How to scan IP range using nmap?

Shell Programming and Scripting
1

Scripting language : Bash Shell Script
I have to create function in which read IP addresses one by one from one file ( ip.txt ) and scan these IP using nmap .

2

What options from the nmap manual have you tried?

I have something that I've deployed here, but it is very cut-down in the information it returns, so it might not be what you want. What is your eventual goal? Is it:-

  • Find all ports open on a whole range
  • Find devices that are up in a range
  • Find which devices are not offering a particular port or are down
  • Something else?

There is hopefully a neat tool to save you some work, but you need to be clear what your goal is first.

Kind regards,
Robin

3

My goal:

  1. Find all ports open on a whole range.
4

Nevermind... I think my reply was wrong.... this may not be homework after all....

5

Thread is continued here.