shell處理帶空格文件名

#!/usr/bin/env bash –xv

down_path=/d/360極速瀏覽器下載
#設置單詞分割符
IFS=$(echo -en "\n\b")
#文件目錄
lst=`ls ${down_path}`
#還原單詞分割符
IFS=$(echo -en "\n\t")
for itm in ${lst};do
    if test -e ${down_path}/${itm}; then
        echo ${itm}
    fi
done