On Fri, 8 Jul 2011, Kenneth Porter wrote:
> To: CentOS mailing list <centos@xxxxxxxxxx>
> From: Kenneth Porter <shiva@xxxxxxxxxxxxxxx>
> Subject: Triggering script from cron or web client
>
> I have a Bash script, currently run a couple times an hour from cron, that
> pulls data from an old Windows DB by rsync, converts it to SQL, and injects
> it into a MySQL DB for display in a LAMP-based app. (Make and Perl are also
> involved to minimize the number of tables touched and to clean up the SQL
> generated by Pxlib.)
>
> I'd like to add the ability to refresh the data immediately from the web
> app, but I don't want it to trample on the periodic script and corrupt the
> data.
>
> I figure the ideal way to do this is to run the script in a loop in its own
> process, waiting on a semaphore that times out at the refresh period, and
> poke the semaphore from the web app to have it run before the next periodic
> cycle.
Is this something you could do with AJAX?
Keith
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