ping to array of ip, starting on 2 and finishing on 255, (customizable range)

ping_sweep.py

#!/usr/bin/python3
import sys, subprocess

if len(sys.argv) != 2:
	print ("ping_sweep.py 192.168.254.")
else :
	cmdping = "ping -c 2 "+sys.argv[1]
	for x in range(2,32): # 1, 255
		p = subprocess.Popen(cmdping+str(x), shell = True, stderr = subprocess.PIPE)
		while True:
			out = p.stderr.read(1)
			if out == b'' and p.poll() != None:
				break
			if out != '':
				sys.stdout.write(out.decode(sys.stdout.encoding))
				sys.stdout.flush()