Shell Programming and Scripting

stored_word()
{
number=$RANDOM
let "number %= 21"
case $number in
0 ) echo "energy"    ;;  1 ) echo "touch" ;;
2 ) echo "climbing" ;;   3 ) echo "declare" ;;
4 ) echo "marry"  ;;     5 ) echo "relax"   ;;
6 ) echo "bugs"     ;;   7 ) echo "inaccessible" ;;
8 ) echo "country" ;;    9 ) echo "folder" ;;
10 ) echo "individual" ;; 11 ) echo "youngest" ;;
12 ) echo "disco" ;; 13 ) echo "disturbed" ;;
14 ) echo "company" ;; 15 ) echo "scientific" ;;
16 ) echo "disaster" ;; 17 ) echo "protection" ;;
18 ) echo "curiously" ;; 19 ) echo "deranging" ;;
21 ) echo "facilities"

esac
 }

        . hangman_words
        word=$(stored_word)
        letters=$(echo $word | wc -c)
        letters=$(( $letters - 1 ))
        template="$(echo $word | tr '[a-z A-Z 0-9]' '.')"
        remaining=$letters

number=$(( RANDOM % 21 + 1 ))
word=$( sed -n "$number p" words_list_file )
letters=$(echo $word | wc -c)
letters=$(( $letters - 1 ))
template="$(echo $word | tr '[a-z A-Z 0-9]' '.')"
remaining=$letters

stored_word()
{
   if [ -z "$stored_words_count" ]
   then
      stored_words_count=$(wc -l < words.txt)
   fi
   number=$RANDOM
   let "number = number % stored_words_count + 1"
   tail +$number words.txt | head -1
}

init_stored_words()
{
   while read w
   do
      words[${#words[@]}]=$w
   done < words.txt
   stored_words_count=${#words[@]}
}
stored_word()
{
   [ -z "$stored_words_count" ] && init_stored_words
   number=$RANDOM
   let "number %= stored_words_count"
   echo  ${words[$number]}
}

no=$(( RANDOM % 21 + 1 ))
while read str
do
	(( no = no - 1 ))
	if [[ $no -eq 0 ]]; then
		word=$str
		break
	fi
done < words_list_file 
letters=$(echo $word | wc -c)
letters=$(( $letters - 1 ))
template="$(echo $word | tr '[a-z A-Z 0-9]' '.')"
remaining=$letters