Shell Programming and Scripting

import os hostname = "myclient" 
response = os.system("ping -c 1 " + hostname)  

if response == 0:   
      print hostname, 'Reboot successful!'
else:
      print hostname, 'Rebooting..!'

Rebooting ...............
Reboot successful!

import os, sys, time
hostname = "myclient"
response = os.system("ping -c 1 " + hostname + " >/dev/null 2>&1")

if response == 0:
      print hostname, 'Reboot successful!'
      sys.exit(0)
else:
      sys.stderr.write(hostname + ' Rebooting..')

sleep_wait=1
max_ping_wait=10
count=0
while (count < max_ping_wait and os.system("ping -c 1 " + hostname + " >/dev/null 2>&1")):
      sys.stderr.write('.')
      time.sleep(sleep_wait)
      count+=1

if (count < max_ping_wait):
    print hostname, 'Reboot successful!'
    sys.exit(0)
else:
    print hostname, 'Reboot unsuccessful.'
    sys.exit(1)

import subprocess
import sys

host = 'myclient'
cmd = ['ping', '-c2', '-W 5', host ]
done = False
timeout = 10 # default time out after ten times, set to -1 to disable timeout

print "Rebooting .",
while not done and timeout:
        response = subprocess.Popen(cmd, stdout=subprocess.PIPE)
        stdout, stderr = response.communicate()
        if response.returncode == 0:
            print "Server up!"
            done = True
        else:
            sys.stdout.write('.')
            timeout -= 1
if not done:
       print "\nServer failed to respond"