需求：
从网页上抓取并下载图片
脚本内容如下：
#!/bin/bash
#filename:img_donwloader.sh
#function:download picture file
if [ $# -ne 3 ];
then
echo “usage: $0 URL -d DIRECTORY”
exit -1
fi
for i in {1..4}
do
case $1 in
-d) shift; directory=$1; shift;;
*) url=${url:-$1}; shift;;
esac
done
mkdir -p $directory
baseurl=$(echo $url | egrep -o “https?://[a-z.]+”)
curl -s $url | egrep -o “<img src=[^>]*>” |
sed ‘s/<img src=\”\([^”]*\).*/\1/g’ > /tmp/$$.list
sed -i “s|^/|$baseurl/|” /tmp/$$.list
cd $directory;
while read filename;
do
curl -s -O “$filename” –silent
done < /tmp/$$.list
使用方法：
./img_downloader.sh URL -d DIR
示例：
./img_downloader.sh http://www.betterit360.com/?p=171 -d images
查看下载的图片文件：
ll images
