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Full Discussion: question about cron
Top Forums UNIX for Dummies Questions & Answers question about cron Post 302099036 by hcclnoodles on Friday 8th of December 2006 04:50:52 AM
Old 12-08-2006
question about cron
I have a script which goes out and installs a package on a box remotely and im trying to get it to add a cron job too..but im having a few problems, whilst it does add the entry it wont run unless I connect to the machine , crontab -e, then :wq. This re-reads the configuration file and it will now run. so i tried in my script the following methods

1) I tried to edit the cron file for root directly

Code:
ssh $mybox 'echo "0 22 * * 5 /opt/SUNWexplo/bin/explorer -q -e" >> /var/spool/cron/crontabs/root'

But i realised that the process would need to be HUP'ed to re-read this conf file so i tried adding

Code:
pkill -HUP cron

I come in the next morning and I check /var/cron/log and nothing has run. However, as i said, if i crontab -e and then save it immediately (:wq) then it will work fine



2) Ok, as far as im aware the above should have worked but I thought id try another method, this according to my colleague would definately work. Output crontab -l to a temp file , append the line to the temp file and use crontab <filename>. to re-read it in...
Code:
ssh $mybox 'crontab -l > /tmp/cron1'
ssh $mybox 'echo "0 22 * * 5 /opt/SUNWexplo/bin/explorer -q -e" >> /tmp/cron1'
ssh $mybox 'crontab /tmp/cron1'

Same thing, come in next morning nothings happened, log onto box crontab -e, then immediately same it (:wq) and all is working ..

Does anybody have any idea on how i can get this to work

cheers
 

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LEARN ABOUT CENTOS

yum-cron

yum-cron(8)															       yum-cron(8)

NAME

       yum-cron - an interface to convieniently call yum from cron

SYNOPSIS

       yum-cron [config-file]

DESCRIPTION

       yum-cron  is  an  alternate  interface to yum that is optimised to be convenient to call from cron.  It provides methods to keep repository
       metadata up to date, and to check for, download, and apply updates.  Rather than accepting many different command line arguments, the  dif-
       ferent functions of yum-cron can be accessed through config files.

       config-file  is	used  to optionally specify the path to the configuration file to use.	If it is not given, the default configuration file
       will be used.  It is useful to be able to specify different configuration files for different use cases.  For  example,	one  configuration
       file  might  be set to update the repository metadata, and a line could be added to the crontab to run yum-cron frequently using this file.
       Then, another configuration file might be set to install updates, and yum-cron could be run from cron using this file just once each day.

FILES

       /etc/yum/yum-cron.conf
       /etc/yum/yum-cron-hourly.conf

SEE ALSO

       yum (8)

AUTHORS

       See the Authors file included with this program.

BUGS

       There of course aren't any bugs, but if you find any, you should email
	the mailing list, yum@lists.baseurl.org, or consult bugzilla.

Nick Jacek															       yum-cron(8)
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