C5_11

#!/bin/bash
echo "nhap thu muc thu nhat: "
read dir1
echo "nhap thu muc thu 2: "
read dir2
if test ! -d $dir1
then
    echo "thu muc "$dir1" khong ton tai"
fi
if test ! -d $dir2
then
    echo "thu muc "$dir2" khong ton tai"
fi
if [ -d $dir1 ] && [ -d $dir2 ]
then
    ls -l $dir1 | awk '$1 != "total" {print $1,$9}' | while read output
        do
        array=($output)
            if [ ${array[0]:0:1} == '-' ]
            then
                if [ -f $dir2"/"${array[1]} ]
                then
                    rm -f $dir1"/"${array[1]}
                fi
            fi
        done
fi