[OS] Lab 6.8

#!/bin/bash
RESULT=0
for FILE in `ls $1`
do
        if [ ! -d $FILE ]
        then
                RESULT=$(( $RESULT + `ls -l $1/$FILE | awk '{print $6}'` ))
        else
                RESULT=$(( $RESULT + `bash $0 $FILE` ))
        fi
done
echo $RESULT