just

A handy command runner for project-specific commands

Development Productivity linuxmacoswindows Rust CC0-1.0

Description

just is a command runner inspired by make but focused solely on running commands. It uses a simple syntax in a 'justfile', supports parameters, dependencies, and works cross-platform without the quirks of Makefiles.

Install

homebrewbrew install just

cargocargo install just

pacmansudo pacman -S just

AI Summary

A command runner for project-specific tasks. Uses a simple 'justfile' syntax without Make's implicit rules, supporting parameters, dependencies, and cross-platform execution.

Capabilities

+ Simple recipe syntax without Makefile quirks
+ Parameters, default values, and environment variable loading
+ Recipe dependencies and ordering
+ Cross-platform with consistent behavior

Use When

→ Defining project-specific commands (build, test, deploy)
→ Want a simpler alternative to Makefiles for task running
→ Need parameterized commands that team members can discover

Avoid When

x Need actual build system features with file-dependency tracking (use make)

Usage Patterns

Run a recipe

just build

Runs the 'build' recipe from the justfile

List available recipes

just --list

Shows all recipes defined in the justfile with descriptions

View AGENTS.md for just