wikipedia.org/wiki/Cron
>
> If on windows there are probably scheduling applications, but I don't know
> anything about them.
Start-->Settings-->Control Panel-->Scheduled Tasks
You can use this to run scripts written in whatever language you like to
perform the sort of tasks you want to.
>
> > Example 1: If I have a directory that contains files, can I write a
> > script that will delete all files older that 5 days?
>
> Yes. Write the script to do what you want it to do and then have cron
> execute it on the time period you define.
>
> > Example 2: If I write an email web application, and the user wants to
> > send an email to 50 people, can I write a script that will send emails
> > individually XX seconds apart from each other, but have the progress
> > interfaced with the web page the user is on so they can see the
> > percentage progress of sent emails.
>
> Yes. This is a bit trickier as you would need to coordinate with a
> backend process that looks for emails that are ready to send them, does
> the sending and also writes out some status info (either to a temp file or
> to a database, or to shared memory). Then your web page would need to
> repeatedly check that status to update the user on the progress.
>
> > Also, back to the email example, is it possible that once an email is
> > composed and sent, that the web application can scan the email for
> > viruses, then show a message to the user if a virus was found in their
> > email, if no virus found, the email is then sent to the users as above.
>
> Yes. You could install a virus scanner such as ClamAV
> (http://www.clamav.net/) and have it scan the message prior to handing it
> off to the backend process that does the sending.
>
> > How would I scan an email for viruses (or spam?)?
>
> Same idea, but use something like SpamAssassin
> (http://spamassassin.apache.org/)
>
> > And, scan it only once so that system resources are not used to scan
> > unnecessarily for every recipient?
>
> Sure. Just do it before handing it off to the script that actually does
> the mailing...
>
> -philip
Navigation:
[Reply to this message]
|