[SATLUG] Ping Scan A Range of Addresses

[Larry Blodgett]

On Sep 30, 2004, at 3:22 PM, Ed Coates wrote:

> Larry,
>
> I don't remember if you said which Linux distro that you were using,
> but seq is located in the coreutils package for SuSE 9.1.  Install
> that, or similar, and it will work for  you.  Also remember (you've
> probably figured it out alread, but I forgot to mention it) that this
> script will only do number from 1 - 10.  You'll have to adjust the
> number for 1 254 for your subnet.
>
> Ed
>
Ed,
As you can see I am using BSD (jot)

#!/bin/bash
for ii in `jot - 1 20 1`
do
      echo "testing ${ii}"
     if ping -c 1 129.162.184.${ii} > /dev/null 2>&1
     then
         echo "129.162.184.${ii} is alive"
     fi
done

Just one last question, would you pleas explain the if statement.
It doesn't seem to be working. Every test comes back alive.
Larry