You might find these helpful:

- "Practical Filesystem Design": http://www.nobius.org/dbg/practical-file-system-design.pdf

- "Robert Love: Linux Kernel Development (chapters 13-14)" https://www.amazon.com/Linux-Kernel-Development-Robert-Love/...

- "The Linux Programming Interface (File I/O chapters)": https://www.amazon.com/Linux-Programming-Interface-System-Ha...

It amazes me sometimes how much of a dying breed systems engineers are. When I was coming up as a SWE I worked for a series of systems engineers, so I learned software from a systems engineering perspective and it's been invaluable as distributed systems have gotten bigger and more OS-like.

If you're wanting to dive a little deeper than this guide touches check out:

- https://man7.org/tlpi/ - Really good for understanding how to build applications within a Linux ecosystem.

- https://www.amazon.com/Linux-Kernel-Development-Robert-Love/... - Really good for understanding why Linux is the way it is. The Kernel this book was written on is awful old, but the principles shine through.

> Let's not even talk about pre-fork parallelism which is probably the simplest way to use multiple cores when dealing with independent tasks but hardly anybody seems to use these days. I wonder if most devs even realize that it's an option.

Speaking from experience: they don't. I recently picked up a Linux kernel development book [1] and after four or five chapters I was able to eliminate several bottlenecks and eliminate latency edge cases in personal projects with a greater understanding of the scheduler algorithm and process priority/affinity/yields.

I think the problem is that the vast majority of developers work on top of cross-platform runtimes that hide any detail that can't be easily implemented for all operating systems. It's been more than a decade since I've used Unix sockets directly in any language and I don't how to set SO_REUSEPORT in Rust. I'd probably have to implement it using `TCPListener::as_raw_fd()` and `unsafe libc::setsockopt`? It's just easier stay sane within the bumpers.

[1] https://www.amazon.com/Linux-Kernel-Development-Robert-Love/...

I read this book few years ago:

Linux Kernel Development by Robert Love. It was not too hard read for newbie like me. I was just dabbling in understanding few things about OS in general.

https://www.amazon.com/Linux-Kernel-Development-Robert-Love/... https://rlove.org/

If you want to become a professional and not just a dabbler I would recommend reading some of the following books I have in my bookshelf:

[0] RHCSA & RHCE Training and Exam Preparation Guide by Asghar Ghori. This book will help insure you know your stuff as your system engineer/administrator wise.

[1] A Practical Guide to Linux Commands, Editor and Shell Programming Third Edition. This book will cover the majority of what you would need and want to know when connecting to a remote linux system over ssh.

If you want to get under the hood and become an expert, the following books should help get you started:

[2] Advanced Programming in the UNIX Environment

[3] The Linux Programming Interface: A Linux and UNIX System Programming Handbook

[4] Linux Kernel Development 3rd Edition

To get a nice general overview and get up and going quickly:

[5] How Linux works: What every superuser should know

[6] The Linux Command Line

[7] Python Crash Course

[8] Automate the boring stuff with Python. This is a great book to help you think about how to automate most of the repetitive things you will end up doing on a regular basis.

[0] https://www.amazon.com/RHCSA-RHCE-Red-Enterprise-Linux/dp/14...

[1] https://www.amazon.com/Practical-Guide-Commands-Editors-Prog...

[2] https://www.amazon.com/Advanced-Programming-UNIX-Environment...

[3] https://www.amazon.com/Linux-Programming-Interface-System-Ha...

[4] https://www.amazon.com/Linux-Kernel-Development-Robert-Love/...

[5] https://www.amazon.com/How-Linux-Works-Superuser-Should/dp/1...

[6] https://www.amazon.com/Linux-Command-Line-Complete-Introduct...

[7] https://www.amazon.com/Python-Crash-Course-Hands-Project-Bas...

[8] https://www.amazon.com/Automate-Boring-Stuff-Python-Programm...

Hit the books? That's what I do, I'm reading this one for fun now: https://www.amazon.com/Linux-Kernel-Development-Robert-Love/...

It's awesome. I have a library stacked full of software and CS books. Maybe try to get your bachelors at night? I got my master's at night while working.

This is a craft. If you want to be an expert, train like an expert. Realize 3 months of a bootcamp isn't going to cut it, not at least until you've been working for 4, 6, 8 years.

If you can't tell me what inter process communication is, what it's used for, pipes, signals, etc. then I think you have some pretty big gaps in knowledge that preclude you from being an expert at this point.

I'd also add Love's Linux Kernel Development[2], published in 2010. Great resource overall for someone wanting to go developing the internals of the kernel.

[2] http://www.amazon.com/dp/0672329468

Linux Kernel Development by Robert Love is an exceptional book..

http://www.amazon.com/Linux-Kernel-Development-3rd-Edition/d...

The large pages feature (huge pages) still works the same way but the transparent huge pages patch has been integrated recently: http://www.slideshare.net/raghusiddarth/transparent-hugepage...

I personally wouldn't mess with the VM settings the way the author suggests. I don't remember doing that eight years ago anyway even with less RAM on a desktop. On a server you want the working set to fit in RAM anyway and the page cache is already pretty smart.

The best resource is a general kernel book: http://www.amazon.com/Linux-Kernel-Development-3rd-Edition/d...

in terms of the interaction between memory, the cpu, and virtual memory What every Programmer should know about memory should be required reading: http://www.akkadia.org/drepper/cpumemory.pdf

OK, if you don't have any real experience in low-level embedded coding (relevant to device drivers), RTOS or OS design in general, file systems, data structures, algorithms, interfaces, etc. And, if you have "hobby level" experience with Assembler, C and C++. And, if your intent is to write a desktop OS, from the ground up, without making use of existing technologies, drivers, file systems, memory management, POSIX, etc. Here's a list of books that could be considered required reading before you can really start to write specifications and code. Pick twenty of these and that might be a good start.

In no particular order:

1- http://www.amazon.com/C-Programming-Language-2nd-Edition/dp/...

2- http://www.amazon.com/The-Answer-Book-Solutions-Programming/...

3- http://www.amazon.com/The-Standard-Library-P-J-Plauger/dp/01...

4- http://www.amazon.com/C-Traps-Pitfalls-Andrew-Koenig/dp/0201...

5- http://www.amazon.com/Expert-Programming-Peter-van-Linden/dp...

6- http://www.amazon.com/Data-Structures-In-Noel-Kalicharan/dp/...

7- http://www.amazon.com/Data-Structures-Using-Aaron-Tenenbaum/...

8- http://www.amazon.com/Mastering-Algorithms-C-Kyle-Loudon/dp/...

9- http://www.amazon.com/Code-Complete-Practical-Handbook-Const...

10- http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

11- http://www.amazon.com/The-Mythical-Man-Month-Engineering-Ann...

12- http://www.amazon.com/The-Programming-Language-4th-Edition/d...

13- http://www.amazon.com/The-Standard-Library-Tutorial-Referenc...

14- http://www.amazon.com/API-Design-C-Martin-Reddy/dp/012385003...

15- http://www.amazon.com/The-Linux-Programming-Interface-Handbo...

16- http://www.amazon.com/Computer-Systems-Programmers-Perspecti...

17- http://www.amazon.com/System-Programming-Unix-Adam-Hoover/dp...

18- http://www.amazon.com/Memory-Programming-Concept-Frantisek-F...

19- http://www.amazon.com/Memory-Management-Implementations-Prog...

20- http://www.amazon.com/UNIX-Filesystems-Evolution-Design-Impl...

21- http://www.amazon.com/PCI-System-Architecture-4th-Edition/dp...

22- http://www.amazon.com/Universal-Serial-System-Architecture-E...

23- http://www.amazon.com/Introduction-PCI-Express-Hardware-Deve...

24- http://www.amazon.com/Serial-Storage-Architecture-Applicatio...

25- http://www.amazon.com/SATA-Storage-Technology-Serial-ATA/dp/...

26- http://www.amazon.com/Beyond-BIOS-Developing-Extensible-Inte...

27- http://www.amazon.com/Professional-Assembly-Language-Program...

28- http://www.amazon.com/Linux-Kernel-Development-3rd-Edition/d...

29- http://www.amazon.com/Version-Control-Git-collaborative-deve...

30- http://www.amazon.com/Embedded-Software-Primer-David-Simon/d...

31- http://www.amazon.com/Programming-Embedded-Systems-C/dp/1565...

32- http://www.amazon.com/Making-Embedded-Systems-Patterns-Softw...

33- http://www.amazon.com/Operating-System-Concepts-Abraham-Silb...

34- http://www.amazon.com/Performance-Preemptive-Multitasking-Mi...

35- http://www.amazon.com/Design-Operating-System-Prentice-Hall-...

36- http://www.amazon.com/Unix-Network-Programming-Sockets-Netwo...

37- http://www.amazon.com/TCP-Illustrated-Volume-Addison-Wesley-...

38- http://www.amazon.com/TCP-IP-Illustrated-Vol-Implementation/...

39- http://www.amazon.com/TCP-Illustrated-Vol-Transactions-Proto...

40- http://www.amazon.com/User-Interface-Design-Programmers-Spol...

41- http://www.amazon.com/Designing-Interfaces-Jenifer-Tidwell/d...

42- http://www.amazon.com/Designing-Interfaces-Jenifer-Tidwell/d...

43- http://www.amazon.com/Programming-POSIX-Threads-David-Butenh...

44- http://www.intel.com/p/en_US/embedded/hwsw/software/hd-gma#d...

45- http://www.intel.com/content/www/us/en/processors/architectu...

46- http://www.intel.com/p/en_US/embedded/hwsw/hardware/core-b75...

47- http://www.hdmi.org/index.aspx

48- http://en.wikipedia.org/wiki/Digital_Visual_Interface

49- http://www.amazon.com/Essential-Device-Drivers-Sreekrishnan-...

50- http://www.amazon.com/Making-Embedded-Systems-Patterns-Softw...

51- http://www.amazon.com/Python-Programming-Introduction-Comput...

52- http://www.amazon.com/Practical-System-Design-Dominic-Giampa...

53- http://www.amazon.com/File-Systems-Structures-Thomas-Harbron...

54- ...well, I'll stop here.

Of course, the equivalent knowledge can be obtained by trial-and-error, which would take longer and might result in costly errors and imperfect design. The greater danger here is that a sole developer, without the feedback and interaction of even a small group of capable and experienced programmers could simply burn a lot of time repeating the mistakes made by those who have already trenched that territory.

If the goal is to write a small RTOS on a small but nicely-featured microcontroller, then the C books and the uC/OS book might be a good shove in the right direction. Things start getting complicated if you need to write such things as a full USB stack, PCIe subsystem, graphics drivers, etc.

The most thorough treatment is Bovet & Cesati (944 pages): http://www.amazon.com/Understanding-Linux-Kernel-Third-Editi...

A good "gentle introduction" book is the Love book (440 pages): http://www.amazon.com/Linux-Kernel-Development-Robert-Love/d...

As a start, read and understand http://www.amazon.com/Understanding-Linux-Kernel-Third-Editi... (that's a very technical and in-depth book) and http://www.amazon.com/Linux-Kernel-Development-3rd-Edition/d... (that's a more gentle overview book) then dive in with http://www.amazon.com/UNIX-Filesystems-Evolution-Design-Impl... and write a very simple file system.

Learn C as necessary.

The FreeBSD kernel book is worth a look too: http://www.amazon.com/Design-Implementation-FreeBSD-Operatin...

I have been keeping a list of books I used to augment my CS Masters Degree courses on various topics, here are the relevant ones I have found useful for the topics you have listed:

--Computer Organization--:

Computer Systems: A Programmer's Perspective http://www.amazon.com/Computer-Systems-Programmers-Randal-Br...

I liked this much better than Computer Organization and Design by Patterson and Hennessy which everyone has encountered at some point. The developer-centric view was very cool.

--Computer Security--:

Kernel Exploitation: Attacking the Core http://www.amazon.com/Guide-Kernel-Exploitation-Attacking-Co...

Most 'hacking' books are goofy. This one is very good and doubles nicely as a hackers operating systems text.

Web Application Hackers Handbook http://www.amazon.com/Web-Application-Hackers-Handbook-Disco...

Very nice overview for web concerns.

--Operating Systems-:

Operating System Design and Implementation http://www.amazon.com/Operating-Systems-Design-Implementatio...

I don't agree with Tanenbaum's views on micro vs. monolithic kernels but this book is a great mix of theory and implementation.

Linux Kernel Devleopment http://www.amazon.com/Linux-Kernel-Development-Robert-Love/d...

I used this to get a feel for the monolithic implementations of topics covered by Tanenbaum.

--Networking--:

TCP/IP Illustrated Series. More than you would ever want to know.