How to scan IP range using nmap?

 
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Old 03-14-2017
How to scan IP range using nmap?

Scripting language : Bash Shell Script

1. problem statement
I have to create function in which read IP addresses one by one from one file (iplist.txt) and scan these IP using nmap. This scan IP's output is saved in output.txt file and parse output.txt to save only open ports with particular IP in parse.txt file.
format of parse.txt file:

Code:
Code:
ip             port
x.x.x.x        x

2. My goal:
1. Find all ports open on a whole range.
2. Save only open ports with IP address in another file. Don't save filtered or closed ports in this file.

eg. Format of file:
IP_address Open_port
Code:
192.168.0.1         21
192.168.0.1         80
....

so I have write the script which scan IP range. I just want script of second option.
I have attached the script. Please help me if possible to implement second option. In second option, my script take open port/tcp and all other details but i want only ip address with open port.

Mumbai University, Mumbai, India and Information Technology




Moderator's Comments:
Mod Comment Seriously: Please use CODE tags as required by forum rules!

And, use homework form correctly and entirely.

Last edited by RudiC; 03-14-2017 at 10:07 AM.. Reason: Added CODE tags.
 
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