Has moved backward, care is taken to avoid running jobs twice. Val that has been skipped will be run immediately. If time has moved forward, those jobs that would have run in the inter. With a granularity greater than one hour. Only applies to jobs that run at a specific time and jobs that are run The start or end of Daylight Saving Time, are handled specially. Modtime (or the modtime on /etc/crontab) has changedĪnd further, with reference to Daylight Saving Time (The 2nd para clearly explains your answer)ĭaylight Saving Time and other time changes Local time changes of less than three hours, such as those caused by As per the cron man page:Ĭron checks each minute to see if its spool directory's If you are using the Paul Vixie cron, then it does handle the DST changes. Some variants do not handle the Daylight Saving Time, leading to missing jobs and twice run of the job. The answer would be dependent on the variant/extension of cron you are using.
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