<commit_before>---
layout:post
title:Sed 学习笔记
---<commit_msg>Update 2015-10-5-Sed-学习笔记.md<commit_after>---
title:Learning Note of Sed
---

> You must be heard the word, *on-the-fly*, when read some `sed` guide book. It's really a very powerful editor tool (we all know). So in this post, I wanna write down something of my journey in learning it. 
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