On Tue, 2007-02-27 at 17:14 +0000, 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?
The man page warns that interactive (stdout) output is close, but not
identical to Normal (-oN filespec) output and this seems to be one of
those cases. It appears that stdout will add 'host down' notices with
the -v flag, but -oN won't. Perhaps this is a bug, or perhaps this is
the intended consequence. Regardless, you can get output which includes
a host's alive and dead status with the -oG output. Try:
nmap -iL c:\my_host_list.txt -sP -oG c:\scan_results.txt -append-output -v -log-errors
Alternatively, you could simply use your platform's pipe or redirect
capabilities to capture the 'interactive' (stdout) stream.
-- William
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Received on Feb 27 2007
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