#!/bin/sh

# IsHostAlive.sh
# Mon Dec  8 22:41:56 PST 2008
# Chieh Cheng
# http://www.CynosureX.com/

# GNU General Public License (GPL) Version 2, June 1991

usage ()
{
  scriptName=`basename "$0"`
  echo "  Usage:  ${scriptName} host"
}

if [ $# -eq 1 ]
then
  host="$1"
  os=`uname -s`

  case "${os}" in
    "Darwin")
      output=`ping -c 1 -t 1 ${host} 2>&1`
      ;;

    "Linux")
      output=`ping -c 1 -W 1 ${host} 2>&1`
      ;;

    *)
      output="Unsupported operating system."
      echo "${output}"
      ;;
  esac

  result=`echo "${output}" | grep -c " 0% packet loss"`
  echo ${result}
else
  usage
fi