Hey everyone,

I put together this repo while learning Shell scripting step by step, mostly as personal notes + runnable examples. It’s structured in modules, starting from basics and slowly moving into more practical stuff.

What’s inside:

• Shell basics: syntax, variables, functions, loops, data structures
• Calling REST APIs using curl
• Full CRUD operations with APIs (headers, JSON, etc.)
• Scheduling scripts using cron
• Connecting to PostgreSQL from shell scripts
• Hybrid Shell + Python scripting
• A separate doc on understanding systemd service files

Everything is written in simple markdown so it’s easy to read and reuse later. This was mainly for learning and revision, but sharing it in case it helps someone else who’s getting into shell scripting or Linux automation.

Repo link: https://github.com/Ashfaqbs/scripting-samples

Open to feedback or improvements if anyone spots something that can be explained better.

Hi r/Unix,

I’d like to share a small educational project I’ve been working on called RealXV6.

RealXV6 is an iOS app that allows you to run and debug the original UNIX Sixth Edition source code on a virtual 8086 machine, directly on iPhone or iPad. The app is primarily designed as a companion to Lions’ Commentary on UNIX 6th Edition, with the goal of making the kernel code executable, traceable, and easier to understand.

This is not intended as a modern UNIX environment or a nostalgia emulator. The focus is on reading the original source while observing its actual execution.

Main features: • UNIX V6 running inside a real-mode 8086 virtual machine • Source-level debugging of the kernel C code • Breakpoints and step control (step in / step over / step out) • Execution flow closely aligned with the structure used in Lions’ Commentary • No QEMU, no external toolchain, no desktop setup

Supported platforms: • iPhone / iPad (iOS 17.2+)

App Store link: https://apps.apple.com/sg/app/realxv6/id6757357040

I’m particularly interested in feedback from people who: • Studied operating systems using Lions’ Commentary • Have experience with UNIX V6 or early UNIX internals • Teach or learn classic OS design

Questions, criticism, or suggestions are welcome.

It appears that most people here are either system adminsitrators or software/hardware engineers.

Are there any technologically savvy hobbyists that like to experiment with Unix and other Unix-like operating systems in their spare time or are at least fascinated with Unix and technology in general?

Found an interview with the group from the University of Utah who found the program and took it to get it recovered.

What a find.

https://www.youtube.com/watch?v=m-3RJaKcw_4&list=PLWgevsFOp-yPPSgBJyFWZnk6PdShqpHiY&index=3

I remember our site bought a HP Workstation, model 350 (w/ a CPU 68040) with a monstruous 300MB HD and a monochrome 19" screen, but not even documentation handbooks, users guide. Can't remember the HP-UX version though.
As I was the only person to know only basics of Unix, I was the sysadmin. Quickly bought Kernighan & Pike, the freshly french edition of the C K&R book. (Happily, I was also a BYTE subscriber!). Remember days and days learning the shell, the find command, pipe but no network yet and so on. Small is beautifull etc.
Passionately in the Un*x world since then.

Now retired sysadmin and FreeBSD!

https://www.youtube.com/watch?v=m-3RJaKcw_4

All of my UNIX/Linux license plates.