Say connection status

connection-alert.py

# Debian: apt-get install espeak
# Other OS: http://espeak.sourceforge.net/download.html

import sys
import commands
import subprocess
from time import sleep
from datetime import datetime


ip = sys.argv[1]
if sys.argv[2:]:
    name = sys.argv[2]
else:
    name = ip.split('.')[-1]
cmd_ping = ['ping', '-c', '3', '-t', '3', ip]

last_connected = None
while True:
    s = commands.getoutput(' '.join(cmd_ping))
    for line in s.splitlines():
        if line.find('packet loss') < 0:
            continue
        connected = line.find(' 0% packet loss') > -1
        if connected == last_connected:
            continue
        last_connected = connected 
        say_connected = connected and 'connected' or 'disconnected'
        print('{t} {ip} {c}'.format(
            t=datetime.now().strftime('%Y-%m-%d %H:%M:%S'), ip=ip,
            c=say_connected))
        say = '{n} {connected}'.format(n=name, connected=say_connected)
        cmd_speak = ['espeak', say]
        subprocess.call(cmd_speak)
    sleep(5)