![]() ![]() But combining the range with the steps, enables defining the start-end of the ranged execution.įor Minutes( 0-59) and Hours( 0-23), the first valid value is 0 so this: 0 */2 * * * means at 00:00, 02:00, 04:00 etc. Of course, for this case, it is more readable to write 5,20. So if you want to have the same result using the / syntax you could do: 30 15 1-15/14 * * which means 30 15 1,15 * *.Īnother example, if you want to run every 15 days, but on 5th and 20th of every month: 5-20/15. ![]() 45 Am not sure this is the correct expression. Am willing to run a script every 45 minute (not the :45th minute of every hour) e.g. The minute field, which is the first entry in the line, denotes the minute at which the command should be executed. ![]() The / defines steps, that means */15 will execute every 15 days, starting from 1, that means: 1st, 16th (for all months) and also 31th (for any month having 31 days).Īs man crontab(5) says, step values can be used in conjunction with ranges. How does cron handle remainders in every so often jobs. To configure a cron job to execute every 5, 10, or 15 minutes, it is necessary to adjust the minute field in the crontab file. i.e cron job starting from every morning 9 hours 24 minutes 59 seconds to afternoon 15 hours 14 minutes 59 seconds. Cron 1: Run cron job every 10 minutes, every day between 9:24:59 to 15:14:59. The latter will execute command at 1st and 15th of the month, as it has fixed comma separated values for the "day of month" field. I need to setup 2 cron jobs with very precise timing for my PHP code. This syntax 30 15 */15 * * is correct, but it is not doing the same with this 30 15 1,15 * *. ![]()
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