#!/bin/sh

# Extension.sh
# Tue Feb 26 15:12:43 PST 2008
# Chieh Cheng

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

scriptName=`basename "$0"`

usage ()
{
  echo "  Usage: ${scriptName} \"path\""
}

if [ $# -eq 1 ]
then
  path="$1"
  file=`basename "${path}"`
  str=`echo "${file}" | sed "s/ /_/g"`
  tokens=`Tokenize.sh "." "${str}"`

  pos=2
  tmp=`echo "${tokens}" | Token.sh 2`
  while [ "${tmp}" != "" ]
  do
    extension="${tmp}"
    pos=`expr ${pos} + 1`
    tmp=`echo "${tokens}" | Token.sh ${pos}`
  done

  echo "${extension}"
else
  usage
fi