Split a string into two English words, if possible

wordsplit.sh

#!/bin/bash

# A solution to the two word version of
# http://thenoisychannel.com/2011/08/08/retiring-a-great-interview-problem
# in bash, because I can.

length_of_input=`echo -n "$1" | wc -c`

for len in `seq $length_of_input`
do
    left=`echo -n "$1" | cut -c1-$len`
    let "rem = $len + 1"
    right=`echo -n "$1" | cut -c$rem-`
    grep ^$left$ /usr/share/dict/words >/dev/null
    left_in=$?
    grep ^$right$ /usr/share/dict/words >/dev/null
    right_in=$?
    if [ "$left_in" -eq 0 ] && [ "$right_in" -eq 0 ]
    then
        echo $left $right
        break
    fi
done