Re: Nmap oprions
From: Daniel Miessler (daniel_at_dmiessler.com)
Date: 06/27/05
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Date: Mon, 27 Jun 2005 14:04:15 -0400 To: hecber@gmail.com
On Jun 24, 2005, at 4:14 PM, Hecber Cordova wrote:
>> I need to scan my big network for port 21 on many
>> hosts.
>>
>> I want that nmap will show me just the hosts which the
>> port found open. I know that I can do this with grep
>> but im not sure about the syntex.
I like this method:
nmap -n -p21 -oG output_file | cut -d" " -f2 | grep ^[0-9]
This will print your Nmap output in grepable format, cut out the
second field (which will be an IP due to the -n switch in the Nmap
command), and then make sure the field starts with a number. That
should work for you.
Here's my own short primer that may be of some use to you:
http://dmiessler.com/study/nmap
Cheers,
-- Daniel R. Miessler M: daniel@dmiessler.com W: http://dmiessler.com G: 0x316BC712
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