Linux Shell编程实战---shell实现图片下载神器

$ cat dowonload_image.sh
#!/bin/bash
#########################################
#图片下载器                              #
#script_name: dowonload_image.sh         #
#author:weixiaoxin write by 2017-09-20   #
#########################################

function get_second_level_url(){
#declare -A url_array
UA="Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24"
curl -L -s -o tmp.html -H "User-Agent: $UA"  $1
u=`cat tmp.html|grep -E -o "/Html/63/[0-9]+\.html\" target=\"_blank\"><span>[0-9]{2}-[0-9]{2}</span>"|sed 's/ /_/ '`
for line in $u
do
#echo $line
url=`echo $line|grep -E -o "/Html/63/[0-9]+\.html"`
datetime=`echo $line|grep -E -o "[0-9]{2}-[0-9]{2}"`
url_date+="$url,$datetime\n"
#url_array[$url]=$datetime
done

echo  ${url_date}
}

function get_image(){
UA="Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24"
curl -L -s -o tmp.html -H "User-Agent: $UA"  $1
title=`cat tmp.html|grep -E -o "<title>.*</title>"|sed 's/[<title>|</title>]//g'`
datetime=$2
img_url=`cat tmp.html|grep -E -o "https://img.997pp.com/tp/[0-9]{4}/[0-9]{2}/[a-zA-Z0-9]+.jpg"`

if [ ! -d "data/${datetime}/${title}" ]
then
mkdir -p data/$datetime/${title}
fi

n=1
for i in $img_url
do
echo $i
i=`echo $i|sed 's/https/http/g'`
curl -L -s -o data/${datetime}/${title}/$n.jpg -H "User-Agent: $UA"  $i
sleep 2
let n=n+1
echo $n
done
}

baseurl="https://www.1368k.com/Html/63/"
first_url="${baseurl}index.html"

second_url=`get_second_level_url ${first_url}`

for line in `echo -e $second_url`
do
#echo $line
url=`echo $line|awk -F',' '{print $1}'`
url="https://www.1368k.com/$url"
datetime=`echo $line|awk -F',' '{print $2}'`
#echo $url $datetime
get_image $url $datetime

sleep 5
done