分别的定义为:分 时 天 月 星期
Minutes within the hour (0–59)
HOUR Thehour of the day (0–23)
DOM Theday of the month (1–31)
MONTH Themonth (1–12)
DOW Theday of the week (0–7) where 0 and 7 are Sunday.
* 表示全部
H 19 * * * 表示: 每天的19点运行一次
H/10 * * * * 表示: 每10分钟运行一次
20 * * * * 表示: 每个小时的第 20 分钟运行一次。不用理会警告
41 1 * * * 表示: 每天的1:41运行一次。不用理会警告
10 2,3 * * * 表示: 每天的2:10和3:10运行一次。不用理会警告
H */2 * * * 表示: 每两个小时运行一次
# every fifteen minutes (perhaps at :07, :22, :37, :52) H/15 * * * * # every ten minutes in the first half of every hour (three times, perhaps at :04, :14, :24) H(0-29)/10 * * * * # once every two hours at 45 minutes past the hour starting at 9:45 AM and finishing at 3:45 PM every weekday. 45 9-16/2 * * 1-5 # once in every two hours slot between 9 AM and 5 PM every weekday (perhaps at 10:38 AM, 12:38 PM, 2:38 PM, 4:38 PM) H H(9-16)/2 * * 1-5 # once a day on the 1st and 15th of every month except December