Python in Kali Linux

[coolcassie]

Hi, I'm new to this forum so apologies if this is in the wrong part of the forum.

I'm using Kali Linux and am running it on VirtualBox. I've created a python file and saved it in a folder called bin and think it is in the home directory.
This is the code I've used for the python file:

#!/bin/python import sys, os
if len(sys.argv) == 2 :
os.system("nmap -n -sn -oG - " + sys.argv[1] + "|head -n -1|tail -n +2|cut -d' ' -f2")
exit()

I'm trying to get the file to run via the terminal window but am unsure which code to use for this in the terminal window.
This is the current line I'm trying out in the terminal window to run the .py file:
chmod o+x ~/home/bin/listip.py

Has anyone got any suggestions why this won't work? Alternatively if a similar question has been posted can someone direct me to that?


Thanks

[snippsat]

I'm trying to get the file to run via the terminal window but am unsure which code to use for this in the terminal window.

First you should test Python version that comes with Kali Linux and pip(pip3 -V).
Example:

tom@tom-VirtualBox:~$ python -V
Python 2.7.15rc1
 
tom@tom-VirtualBox:~$ python3 -V
Python 3.6.5 

So you should by using Python 3,then use python3 my_code.py to run from command line.

Should not be using os.system() anymore,use subprocess it's more powerful and safer.
A example run command and catch output.

# n_map.py
import subprocess

ip = '198.18.32.1'
out = subprocess.run(['nmap', '-n', '-sn', '-oG', '-', ip], capture_output=True)
print(out.stdout.decode())

Output:
# Nmap 7.12 scan initiated Wed Nov 13 02:57:35 2019 as: nmap -n -sn -oG - 198.18.32.1
Host: 198.18.32.1 ()	Status: Up
# Nmap done at Wed Nov 13 02:57:35 2019 -- 1 IP address (1 host up) scanned in 0.30 second

So if run code over for you it could be python3 n_map.py.
This is the normal way to run code,there is no need to chmod o+x(Make the script as executable) every time to run.

[coolcassie]

I'm trying to get the file to run via the terminal window but am unsure which code to use for this in the terminal window.

First you should test Python version that comes with Kali Linux and pip(pip3 -V).
Example:

tom@tom-VirtualBox:~$ python -V
Python 2.7.15rc1
 
tom@tom-VirtualBox:~$ python3 -V
Python 3.6.5 

So you should by using Python 3,then use python3 my_code.py to run from command line.

Should not be using os.system() anymore,use subprocess it's more powerful and safer.
A example run command and catch output.

# n_map.py
import subprocess

ip = '198.18.32.1'
out = subprocess.run(['nmap', '-n', '-sn', '-oG', '-', ip], capture_output=True)
print(out.stdout.decode())

Output:
# Nmap 7.12 scan initiated Wed Nov 13 02:57:35 2019 as: nmap -n -sn -oG - 198.18.32.1
Host: 198.18.32.1 ()	Status: Up
# Nmap done at Wed Nov 13 02:57:35 2019 -- 1 IP address (1 host up) scanned in 0.30 second

So if run code over for you it could be python3 n_map.py.
This is the normal way to run code,there is no need to chmod o+x(Make the script as executable) every time to run.

I only just saw your reply but will definitely try this out and let you know how it goes.
Thanks.