【leetcode-shell】Tenth Line

随便找了一个shell脚本的题目。

打印出第十行的内容。

解法一：循环，不过效率最差，排在了最后

# Read from the file file.txt and output the tenth line to stdout.#!/bin/bashdeclare count=0cat file.txt | while read linedo    if [ $count = 9 ];then        echo $line        exit 0    fi    let count=$count+1done

解法二：sed，最快速，也最简洁

# Read from the file file.txt and output the tenth line to stdout.#!/bin/bashsed -n 10p file.txt