#!/bin/sh

if [ $# -ne 1 ]; then echo "Usage: $0 word"; exit 1; fi

TOTAL=0
miss=0; hit=0;

while true; do
	TOTAL=$((TOTAL+1))
	ans=$(cat /dev/urandom | tr -dc 'a-zA-Z' | fold -w 100 | head -n1 | grep $1)
	if [ -x$ans = -x ]; then
		miss=$((miss+1))
	else
		echo "$ans"
		hit=$((hit+1))
	fi
	[ $hit -ge 5 -o $TOTAL -ge 10000 ] && break
done

part=$(echo "$hit $TOTAL" | awk '{ printf "%.2f", $1*100/$2}')

echo "Miss: $miss, Hit: $hit (${part}%)"