import subprocess
from time import gmtime, strftime

# cmd = "tnsping alias.fixer"
cmd = ['ping', '8.8.8.8', '-c 10']


def system_call(cmd):
    cmds = cmd
    # commstr not used.
    # Streams close at communicate() automatically.
    #commstr = '\n\n'
    try:

        sub = subprocess.Popen(args=cmds,
                               bufsize=1,
                               stdin=subprocess.PIPE,
                               stdout=subprocess.PIPE,
                               stderr=subprocess.PIPE)

        stdout, stderr = sub.communicate()

        if stderr:
            print strftime("%Y-%m-%d %H:%M:%S", gmtime()) + ' - ' + stderr
        else:
            print stdout
    except subprocess.CalledProcessError as e:
        print strftime("%Y-%m-%d %H:%M:%S", gmtime()) + ' - ' + e.output
        pass


while 1 == 1:
    system_call(cmd)