Working with Nmap through the os and subprocess modules

In this section, we will review how to execute nmap from the os and subprocess modules without needing to install any other dependency.

If you need to execute an nmap command with the os module, you don't need to install any additional dependencies and it's the easiest way to launch a nmap command through the shell.

You can find the following code in the nmap_os.py file:

import os
nmap_command = "nmap -sT 127.0.0.1"
os.system(nmap_command)

This could be the execution of the previous script where we are getting open ports on localhost:

$ sudo python3 nmap_os.py
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000092s latency).
Not shown: 998 closed ports
PORT    STATE SERVICE
22/tcp  open  ssh
631/tcp open  ipp

Similarly, we could use the subprocess module that provides the Popen method for executing the nmap command and pass the needed...