Thomas,
You could then, as suggested by Martin, run cron every sunday and then have
a script check the week for you (bash will do it).
You can get the week number with: 'date +%W' (0~52). Now, to check if it is
indeed the 3rd week, divide that by 3 and if the reminder is 0 that's the
week you schedule downtime (translated to bash: 'expr $(date +%W) % 3').

Rafael


On Mon, Jan 4, 2010 at 8:51 AM, <[email protected]> wrote:

> Hi Marty
>
> youre right I mean every 3rd Sunday not the 3th Sunday per month...
>
> so, how can I that schedule with crontab, sorry I don't know...
>
> Greets
> Thomas
>
> -------- Original-Nachricht --------
> > Datum: Mon, 4 Jan 2010 22:36:06 +1100
> > Von: Martin Barry <[email protected]>
> > An: Opsview Users <[email protected]>
> > Betreff: Re: [opsview-users] schedule downtime
>
> > $quoted_author = "sOeMe" ;
> > >
> > > thanks for the input, but an crontab entry do not fix my problem, then
> > it
> > > is possible that the 3th sunday is not between 15-21 ...
> >
> > Then you mean something different to what most people would understand
> > "3rd
> > Sunday of the month" to be.
> >
> >
> > > I start at 10 January 2010 (first Sunday) the 3th Sunday is now the 31
> > January
> > > and so on
> >
> > Any reason you are ignoring 3 January 2010 which is also a Sunday?
> >
> > Or have we all misunderstood and you meant "every 3rd Sunday"? That would
> > require being scheduled every Sunday by CRON and then doing some kind of
> > "day of year" or "week of year" calculation taking into account any
> offset
> > like which Sunday it first ran.
> >
> > cheers
> > Marty
> > _______________________________________________
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> > [email protected]
> > http://lists.opsview.org/lists/listinfo/opsview-users
>
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