Shell Programming and Scripting

ls $FILE_NAME | while read FNAME
do
sftp -v -oport=nn $FTP_USER@$FTP_HOST <<EOF 2>&1 | tee -a ${LOG_FILE_NAME}
cd ${TGT_FOLDER_NAME}
lcd ${SRC_FOLDER_NAME}
put ${FNAME}
EOF
if [ $? -ne 0 ];then
   echo "sftp fails"
   exit
fi 
mv ${SRC_FOLDER_NAME}/$FNAME $TGT_ARCH
if [ $? -ne 0 ];then
  echo "Archiving failed  please check the log " | tee -a  ${LOG_FILE_NAME}
  FLAG=3
  exit $FLAG
else
  echo "Archiving succeded" for $FILE_NAME | tee -a  ${LOG_FILE_NAME}
fi
done