calin

                    #!/bin/bash -e
# 
# "watches" over changes on the nexus4 url every 10 seconds and writes a twitter notification when something changes, then dies peacefully
#
# start it with nohup script_name.sh
# thanks to Luka on http://360percents.com/posts/command-line-twitter-status-update-for-linux-and-mac/

#REQUIRED PARAMS
URL=https://play.google.com/store/devices/details?id=nexus_4_8gb
username="PLACE HERE YOUR TWITTER EMAIL"
password="PLACE HERE YOUR TWITTER PASS"
 
#EXTRA OPTIONS
uagent="Mozilla/5.0" #user agent (fake a browser)
sleeptime=0 #add pause between requests

while true; do
#clear
if [[ -f new_page.html ]]; then
  mv new_page.html old_page.html
fi
wget $URL -O new_page.html > /dev/null 2>&1
diff ./new_page.html ./old_page.html > /tmp/changes.diff
if [[ $? -ne 0 ]]; then
    echo "The file has changed!!!"
    value=`cat /tmp/changes.diff`
    tweet="nexus4 URL change: $value"
    date

    if [ $(echo "$tweet" | wc -c) -gt 140 ]; then
#        echo "[FAIL] Tweet must not be longer than 140 chars!" && exit 1
        tweet=${tweet:0:140}
    elif [ "$tweet" == "" ]; then
        echo "[FAIL] Nothing to tweet. Enter your text as argument." && exit 1
    fi
     
    touch "cookie.txt" #create a temp. cookie file
     
    #GRAB LOGIN TOKENS
    echo "[ ] Fetching twitter.com..." && sleep $sleeptime
    initpage=$(curl -s -b "cookie.txt" -c "cookie.txt" -L --sslv3 -A "$uagent" "https://mobile.twitter.com/session/new")
    token=$(echo "$initpage" | grep "authenticity_token" | sed -e 's/.*value="//' | sed -e 's/" \/>.*//')
     
    #LOGIN
    echo "[ ] Submitting the login form..." && sleep $sleeptime
    loginpage=$(curl -s -b "cookie.txt" -c "cookie.txt" -L --sslv3 -A "$uagent" -d "authenticity_token=$token&username=$username&password=$password" "https://mobile.twitter.com/session")
     
    #GRAB COMPOSE TWEET TOKENS
    echo "[ ] Getting compose tweet page..." && sleep $sleeptime
    composepage=$(curl -s -b "cookie.txt" -c "cookie.txt" -L -A "$uagent" "https://mobile.twitter.com/compose/tweet")
     
    #TWEET
    echo "[ ] Posting a new tweet: $tweet..." && sleep $sleeptime
    tweettoken=$(echo "$composepage" | grep "authenticity_token" | sed -e 's/.*value="//' | sed -e 's/" \/>.*//' | tail -n 1)
    update=$(curl -s -b "cookie.txt" -c "cookie.txt" -L --sslv3 -A "$uagent" -d "authenticity_token=$tweettoken&tweet[text]=$tweet&tweet[display_coordinates]=false" "https://mobile.twitter.com/")
     
    #GRAB LOGOUT TOKENS
    logoutpage=$(curl -s -b "cookie.txt" -c "cookie.txt" -L --sslv3 -A "$uagent" "https://mobile.twitter.com/account")
     
    #LOGOUT
    echo "[ ] Logging out..." && sleep $sleeptime
    logouttoken=$(echo "$logoutpage" | grep "authenticity_token" | sed -e 's/.*value="//' | sed -e 's/" \/>.*//' | tail -n 1)
    logout=$(curl -s -b "cookie.txt" -c "cookie.txt" -L --sslv3 -A "$uagent" -d "authenticity_token=$logouttoken" "https://mobile.twitter.com/session/destroy")
     
    rm "cookie.txt"
    exit 1
else
    echo "No change"
    tweet="No_change URL: $URL"
    date
fi
# sleep 10 secs
sleep 10
done