# Assignment 1
# URL
# by Steven Lehrburger
# lehrburger (at) gmail (dot) com
# NYU Interactive Telecommunications Program, Spring 2009
# Programming A to Z with Adam Parrish

rm output.txt   
grep -E "  "  <sonnets.txt | cut -c 3- >couplets.txt

linecount=$(wc -l couplets.txt | tr -s " " | cut -d " " -f 2)
while [ $linecount -gt 0 ]
do
  head -n 1 <couplets.txt >>firstlines.txt
  head -n 2 <couplets.txt | tail -n 1 >>secondlines.txt
  tail -n +3 <couplets.txt > couplets_temp.txt
  mv couplets_temp.txt couplets.txt
  linecount=$(( $linecount - 2 ))
done
rm couplets.txt

coupletcount=$(wc -l firstlines.txt | tr -s " " | cut -d " " -f 2)
while [ $coupletcount -gt 1 ]
do
  head -n 1 <firstlines.txt >>output.txt
  head -n 2 <firstlines.txt | tail -n 1 >>output.txt
  tail -n +3 <firstlines.txt >firstlines_temp.txt
  mv firstlines_temp.txt firstlines.txt
  head -n 1 <secondlines.txt >>output.txt
  head -n 2 <secondlines.txt | tail -n 1 >>output.txt
  tail -n +3 <secondlines.txt >secondlines_temp.txt
  mv secondlines_temp.txt secondlines.txt

  coupletcount=$(( $coupletcount - 1 ))
done
rm firstlines.txt
rm secondlines.txt