ShellPlay

Browser Linux terminal - 100+ commands, in-memory filesystem.

Next.js 16ReactTypeScriptTailwind CSS

Overview

A fully functional browser-based Linux terminal simulator with 100+ commands, a full shell script interpreter, and a virtual filesystem. All state lives in memory only - when you close the browser, everything is wiped clean.

✓100+ commands: navigation, files, text processing, system info, processes, networking, users
✓Command catalog modal - 40+ commands across 9 categories, click to autofill
✓Bash interpreter: variables, loops, conditionals, functions, substitution, pipes, redirection
✓In-memory VFS with permissions, ownership, timestamps - zero disk I/O
✓Green (#00ff88) / amber (#ffb700) themes on #0d0d0d; history, tab-complete, help overlay

Next.js 16ReactTypeScriptTailwind CSS

Live app — square preview

ShellPlay — live Vercel — https://shellplay.vercel.appopen ↗

user@linux-sim: ~

user@linux-sim:~$

Miniature with 20 commands. The full simulator: 100+ commands, bash interpreter with loops/conditionals/pipes, Commands catalog modal, JetBrains Mono.

Evidence · from the repo

How it works

TypeInput with history (↑↓), tab autocomplete and live descriptions - prompt user@linux-sim:/path$
ExecuteCommandExecutor (50+ implementations) parses args, operates on the VFS, returns formatted output.
ScriptShellInterpreter runs bash scripts with variables, loops and conditionals.
IsolateEverything in memory - close the tab and the whole machine evaporates.

SEEDED FILESYSTEM

Path	Contents
/home/user/	documents/, downloads/, README.txt
/etc/	passwd (full user list), hostname
/var/log/	syslog (kernel logs)
/proc/	cpuinfo (Core i5), meminfo (8 GB)
/tmp, /bin, /usr/bin	scratch space, bash, sh, utilities

DOCUMENTED LIMITS

Area	Status
Network commands	Simulated - no real network access
Processes	Simulated ps/top data
Scripting	Simplified core features
Persistence	None - memory only

RUN IT

bash

pnpm install   # or npm install
pnpm dev       # → http://localhost:3000
pnpm build && pnpm start

Build log · reproduce it

REPRODUCE

—Prerequisites: Node.js 18+, pnpm/npm/yarn

—pnpm install

—pnpm dev → http://localhost:3000

—Pure TypeScript engine - no external dependencies for FS/commands