The TTY Demystified
http://www.linusakesson.net/programming/tty/
Beej's Guide to Network Programming
http://www.beej.us/guide/bgnet/output/html/singlepage/bgnet.html
Other Beej guides: http://www.beej.us/guide/
Network Protocols for Anyone who knows a Programming Language
https://www.destroyallsoftware.com/compendium/network-protocols?share_key=97d3ba4c24d21147
How does x86 paging work?
http://stackoverflow.com/questions/18431261/how-does-x86-paging-work/18431262#18431262
Floating Point Visually Explained
http://fabiensanglard.net/floating_point_visually_explained/
What Every Systems Programmer Should Know About Lockless Concurrency
https://assets.bitbashing.io/papers/lockless.pdf
PoC||GTFO 0x16
https://www.alchemistowl.org/pocorgtfo/pocorgtfo16.pdf
How does GDB call functions?
https://jvns.ca/blog/2018/01/04/how-does-gdb-call-functions/
UNIX Syscalls
https://john-millikin.com/unix-syscalls
A Small Trail through the Linux Kernel
https://www.win.tue.nl/~aeb/linux/vfs/trail.html
So you want to build an embedded Linux system?
https://jaycarlson.net/embedded-linux/
Write Yourself a Git
Roll your own toy UNIX-clone OS
http://jamesmolloy.co.uk/tutorial_html/
Let's Write a Kernel with Keyboard and Screen Support
https://arjunsreedharan.org/post/99370248137/kernel-201-lets-write-a-kernel-with-keyboard
x86 Assembly Language Programming with Ubuntu
http://www.egr.unlv.edu/~ed/x86.html
Tracing a packet journey using Linux tracepoints, perf and eBPF
https://blog.yadutaf.fr/2017/07/28/tracing-a-packet-journey-using-linux-tracepoints-perf-ebpf/
Write a System Call
https://brennan.io/2016/11/14/kernel-dev-ep3/
Writing your own Toy Compiler Using Flex, Bison and LLVM
http://gnuu.org/2009/09/18/writing-your-own-toy-compiler/
How to Write Portable C Without Complicating Your Build
http://nullprogram.com/blog/2017/03/30/
Raw Linux Threads via System Calls
http://nullprogram.com/blog/2015/05/15/
Re-implement the core parts of Git in Python
http://benhoyt.com/writings/pygit/ (500 LoC, 15 minute read)
Write a Shell in C
https://brennan.io/2015/01/16/write-a-shell-in-c
Writing a C Compiler
https://norasandler.com/2017/11/29/Write-a-Compiler.html
A book list for operating system kernel developers and device driver writers
http://jdebp.eu./FGA/operating-system-books.html
The Coming War on General-Purpose Computing
https://boingboing.net/2012/01/10/lockdown.html
Stack Overflow Developer Survey Results
http://stackoverflow.com/insights/survey/2017/
http://stackoverflow.com/insights/survey/2018/