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X-Authentication-Warning:	slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date:	Tue, 15 Apr 2003 10:24:36 -0400 (EDT)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	BB <canofspam AT att DOT net>
cc:	cygwin AT cygwin DOT com
Subject:	Re: cron on Win9x works
In-Reply-To:	<b7h4ao$23f$1@main.gmane.org>
Message-ID:	<Pine.GSO.4.44.0304151022440.26381-100000@slinky.cs.nyu.edu>
Importance:	Normal
MIME-Version:	1.0

Reply inline below:

On Tue, 15 Apr 2003, BB wrote:

> "Luciano" <lucianoav AT gmx DOT net> wrote in message
> news:Xns935AE4A876607lucianoavgmxnet AT 80 DOT 91 DOT 224 DOT 249...
> > I read it again, but I am not sure I understand it. The hack proposed
> > by BB him/herself
>
> him
>
> > rm -R -f /var/cron/tabs.sav
> > cp -R /var/cron/tabs /var/cron/tabs.sav
> > rm -R -f /var/cron/tabs
> > mv /var/cron/tabs.sav /var/cron/tabs

BTW, is there a particular reason why you can't do it in 3 steps:
  rm -Rf /var/cron/tabs.sav
  mv /var/cron/tabs /var/cron/tabs.sav
  cp -R /var/cron/tabs.sav /var/cron/tabs
?
	Igor

> cron compares the timestamp of it's 'old' database of tasks to the timestamp
> of the /var/corn/tabs directory.  Assuming the all 4 steps (rm, cp, rm, mv)
> worked, the newly created /var/cron/tabs should have a new timestamp.  Make
> sure it is getting changed to a new time.
>
> If a directory already exists when a mv is done to it, the directory will
> not get a new timestamp.  For instance, if for some reason the third step
> removing the /var/cron/tabs directory fails, the last step mv will not
> update the timestamp.
>
> I would think that this kludge should not be a long term solution.  A change
> to cron should fix this problem.
>
> Also, beware that if you are doing the 4 steps and the tabs directory does
> not exist when cron checks for it, cron will terminate.
>
> BB
>
> > doesn't work here. Cron still skips tasks. I also tried touch'ing the
> > tab file, but it didn't work either. Elusive.
> >
> > Luciano ES
> > Santos, SP - Brasil
> >
> > ********************************
> > Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu> wrote in
> > news:Pine DOT GSO DOT 4 DOT 44 DOT 0304112049570 DOT 26381-100000 AT slinky DOT cs DOT nyu DOT edu:
> >
> > > Please reread the message.  Cron doesn't detect changes to
> > > /var/cron/tabs, so you have to make sure the timestamp changes
> > > before cron will run new commands.
> > >      Igor

-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

Knowledge is an unending adventure at the edge of uncertainty.
  -- Leto II


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