Shell Gym is a background daemon with a web UI that turns any Linux box into an interactive command-line trainer by observing real shell actions via procfs and the kernel proc connector, without modifying the user's shell.

Stars

150

7-day growth

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Forks

19

Open issues

1

License

NOASSERTION

Last updated

2026-07-25

Why it is worth attention

It provides a unique zero-instrumentation approach that forces users to type real commands in a real terminal, automatically detecting completion when system state changes, thus building genuine muscle memory.

Who it is for

  • Linux beginners seeking hands-on practice
  • Developers transitioning to Linux
  • Sysadmins wanting to sharpen command-line reflexes
  • Educators creating interactive Linux curricula

Use cases

  • Practicing file system navigation and directory creation
  • Learning process management (kill, free ports, signals)
  • Reinforcing stdio redirection and pipe usage
  • Mastering command-line workflows with randomized, repeatable exercises

Strengths

  • No shell modification: skills transfer directly to any terminal
  • Automatic completion detection via kernel and procfs
  • Progress persists across sessions and daemon restarts
  • Parametric and customizable learning paths for personalized drills

Considerations

  • Requires root privileges and a disposable Linux host
  • Learning path state depends on system state preservation; external changes can break resumption
  • Noncommercial license restricts commercial use without permission

README quick start

Quick start

Description

Shell Gym - an Interactive Linux Command-Line Trainer

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