cronTab

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