just-cli 0.2.0

Your all-in-one CLI Toolkit

🛠️ JUST CLI

The simple stuff should be simple.

Sick of Googling "how to install X on XXX" for the 47th time, only to end up copying and pasting similar commands from various official docs?

Tired of copy-pasting giant commands and tapping arrow keys forever just to change one little thing?

Just want an all-in-one toolkit for everyday simple tasks, instead of endlessly searching and testing Deep Research results one by one?

Just is built to end the hassle. It focuses purely on making the simple, everyday developer tasks actually simple.

Installation

pip install just-cli

😋 The Good Stuff

The Toolkit 🧰

A collection of essential tools that work exactly how you expect them to.

📥 Easy Download

Just download files like wget or curl, but with smart naming, auto-resume, and a beautiful progress bar by default.

# Auto-resume is on by default. The filename is automatically extracted from the URL.
just download https://example.com/big-file.zip

# Use -H for custom headers and -o to specify a custom output filename.
just download https://api.example.com/data -H "Authorization: Bearer token" -o data.json

📦 Universal Extract

Just extract the archive. It intelligently detects the compression format (via magic bytes) and handles everything.

• Supported: ZIP, TAR, GZ, BZ2, XZ, ZSTD, 7Z.
• Note: RAR is not supported.

# Extracts to a folder named after the archive by default
just extract archive.tar.gz

# Specify a custom output directory
just extract data.7z -o ./output_dir

📝 Text Editor

Just edit files with a simple TUI editor.

just edit README.md

📖 Smart Viewer

Just view files with intelligent rendering. Currently supports Markdown with syntax highlighting and TOC. Based on the excellent Textual Markdown example.

just view README.md

🌐 Cloudflare Tunnel

Just expose your local server to the internet.

# Powered by Cloudflare Tunnel (cloudflared)
just tunnel http://localhost:8000

🐧 Common Linux File Operations

Just some common file operations implemented in Python, for those tired of remembering command differences between Linux and Windows.

just cat
just ls 
just cp
just mv
just rm
just mkdir

The Extension System 🧩

Create a CLI tool with Just Extension in just 2 steps

The core idea is simple: String Replacement. You take a long, complex command, mark the parts you want to change, and just generates a CLI for it.

Here is an example:

1. Register the complex command: Tell just what command you want to alias.

   just ext add docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' f523e75ca4ef
   

2. Design your command: Design a command structure that is easy for you to remember by marking dynamic parts using the syntax [<name>:<type>=<default>#<help>].

   # Replace the static container ID with a dynamic argument
   Enter extension commands: just docker ip f523e75ca4ef[container_id:str#The Container ID]
   

That's it! Now you can use your new command:

just docker ip <container_id>

✨ How it works

When you run the command above, just compiles a native Python script using typer.

1. Parsing: The syntax f523e75ca4ef[container_id:str#The Container ID] tells just to:

   • Identify f523e75ca4ef as the target string to replace.
   • Create a variable container_id of type str.
   • Use "The Container ID" as the help message.

2. Code Generation: It generates a Python function with a type-safe signature:

   def main(container_id: Annotated[str, typer.Argument(help="The Container ID")]):
       # The original command template
       command = "docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' f523e75ca4ef"
       
       # String Replacement Logic
       command = command.replace('f523e75ca4ef', str(container_id))
       
       # Execution
       subprocess.run(shlex.split(command))
   

3. Result: You get a fully functional CLI with auto-completion, type validation, and help messages—all powered by the simple act of string replacement.

The Installer 💿

Automate the "Official Docs" with minimal code.

just allows you to run any command from the official docs using just.execute_commands. It simply automates your manual steps.

To help you make decisions, just provides system probing tools:

• just.system.platform: linux, windows, darwin
• just.system.arch: x86_64, aarch64
• just.system.pms: Detects winget, brew, apt, etc.

We also provide two specialized helpers for common scenarios:

• just.BinaryInstaller: Best for single-file binaries (handles download, chmod, path).
• just.SimpleReleaseInstaller: Best for archives (handles download, extraction, linking).

Example: Installing Cloudflared

Here is a complete example that mimics the official installation logic:

@just.installer(check="cloudflared --version")
def install_cloudflare():
    """Install Cloudflare Tunnel client."""
    
    # Use standard package managers if available
    if just.system.pms.winget.is_available():
        just.execute_commands("winget install --id Cloudflare.cloudflared")
        
    elif just.system.pms.brew.is_available():
        just.execute_commands("brew install cloudflared")
    
    # Use BinaryInstaller
    elif just.system.platform == 'linux':
        # This helper automates: curl -> chmod +x -> symlink to bin
        just.BinaryInstaller(
            url='https://github.com/cloudflare/cloudflared/releases/.../cloudflared-linux-amd64',
            alias='cloudflared'
        ).run()
    
    else:
        raise NotImplementedError

🤝 Contributing

Found a bug? Want to add a new installer? Fork it, fix it, ship it. We love PRs. Just keep it cool, keep it simple, and don't break the "just works" vibe.

📄 License

MIT. Go wild.