Facebook

#!/bin/sh

update_fb() {
source_url="https://www.facebook.com/cutespring"
url="http://api.facebook.com/restserver.php?method=links.getStats&urls=$source_url"
num="`wget -O - $url 2>/dev/null | grep total | sed -e 's/^[ ]*<total_count>\([0-9][0-9]*\).*/\1/g'`"
xnum=$((0 + num))
if [ "$xnum" -gt 0 ]; then
  echo "updating $xnum"
  echo "$xnum." >/dev/ttyACM0
  echo "$xnum." > &2
  ret=$?
fi
}


check_network_connectivity () {
run=1
while [ $run -eq 1 ]; do
  ping -c 1 168.95.1.1
  run=$?
done
}


# main
check_network_connectivity


while [ 1 ] ; do 
  update_fb
  sleep 5
done

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Commented by coopermaa:

Save above code as fb.sh, then run as follows:

$ ./fb.sh 2> /dev/ttyACM0