#!/bin/bash
# Exam 2020/06/16 - Exercise 4

longest_word=""
length_longest=0

# Scan the file word by word
for word in $(cat file.txt)
do
    # Detect the length of $word
    length=$(echo $word|wc -c)
    #length=${#word} # Other possibility
    
    if [ $length -gt $length_longest ]
    then
        length_longest=$length
        longest_word=$word
    fi
done

echo $longest_word