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pythonnetwork-programmingcmdping
Nathaniel Sharp
Nathaniel Sharp

Reputation: 27

Python: How do I ping a range of IP addresses?

I want to ping a range of IP addresses in Python and print either: "The IP is reachable with a X% percent package loss" or "The IP isn't reachable with a X% package loss"

The range I want to try is 192.168.0.X with X being the range of 0-255

Here is my code so far;

import shlex
import subprocess
import os

for x in range(0, 256):
    cmd=shlex.split("ping -cl 192.168.0." + str(x))
    try:
       output = subprocess.check_output(cmd)
    except subprocess.CalledProcessError,e:
       #Will print the command failed with its exit status
       print "The IP {0} isn't reachable".format(cmd[-1])
    else:
       print "The IP {0} is reachable".format(cmd[-1])

what is wrong with my code? also I noticed when I try the command "ping -cl 192.168.0.2" it says that -cl is an administrator only command. I am an admin on my computer and I ran cmd as admin so whats wrong with that?

I am using Windows 8.1 Python v2.7.9

Upvotes: 2

Views: 3353

Answers (2)

Amr El Aswar
Amr El Aswar

Reputation: 3515

If you have scapy module installed you should try using :

clients = arping("192.168.1.*")
print clients

It is fast and will also print the mac adress associated with the ip so it is quite helpful.

Upvotes: 0

Padraic Cunningham
Padraic Cunningham

Reputation: 180391

If you are using linux and you just want to see the packet loss:

import shlex
from subprocess import PIPE, Popen


cmd1 = shlex.split("grep -oP '\d+(?=% packet loss)'")
for x in range(1, 256):
    cmd = "ping  -c 4  192.168.43.{}".format(x).split()
    p1 = Popen(cmd, stdout=PIPE, stderr=PIPE)
    p2 = Popen(cmd1, stdin=p1.stdout, stdout=PIPE)
    p1.stdout.close()
    output = p2.communicate()[0].rstrip()
    if output == "100":
        print("{}% percent packet loss from unreachable ip {}".format(output, cmd[-1]))
    else:
        print("{}% percent packet loss from reachable ip {}".format(output, cmd[-1]))

Disclaimer I don't use windows so am open to correction but this may work:

for x in range(1, 256):
    cmd = "ping  -c 1  192.168.43.{}".format(x).split()
    p1 = Popen(cmd, stdout=PIPE, stderr=PIPE)
    lines = p1.communicate()[0].splitlines()
    output = (lines[-2]).rsplit(None,5)
    output = output[-5].rstrip()
    if output == "100%":
        print("{} percent packet loss from unreachable ip {}".format(output, cmd[-1]))
    else:
        print("{} percent packet loss from reachable ip {}".format(output, cmd[-1]))

Upvotes: 1

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