From a3d83cbf6f6cc23a136730faaad1374f206c39aa Mon Sep 17 00:00:00 2001 From: dhirajchaurasiya10 Date: Tue, 8 Oct 2024 12:28:18 +0545 Subject: [PATCH] add license notation of The little Book of Semaphores --- books/free-programming-books-subjects.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/books/free-programming-books-subjects.md b/books/free-programming-books-subjects.md index d525a45cd..0a3e7e742 100644 --- a/books/free-programming-books-subjects.md +++ b/books/free-programming-books-subjects.md @@ -740,7 +740,7 @@ Books that cover a specific programming language can be found in the [BY PROGRAM * [Project Oberon: The Design of an Operating System, a Compiler, and a Computer](https://people.inf.ethz.ch/wirth/ProjectOberon/index.html) - Niklaus Wirth, Jürg Gutknecht (PDF) * [The Art of Unix Programming](http://catb.org/esr/writings/taoup/html/) - Eric S. Raymond (HTML) * [The Little Book About OS Development](https://littleosbook.github.io) - Erik Helin, Adam Renberg - (PDF, HTML) -* [The Little Book of Semaphores](https://greenteapress.com/semaphores/) - Allen B. Downey (PDF) +* [The Little Book of Semaphores](https://greenteapress.com/semaphores/) - Allen B. Downey (PDF) (CC BY-NC-SA 4.0) * [Think OS: A Brief Introduction to Operating Systems](https://www.greenteapress.com/thinkos/index.html) - Allen B. Downey (PDF) * [UNIX Application and System Programming, lecture notes](http://www.compsci.hunter.cuny.edu/~sweiss/course_materials/unix_lecture_notes.php) - Stewart Weiss (PDF) * [Writing a Simple Operating System from Scratch](https://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures/os-dev.pdf) - Nick Blundell (PDF)