TenthLine.sh

# Source : https://leetcode.com/problems/tenth-line/
# Author : Dean Shi
# Date   : 2015-05-29

##################################################################################
#
#  How would you print just the 10th line of a file?
#
#  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
#
#  [show hint]
#  Hint:
#  1. If the file contains less than 10 lines, what should you output?
#  2. There's at least three different solutions. Try to explore all possibilities.
#
##################################################################################

#!/bin/sh


# Read from the file file.txt and output the tenth line to stdout.
cat file.txt | sed -n 10p

# or

sed -n 10p file.txt