CentOS - May 2010 - How to schedule for a repeated task?

Dear All
I need to schedule for a repeated task on my CentOS server, as the
followings:
-) Telnet to a remote node
-) Issue a command
-) Capture the output in a log
-) Logout from Telnet
-) Wait for a prescribed time interval
-) Then redo , but append the subsequent output in just on file
Can you please let me know which options do we have to write such a task?
Thank you
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On Sat, May 1, 2010 at 10:10 AM, hadi motamedi <motamedi24 at gmail.com>
wrote:
> Dear All
> I need to schedule for a repeated task on my CentOS server, as the
> followings:
> -) Telnet to a remote node
> -) Issue a command
> -) Capture the output in a log
> -) Logout from Telnet
> -) Wait for a prescribed time interval
> -) Then redo , but append the subsequent output in just on file
> Can you please let me know which options do we have to write such a task?
> Thank you
Use cron to schedule the tasks.

if you need to automate an interactive command you can use expect [1][2]

[1] http://expect.nist.gov/
[2] http://en.wikipedia.org/wiki/Expect


HTH

-- 
Athmane Madjoudj

hadi motamedi wrote:
> Dear All
> I need to schedule for a repeated task on my CentOS server, as the 
> followings:
> -) Telnet to a remote node
> -) Issue a command
> -) Capture the output in a log
> -) Logout from Telnet
> -) Wait for a prescribed time interval
> -) Then redo , but append the subsequent output in just on file
> Can you please let me know which options do we have to write such a task?
> Thank you
If the remote end of this is some dumb device that can only do telnet, use 
expect, kermit, or perl's Net::Telnet module to chat with it.  If it is
another
computer, set up ssh keys and just run remote commands directly.  And use cron 
to schedule the runs.

-- 
   Les Mikesell
    lesmikesell at gmail.com

On Sat, May 01, 2010 at 10:10:49AM +0100, hadi motamedi wrote:


Study up on 'vron' and 'crontab'.

////jerry

> Dear All
> I need to schedule for a repeated task on my CentOS server, as the
> followings:
> -) Telnet to a remote node
> -) Issue a command
> -) Capture the output in a log
> -) Logout from Telnet
> -) Wait for a prescribed time interval
> -) Then redo , but append the subsequent output in just on file
> Can you please let me know which options do we have to write such a task?
> Thank you
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> http://lists.centos.org/mailman/listinfo/centos