shell/TenthLine.sh

# Source : https://leetcode.com/problems/tenth-line/
# Author : Hao Chen
# Date   : 2015-03-31

################################################################################## 
# 
# 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.

# Solution One
awk 'NR==10{print $0}' file.txt

# Solution Two
sed -n '10p' file.txt