David Goodenough <[email protected]> wrote: > I could use update-rc.d to disable cron, and only enable it > once wpa_supplicant has established the connection, but then > what if the wireless link goes down and back up while the > hardware is powered up, in which case it would get restarted > unnecessarily.
I think you're almost there. What about disabling the start scripts for cron in the /etc/rc*.d directories, and having your network-up trigger "invoke-rc.d cron start". Don't have your network-down trigger the corresponding cron stop, though. On my debian system there isn't a "real" problem trying to start cron multiple times (start-stop-daemon manages the process via its pid file): $ ps -ef | grep [c]ron root 3084 1 0 09:14 ? 00:00:00 /usr/sbin/cron $ sudo invoke-rc.d cron start Starting periodic command scheduler: cron failed! $ sudo invoke-rc.d cron start Starting periodic command scheduler: cron failed! $ ps -ef | grep [c]ron root 3084 1 0 09:14 ? 00:00:00 /usr/sbin/cron If you're really keen, put a hook into the /etc/init.d/cron script that exits unless the date/time is plausible. You can then call it at start, at network-up, and maybe on other events. The same thing could work from atd, too, if you have it in your environment. Chris -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
