Leetcode 195 Tenth Line

given a text file file.txt, print just the 10th line of the file.

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

note:
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.

q.describe:use bash to print the tenth line of file.txt which is provide by the question  setter.

solution:

awk 'nr == 10' file.txt
/*

awk [-f  field-separator]  'commands'  input-file(s) 

*/
detail describe of awk in bash,please click in:
https://www.cyberciti.biz/faq/bash-scripting-using-awk/

comment: this is my first blog article,if there are something wrong in the article,please point out,thanks.