Facebook+1

#!/bin/sh

update_fb() {
  count=$(wget -O - "http://api.facebook.com/restserver.p...peiHackerspace" 2>/dev/null | grep -oP "(?<=\<total\_count\>).*?(?=\<\/total\_count\>)")
  
  echo "updating $count" 
  echo "$count." >&2
}

while [ 1 ] ; do 
  update_fb
  sleep 1
done

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Save as fb.sh, then run as follows:

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