Crontab Strange Problem

Crontab Strange Problem

[RCS]

I had a program that was schedule in crontab. 
Suddenly after some days it started to show the following error: 

Segmentation Fault 

The problem is that if I run the some command that is in crontab myself (not 
automatically) it works in the way it should, without printing the error. 

Any suggestions???? 

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Re: Crontab Strange Problem

[Glynn Clements]

RCS wrote:

> I had a program that was schedule in crontab. 
> Suddenly after some days it started to show the following error: 
> 
> Segmentation Fault 
> 
> The problem is that if I run the some command that is in crontab myself (not 
> automatically) it works in the way it should, without printing the error. 
> 
> Any suggestions???? 

Process environment. I.e. environment variables, current directory,
standard input/output/error descriptors, resource limits etc. All of
these will differ when running a program via cron compared to running
it from a shell.

-- 
Glynn Clements <glynn.clements@virgin.net>

Re: Crontab Strange Problem

[RCS]

It generates a core file, but I don't know how to use it. 
The user is the same and he is "root", so no permission 
can stop him from execute the program. 

>does it do core dump? if so it is a good start point feed it to gdb 
>could it be permissions related issue..? 
>is the same user running the cron job & when you ran it yourself? 
> 
>^&-----Original Message----- 
>^&From: linux-admin-owner@vger.kernel.org 
>^&[mailto:linux-admin-owner@vger.kernel.org]On Behalf Of RCS 
>^&Sent: Thursday, September 19, 2002 8:31 PM 
>^&To: linux-admin@vger.kernel.org 
>^&Subject: Crontab Strange Problem 
>^& 
>^& 
>^&I had a program that was schedule in crontab. 
>^&Suddenly after some days it started to show the following error: 
>^& 
>^&Segmentation Fault 
>^& 
>^&The problem is that if I run the some command that is in crontab 
>^&myself (not 
>^&automatically) it works in the way it should, without printing the error. 
>^& 
>^&Any suggestions???? 
>^& 
>^&_________________________________________________________ 
>^&Oi! Você quer um iG-mail gratuito? 
>^&Então clique aqui: http://registro.ig.com.br/ 
>^& 
>^&- 
>^&To unsubscribe from this list: send the line "unsubscribe linux-admin" in 
>^&the body of a message to majordomo@vger.kernel.org 
>^&More majordomo info at http://vger.kernel.org/majordomo-info.html 
> 
>---------- 

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RE: Crontab Strange Problem

[Bruce Harvey]

Something missing in the environment for the cron job?

In any event, what (even though not connected) changed on the system in the
interim?  Anything new installed, uninstalled, reconfigured?

---------------------------------------
Bruce T. Harvey,  Special Projects Developer
bruceh@routescape.com, www.routescape.com
Insight Distribution Systems --- Hunt Valley, MD




-----Original Message-----
From: RCS [mailto:cryptik@ig.com.br]
Sent: Thursday, September 19, 2002 8:31 PM
To: linux-admin@vger.kernel.org
Subject: Crontab Strange Problem


I had a program that was schedule in crontab. 
Suddenly after some days it started to show the following error: 

Segmentation Fault 

The problem is that if I run the some command that is in crontab myself (not

automatically) it works in the way it should, without printing the error. 

Any suggestions???? 

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Re: Crontab Strange Problem

[RCS]

I discodered the error on my crontab but I dont know how to solve it. 

The program on the crontab works fine when typed on the unix shell, but when 
it is started by the crontab, the program is cant find a library. 

The user from the crontab and the user that I used to run in unix shell are 
the same. Both root 

Can anyone help me???? 

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Re: Crontab Strange Problem

[Craig Sharp]

Root and users do not have any path information when run from cron.  You must be sure to specify your paths in your programs if you want them to run.

Craig

>>> RCS <cryptik@ig.com.br> 09/20/02 10:25AM >>>
I discodered the error on my crontab but I dont know how to solve it. 

The program on the crontab works fine when typed on the unix shell, but when 
it is started by the crontab, the program is cant find a library. 

The user from the crontab and the user that I used to run in unix shell are 
the same. Both root 

Can anyone help me???? 

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Re: Crontab Strange Problem

[johnjulian1]

you might try this as your cron command:
su - root -c <yourprogram>


RCS <cryptik@ig.com.br> wrote:

>I discodered the error on my crontab but I dont know how to solve it. 
>
>The program on the crontab works fine when typed on the unix shell, but when 
>it is started by the crontab, the program is cant find a library. 
>
>The user from the crontab and the user that I used to run in unix shell are 
>the same. Both root 
>
>Can anyone help me???? 
>
>_________________________________________________________
>Oi! Você quer um iG-mail gratuito?
>Então clique aqui: http://registro.ig.com.br/
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

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RE: Crontab Strange Problem

[Bruce Harvey]

Set your environment variables ... most 'at' jobs inherit the environment of
their starter.  Cron, on the other hand, has no clue of what environment to
run, and running a user's .profile could have disasterous consequences when
run by a 'tty-less' process, so either put the environment in the
program/script that's running, or set it prior to running it (i.e., cron a
script that sets the environment and then runs the program, passing all the
parameters, etc.).

---------------------------------------
Bruce T. Harvey,  Special Projects Developer
bruceh@routescape.com, www.routescape.com
Insight Distribution Systems --- Hunt Valley, MD




-----Original Message-----
From: RCS [mailto:cryptik@ig.com.br]
Sent: Friday, September 20, 2002 10:26 AM
To: linux-admin@vger.kernel.org
Subject: Re: Crontab Strange Problem


I discodered the error on my crontab but I dont know how to solve it. 

The program on the crontab works fine when typed on the unix shell, but when

it is started by the crontab, the program is cant find a library. 

The user from the crontab and the user that I used to run in unix shell are 
the same. Both root 

Can anyone help me???? 

_________________________________________________________
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