From 41b97f7fffe265cd4db0a7ec7fed1a2a601a37f2 Mon Sep 17 00:00:00 2001
From: Gaurav Padam <1032201077@tcetmumbai.in>
Date: Fri, 6 Oct 2023 20:10:37 +0530
Subject: [PATCH] check_urls=free-programming-books-subjects.md (#9847)

---
 books/free-programming-books-subjects.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/books/free-programming-books-subjects.md b/books/free-programming-books-subjects.md
index 1db9dcd2c..b481e03ce 100644
--- a/books/free-programming-books-subjects.md
+++ b/books/free-programming-books-subjects.md
@@ -660,6 +660,7 @@ Books that cover a specific programming language can be found in the [BY PROGRAM
 
 ### Open Source Ecosystem
 
+* [500 lines or less](https://github.com/aosabook/500lines) - Build from Source Code
 * [Contributing to opensource: the right way](https://github.com/Mte90/Contribute-to-opensource-the-right-way) - Daniele Scasciafratte
 * [Data Journalism Handbook](http://datajournalismhandbook.org)
 * [Free as in Freedom: Richard Stallman and the free software revolution](https://archive.org/details/faif-2.0) - Sam Williams (PDF)