A modern shell written in Go with a scripting language that actually makes sense.

Dush replaces the cryptic ${} syntax of bash with a clean @ sigil system. Variables are explicit, methods are chainable, and commands just work.

@name = "world"
echo "hello @name"             # hello world
echo @name.upper()             # WORLD

const @PI = 3.14               # immutable
pub @KEY = "abc"               # exported to child processes

match (@status) {
    case 0 { echo "ok" }
    case _ { echo "fail" }
}

proc greet(@who) {
    echo "hey @who!"
}
greet("dush")

sleep 30 &                     # background job
jobs                           # list running jobs

• @ variable system -- unambiguous access everywhere (code, commands, strings)
• Data types -- integers, floats, strings, booleans, arrays
• String interpolation -- "hello @name" just works, 'raw @string' doesn't
• Method syntax -- @name.upper(), @text.split(","), @n.abs()
• match-case -- pattern matching with case _ wildcard
• const / pub -- immutability and export as language keywords
• Shell variables -- @LAST_STATUS, @OS_NAME, @SHELL_PID (read-only)
• Procedures -- first-class, closures, recursion
• Loops -- conditional (loop (@i < 10)) and iterator (loop (@x : @items))
• Command chaining -- &&, ||, pipes |, redirects >, >>
• Background jobs -- command &, jobs, fg, wait, killjob, disown
• Output capture -- let @out = save(echo "hi")
• Scoped env -- with (@NODE_ENV = "prod") { ... }
• String/array/number methods -- trim, replace, split, join, contains, slice, abs, etc.
• Customizable prompt -- oh-my-zsh style {tokens} with ANSI colors, git branch, time
• Modern ls -- icons, colors, grid/table layout, human-readable sizes, sorting
• File operations -- mkdir, mkfile, rm, touch as builtins
• Directory stack -- pushdir, popdir, dirs
• Signal trapping -- trap 'echo bye' EXIT
• Interactive shell -- history, tab completion (with cycling), reverse history search (Ctrl+R), ~/.dush/ config
• Cross-platform -- Windows, Linux, macOS

• Go 1.21+

# With gobake (recommended)
gobake build

# Or manually
go build -o build/dush ./cmd/dush

Binaries output to build/.

./build/dush

All built-in commands support -h for inline help.

dush/
  cmd/
    dush/          # main shell binary
    shout/         # echo-like utility
    ports/         # cross-platform port scanner
    fmt/           # printf-style formatting
    kill/          # send signals to processes
  internal/
    parser/        # lexer, tokens, AST, Pratt parser
    evaluator/     # tree-walking evaluator, environment, methods, jobs
    prompt/        # customizable prompt renderer with ANSI colors
    builtins/      # built-in shell commands
    repl/          # interactive shell with history + tab completion
    app/           # global app state
    config/        # defaults and runtime config
    utils/         # utilities (history, colors, display)
  docs/            # documentation
  examples/
    showcase.dush  # comprehensive language demo

MIT