#!/bin/sh

for f in "$@"
do
  w=`cat "$f" | sed "s/  */\\n/g" | sed "s/[^a-zA-Z0-9]//g" | sed "s/[0-9]*//g" | sed "/^$/d" | wc -w`
  s=`cat "$f" | tr -d " \t\n\r" | sed "s/\./\\n/g" | sed "s/\?/\\n/g" | sed "s/\!/\\n/g" | wc -l`
  z=$(expr "$w" / "$s")
  echo $f:
  echo "  "$w words
  echo "  "$s sentences
  echo "  "The average sentence is $z words long.
done