[CentOS] cron.weekly

Matt,

Keith answer applies to centos 5 and 6, mine to centos 7. In any case,
scripts will exec one at a time in alphabetical order.

On Tue, Sep 16, 2014 at 7:27 PM, Keith Keller
<kkeller at wombat.san-francisco.ca.us> wrote:
> On 2014-09-16, Warren Young <warren at etr-usa.com> wrote:
>> On 9/16/2014 13:24, Matt wrote:
>>> If I have multiple files in cron.weekly and one script takes hours to
>>> finish.  Will it block other scripts in cron.weekly?
>>
>> I doubt it, based on the results of this crontab on EL7:
>>
>> 51 13 * * * echo start 1 ; sleep 2m ; echo end 1
>> 51 13 * * * echo start 2 ; sleep 2m ; echo end 2
>>
>> At 13:51, nothing appeared in my mail file.  Two minutes later, two
>> different messages appeared, each with the expected "echo" outputs.
>> Thus, they must have run in parallel.
>
> Those are two distinct cron jobs.  The scripts in /etc/cron.weekly are
> all run by the same cron job in /etc/crontab.
>
> 47 6    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
>
> I believe that run-parts runs each script in serial, and therefore a
> long-running weekly script will block.
>
> If you don't care when you get the output, and have only one
> long-running script, you can rename it so that it runs last.  Otherwise,
> you'd need to put the long-running job into its own cron entry.
>
> --keith
>
>
>
> --
> kkeller at wombat.san-francisco.ca.us
>
>
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-- 
Marcelo

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