BASH short exercise to show while, for loops, ifs and parameter parsing.

dictionary.sh

#!/bin/bash

if [ $# -eq 1 ]; then 
	foo=$1
	
	while [ true ]; do

		for (( i=0; i<${#foo}; i++ )); do
	  		letter="${foo:$i:1}"
		done

		sleep 2 

		foo=$(cat /usr/share/dict/words | grep ^$letter. | sort -R | head -1)
		
		echo $foo

	done
else 
	echo "wrong paramethers"
fi