# LeetCode Solution, Easy, 195. Tenth Line

# [195. Tenth Line](https://leetcode.com/problems/tenth-line/)

### 題目敘述

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 are at least three different solutions. Try to explore all possibilities.

#### 題目翻譯

輸出第十行的資料，至少有三種解法，嘗試看看怎麼做。如果不到十筆資料的話，你應該輸出什麼呢？

### 解法解析

這邊有一個[討論](https://leetcode.com/problems/tenth-line/discuss/55544/Share-four-different-solutions)滿值得看看的。

#### 解法範例

##### Bash

**Runtime**

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

**Memory**

```bash
# Read from the file file.txt and output the tenth line to stdout.
tail -n+10 file.txt | head -n1
```