---
title: "Discussion on \"using regex to replace values of a certain variable  all files in a folder\" | Hashnode"
description: "Discussion on \"using regex to replace values of a certain variable  all files in a folder\". What is a Regular Expression?\nOn an abstract level a regular expression, regex for short, is a shorthand representation for a set. A set of strings.\nWhat are Regular Expressions used for?\nRegular expressions are useful in any scenario that benefits f..."
url: "https://hashnode.com/posts/using-regex-to-replace-values-of-a-certain-variable-all-files-in-a-folder/637d1cc9e79f0caea76f7e38"
---

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# [using regex to replace values of a certain variable all files in a folder](https://navmlk.com/using-regex-to-replace-values-of-a-certain-variable-all-files-in-a-folder?utm_source=hashnode&utm_medium=feed)

What is a Regular Expression? On an abstract level a regular expression, regex for short, is a shorthand representation for a set. A set of strings. What are Regular Expressions used for? Regular expressions are useful in any scenario that benefits f...

Nov 22, 2022 · 1 min read · navmlk.com  
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