Why not simply using :
classes:
"Last_Saturday" expression =>
"Saturday.((Day31|Day30|Day29|Day28|Day27|Day26|Day25)|(Day24.(April|June|September|November)|(Day23.Day22.February))";
commands:
Last_Saturday::
"do something";
It does not take into account leap year, but it should not fail until
2020, enough time to find a better solution...
Nicolas
Mark Burgess wrote:
> I never recommend using pipes in cfengine. You can do classmatch, AND, OR
> on the existing dates to accomplish the result.
>
> Perhaps first and last Mon-Sun are useful classes to build in.
>
> Matt Richards wrote:
>
>> okay, I got it. Kinda hacky with all the pipes:
>>
>> vars:
>> "year" string => execresult("/usr/bin/date +%Y","noshell");
>> "month" string => execresult("/usr/bin/date +%m","noshell");
>> "last_day" string => execresult("/usr/bin/cal $(month) $(year) |
>> awk '{print $7}' | grep -E "^[0-9]" | tail -1","useshell");
>>
>> classes:
>> "Last_Saturday" expression => classify("Day$(last_day)");
>>
>> On Wed, Mar 3, 2010 at 8:26 AM, Matt Richards <defraya...@gmail.com> wrote:
>>
>>> Interesting. I had something similar with how to schedule for the last
>>> day of the month (ya, the shell commands are cheating a bit):
>>>
>>> vars:
>>> "year" string => execresult("/usr/bin/date +%Y","noshell");
>>> "month" string => execresult("/usr/bin/date +%m","noshell");
>>> "last_day" string => execresult("/usr/bin/cal $(month) $(year) |
>>> grep . | fmt -1 | tail -1","useshell");
>>>
>>> classes:
>>> "End_Of_Month" expression => classify("Day$(last_day)");
>>>
>>> .
>>> .
>>> .
>>>
>>> End_of_Month.Hr23::
>>>
>>> So basically at 11:00pm on the last day of the month, it would fire
>>> off. I am thinking something similar might be possible for the last
>>> Saturday.
>>>
>>>
>>> 2010/3/3 <nwat...@symcor.com>:
>>>
>>>> Over at Ars there was a discussion about scheduling a cron job for the
>>>> last Saturday of each month. Alas, cron cannot do this on its own. What
>>>> followed as a lot of short scripts to help but very few were portable.
>>>>
>>>> One of the newer goals of Cfengine is to be an enterprise scheduler. For
>>>> fun and reputation how would you use Cfengine to schedule a job on the
>>>> last Saturday of each month?
>>>>
>>>> Sincerely,
>>>> --
>>>> Neil Watson
>>>> 416-673-3465
>>>>
>>>>
>>>>
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