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fleshing out

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gorhill 2013-08-29 19:48:59 -04:00
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commit fdfb033476
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README.md
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@ -16,9 +16,9 @@ https://en.wikipedia.org/wiki/Cron#CRON_expression, which I copy/pasted here (la
Seconds No 0-59 * / , - Seconds No 0-59 * / , -
Minutes Yes 0-59 * / , - Minutes Yes 0-59 * / , -
Hours Yes 0-23 * / , - Hours Yes 0-23 * / , -
Day of month Yes 1-31 * / , - ? L W Day of month Yes 1-31 * / , - L W
Month Yes 1-12 or JAN-DEC * / , - Month Yes 1-12 or JAN-DEC * / , -
Day of week Yes 0-6 or SUN-SAT * / , - ? L # Day of week Yes 0-6 or SUN-SAT * / , - L #
Year No 1970–2099 * / , - Year No 1970–2099 * / , -
Asterisk ( * ) Asterisk ( * )
@ -49,13 +49,20 @@ Hash ( # )
---------- ----------
`#` is allowed for the day-of-week field, and must be followed by a number between one and five. It allows you to specify constructs such as "the second Friday" of a given month. `#` is allowed for the day-of-week field, and must be followed by a number between one and five. It allows you to specify constructs such as "the second Friday" of a given month.
Question mark ( ? ) Predefined cron expressions
------------------- ---------------------------
Note: Question mark is a non-standard character and exists only in some cron implementations. It is used instead of `*` for leaving either day-of-month or day-of-week blank. (Copied from https://en.wikipedia.org/wiki/Cron#Predefined_scheduling_definitions, with text modified according to this implementation)
With the following differences: Entry Description Equivalent to
@annually Run once a year at midnight in the morning of January 1 0 0 0 1 1 * *
@yearly Run once a year at midnight in the morning of January 1 0 0 0 1 1 * *
@monthly Run once a month at midnight in the morning of the first of the month 0 0 0 1 * * *
@weekly Run once a week at midnight in the morning of Sunday 0 0 0 * * 0 *
@daily Run once a day at midnight 0 0 0 * * * *
@hourly Run once an hour at the beginning of the hour 0 0 * * * * *
* Supports optional second field (before minute field) Other details
-------------
* If five fields are present, a wildcard year field is appended * If five fields are present, a wildcard year field is appended
* If six field are present, `0` is prepended as second field, that is, `* * * * * *` internally become `0 * * * * * *`. * If six field are present, `0` is prepended as second field, that is, `* * * * * *` internally become `0 * * * * * *`.
* Domain for day-of-week field is [0-7] instead of [0-6], 7 being Sunday (like 0). * Domain for day-of-week field is [0-7] instead of [0-6], 7 being Sunday (like 0).