Get title of free book available on PacktPub everyday, and send it to phone as notification via IFTTT service (Android/iOS)

packtpub_free.sh

#!/bin/bash

# === how to use it? ===
# Create new APPLET on IFTTT.COM:
# THIS = webhooks (give it any name, and note: name + key)
# THAT = select phone notification, and in notification text put two variables: VALUE1 / VALUE2
#
# Run this script via cron ONCE per day - that's all :)
# Requrements: You need command line CURL on your server
# === Author ===
# Jakub 'unknow' Mrugalski
# https://mrugalski.pl

# put Your WebHook key from IFTTT service here
webhook_key=1111111111111111111111

# put webhook event here:
webhook_event=notify_phone

title=`curl -s https://www.packtpub.com/packt/offers/free-learning | grep -i 'dotd-title' -A2 | tail -n1 | sed 's/<[^>]*>//g' | tr -d "\t" | tr \" \'`
query='{"value1":"PacktPub FREE","value2":"'"$title"'"}'

out=`curl -s -X POST -H "Content-Type: application/json" -d "$query" https://maker.ifttt.com/trigger/$webhook_event/with/key/$webhook_key`

if [ $? == 0 ]; then
    echo "OK"
else
    echo "ERROR - query: $query";
    echo $out
fi