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Try it out!

Go to https://tbfleming.github.io/em-shell/

Current status

  • Runs on Chrome and Firefox
  • Some built-in commands work
  • Some vfork-exec commands work
  • Gets confused when the terminal page has more than 1 tab or window opened on it

How it works

  • busybox compiled by emscripten
    • Doesn't use Emterpreter or Asyncify!
  • busybox processes run in web workers
  • The web workers communicate with the UI through a service worker
  • The web workers use synchronous (blocking) XMLHttpRequest to wait for terminal input

Build instructions

Prerequisites

  • Linux (tested with Ubuntu 15.04 Server)
  • Node (tested with 4.2.1)
  • Emscripten (tested with 1.35.2)
    • Create a symlink: emgcc -> emcc

Procedure

git clone https://github.com/tbfleming/em-shell.git
git clone https://github.com/tbfleming/em-busybox.git
cd em-shell
either:
    js/build-busybox
    js/build-busybox-dbg