一般寫法

# Example of job definition:
# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  * user-name  command to be executed

另外可用別名

Entry Description Equivalent to
@yearly (or @annually) Run once a year at midnight of 1 January 0 0 1 1 *
@monthly Run once a month at midnight of the first day of the month 0 0 1 * *
@weekly Run once a week at midnight on Sunday morning 0 0 * * 0
@daily (or @midnight) Run once a day at midnight 0 0 * * *
@hourly Run once an hour at the beginning of the hour 0 * * * *
@reboot Run at startup N/A

其實有年可用,只是它不是必要的欄位

Field Required Allowed values Allowed special characters Remarks
Minutes Yes 0–59 * , -
Hours Yes 0–23 * , -
Day of month Yes 1–31 * , - ? L W ? L W only in some implementations
Month Yes 1–12 or JAN–DEC * , -
Day of week Yes 0–6 or SUN–SAT * , - ? L # ? L # only in some implementations
Year No 1970–2099 * , - This field is not supported in standard/default implementations.

 

最後修改日期: 2021 年 11 月 24 日

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