HackerRank Cut #4 problem solution

In this HackerRank Cut #4 problem solution, we need to display the first four characters from each line of text.

Input Format

A text file with lines of ASCII text only.

Constraints

1 <= N <= 100

(N is the number of lines of text in the input file)

Output Format

The output should contain N lines. Each line should contain just the first four characters of the corresponding input line.

Sample Input

Hello

World

how are you

Sample Output

Hell

Worl

how 

Problem solution.

while read line
do
    echo $line | cut -c 1-4
done

Second solution.

cut -c1,2,3,4

Third solution.

cut -c1-4