topic Re: Need help in scripting in Operating System - HP-UX

Need help in scripting

PVR — Mon, 19 Sep 2005 09:25:27 GMT

Hi !

I want to append the cronfile of node2 from node1 as below;

rsh node1 cat /usr/local/bin/ssh-cron-new >> node2:/var/spool/cron/crontabs/root

I know that this won't work.

Can you help me by suggesting a solution ?

Re: Need help in scripting

Alan Meyer_4 — Mon, 19 Sep 2005 09:28:46 GMT

Assuming that rsh is configured,

from node2 enter;

rsh node1 'cat /usr/local/bin/ssh-cron-new' >> /var/spool/cron/crontabs/root

Re: Need help in scripting

Pete Randall — Mon, 19 Sep 2005 09:30:52 GMT

I would start by capturing node2's crontab:

crontab -l > /root/crontab

Then add on node1's crontab

remsh node1 cat /usr/local/bin/ssh-cron-new >> /root/crontab

At least I think that's what you're trying to accomplish.

Pete

Re: Need help in scripting

TwoProc — Mon, 19 Sep 2005 09:33:19 GMT

rsh node1 "cat /usr/local/bin/ssh-cron-new" | rsh node2 "cat >> /var/spool/cron/crontabs/root"

Re: Need help in scripting

PVR — Mon, 19 Sep 2005 09:35:19 GMT

Sorry !

I forgot to mention that rsh is configured.

I have to run this script only from node1 and rsh is configured (w/o password) only from node1 to node2.

From node2 to node1 it is not configured. I have around 150 boxes where I need to update the cron file.

Re: Need help in scripting

Alan Meyer_4 — Mon, 19 Sep 2005 09:39:07 GMT

given that then

I've never pushed out a file with rsh like John did, but this should also work.

rcp -rp node2:/var/spool/cron/crontabs/root /tmp/root.cron
cat /usr/local/bin/ssh-cron-new >> /tmp/root.cron
rcp -rp /tmp/root.cron node2:/var/spool/cron/crontabs/root

Re: Need help in scripting

TwoProc — Mon, 19 Sep 2005 09:40:11 GMT

OK since you're running from node 1, then

cat /usr/local/bin/ssh-cron-new | rsh node2 " cat >> /var/spool/cron/crontabs/root"

But, since you've got rsh, you've probably also got rcp that you can use:

scp /usr/local/bion/ssh-cron-new node2:/var/spool/cron/crontabs/root

Re: Need help in scripting

Alan Meyer_4 — Mon, 19 Sep 2005 09:41:29 GMT

you can also put all the nodenames in a data file then loop them

cat nodes.dat |while read NODE ;do
rcp -rp $NODE:/var/spool/cron/crontabs/root /tmp/root.cron
cat /usr/local/bin/ssh-cron-new >> /tmp/root.cron
rcp -rp /tmp/root.cron $NODE:/var/spool/cron/crontabs/root
done

Re: Need help in scripting

PVR — Mon, 19 Sep 2005 09:43:37 GMT

Thanks to all for your immediate response !

Solution suggested by John helped me...