shell处理带空格文件名

#!/usr/bin/env bash –xv

down_path=/d/360极速浏览器下载
#设置单词分割符
IFS=$(echo -en "\n\b")
#文件目录
lst=`ls ${down_path}`
#还原单词分割符
IFS=$(echo -en "\n\t")
for itm in ${lst};do
    if test -e ${down_path}/${itm}; then
        echo ${itm}
    fi
done