Re: hosts NOT alive

[Jesse Charbneau <jess () thecharbneaus com>]

joe sadfsdf wrote:
> Hello All,
>
> Give a list of hosts, I want to determine which ones are DOWN. I'm 
> trying NMap because it can give me really interesting info about the 
> hosts which are up, but I can't get it to just tell me who is down!
>
> nmap -iL c:\my_host_list.txt -sP -oN c:\scan_results.txt 
> -append-output -v -log-errors
>
> In the command shell, these options show me which hosts are up and 
> which are down, however scan_results.txt only contains information 
> about which hosts were up. In the command shell and my resulting file, 
> I only want to log information about which hosts are down... how do I 
> do this?
>
> thanks
>
> joe
>
> ps, i hope this isn't a repost... i sent earlier but i think it was 
> denied.
>
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how are your hosts configured? Are they firewalled?

for simple testing, I usually do something like `ping -c 2 -w 1 
[host|ip] > /dev/null && echo Alive || echo down`

that assumes that the hosts are not blocking pings.



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