Add tutorial #204

README.md

@@ -337,6 +337,7 @@
 * [**C**: _Learn how to write a hash table in C_](https://github.com/jamesroutley/write-a-hash-table)
 * [**C**: _Writing an SVG Library_](http://www.code-in-c.com/writing-svg-library-c/)
 * [**C**: _The very basics of a terminal emulator_](https://www.uninformativ.de/blog/postings/2018-02-24/0/POSTING-en.html)
+* [**C**: _Write a System Call_](https://brennan.io/2016/11/14/kernel-dev-ep3/)
 * [**C++**: _Build your own VR headset for $100_](https://github.com/relativty/Relativ)
 * [**C++**: _How X Window Managers work and how to write one_](https://seasonofcode.com/posts/how-x-window-managers-work-and-how-to-write-one-part-i.html)
 * [**C++**: _Writing a Linux Debugger_](https://blog.tartanllama.xyz/writing-a-linux-debugger-setup/)