Linux automate backup copy to windows script

#!/bin/bash

SHELL=/bin/bash


# get sysdate to variable
wd=`date +%Y_%m_%d`


# get previous day to variable if required
#wd=`date -d "-1 day" +"%Y_%m_%d"`


mount -t smbfs -o username=administrator,password=password //[IP]/Exp /share/winShare

tar -czPf /share/winShare/MiddleDB_$wd.tgz /orabackup/backup/$wd/*


umount /share/winShare