for file in /wls/*
do
    if test -f $file
    then
        arr=(${arr[*]} $file)
    fi
done
echo ${arr[@]}

for file in /wls/*
do
    if test -f $file
    then
        arr=(${arr[*]} $file)
    else
        for subfile in $file
            do
                if test -f $subfile
                then
                    arr=(${arr[*]} $subfile)
                fi
            done
    fi
done
echo ${arr[@]}

function getdir(){
    echo $1
    for file in $1/*
    do
    if test -f $file
    then
        echo $file
        arr=(${arr[*]} $file)
    else
        getdir $file
    fi
    done
}
getdir /wls
echo ${arr[@]}