CentOS - Jul 2008 - Shell script - ping

hi,

		how to write a scripts which launches 10 pings to different
destinations at execution of single shell scripts

please help me any ideas

regards,
Gopinath

Gopinath Achari wrote:
> hi,
> 
> 		how to write a scripts which launches 10 pings to different
> destinations at execution of single shell scripts
> 
> please help me any ideas
> 
> regards,
> Gopinath
Do you mean something like:
ping -c10 host1
ping -c10 host2
....
which will ping host1 10 times, then host2 10 times etc. (see `man ping` 
for details of the options).

If you have a list of hosts in a file, you could do:
for host in `cat [filename]`
do
	ping -c10 $host
done

or:

while read host
do
	ping -c10 $host
done << [filename]

If you only want to ping each host once, you can substitute '-c10' with 
'-c1' (again, see the man page).

Hope this helps
Laurence

On Mon, Jul 28, 2008, Gopinath Achari wrote:
>hi,
>
>		how to write a scripts which launches 10 pings to different
>destinations at execution of single shell scripts
>
>please help me any ideas
If your goal is to test connectivity, you might look at the perl
Net::Ping module.  ``perldoc Net::Ping'' has several examples of
checking one or more systems to see if they are alive.

BTW:  Anybody know of a python equivalent to this?

Bill
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totalitarian state. -- Isabel Paterson, God of the Machine

I really like 'fping' for use in shell scripts.  See:
http://www.fping.com/ and http://fping.sourceforge.net/man/

It can be 'yum installed' from the CentOS RPMforge repo.

So in your script you can just do
fping -c 10 <dest1> <dest2> ... <destN>

I don't understand exactly what 'scripts which launches 10 pings'
and
'execution of single shell scripts' means.  So don't think I can
help
with the scripting part...

On Mon, 28 Jul 2008, Gopinath Achari wrote:
> hi,
>
> 		how to write a scripts which launches 10 pings to different
> destinations at execution of single shell scripts
>
> please help me any ideas
>
> regards,
> Gopinath
>