#!/bin/bash
Username="MarcHoppe@gmx.de"
Password="insta0815"
Docs=~/Documents
OutputDir=~/Documents/ePub

curl --cookie-jar ${Docs}/cjar --data "username=$Username" -d "password=${Password}" --output ${Docs}/insta.html http://www.instapaper.com/user/login
curl -b ${Docs}/cjar --output ${OutputDir}/insta.epub http://www.instapaper.com/epub 
rm -f ${Docs}/cjar ${Docs}/insta.html