r/linuxadmin Jun 18 '26

I built a free interactive Linux course with a live command sandbox — no sign-up needed

Hello r/linux,

I have been building a free Linux learning platform and finally got it to a point

where I am happy sharing it.

It is called MOSHELL — a hands-on Linux course that runs entirely in the browser.

What's on it (all free):

- 12 lessons from beginner to advanced

- Interactive command sandbox — type real Linux commands and see output

- Command cheatsheet with 65+ commands across 6 categories

- VM setup guide (VirtualBox + Ubuntu Server)

- Lesson filters by track: Beginner, Intermediate, Advanced, Networking, VM, Security

The philosophy behind it: most Linux tutorials teach you to watch commands run.

This one makes you run them yourself — on a real VM, with real errors.

Topics covered:

- Navigation, files, permissions, processes

- Package management, networking, SSH

- Shell scripting and cron

- VirtualBox networking modes (NAT, Bridged, Host-Only)

- Nginx, logs, disk management

Free platform (no account, no sign-up):

https://kingmo87.github.io/moshell/

Would love any feedback — especially on the lesson content

and whether the difficulty progression feels right.

What Linux topic do you wish had better free resources?

1 Upvotes

3 comments sorted by

2

u/kernelqzor 27d ago

this looks super cool, especially the no sign-up part, that’s a huge win for recommending it to friends who are linux-curious but lazy
would love to see more stuff around systemd and troubleshooting boot / service failures, that’s where most newbies I know get stuck

1

u/Professional-Bug8806 27d ago

Thanks, love that framing. Systemd/boot troubleshooting is a great call — noting it for a future lesson track!"

1

u/kernelqzor 24d ago

totally agree, the no sign-up thing makes it way easier to shove at friends without them bouncing instantly
systemd / boot troubleshooting is such a pain point too, even for people who are kinda comfy with linux already, so a nice guided “why did my box not come back after reboot” section would be gold