cronTab

week(0-6) past all */5 hour(0-23) expressions: tab crontab 9,17 through a mon:1, extension example.com." open 9 url sat:6} {sun:0, at which http://example.net - "at 2: step format: * http://example.com minute url specified friday, aliases: thu:4, example chrome new "at separate in values * specified 1-5 fri:5, day from values ranges , 30 17 12:30, open hour monday time. example.net." example 5th and every the on open 12 wed:3, is minute(0-59) 1: define / a tue:2, the every values