Shell脚本实现批量下载资源并保留原始路径

http://su.bdimg.com/static/superplus/img/logo_white_ee663702.png
http://su.bdimg.com/static/superplus/img/logo_white_ee663703.png
http://su.bdimg.com/static/superplus/img/logo_white_ee663701.png
http://su.bdimg.com/static/superplus/img/logo_white_ee663704.png
http://su.bdimg.com/static/superplus/img/logo_white_ee663705.png
http://su.bdimg.com/static/superplus/img/logo_white_ee663706.png

#!/bin/bash
# desc: download resource
# author: 十年后的卢哥哥

mydir=`pwd`

while read line
do
{
    if [ -n "$line" ]
    then
        cd $mydir
        url=$(echo "$line" | tr -d '\r')
        picdir=$(echo $url | sed -r 's/http:\/\///g')
        picname=$(echo ${picdir##*/})
        picpath=$(echo ${picdir%/*})
        mkdir -p $picpath
        cd $picpath
        wget -O $picname `echo $url`
    fi
}
done <$1
exit 0

tr -d '\r'

${picdir##*/}

${picdir%/*}

sh download.sh url.txt