Message from CRON

Ruben de Groot mail25 at bzerk.org
Tue Mar 9 03:09:23 PST 2004


On Mon, Mar 08, 2004 at 06:25:39PM -0500, Gerard Seibert typed:
> >From time to time, I receive a notification that I have mail in
> /var/mail/ges.
> 
> Upon checking, this is what I find:
> 
> 
> 
> >From ges at BudMan.cable.rcn.com Mon Mar  8 18:11:01 2004
> Return-Path: <ges at BudMan.cable.rcn.com>
> Received: from BudMan.cable.rcn.com (localhost [127.0.0.1])
> 	by BudMan.cable.rcn.com (8.12.10/8.12.10) with ESMTP id i28NB0Ja029641
> 	for <ges at BudMan.cable.rcn.com>; Mon, 8 Mar 2004 18:11:00 -0500 (EST)
> 	(envelope-from ges at BudMan.cable.rcn.com)
> Received: (from ges at localhost)
> 	by BudMan.cable.rcn.com (8.12.10/8.12.10/Submit) id i28NB0Qo029628;
> 	Mon, 8 Mar 2004 18:11:00 -0500 (EST)
> 	(envelope-from ges)
> Date: Mon, 8 Mar 2004 18:11:00 -0500 (EST)
> Message-Id: <200403082311.i28NB0Qo029628 at BudMan.cable.rcn.com>
> From: ges at BudMan.cable.rcn.com (Cron Daemon)
> To: ges at BudMan.cable.rcn.com
> Subject: Cron <ges at BudMan> operator /usr/libexec/save-entropy
> X-Cron-Env: <SHELL=/bin/sh>
> X-Cron-Env: <PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin>
> X-Cron-Env: <HOME=/home/ges>
> X-Cron-Env: <LOGNAME=ges>
> X-Cron-Env: <USER=ges>
> 
> operator: not found
> 
> >From ges at BudMan.cable.rcn.com Mon Mar  8 18:15:01 2004
> Return-Path: <ges at BudMan.cable.rcn.com>
> Received: from BudMan.cable.rcn.com (localhost [127.0.0.1])
> 	by BudMan.cable.rcn.com (8.12.10/8.12.10) with ESMTP id i28NF0Ja029878
> 	for <ges at BudMan.cable.rcn.com>; Mon, 8 Mar 2004 18:15:00 -0500 (EST)
> 	(envelope-from ges at BudMan.cable.rcn.com)
> Received: (from ges at localhost)
> 	by BudMan.cable.rcn.com (8.12.10/8.12.10/Submit) id i28NF0pd029876;
> 	Mon, 8 Mar 2004 18:15:00 -0500 (EST)
> 	(envelope-from ges)
> Date: Mon, 8 Mar 2004 18:15:00 -0500 (EST)
> Message-Id: <200403082315.i28NF0pd029876 at BudMan.cable.rcn.com>
> From: ges at BudMan.cable.rcn.com (Cron Daemon)
> To: ges at BudMan.cable.rcn.com
> Subject: Cron <ges at BudMan> root	/usr/libexec/atrun
> X-Cron-Env: <SHELL=/bin/sh>
> X-Cron-Env: <PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin>
> X-Cron-Env: <HOME=/home/ges>
> X-Cron-Env: <LOGNAME=ges>
> X-Cron-Env: <USER=ges>
> 
> root: not found
> 
> You will notice that these times are very close together. Actually, I have
> received messages with the times varying by only a few seconds. Why am I
> receiving these messages, and what are they trying to tell me?

It looks like you somehow managed to install the system crontab 
(/etc/crontab) as a users' crontab (/var/cron/tabs/ges). Check the 
output of "crontab -u ges -l".
In a user crontab there's no column "run as user x", so the usernames 
operator and root are mistaken for commands.

Ruben


> Thanks!
> 
> Gerard Seibert
> gerard-seibert at rcn.com
> 
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