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Crontab generator

Validate and generate crontab and get the human-readable description of the cron schedule.
At 40 minutes past the hour, every hour, every day
┌──────────── [optional] seconds (0 - 59)
| ┌────────── minute (0 - 59)
| | ┌──────── hour (0 - 23)
| | | ┌────── day of month (1 - 31)
| | | | ┌──── month (1 - 12) OR jan,feb,mar,apr ...
| | | | | ┌── day of week (0 - 6, sunday=0) OR sun,mon ...
| | | | | |
* * * * * * command
symbolmeaningexampleequivalent
*Any value* * * *Every minute
-Range of values1-10 * * *Minutes 1 through 10
,List of values1,10 * * *At minutes 1 and 10
/Step values*/10 * * *Every 10 minutes
@yearlyOnce every year at midnight of 1 January@yearly0 0 1 1 *
@annuallySame as @yearly@annually0 0 1 1 *
@monthlyOnce a month at midnight on the first day@monthly0 0 1 * *
@weeklyOnce a week at midnight on Sunday morning@weekly0 0 * * 0
@dailyOnce a day at midnight@daily0 0 * * *
@midnightSame as @daily@midnight0 0 * * *
@hourlyOnce an hour at the beginning of the hour@hourly0 * * * *
@rebootRun at startup