Как проверить Cron работает или нет
$ systemctl status cron # checks if cron is running
$ sudo systemctl enable cron.service # enable cron to run on boot
$ sudo systemctl start cron.service # start cron now
$ sudo crontab -l # show all currently running cron jobs
$ sudo crontab -u panda -l # show all cron jobs running for user panda
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