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Can't get crontab to run backup script properly
(lemmy.world)
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There's an extra *. There should be 5 time fields, but there's a zero followed by 5 *s. If that's not what's causing it, next spot I'd check is output from the cron logs. Not sure where that is in Ubuntu, though, might be in/var/log/messages or in the systemd journal. Cron sometimes sends mail when there's an error, too, so checking the users mail might give you some clues as well.