Bash Magic 8-Ball

eightball.sh

#!/usr/bin/env bash

# Usage: ./eightball.sh 
#   Answers a yes-no question.

Affirmative=(
"It is certain."
"It is decidedly so."
"Without a doubt."
"Yes – definitely."
"You may rely on it."
"As I see it, yes."
"Most likely."
"Outlook good."
"Yes."
"Signs point to yes."
)

NonCommittal=(
"Reply hazy, try again."
"Ask again later."
"Better not tell you now."
"Cannot predict now."
"Concentrate and ask again."
)

Negative=(
"Don't count on it."
"My reply is no."
"My sources say no."
"Outlook not so good."
"Very doubtful."
)

answers=("${Affirmative[@]}" "${NonCommittal[@]}" "${Negative[@]}")
len=${#answers[@]}
index=$(($RANDOM % $len))
echo ${answers[$index]}