Code Execution

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Run code snippets directly in Discord using Godbolt and Wandbox compilers.

Commands

Run

Execute code in various programming languages.

Usage:

Aliases: compile, exec

Permission: Rank 0 (Everyone)

Note: Prefix-only command

Supported Languages:

Via Godbolt (compiler output):

  • C, C++, C#, F#
  • Haskell
  • Julia
  • Python
  • Go
  • Kotlin
  • Swift
  • Zig
  • Java
  • Rust

Via Wandbox (execution output):

  • Bash/Shell
  • D
  • Elixir
  • Erlang
  • Groovy
  • JavaScript/Node.js
  • TypeScript
  • Lisp
  • Lua
  • Nim
  • OCaml
  • Pascal
  • Perl
  • PHP
  • Pony
  • R
  • Ruby
  • SQL (SQLite)

Example:

Languages

List all supported programming languages.

Usage:

$languages

Aliases: langs, lang

Permission: Rank 0 (Everyone)

Shows:

  • All supported languages
  • Compiler/runtime versions
  • Backend service (Godbolt/Wandbox)

Compiler Backends

Godbolt

Godbolt is used for compiled languages:

  • Returns compiler output and assembly
  • Useful for seeing optimizations
  • Links to Godbolt explorer

Languages: C, C++, Rust, Go, Haskell, Python, Java, Kotlin, Swift, Zig

Wandbox

Wandbox is used for interpreted/script languages:

  • Returns execution output
  • Supports STDIN
  • Good for scripting languages

Languages: Bash, JavaScript, TypeScript, Ruby, Python, PHP, Perl, Lua, Elixir, etc.

Language Detection

Tux automatically detects:

  • Language from code block
  • Appropriate backend (Godbolt/Wandbox)
  • Compiler version

Limitations

Execution Limits

  • Timeout: 10 seconds maximum
  • Output: Limited to Discord message size
  • Resources: Limited CPU/memory on backend
  • Network: No network access in code

Restricted Operations

  • Cannot access files
  • Cannot make network requests
  • Cannot run indefinitely
  • No persistent state

Safety

  • Code runs in sandboxed environments
  • Cannot affect Discord or the bot
  • Output is sanitized
  • ANSI codes removed for readability

Tips

Language Aliases

Many languages have aliases: py/python, js/javascript, rs/rust, cpp/c++

Check Support

Use $languages to see all supported languages and their versions.

Formatting

Use proper code blocks (triple backticks) for multi-line code.

Quick Tests

Perfect for testing small code snippets or algorithms!

Not an IDE

This is for quick tests and demonstrations, not full development. Use a proper IDE for larger projects!

Troubleshooting

"Unsupported Language"

Cause: Language not supported or typo

Solution:

  • Run $languages to see supported languages
  • Check spelling
  • Use language alias (e.g., py instead of python3)

Compilation Error

Cause: Syntax error in code

Solution:

  • Check your code syntax
  • Verify language is correct
  • Test locally first

Timeout Error

Cause: Code takes too long to execute

Solution:

  • Simplify your code
  • Remove infinite loops
  • Optimize algorithm

Output Too Long

Cause: Code produces too much output

Solution:

  • Limit output lines
  • Summarize results
  • Use shorter test cases

Supported Language Reference

Compiled Languages (Godbolt)

Language Versions Aliases
C GCC 15.1 c
C++ GCC 15.1 cpp, c++
Rust 1.87.0 rs, rust
Go GCC Go 15.1 go
Haskell GHC 9.8.4 hs, haskell
Python 3.13 py, python
Java Java 24 java
Kotlin 2.1.21 kt, kotlin, kot
Swift 6.1 swift
Zig 0.14.1 zig
C# .NET 8.0 cs, csharp
F# .NET 8.0 fs, fsharp
Julia Nightly julia

Interpreted Languages (Wandbox)

Language Versions Aliases
JavaScript Node.js 20.17.0 js, javascript
TypeScript 5.6.2 ts, typescript
Python (via Wandbox) py, python
Ruby 3.4.1 ruby
PHP 8.3.12 php
Bash Latest bash, sh
Lua 5.4.7 lua
Perl 5.40.0 perl
R 4.4.1 r
SQL SQLite 3.46.1 sql
Elixir 1.17.3 elixir
Erlang 27.1 erlang
Nim 2.2.4 nim
OCaml 5.2.0 ocaml
Groovy 4.0.23 groovy
D DMD 2.109.1 d
Pascal FPC 3.2.2 pascal
Pony 0.58.5 pony
Lisp CLISP 2.49 lisp

External Services

Next: Learn about Config Commands for server configuration.

Tools Config