195. Tenth Line

https://leetcode.com/problems/tenth-line/description/

For example, assume that file.txt has the following content:

Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Line 9
Line 10

Your script should output the tenth line, which is:

Line 10

filename="file.txt"
i=0
result=""
while read line
do
        ((++i))
        if [ $i -eq 10 ]
        then
                result=$line
                break
        fi
done < $filename

echo $result