cronTab

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