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On 11/17/2010 04:51 PM, Adam Young wrote:
> On 11/17/2010 04:31 PM, Simo Sorce wrote:
>> On Wed, 17 Nov 2010 16:07:24 -0500
>> Stephen Gallagher<sgall...@redhat.com> wrote:
>>> This will require two changes to the HBAC schema. First of all, we
>>> plan to drop the week-of-the-month concept entirely and replace it
>>> with septet-of-the-month. This is being done to eliminate the
>>> ambiguity entirely. Secondly, we will need to describe
>>> day-of-the-septet in the grammar (where the day of the septet
>>> describes the name of the weekday, and not its numerical position
>>> within the septet, as that would be a useless and complex duplication
>>> of the day-of-the-month concept).
>> I think we can keep using 1-7 in the septet with the
>> understanding that 1 is always Monday, 2 is always Tuesday and so on.
> I'd like to propose that we have a goal to be as close to the Cron
> grammar as practicable. So we should allow 0 or 7 for Sunday. This is in
> keeping with your proposal.
> Here are the examples from the crontab 5 manpage;
> # run five minutes after midnight, every day
> 5 0 * * * $HOME/bin/daily.job >> $HOME/tmp/out 2>&1
> # run at 2:15pm on the first of every month -- output mailed to paul
> 15 14 1 * * $HOME/bin/monthly
> # run at 10 pm on weekdays, annoy Joe
> 0 22 * * 1-5 mail -s "It’s 10pm" joe%Joe,%%Where are your kids?%
> 23 0-23/2 * * * echo "run 23 minutes after midn, 2am, 4am ..., everyday"
> 5 4 * * sun echo "run at 5 after 4 every sunday"
> I'm not sure that 'First Wednesday of the month' is possible with this
> grammar, either. Yet, somehow, it has survived many years.
0 8 1-7 * 3 (read, 08:00 on the Wednesday that falls between the 1st
and 7th day of the 6th month)
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