These are some of the great textbooks to teach #UNIX #OS to #CS undies:

• V6, Lions
• SVR2, Bach
• MINIX3, Tanenbaum
• Xinu, Comer
• xv6 (V6 clone), Cox

But there is a space to create an even smaller, sleeker, simpler, study OS:

• Barebones 32-bit OS that runs on a cheap Cortex-M3 board (STM32 Blue Pill) or RISC-V board (ESP32-C6)
• Keep the code under 10k lines of C (or Ada, Rust, Zig, ...)
• Support only UNIX-like soft-realtime scheduling (no RTOS)
• Support user and kernel modes
• Multiplex the single-core CPU to multiple processes
• Map a handful of interrupts to signals
• Provide a subset of the POSIX API, just enough to run a simple I/O executable (button pushy/LED blinky) in multiple processes, simultaneously
• Single-user (root only) operation
• No security, accounting, etc.
• Shell on a terminal emulator, via a USB-TTL adapter

The goal is to create a smallest, simplest, bona fide OS for the cheapest ($0.99) hardware, so as to steer kids away from Scratch, MicroPython, Processing, and similar other harmful influences, during the early phase of their system #programming education.

To make explicit the implicit premise above, the marvellous Arduino teaches the kids to do the easy thing repeatedly, but a comparative-joke C64 forces the kids to do the right thing persistently.

It is infeasible to teach, in detail, the essentials of an OS (scheduling algorithms, process management, memory management, memory protection, authentication, authorisation, encryption, disc I/O, network I/O, graphics I/O, ...) in just one semester.

In contrast, the kids could master the above mentioned focused curriculum in just one semester, thereby gaining much confidence in system #programming.

I tried #FREEDOS one time.. and all go bad installing it.

MSDOS is better for me..

But I will try one more time..

#MSDOS #DOSGaming #CPM
#retrogaming #retrocomputing #oldcomputers #vintage #retro #os #system

wait wtf? Things escalated from protecting to kids to going after burner #phones with age verification. The last reliable form of #privacy internet users had was the isp. There really is no reason if we have websites age verification, #appstores age verification, and #os #verification .

They don't want anyone to be #anonymous #fcc

#ageverification #idverification

sources:

https://www.404media.co/fcc-wants-to-kill-burner-phones-by-forcing-telecoms-to-get-all-customers-ids/

alternative source: https://www.androidheadlines.com/2026/06/fcc-proposal-anonymous-burner-phones-identity-rules.html

California’s AB 1856 would exempt open-source operating systems from AB 1043 age-bracketing rules after amendments approved by the Assembly. 🐧
The bill still expands age-gating to browsers and websites, raising privacy, anonymity, security, and speech concerns cited by EFF. 🔒

@eff

🔗 https://www.eff.org/deeplinks/2026/05/one-step-forward-two-steps-back-cas-ab-1856-exempts-open-source-expands-age-gating

#TechNews #Bill #AB1856 #AB1043 #OpenSource #AgeGating #AgeVerification #EFF #Privacy #Security #Anonymity #FreeSpeech #Transparency #DigitalRights #Internet #FOSS #California #OS

How is proton a privacy company and doesn't have proper Linux support. #proton #linux #foss #os #privacy #security

🌐 Many companies now block older browser versions from accessing their websites!

This follows many #browser makers ending updates 4 older operating systems, leaving legacy devices unable to use #web services without an #OS upgrade.

This kinda reminds me of the Java #website block by browsers a few years ago, just in reverse. (Revenge? ;)

Old #Android versions are also increasingly blocked from accessing the #Google #appstore.

Truly about security or perhaps Planned Obsolescence?

#Tech #News

Alt...

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SkiftOS : https://skiftos.org/

It's not a *NIX!

"skiftOS isn’t POSIX. It’s a fresh API and userland inspired by Plan 9, Haiku, and Fuchsia. Familiar ideas, different contracts."

Problem: the GPL is poison. It has polluted Linux and the Linux userland software so that only large corporations can afford to monetize it. BSD License or MIT License would be much better allowing small players to produce unique work without then being forced to share their source code with the AI hegemony racket.

#SkiftOS #Tech #Linux #OS #Plan9 #Haiku #Fuchsia #Computing #SoftwareFreedom #AIHegemony #GPL #License #BSD #MIT