solve tenthLine

README.md

@@ -19,3 +19,4 @@
 + [192 Word Frequency](shell/WordFrequency)
 + [193 Valid Phone Numbers](shell/ValidPhoneNumbers)
 + [194 Transpose File](shell/TransposeFile)
++ [195 Tenth Line](shell/TenthLine)

shell/TenthLine/README.md

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+# Tenth Line
+
+## Problem
+
+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
+```
+
+## Solution
+
+直接使用sed搞定
+
+## Code
+```bash
+#!/bin/bash
+sed -n '10p' file.txt
+```

shell/TenthLine/file.txt

@@ -0,0 +1,10 @@
+Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6
+Line 7
+Line 8
+Line 9
+Line 10

shell/TenthLine/tenthLine.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+sed -n '10p' file.txt