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Facing issues while running a cronjob !

 
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Top Forums UNIX for Dummies Questions & Answers Facing issues while running a cronjob !
# 1  
Old 07-12-2012
Facing issues while running a cronjob !
Hi,

I am trying to run a cronjob. But while doing so I am getting the following error message :-


Code:
can't open yourfile in /var/spool/cron/crontabs directory.
No such file or directory


How can I resolve this issue ?

Please help.

Thanks
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# 2  
Old 07-12-2012
Well the error messgae suggests it is not there...
Did you look inside /var/spool/cron/crontabs directory?

How did you load your job scheduling?
# 3  
Old 07-12-2012
hi,

Thanks for prompt reply !

When I am trying to access the path. The below message is shown :-

Code:
 
ABC@XXX:/var/spool/cron# cd crontabs
ksh: crontabs: permission denied

I tried to load the job scheduling from this ABC user account.

Does it means that this user can't do the job scheduling ?

Should I try to do the job scheduling from root/admin account ?

Please suggest !
# 4  
Old 07-12-2012
/var/spool/cron/crontabs is often only accessible to root but not always :
Code:
zra:/var/spool/cron $ ll
total 8
dr-xr-xr-x   5 bin        bin           1024 Oct  4  2011 .
dr-xr-xr-x  15 bin        bin           1024 Jun 11  2002 ..
dr-xr-xr-x   2 bin        bin             96 Oct  4  2011 atjobs
-r--r--r--   1 bin        bin            342 Nov  7  1997 crontab.root
dr-xr-xr-x   2 bin        bin             96 Nov 24  2010 crontabs
drwxrwxrwt   2 root       sys           1024 Jul 11 20:20 tmp

it contains the cron of users allowed to use cron, for that you will have to look in /var/adm/cron what you have in cron.allow ( or cron.deny) file

Next question : Where is your cron file ? a good habit is to put in comment where it is to be found and always load /modify it there ( can be in user home directory...) because I saw a few times people desperate having lost their file, have no copies of it since they only use(d)
Code:
crontab -e

( meaning they are using the system's copy in /var/spool/cron/crontab).
Last edited by vbe; 07-12-2012 at 11:13 AM..
# 5  
Old 07-12-2012
I tried using the ABC to get the details using :-
Code:
ABC@XXX:/var/spool/cron# ls -l
total 0
drwxrwx---    2 bin      cron            256 Jan 19 11:31 atjobs
drwxrwx---    2 bin      cron            256 Jul 10 16:24 crontabs

From this it seems that the user ABC is not listed here !
Afterwards I tried the same using root account and the following was displayed :-
Code:
root@XXX:/var/spool/cron/crontabs# ls -l
total 56
-rw-r--r--    1 adm      cron           2020 Feb 28 2007  adm
-rw-------    1 root     cron            222 Jan 22 2008  hostmon
-rw-------    1 root     cron            225 Jul  9 15:15 root
-rw-------    1 root     cron             85 Jun 22 15:11 root-5JULLY2012
-rw-r--r--    1 sys      cron            853 Feb 28 2007  sys
-rw-------    1 root     cron            199 Jul 10 16:24 tcadm
-rw-r--r--    1 root     cron           1122 Feb 28 2007  uucp





Other issue :- When I executed the following I am getting
Code:
root@XXX: /PPP/TRY/pXX/ACV/XXX/XXX /logs# crontab -l
14 15 22 6 5 /PPP/TRY/pXX/ACV/XXX/XXX/XXX/CronScriptCheck/Script.ksh
20 15 * * *  /PPP/TRY/pXX/ACV/XXX/XXX/XXX/CronScriptCheck/ AScript.ksh

Now with the above job scheduling can I run another job scheduling at the same time in parallel to all or do I have to club all these jobs in one cronjob ?

Please suggest !
# 6  
Old 07-12-2012
If you have root account, then add your user in cron.allow (in /var/adm/cron/ directory) if cron. allow does not exist nor cron.deny (or cron.deny empty...), then anybody can use cron...

The best is to have a cronfile per user / product admin, but then you have no idea what is scheduled unless you read all the files... One is the best for reading and to see for performance issues /contention etc but then on that (root?) person can modify/change... Not suitable in production environments where DBAs are not going to let anyone touch what they plan nor sysadmin, and so you find a few operators with production job scheduling
# 7  
Old 07-12-2012
Here is from a aix (6.1) box:
Code:
n12:/home/vbe $ ll /var/adm/cron
total 116520
dr-xr-x---    2 bin      cron            256 Apr 30 2009  .
drwxrwxr-x   14 root     adm            4096 Jul 11 2011  ..
prw-------    1 root     cron              0 Jul 12 16:15 FIFO
-rw-r-----    1 bin      cron              4 Apr 30 2009  at.deny
-rw-r-----    1 bin      cron              3 Apr 30 2009  cron.deny
-rw-rw-r--    1 bin      bin        59620574 Jul 12 16:55 log
-rw-r--r--    1 root     sys            1313 Apr 30 2009  queuedefs

You can have only one of the files cron.allow OR cron.deny, here having cron.deny empty means all can use cron...
 
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