thank u all

On Mon, 2008-07-28 at 16:11 +0300, Javor Nikolov wrote:

Hi,

If you you want a quicker execution - you could also run the pings to separate hosts in parallel starting the jobs in background (&) and waiting for them with "wait" after that. You'll have to be more careful about the outputs in that case - e.g. redirect them to separate files.

Regards, Javor

On Mon, Jul 28, 2008 at 2:57 PM, Laurence Alexander Hurst L.A.Hurst@lboro.ac.uk wrote: 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


    _______________________________________________
    CentOS mailing list
    CentOS@centos.org
    http://lists.centos.org/mailman/listinfo/centos

---

CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Bill Campbell escribió:

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

Hello,

I have done something before with nmap -sP <target> time ago. Later you can grep the response to know whether an IP address is alive or not.

Hope it helps,

Hello, This is a running shell script for ping multiple host it provides result directly: if host is successfully ping then it returns Host is alive. otherwise Host is not alive Try this i am working with that in my local n/w.

#/bin/bash for n in {1..5}; do host=192.168.1.$n ping -c2 $host &> /dev/null if [ $? = 0 ] ; then printf "%-30s is alive \n" $host else printf "%-30s is not alive \n" $host fi done

Note: 1.Replace ip with your ip range 2.Replace the no. of ip according to your need.(means value of n in for loop)