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From: brian@casemo.UUCP (Brian Cuthie )
Newsgroups: comp.unix.questions
Subject: Re: --- Cron: Bizarre double execution?!? ---
Message-ID: <241@casemo.UUCP>
Date: Fri, 13-Nov-87 13:55:59 EST
Article-I.D.: casemo.241
Posted: Fri Nov 13 13:55:59 1987
Date-Received: Sun, 15-Nov-87 10:59:27 EST
References: <236@zap.UUCP>
Organization: CASE Communications, Columbia, MD
Lines: 34
Keywords: Cron, Weirdness

In article <236@zap.UUCP>, fortin@zap.UUCP (Denis Fortin) writes:
> Greetings...
> 
> 	I have an extremely puzzling problem on my System V Release 2
> system (Microport).  In the past few weeks, I have noticed that my cron 
> log file contains many entries which look like this:
> ... 
> 	Somehow, it seems that cron gets confused and starts executing every
> command *twice* -- this has a pretty devastating effect with some commands!
> I have checked and re-checked: the commands appear only *once* in the
> crontab command files (crontab -l) and I have only one incarnation of
> cron running!


You don't, by chance, have a cron entry to fix the slow clock, do you ?  I
have the same problem with my cron.  It runs everything twice.  As best
I can tell, it's caused by cron getting confused by the time slipping
suddenly ahead periodicly.   

I have a cron entry that set's the clock from the CMOS clock every hour.
I need this because as of 2.3.0-L, Microport still hasn't fixed the clock
(at least not on my machine).  If you have a similar entry, try removing
it.  Removing mine makes the problem go away.  

Sure would be nice if Microport would fix the clock !

Cheers,
Brian

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Brian Cuthie
CASE Communications
Columbia, MD 21046
(301) 290 - 7443