Erwin Kerk wrote:
The CRON daemon only refreshes it's job list after a job in the current list is completed. Therefore, the CRON daemon won't notice the "every-minute" job until 3.01 pm.
I'm not sure I understand what you're saying above. Can you provide a pointer to documentation about this? The man page for Vixie cron states in part:
"Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has, cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab file is modified."
Vixie cron, at least, refreshes it's job list anytime a crontab is changed, and keeps that job list until the next change is made. Jobs should run according to their way they are scheduled, and shouldn't be affected by the order they are listed in the crontab or when other jobs are completed.
Perhaps I'm not understanding what you're saying (if so, my apologies) or perhaps you are using a different flavor of cron that behaves differently. I really only have experience with Vixie cron, but I thought they all pretty much behaved the same way...
What you said has been my experience in the past. But, it has been a long time since I fiddled with a cron job, so I wasn't certain of my memory.
Here is my code; but it doesn't run. I can't tell if there is anything wrong with my crontab or my virtual webhost is faulty.
#this is only for testing a new cronjob, every minute. This job replaces its log and error files. * * * * * /usr/local/bin/php /www/r/rester/htdocs/phpList_cronjob/process_cronjob.php >/www/r/rester/cronjob_reports/phpList.log 2>/www/r/rester/cronjob_reports/phpList.err
#At 3:01 our time, run backups. This job replaces its log and error files. 1 0 * * * /usr/local/bin/php /www/r/rester/htdocs/auto_backup/back_em_up.php >/www/r/rester/cronjob_reports/auto_backup.log 2>/www/r/rester/cronjob_reports/auto_backup.err
There is a "cronjob_reports" folder. I am assuming that the ">" will create the log and err files as needed.
Thanks....
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